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

Authors:-Mahesh S M, Shreyas B V, Vanishree B

Abstract:-Concrete is an important and successful material in the construction industry for a long time. It has so many applications and utilization in the construction field. Due to advancement in technology and constantly increasing economy, construction industry develops in everlasting leaps and bound day by day. This boom in construction, demands massive amount of concrete to be produce to satisfy the current need. This enormous quantity of concrete requires a deal of quality raw material which produce concrete. As raw material is the second largest consumed material by human kind, the natural raw material which produced concrete is day by day become scare. This paper presents that it is important for developing the concrete with high filling capacity. The optimum mix proportion of super plasticizer and viscosity agent was clarified for the concrete with high filling capacity. It was found that there exists the suitable viscosity of paste for improving not only the deformability but also the segregation resistance, which is highly dependent on the volume of free water in fresh concrete. This creates a technological challenge to work out certain materials which fulfill this task.

Authors: Supriya D. trimbake, Kaveri m. Vadage, Chetan b. Bhamare, Vinay n. naikwade, Roshan s. kapadnis

Abstract: Steatite is a talc-schist, subpart of metamorphic rock & compost 50% to 80% of talc & magnesium .It produced in a zone where tectonic plate broke the rock by heat & pressure but without melting .We can say dynamo thermal metamorphism and metasomatise phase. Steatite is used for inland designs sculpture, coasters &kitchen (making bowl, cooking slabs etc.) & sinks. Inuit use soapstone for traditional carvings. Soapstone is a soft stone used to create moulds for creating objects & slick surface of soapstone allows finishing object to be easily removed.

Authors: Khyati V. Mistry, Bijal Chaudhri

Abstract: Paper making generally produces a large amount of solid waste. Paper fibres can be recycled only a limited number of times before they become too short or weak to make high quality paper. It means that the broken, low- quality paper fibres are separated out to become waste sludge. To reduce disposal and pollution problems emanating from these industrial wastes, it is most essential to develop profitable building materials from them. Keeping this in view, investigations were undertaken to produce low cast concrete by blending various ratios of cement with Lime sludge. This paper is concerned with experimental investigation on strength of concrete and optimum percentage of the partial replacement by replacing cement via 10%, 20%, 30%, 40%, 50%, and 60% of Lime sludge. Keeping all this view, the aim of investigation is the behaviour of concrete while adding waste with different proportions of Lime sludge in concrete by using tests like compressive strength.

Author: Meenakshi Rathod

Abstract: In this research, adsorption of Arsenic on fuller’s earth has been studied through using batch adsorption techniques. Main objectives of this study are, to study the physical properties of Fuller’s earth, detection of Arsenic removal by adsorbent as a function of contact time, adsorbent dosage and pH, to study sorption kinetics. The results of this study showed that the Optimum contact time, dosage and pH for adsorption of Arsenic on Fuller’s earth reached to equilibrium after 110mins, with removal efficiency of (79.30%), 2000mg as optimum dosages. Higher adsorption of Arsenic was observed at higher pH, obtained at pH 8.0, the rate of adsorption of Arsenic obeys first order rate equation. The obtained results of the batch experiments are best fit to Langmuir and Freundlich adsorption isotherms. From the experimental analysis it is concluded that Fuller’s earth shows good removal efficiency and hence can be used as adsorbents.

Authors: Sheikh Shakib, Sharmin Zaman

Abstract: Marine structures adversely affected by corrosion of rebars. In order to assess the structural health, prediction of the amount of mass loss of rebars is important. In this context, an experimental investigation was done to find a relationship between crack width and level of corrosion. An impressed current technique was employed to accelerate the corrosion process. The crack width was measured by image analysis. In this research, a linear relationship was found between the crack width and mass loss. There was a level of corrosion about 32 mg/cm2 was needed to an appearance of surface cracking.

Author: Chethan Kumar. S

Abstract: Concrete is the most common material used in construction. India is one among the many countries facing a serious problem on biomedical waste disposal, hospital wastes mainly consists of needle, syringes, scalpels blades glass & ash from in incineration of any biomedical waste which also includes cotton dressing solid plasters casts & plastic wastes 64% of LDP , 32% of HDP & 4% of polypropylene. In concern of this, a biomedical waste rule 2011 proposed by the Ministry of Environment and Forests (MoEF), According to which hospital wastes contains 8 categories of wastes each as to segregated by single colour bag thus clears the confusion over the colour coding of contains used for disposal of biomedical waste. Now this is a study on uses & performance of hospital waste in concrete.

