Journal of Ceramics and Concrete Technology. ISSN: 2457-0826 (Online)

Authors: Rohini Pulluri, Kurava Venkatesh

Abstract: 

Structural Analysis is a branch which involves in the determination of behavior of structures in order to predict the responses of different structural components due to effect of loads.  ETABS (Extended Three Dimensional Analysis of Building Systems) is software which is incorporated with all the major analysis engines that is static, dynamic, linear and non-linear, etc. The main purpose of this software is to design multi-storeyed building in a systematic process. The effective design and construction of earthquake resistant structures have great importance all over the world. Our project “Analysis Of Earthquake Resistance Structure By Using ETABS†is an attempt to analyze a residential building using ETABS.A G+17 storey building is considered for this study. Analysis is carried out by static method and design is done as per IS 456:2000 guidelines.

Keywords: Seismic Analysis, ETABS 2016, Displacement, Storey Shear.

 

Authors: Gangadhar. S, Vinay M

Abstract: The process of structural planning and design requires not only imagination and conceptual thinking but also sound knowledge of science of structural engineering besides the knowledge of practical aspects, such as recent design codes, bye laws, backed up by ample experience, intuition and judgment. It is emphasized that any structure to be constructed must satisfy the need efficiently for which it is intended and shall be durable for its desired lifespan. STRUDS software is used to analyze and design the G+3 residential building. The purpose of using the software is that it is user friendly and has unique features like it designs the structural components individually along with their analysis and results. Another useful feature of this software is that Shear force, Bending moment, Torsion diagrams at each level of the building can be viewed. The AutoCAD plan along with its specification from the construction site is selected. After studying the plan and its criteria designing the structural components of building namely slabs, beams, columns and footings are carried out. This is followed by manual design and comparisons of results obtained through software.

Keywords: STRUDS1, Analysis2, Design3, Slabs4, Beams5, Columns6, Footings7.

 

Authors: P.Guruswamygoud, M.Rajasekhar, V.Madhukrishna, N.Vijayakumar, P.Anil

Abstract: This paper presents the results of an experimental research on the workability and compressive strength of ordinary and standard concrete. Superplasticizers are commonly known as High Range Water Reducers (HRWRs) because it permits low water cement ratio as well as the workability also affected. In this paper the properties of concrete mixtures with three different dosages of superplasticizers SNF have been investigated. In this experimental programme superplasticizerfosracconplast 430wp of basically modified naphthalene/melamine formaldehyde sulphonate dispersion and having brown liquid confirming to IS: 9103- 1999 & IS: 2645, ASTM C 494/C494M, Type F has been used. The properties investigated are workability on the fresh state and compressive strength on the hardened state of concrete by using three mixes with three superplasticizer dosages (0.8%, 1% ,1.5%and 2%) is used. concrete mix M-20 by IS 10262: 2009, Concrete Mix Proportioning - Guidelines. Compressive strength at 7, 14 and 28 days was also determined. The graphs between different percentage of superplasticizers with W/C ratio and compressive strength are plotted. Overall 16 specimens (concrete cube) with the dimension of 150 mm x 150 mm x 150 mm were fabricated at laboratory.

The effectiveness of water-based curing compound (WBCC) applied to concrete surface at different elapsed time from casting on the various properties of OPC, silica fume (SF) and fly ash (FA) concrete. It also signifies the importance of utilizing moist curing prior to applying WBCC. A series of OPC cylindrical concrete specimens made with a constant water-binder ratio of 0.50 were prepared. For the first series, the casting surfaces were sprayed with WBCC after various elapsed periods from casting, 1, 2, 3, 4,24 hrs, while, for the second series, the casting surfaces were pre-cured with water for 1, 3 and 7days prior to the application of WBCC. The third and fourth series of samples were exposed to air and water curing regimes, respectively, until the age of testing (28 days). Various test techniques, namely strength, hardness, capillary absorption and porosity, were applied on the series of samples to assess their mechanical and durability related properties. It was found that the efficiency of WBCC is significantly dependent on the time of its application, used blending material, period of pre- water curing specified prior to its application and considered property of concrete. Increasing the time of application of WBCC from casting can lead to diminishing the possible positive effect of using such regime of curing.

Keywords: Curing Compounds, Silica Fume, Sorpivity, Fly Ash, Microstructure of Concrete, Admixture Modified Poly Carboxylate Concrete, Compressive Strength, Superplasticizer, Water Cement ratio and Workability etc.

Authors: G. Mahalaxmi

Abstract: Pervious concrete is a unique kind of concrete with high porosity. That reduces the water runoff particular site and promote to ground water recharge. In this project Silica Fume (S.F) be used in percentages as (0.5%,  5% and 10%) the mechanical properties were studied. Moreover, (0.05%, 0.1% and 0.15%) are the proportions of polypropylene fibers (P.P.F) by volume, which used to improve the pervious concrete mechanical properties. To study the physical and mechanical properties of hardened concrete containing compression strength, flexural strength and split tensile strength.

Keywords: Porous concrete, Silica fume, Polypropylene fibers, MIX proportion, Flexural strength, Compressive strength, Split tensile strength.

Authors: S Baliram, G. Nithisha, S. Ganesh, Y. Divya, M. Praneeth Kumar

Abstract: GLASS FIBRE REINFORCED POLYMER (GFRP) composite materials have developed economically and structurally viable construction materials for buildings and bridges over the last 20 years. FRP composite materials used in structural engineering typically consist of glass, carbon encased in a matrix of epoxy, polyester, vinyl ester thermosetting resins that have fiber concentrations greater than 30% by volume. They have been used in structural engineering in a variety of forms: from structural profiles to internal reinforcing bars for concrete members to strips and sheets for external strengthening of concrete and other structures. Depending on the form of the FRP product used in structural engineering, the FRP material is supplied either as a ready-to-use structural component such as a wide flange profile or a reinforcing bar, or it is supplied in its constituent forms as dry fiber and liquid polymer resin and formed and cured in situ to create a structural component.

Objective: Finding the mechanical properties of GFRP samples by conducting some laboratory test and comparing it with steel samples.

Conclusion: No corrosion effect has been detected on GFRP conservative estimates indicate fiber glass reinforced concrete structures will last longer than 100 years. It is the unique physical properties of GFRP that makes it suitable for applications where conventional steel would be unsuitable.

Authors: P. Guruswamy Goud, K.Teja Sri, P.Praveen, CH.Umakanth, A.Sravan Kumar

Abstract: The main objective of this study is to investigate the use of waste fibre materials in geotechnical applications and to evaluate the effects of waste polypropylene fibres on the shear strength of unsaturated soil by carrying out direct shear tests and unconfined compression tests on two different soil samples. The results obtained are compared for the two samples, and inferences are drawn towards the usability and effectiveness of fibre reinforcement as a replacement for deep foundation or raft foundation as a cost-effective approach.

 

Structures that are constructed on the expansive soil may have occurred several damages due to its hill swell-shrinkage behaviour. So, these type of soil ned to be stabilized in order to increase the shear strength of the soil, the durability of the soil as well, as to prevent from erosion. Various case studies have been carried out for these types of soil to increase the soil properties. In this case study, a raw fibre known as polypropylene fibre has been used to increase the soil properties and interlocking of the soil and have become one of the major practices used in construction work.

Authors: Syed Afzal Basha, Dr S Vinay Babu, K Anand, A Vinod Kumar

Abstract: In the current exploratory examination, an undertaking has been made to consider the properties of high strength concrete using the mix of stone powder and a super absorbent polymer (SAP) like sodium polyacrylate. In M60 evaluation of concrete, sand is supplanted with stone buildup and sodium polyacrylate is added while blending the constituents. Mechanical properties like compression, split tension and flexural strength have been surveyed and compared with the referral concrete. At later age, imperative upgrades in the mechanical properties of SAP intertwined concrete were taken note. SAP decreases the shrinkage in concrete and improves cement hydration which serves to increase the compressive strength. SAP retains pore solution during blending of concrete and conveys it when the relative humidity of pore framework gets diminished because of cement hydration. Expansion of SAP in concrete extends the speed of hydration of cement particles, which thusly adds to decrease in capillary porosity of the framework. Air relieving of concrete can accomplish a similar strength as that of regularly restored concrete; henceforth SAP is moreover sensible in water sparse zones.