Authors:-D. Ashokkumar, D. Chandrasekar

Abstract:-

Nowadays, the performance required for concrete structures is more complicated and diversified. The early stage deteriorations of concrete structures are a result of the manual placing and the inadequate consolidation. The concrete is required to have properties like high fluidity, self-compact ability, high strength, high durability, better serviceability and long service life of concrete structures. Self-compact ability is desirable to attain rationalized and labour saving effects in manufacturing and placing of concrete. Self-Compacting Concrete completely fill the formwork and passes through the congested reinforcement without segregation.
Self-compacting concrete (SCC) is a highly engineered concrete that addresses these requirements. Several studies in the past have revealed the usefulness of fibers to improve the structural properties of concrete like ductility, crack resistance etc. In this project Binani Chopped Strands (6 mm) water dispersion glass fibers and Recron 3s (12 mm) polypropylene fibers will be added to self-compacting concrete. This study was conducted to investigate the use of Binani Chopped Strands (0.06%) and different percentages polypropylene fibres (0.1%, 0.2%, and 0.3%) as volume of concrete. The mix design has been arrived based on nan-su method for high grade of concrete. In SCC, cement is replaced by 40% of fly ash. The admixtures of Glenium 8233 and Glenium stream 2 were used. This experimental study is carried out to evaluate fresh properties, mechanical and durability properties (Na2SO4, HCL, H2SO4, marine environment, sorpivityand impact test) of SCC and Hybird Fiber SCC (HFSCC) and to investigate the structural performance of corroded deep beams made with SCC and HFSCC. The laboratory tests conducted on the different number cubes and four numbers of corroded deep beams were conducted. Deep beams were tested under two point load test to investigate the structural performance such as strain in concrete & steel, initial crack & crack patterns, ultimate load and load deflection curve.

 

Authors:-K. Sathes Kumar, T. Sathanandham, Vijayan. V

Abstract:-This research describes an experimental investigation of spilt tensile behavior of basalt wrapping specimen. The purpose of this research is to investigate the mechanical properties with basalt fiber reinforced polymer grid. Basalt fibers were thought to have great potential as reinforcement in both polymer materials and in concrete. However, this research focused on the use of basalt fiber reinforced polymer composites. In the specimen the basalt fiber is wrapped with partially on top & bottom, middle and fully of the concrete binding with epoxy resin. In this paper to determine the test result on spilt tensile of Basalt Fiber Reinforced Polymer (BFRP) composite wrapped specimens evaluated by using epoxy .The main aim of this paper to increase tensile strength.

Authors:-Vimal kumar N. Patel, C.D.Modhera

Abstract:-In countries like India and elsewhere, the natural aggregate resources had already reached at alarming rate due to day by day high demand of construction activities in recent years. On the other hand, million tons of Construction and demolition wastes are generated which can be utilized as a partial replacement of natural coarse aggregate and desired mechanical properties of recycled aggregate concrete can be achieved with the use of mineral admixtures. AS individual properties of recycled C&D waste aggregate is different than that of natural aggregate, the use of such recycled aggregate will differ the workability property of concrete mix. Present study investigated the effect of recycled C&D waste aggregate (RA) and mineral admixtures Metakaolin on to the fresh properties of concrete. Results reveal that workability of concrete mix decreases with percentage increase of recycled C&D waste aggregate and decrease with the percentage increase of Metakaolin

Authors: H S Jayatheertha, Vinay Kumar K S, Vinay Venkatesh

Abstract: Soil stabilization is a technique in which the properties of soil are improved and maintained at stable conditions so that it is capable of carrying the loads coming on it. This technique is used in many engineering works like road construction works, in providing base and sub base course layers etc. It can also be used to reduce the permeability and compressibility characteristics of the soil that will be used in construction of hydraulic structures. In using the soil which has been stabilized, the cost of construction also reduces to some extent. Presently in this project, Black Cotton Soil has been stabilized. The various stabilizers used were Lime, Granite Dust. Lime was added as constant percentage of 5%. Granite dust and was added in varying percentages of 10%, 20%, 30%.