 

Author: A.Sravani

Abstract: This paper is concerned with the experimental investigation of Concrete by partially replacing cement with Nano Silica. Nano Silica is the most abundant material with the chemical composition of SiO₂, which is similar to a diamond structure. It is a new pozzolanic material which in water takes solid or liquid form. It is popularly being used in the concrete industry to determine the viscosity and fill state of the concrete.

The tests were conducted on M25 grade concrete and the proportion of Nano Silica as a partial replacement to cement was taken in the order of 0%, 1%, 2%, 3% and 4% by weight. The laboratory tests which need to be performed on concrete specimens are the Compression strength and Splitting tensile strength test.

Authors: M.Rajasekhar^ , P. Guruswamy Goud,K. Prabhakar, V. Madhu Krishna, S. Baliram

Abstract:The world’s most consumed construction material is concrete made up of cement, aggregates, water and additives as it is found to be more versatile, durable and reliable. Concrete is the second most-consumed material after water, which required large quantities of Portland cement. The manufacturing process of Ordinary Portland Cement (OPC) results in the destruction of the environment due to the emission of CO2 as well mining also results in unrecoverable loss to nature. The amount of carbon emissions is increasing on an alarming scale, and hence, it is required to find an alternative material to the existing expensive cement-concrete. Geopolymer concrete is an alternative construction material that is produced by the chemical action of inorganic molecules. Fly Ash, a by-product of coal obtained from the thermal power plant, is abundantly available worldwide. Fly ash rich with silica and alumina activated with alkaline activators form aluminosilicate gel that acts as the binding material for the concrete. It is an excellent alternative construction material to normal concrete without using any amount of ordinary Portland cement. Geopolymer concrete shows a greener substitute for ordinary Portland cement concrete in some applications. This paper reviews the structural properties of Geopolymer concrete and its applications.

 

Authors: D. Naresh Kumar, S. Tejaswi

Abstract: Research into new and innovative uses of waste materials is continually advancing. Many highway agencies, private organizations, and individuals are in the process of a wide variety of studies and research projects concerning the feasibility, environmental suitability and performance of using recycled products in highway construction. It is necessary to utilize the wastes effectively with technical development in each field.

Reinforcement of fly Ash with synthetic fibers is potentially an effective Technique for increasing fly ash strength. In recent years, this technique has been suggested for a variety of technical applications ranging from retaining structures and earth embankments to sub-grade stabilization beneath footings and pavements. Several investigators have conducted research on different types of reinforcement and materials. However, the amount of information available on randomly oriented fiber reinforcement is still limited. Here an attempt is made to the suitability of different types of natural fibers reinforcing in fly ash with different percentages. By using this (i.e., fly ash) waste material effectively with reinforcing another waste material is a good idea for better cost-effectiveness and proper utilization.

The Gravel is a good material in flexible pavement construction of sub-base layer, but because of the shortage of high gravel quality; and the presence of high fines, it increases construction costs in certain regions of the country. Due to under these circumstances, we are utilizing coir, sisal and jute fiber materials are used as reinforcement material in the poor gravel and fly ash sub base courses laid with respect to expansive soil subgrade finally to reduce the expense of road construction, improve elasticity Nature. It was observed from the laboratory experimental data of modified compaction, Box shear, and California bearing ratio that the optimum level of coir, sisal and jute fiber is equal to 0.2% for Gravel, fly ash material.

By using this (i.e., fly ash), waste material effectively with reinforcing another waste material is a good idea for better cost-effectiveness and proper utilization in sub-bases to reduce the designed thickness of pavement layers and cost also.

Authors: S Gayathri, Ravi Kumar G, Dr. K Suguna

Abstract: Concrete is the vital material used in construction. Concrete the most extensively used construction material consumes natural materials leading to environmental concerns about utilization of raw materials and also emission of Co2 during production of cement. Portland cement industry is responsible for approximately 7% of global Co2 emission. Hence certain conventional micro materials like zeolite are available in the market which can be used as supplementary cementatious material (SCM) thereby enhancing the quality and performance of concrete and leading to less pollutant environment. An experimental investigation is carried out to evaluate the mechanical properties of concrete mixtures containing zeolite and coconut fibers in a binary blended system by replacing cement by zeolite up to 20%. Here optimum amount of coconut fiber and various percentages of zeolite are added by weight of cement to the concrete mixture. The structural strength of such a binary mix is investigated by studying their Mechanical properties. The Mechanical properties are examined by Compressive strength, Split Tensile strength and Flexure strength test. The replacement has shown improved strength compared with that of a conventional concrete.

Authors: Rohini. P, Prashanth Hugar, Venkatesh Kuruva

Abstract: Geomechanical properties of Black Cotton Soil are known by conducting a laboratory study of Lime and Alkali Resistant Glass Fiber (ARGF) when it is blended with black cotton soil. The utmost importance is to find the properties of the compaction characteristics of black cotton soil. The subsequent phase pivots on the Unconfined Compressive Strength values of a mixture of Black Cotton Soil with optimum content with the unreliable percentage of lime and ARGF. This study pivots on change in Unconfined Compressive Strength with curing period. The Unconfined Compressive Strength values are inflated with the inclusion of lime and ARGF BC soil. The unconfined compressive strength values are inflated with the curing period. Finally, the UCS values for different combinations like BC soil alone, BC soil and randomly distributed fiber like ARGF.

Authors: S. Baliram, Mydam Pavan, Sindhe Sandhya Rani, K.Adarsh

Abstract: The self-compacting concrete, also known as self-consolidation concrete, is in a position through go with the running and consolider below it as personal mass again it’s totally re-aeration tank definitely whilst jumping to the uniform layers. It is made of self-compacting concrete in particular, really helpful at any place putting it totally changed, like in very high building concrete contributors and it complex formed in the duration time. Self-compacting concrete goals of concrete lookup is blended effects of rice powder materials and sugar powder materials included to the self-compacting concrete in uniformly through making bigger the electricity again one higher stronger two combinations again white powder material moisture.

The houses of SCC have been studied in many researches due to their importance and conceivable to treatment the problems of concrete mix.  Rice  powder  materials  and  sugar powder materials once started to change cement in stepped attention of 0%, 5%, 10%, 15%, 20% and used to reap attribute compressive energy of M30 grade concrete combine and cured everyday water and Hydrochloric acid answer (HCL) in for extraordinary a lengthy time (7 days and 28 days) have been determined. Hydrochloric acid used  for  the  curing  of everyday  water  in  the  attention  of  1%,  3%,  5%.  This look-up is aimed to look at the degradation of self-compacting concrete (SCC) due to hydrochloric acid assault, particularly based totally on the measurement of compressive energy loss. The outcomes of excessive extent RHA  and  SCBA  at  0%  to  20%  cement  substitute  degrees  on  the  extent  of degradation to hydrochloric acid will be assessed in this study. Different types of combination materials to the various moisture powder combinations, substitute percentage, extent off notable moisture stronger and offers resistance to bettering purpose, have been equipped again treated. Once take  a  appear  at  consequences  to  the  conformed  traits  of  self  compacting  concrete  such  as compaction running and T50cm, V-shaped instrument, U-shaped instrument, T5 minutes and L-Box are presented.