Authors:-Prof. Pawar Praveen

Abstract:-In this experimental investigation total 18 no’s of specimen were casted by varying method of compaction, cross section and different grade of infill concrete. Keeping Area (A), thickness(t) and length as constant. It is difficult for compaction in long steel tube columns with the help of needle vibrators so in this experimental investigation the effect of method of compaction is studied for short columns with and without compaction and the load carrying capacity is compared with codal provisions (Euro Code 4, 1994, American concrete institute, 1999., American institute of steel construction, 1999).

 

Authors: Avinash Marathe, Snehal Ghuge, Yuvaraj Patil, Yogesh Deore

Abstract:  Concrete is the most commonly used for construction. The need of high Strength concrete is increasing day by day. The test carried out on concrete specimens with 0,6,12,18% replacement of cement by Metakaolin and FlyAsh together. Concrete is very strong in compression but very weak in tension. However it is reported that tensile and bending strength of concrete is 10 to 15% of the compressive strength respectively. The addition of different types of pozzolonic material in concrete have significantly improves its compressive as well as tensile strength. In the present study Metakaolin and FlyAsh are used in the concrete mixes and compressive of the specimens to be tested. A total of (4+4) mixes are to be prepared by varying the percentages of Metakaolin and FlyAsh on M 40 and M20 grade of concrete mix. Certain properties such as workability, later age strength development and few durability characteristics due to the addition of fly ash in concrete improves. Concrete is the high volume of fly ash and metakaolin as a partial replacement of ordinary Portland cement. The conventional concrete M40 and M20 are made with the mixture of metakaolin and fly ash in order to evaluate different properties based on concrete and compare with conventional mix .From the optimization 18% cement replacement by metakaolin and flyash superior than all the mixes.

 

 

 

 

Authors: V. Vedha Narayanan, S. M. Kumaran, A. Karthick

Abstract: Conventional cement concrete has a long way in the journey of building materials of about 30 decades has served number of applications. Depending up on the application of concrete, the mix proportion, admixture and mode of transport varies. Let us discuses about various application of concrete in this paper.

Authors: Darshan Khairnar, Abhijit Sanap, Jawahar Kumar, Kishor Chaudhari, A. N. Dhatrak, R.R.Lomte

Abstract: With high ductility and sufficient durability, fibre reinforced concrete (FRC) is widely used. Various types of fibres such as steel, carbon, glass and polyester are generally used in concrete. Among the new advancement in field of FRC is the basalt fibre reinforced concrete. In the present study basalt chopped fibres were used in the concrete mixes and workability, compressive strength of the specimens was tested. A total of 4 mixes were prepared by varying the percentages of basalt fibres by weight of cement on M 25 grade of concrete mix. The experimental test result demonstrated a considerable increase in compressive strength. The workability of fresh concrete mixes is decreasing by increasing the percentage of chopped basalt fibre. However workable concrete mix is achieved up to 1.5% of Chopped BasaltFibre.

Authors: V. Vedha Narayanan, S. M. Kumaran, A. Karthick

Abstract: Conventional cement concrete has a long way in the journey of building materials of about 30 decades has served number of applications. Depending up on the application of concrete, the mix proportion, admixture and mode of transport varies. Let us discuses about various application of concrete in this paper

Authors: D.Surendran, M. Boopathi, J. Balaji Praveen, S. Ayswarya

Abstract: Today concrete is most widely used construction material due to its good compressive strength and durability. Depending upon the nature of work the cement, fine aggregate, coarse aggregate and water are mixed in specific proportions to produce plain concrete. Plain concrete needs congenial atmosphere by providing moisture for a minimum period of 28 days for good hydration and to attain desired strength. Any laxity in curing will badly affect the strength and durability of concrete. Self-curing concrete is one of the special concretes in mitigating insufficient curing due to human negligence paucity of water in arid areas, inaccessibility of structures in difficult terrains and in areas where the presence of fluorides in water will badly affect the characteristics of concrete. The present study involves the use of shrinkage reducing admixture polyethylene glycol (PEG 400) in concrete which helps in self curing and helps in better hydration and hence strength. In the present study, the affect of admixture (PEG 400) on compressive strength, split tensile strength and modulus of rupture by varying the percentage of PEG by weight of cement from 0% ,0.5%,0.75%,1%,1.25%,1.5% were studied M25 mix. It is also studied with 0.35% of polypropylene fiber. It was found that PEG 400 could help in self curing by giving strength on par with conventional curing. It was also found that 0.75% of PEG 400 for weight of cement was optimum for M25 grade concrete with and without polypropylene fiber for achieving maximum strength without compromising workability. It is also found that polypropylene fiber gives more strength than conventional concrete.