Author: Abdur R. Kaoser

Abstract: Concrete structure is the most common all over the world. Cement is the major ingredient of concrete. Though the raw materials needed for manufacture of cement are available in most parts of the world, many countries have severe shortage of cement, although their needs are vast. The search for suitable substitute for cement, either partially or fully, has thus become a challenge for planning the development of many of the third world countries. At the same time, large-scale industrialization has led to newer environment problems related to disposal of industrial byproducts like fly ash. The thermal power stations existing in the world produce million tons of fly ash worldwide every year. There are large numbers of other industries, which also use coal for firing their boilers, producing large amounts of fly ash, which are generally collected by mechanical collectors. A large amount of land is being wasted for disposal of fly ash, which can otherwise be used for housing, agricultural, industrial or some other essential purposes. Moreover, during production of cement, a huge amount of CO2 is added to green-house gasses by burning coals which causes environmental pollution. It is well known that fly Ash is low cost material and use of fly ash in concrete reduces the amount of cement required. Thus use of fly ash in concrete minimizes the construction cost and improves the environment quality by reducing the emission of harmful gas like CO2 into air that caused during manufacturing of cement. In addition to economic and environmental benefits, the use of fly ash improves the durability, workability and fire resistance of concrete. It is observed from the previous researches that fly ash collected from electrostatic precipitator of thermal power plants is very much suitable for use in production of high performance concrete. This review paper focuses on the various durability properties of fly ash concrete.

Authors: S.Sebastin, M. Franchis David

Abstract: Concrete is one of the foremost prominent construction materials utilized within the field of gracious building. As a gracious Build the common evaluated life time of the building is 50 a long time. After 50 a long time life time the structure ended up out dated and the scrap esteem is substantial as it were for the wooden and basic steel components. Among basic components concrete have exceptionally destitute scrap value so that it cannot be utilized anywhere. This paper deals almost the possibility of utilizing the structural wastes as substitution for the fixings utilized in concrete. The material properties have been considered to find the substitution can be made for fine aggregate or coarse aggregate. Sieve analysis was performed to compare the possibility of utilizing for fine aggregate. Total impact test and water absorption test were carried out to find the possibility of utilizing it as coarse aggregate. The test comes about of material properties revealed the destroyed aggregate may well be a much better substitute for fine aggregate in structural concrete Cubes of size 100 mm x 100 mm x 100 mm were cast with the help of 10 mm coarse aggregates. The substitution proportion was made from 0 to 100 with the incremental value of 25%. The test comes about of the compressive strength revealed 100% utilization appears best among the other substitution proportions. The conceivable regions of applications moreover clarified.

Authors: Gangadhar S, Dakshayini R S, Dr. B.P. Annapurna

Abstract: The effect of polyester resin on durability of concrete is been studied for varying percentages of resin from 10% to 100% by volume of coarse aggregate, with a variation of 10% (10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% and 100%). The properties of polyester resin concrete have been studied for durability. The grade of concrete considered is M30. Tests are being carried out as per recommended procedures of relevant code. The results are compared with conventional concrete. It has been found that with the replacement of coarse aggregate by polyester resin varying percentage of resin from 10% to 100%, the weight of polyester resin concrete reduces varying from 2% to 23.8%. The durability of polyester resin is tested for chemical resistance of sulphate, chloride acid.

Authors: S.Sebastin, M. Franchis David

Abstract: The study of compressive strength and split tensile strength of self-curing concrete utilizing Super Absorbent Polymer(SAP) together with granite powder as partial substitution of fine aggregate (River sand). Super absorbent polymer utilized in this extend is sodium polyacrylate which gives the self-curing property. The 0.5 percentage of SAP is kept as a consistent amount all through the test. The granite powder is included in steps of 5 percentage from rate to 25 percentage. Seven mixes and forty two tests were compared with reference concrete. The fresh concrete testings and hard concrete testings were done. The fresh concrete testing like slump cone test is performed. The mechanical properties such as compressive strength and split tensile strength were tried and after that the results were compared with the control specimens. The qualities were checked for 7 days and 28 days curing periods. It is to check whether the self-curing concrete has predominant properties compared to ordinary cured concrete.