Authors: Vijaylaxmi .B.V, Sneha. P , Ashwini. S, Sachin.H,  S.Gangangoudar

Abstract: Japan in the 1980’s was the first country who developed the idea of Self Compacting Concrete (SCC).  The use of Self Compacting Concrete (SCC) in the precast concrete is very common in many European nations and the USA. The use of Self Compacting Concrete(SCC) in the ready-mixed concrete business,  is restricted to certain limits and also limited to specific projects despite all the advantages it offers. One of the principal causes, why Self Compacting Concrete (SCC) is not used in the ready mixed business, is its high cost associated with such mixes. By mixing an innovative Viscosity Modifying Agent (VMA) with a Superplasticizer, the production of Smart dynamic concrete(SDC) is has been made possible.

In this study mix design method for obtaining SCC and SDC is based on absolute volume concept starting with a volume of paste was adopted. The method involves very few trails for obtaining SCC and SDC. Nine SCC and SDC mixes were developed using cement contents of 375 kg/m3 and 450 kg/m3 with the fixed water content of 190liters/m3 for all the trails for dif erent paste contents of 0.39, 0.41 and 0.43 and 230 kg/m3 and 280 kg/m3 with the fixed water content of 165 litres/m3 for all the trials for dif erent paste contents of 0.30, 0.32 and 0.34 respectively. The powder content varied from 545kg/m3 to 662kg/m3 for SCC and 361 kg/m3 to 460 kg/m3 for SDC. Water to powder ratio by mass ranged from 0.28 to 0.34 for SCC and 0.36 to 0.45 for SDC. Cubes of 150 mm were cast and tested at 1day, 7days and 28days. Based on the study it is very clear that the compressive strength and split tensile strength of SCC and SDC increases with the volume of paste for the same water and cement ratio. The compressive strength versus the water cement ratio follows Abrams hypothesis and use of filler materials not only makes the mix cohesive but also increases the long term strength. The modified method of mixing with the polycarboxylic ether based super plasticiser can be advantageously used for enhancing the flowability of mix.

Authors: N. Mohamed Azhar, N. Karthika, 

Abstract: This research finds the impacts of adding the steel fibres to a high standard-strength reinforced concrete columns mainly only to the cover of the columns. Early cover spalling occurs when an internally reinforced concrete column is concentrically loaded with excessive force; the column expands laterally due to Poisson effect. The inner core is restrained with the lateral reinforcement leaving the outer cover restrained only by tensile stresses at the cover core interface, forcing the cover to break away. The load at which this phenomenon occurs is called the cover spalling load. The loss of concrete cover significantly reduces the cross-sectional area and consequently, increases the stress on the column.

 

Authors: Sandeep Kokate, Nagesh Shelake, Ajit Joshi

Abstract: Integration of new material as a partial course aggregate and fine aggregates replacement in concrete production will be able to lower high dependency of manufacturer of concrete on current aggregate supply that may lead to ecological imbalance when natural material is used excessively. This project presents the assessment on the characteristic of laterite aggregate obtained from Konkan region before discussing  on the influences of this local material towards properties of normal concrete. Concrete mixes containing 0%, 10%, 20% and 30% laterite aggregate and 25% and 50% of laterite sand replacement level were cast before subjected to water curing for 7 and 28 days. Compressive strength test and flexural strength will be conducted in accordance to the existing standard. This experimental research examines the impact of laterite aggregate, as a small replacement to cement and aggregate various attributes of the concrete block. Research has done on M30 grade mix with the use of laterite aggregate as a minor or partial replacement by the weight of cement. The study is conducted to detect the flexural strength, compressive strength of the concrete blocks.