 

 

Authors: Abdur R. Kaoser, Khan M. Amanat, Munaz A. Noor

Abstract: This paper presents the influence of fly ash on durability properties of brick aggregate concrete. Two types of durability tests were evaluated. One is chloride ion penetration and another is sulfate resistance property of fly ash concrete. A lot of tests were done about chloride ion permeability and sulfate resistance properties of fly ash concrete all over the world. In those experiments, stone chips were generally used as coarse aggregate. In this experiment, locally available materials such as burnt clay brick chips as coarse aggregate, sand and fly ash available in Bangladesh (Indian fly ash) were used. Chloride ion penetration test was done as per British standard whereas a non-standard test method was adopted for checking sulfate resistance of fly ash concrete. For both chloride ion permeability and sulfate ion resistance test of fly ash concrete, three different types of concrete specimens based on percentages of fly ash replacement (0%, 15% and 30%) were prepared. Test samples were submerged in three different chloride-ion concentrated solutions such as 0.10 mol/L, 0.35 mol/L and 0.70 mol/L for chloride ion penetration test and three different sulfate-ion concentrated solutions such as 0.01 mol/L, 0.10 mol/L and 0.50 mol/L for sulfate degradation test of fly ash concrete. All tests were performed at three different ages such as 14, 28 and 90 days. It was observed from the experiment that concrete with fly ash exhibited better resistance to chloride ion penetration and sulfate degradation of concrete.  Thus fly ash increases the durability of concrete. Fly Ash is low cost material and use of fly ash in concrete reduces the amount of cement required. Thus fuel cost, needed for production of cement and emission of harmful gas like CO2 into air, during manufacturing of cement also reduce. Thus using fly ash in concrete is economical and also environmental friendly.

Authors: Shruti S Kubyal, Shivaprasad H

Abstract: Building energy-saving and safe evaluation for engineering structures have obtained worldwide attention. Transparent concrete is a concrete based building material with light-transmissive properties due to embedded light optical elements, usually optical fibres. Light is conducted numerical aperture Plastic Optical Fibres (POF) or big diameter glass optical fibre into the concrete. The main purpose is to use sunlight as a light source to reduce power consumption through the stone from one end to the other. Therefore the fibres have to go through the whole object. Transparent concrete is also known as translucent concrete and light-transmitting concrete because of its properties. It is used in fine architecture as a facade material and for the cladding of interior walls. Paper discusses the integration of merits of concrete and optical fibre, for developing transparent concrete by arranging the high of illumination and to use the optical fiber to sense the stress of structures. The paper discusses a new kind of building material, which can integrate green energy saving with self-sensing properties of functional materials are important for the construction industry. The evaluation of the effectiveness of the smart, transparent concrete, the light-guiding based on the white light test, long term durability and chloride ion penetration test and self-sensing property based on stress elasto optic effect test are made. The experiment results show that the smart, transparent concrete has good transparency, mechanical and self-sensing properties.

 

Author: AmanThakur

Abstract: The term "Strength and Durability of Concrete through Using Manufactured Sand" is used in this paper. It is described as the concrete's capacity to withstand weathering, chemical assault, and abrasion while preserving its desirable technical qualities throughout this process. The terms "strength" and "durability" refer to two independent aspects of concrete quality. They must be treated as two distinct ideas. A concrete with a higher strength does not always imply a concrete with a greater durability rating. At the same time, a concrete with superior durability is not required for a high-strength concrete. Strength should be provided solely as a need for the structure to be able to withstand the weights applied, not as a performance indication for durability. The use of a low/lower Water/Cement ratio or the use of particular types of additives that help achieve a higher strength, such as Super plasticizer, may be shared by high strength concrete and durable concrete. However, these are just a handful of the numerous principles that may be employed to develop a long-lasting concrete. In terms of durability performance indicators such as water absorption, compressive strength, split tensile strength, rebound hammer testing, and other durability testing parameters, a concrete of 25 MPa can be more durable than a concrete of 40 MPa or 50 MPa. We also substituted M-Sand with Ultra Tech OPC 53 to improve the strength and longevity of the concrete. M-Sand and River Sand are being compared to see which has the best strength and durability. To learn more about manufactured sand (M-Sand), which is being used as a river sand alternative in concrete building. Crushed hard granite stone is used to make manufactured sand. Since manufactured sand is made from firm granite rocks that are easily available in the area, transportation costs from a distant river sand deposit are reduced. As a result, the usage of produced sand as a construction material can help to keep building costs down. Another benefit of utilising M-Sand is that it is dust-free, and the sizes of the m-sand can be readily regulated to achieve the needed grading for the given structure.

Authors:-Kirankumar Jadav, Hirenkumar Patel

Abstract:-The work done by numerous researchers to replace cement with Rice husk ash has been investigated in this study, and their results have been collated. The whole construction industry is looking for an acceptable and effective waste product (rice husk, fly ash, crumb rubber, etc.) that may significantly cut cement usage and, as a result, building costs. Rice husk ash might be a green supplemental material with minor to large-scale uses. It can be used to waterproof a surface. It's also due to the additive, which helps the concrete resist chemical penetration. Various compressive strength, durability, flexural strength, and workability test findings have also been described in the literature. Cement concrete is an important component of low-cost construction materials. Rice husk is one of the waste items that may be utilised to make low-cost, lightweight concrete.

Authors:-Juhi Patel

Abstract:-Concrete is a composite building material that is widely utilised across the world's society. It has a few limitations, including as limited malleability, brittleness under tension, and minimal resistance to splitting. Concrete is a structural material that is used as frequently as feasible. The breakdown of the structure is mostly due to the concrete in the beam failing. As a result, extra care should be used when constructing the steel in the beam, as well as while casting concrete in the beam.

Authors:-Swetha SD, Dr. AR Rajendra

Abstract:-Plastics and coarse aggregate are replaced with waste known as green innovation. Rapid industrialisation and urbanisation have considerably improved infrastructure in the nation. This procedure produces a slew of issues, including a scarcity of building resources and increasing waste and other product output. The repurposing of discarded plastics as a partial substitute for coarse aggregate in M20 concrete is the subject of this research. The most common type of concrete used in building is M20. To replace the same quantity of garbage, waste plastics were increased to 0 percent, 10 percent, 20 percent, 30 percent, 40 percent, and 50 percent. To establish the physical qualities of coarse aggregates, granular aggregates, cement, and waste plastics, tests were conducted. The strength of 150 mm X 150 mm X 150 mm size blocks was evaluated for 3, 7, and 28 days. The results demonstrate that M20 concrete with waste plastic has a higher compressive strength.

Authors:-K. Santosh, H. Sreenidhi

Abstract:-The possibilities of utilising discarded glass as glass powder, glass aggregates, and recycled aggregates is investigated in this study. Humans have been forced to recycle trash by environmental contamination and rising production and storage expenses in our time. Crushed scrap concrete from laboratory test cubes and pre-cast concrete columns was used to create recycled aggregate. The concrete incorporating discarded glass and recycled aggregates had a higher compressive strength as a consequence of the study. Three different concrete compositions were put to the test. Concrete using natural aggregate as a control, as well as two varieties of natural fine and recycled coarse aggregate concrete. This necessitates the use of high-quality recycled concrete coarse aggregate as well as adherence to strict design and production guidelines. The specimen that contained both waste glass and repurposed concrete performed better than the one that solely included waste glass. The findings suggest that recycled brick aggregates can be utilised in place of regular brick aggregates in new building projects.

Authors: Keshav Singh, Pooja Bisht

Abstract: With the paucity of freshwater in densely populated regions, there is a pressing need for new and inventive experiments to turn wastewater into potable water. There has been a lot of discussion lately about the influence of Cashew Nut Shell Liquid (CNSL) industry treated wastewater (TWLW) on the following characteristics of concrete strength. This study effort is one of such discussions. They are compressive and split tensile in nature, and are tested in relation to portable water (PW). The TWW and PW samples were employed in four different ways in that application of a concrete mix of M30, which are designated as S-1, S-2, S-3, and S-4. The cubes and cylinders were cast and cured using these four water samples, which were aged for seven, fourteen, and twenty-eight days, respectively. The hardened concrete was subjected to compressive and split tensile strength tests, and the characteristics of TWW samples were evaluated before and after the concrete had been allowed to cure for 28 days, respectively. When the S-4 sample was compared to the Portable water S-1 sample, the results showed that the compressive and split tensile strengths were both enhanced. Because of this, CNSL TWW is confirmed to be suitable for use as mixing and curing water for M30 concrete with no harmful impacts on the concrete mix.