Author: J. Mytheli

Abstract: Bubble deck slab practices hollow spherical balls made of reused plastic, and hence it is an innovator process of virtually eliminating the concrete part in the middle of the conventional slab.Bubble deck slabs are suitable for use in all building types especially in commercial, educational& institutional building. Bubble deck is manufactured as a slightly pre-cast element. The site erection and installation are easy and fast. It is one of the green and sustainable method. In this cross batching and intermediate support are also eliminated.

Author: Harish B A

Abstract: This paper presents the results of the experimental investigation of compressive strength of steel fibre reinforced concrete (SFRC). Variables considered in the project work of various shapes and fiber volume fractions. Using a mix of M20 grade and hooked, flat, crimped fibres with aspect ratio 50 compressive strength is investigated. The fibre volume fraction is varied from 1% to 2% by volume of concrete separately. Standard test specimens for compressive strength were cast and water cured for 28 days. At 1% addition of steel fibres 25%, recycled coarse aggregate with water cement ratio 0.55 compressive strength tests gives best results.

Authors: Uzair Khan, Mohmmad Aslam, Shivam Agrawal, Rachit Pachauri

Abstract:This study shows an experimental study on fibre reinforced concrete with steel and nylon fibres. The work involve two type of mixes, the first consists of different percentages( 0.5%, 0.75% and 1%) of nylon fibre, the second uses different percentage ( 0.5%, 0.75%, and 1%) of steel fibre were cast and cured . The length of the fibre was 30 mm.The examples were observed after the seven days and 28 days for their compressive strength. After the experimental studies, the results showed that by increasing the quantity of steel and nylon fibres the compressive strength of fibre reinforced concrete also increases.

Author: Vikram J

Abstract: The project deals with the experimental study on the performance of high strength concrete by application of pre-tensioning to the concrete before concreting. In case of structural elements which are subjected to high stressing or loading can be made sustained by making the structural element able to with stand the imposed load. In this study, a high strength mix of M40 were casted where in other specimens were made with the help of applying the pre-stressing by stressing cables in single and double profile and casted after initial stressing in done. Because of applying pre-stressing, the element behaves in such a manner to develop its ability to withstand a higher load than the concrete specimen made out of control mix. The performance of this element casted will show a unique behavior than the control mix under flexural stress. The comparative study of the pre-stressed and plain concrete is studied experimental and their corresponding results were obtained.

This study will exhibit the ability of pre-stressed concrete over the plain concrete. It is expected to know the different types of construction procedures that are to be implementing, and different types of design mixes for designing of beams. It is also expected to know the procedures adopting for different techniques for casting of the pre-stressed beams. Thus it can be concluded that pre-stressing provides a means for the most efficient use of concrete.

Authors:Prashant Kumar, Rakesh Kumar, Y K Gupta

Abstract: This paper investigates the study of durability and workability appearances of Self-Compacting Concrete (SCC) with Viscosity Changing Admixture (VMA), and containing Class F fly ash. The experiments are carried out by assuming a water-powder ratio of 0.3, 0.4, 0.45, 0.5, and 0.6 .Workability of  fresh concrete is measured by using tests such as: slump flow, T50, V-funnel, L-Box and U-box tests. In comparison to normally vibrated concrete (NVC), Self-Compacting Concrete (SCC) possesses higher qualities and improves good productivity and working conditions. This research is to compare the Compressive Strength of Self-Compacting Concrete (CBI Method) and Normal Concrete.

Authors: Kamal B, Alamelu G

Abstract: Recently, technologies are developing in the field of building materials, specifically for manufacturing of concrete and those concretes are mixes with a combination of different materials. Fine aggregate, Cement,coarse aggregate and water are the major constitutes of concrete that are achieved naturally. Thus we can replace different new elements instead of natural sources like M Sand, Metakaolinfly ash, etc.In this research, coarse aggregates are partially replaced with 20%, 30%, 40% and 50% of Kadappa stones and the concrete mixes are formed based on the Indian Standard specifications.Fresh and stiff concrete attributes are estimated by workability test, compressive strength and split tensile test with a set water-cement ratio 0.5. We can obtain 16.70% of extra compressive strength in M20 Concrete by using Kadappa stones.