2014–15

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    Experimental And Analytical Work On Reinforced And Unreinforced Hollow Concrete Block Masonry Wall.
    (2015-12-29T11:44:15Z) Ashwin, CP; Manoj Kumar, VK; Prasanna Kumar, M; Abhisheka, HL
    Load bearing masonry has been one of the most commonly adopted type of construction since hundreds of years. Basically load bearing masonry is configured/designed to be stabled and later checked for strength. However the modern masonry construction, which adopts engineered blocks, is designed to withstand a combination of loads by virtue of reinforcement and grout concrete. It is important to evaluate the load carrying capacity, especially the axial load carrying capacity. In such cases, in this project work an attempt has been made to evaluate the load carrying capacity of “Reinforced Hollow Concrete Block Masonry” through experiment on full scale walls. The investigation includes the comparison of load carrying capacity (strength) of unreinforced Hollow concrete block masonry and reinforced hollow concrete block masonry. An attempt has also been made to evaluate the relative performance by analytical methods for which Finite Element Analysis and Mechanics Based Analysis has been employed. Prior to the test on full scale walls all the basic strength and elastic properties of masonry and its constituents has been studied. Based on the experimental and analytical studies it has been found that the efficiency of masonry with Engineered Hollow Concrete Block [EHCB], the relatively better than that with conventional block. Expectedly the load carrying capacity of reinforced hollow concrete block masonry is much higher than that of unreinforced hollow concrete block masonry, although the amount of reinforcement is only marginal. An important outcome of this project is that hollow concrete block masonry with nominal reinforcement and nominal grade of concrete is structurally efficient for load bearing masonry with the wall strength being close to 8MPa. This project report is presented in five chapters first chapter gives the introduction, review of literature, followed by objectives and scope of work, the methodology is also outlined in this chapter. Second chapter gives the strength and elastic property of masonry and its constituents. The third chapter gives the details of full-scale wall test carried out on URM and RM wall. The fourth chapter gives the details of analytical works and summary of results are presented in the fifth chapter.
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    Study On The Properties Of Road Pavement Using Waste Plastic In Road Construction
    (2015-12-29T11:37:42Z) Kasturi, Kalita; Naveen, Singh; Riya, Jain; Saket, Sing
    Due to increasing demand in highway construction, scientists and researchers are constantly trying to improve the performance of bitumen pavement. Asphalt concretes are widely used in pavements. Bitumen is the naturally occurring byproduct of crude oil. Due to increase in vehicles in recent years the road surfaces have been exposed to high traffic resulting in deformation of pavements due to excessive stress. Permanent deformation happens when pavement does not have sufficient stability, improper compaction and insufficient Pavement strength. Due to this increased usage of plastic the disposal of plastic has been difficult. Some studies say that 10million tones of plastic are produced in India and only 2million tones of plastic waste are recycled. Plastics have to be disposed or else it will be hazardous to nature and environment. The main objective of the project is to provide tools to evaluate and to improve the properties of pavement using waste plastic such that it may be more confidently employed in roadways and driveways.
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    Comparative Study Of Conventional Concrete With The Replacement Of OPC With GGBS As Mineral Admixture Using Chemical Admixture
    (2015-12-29T11:30:24Z) Gatham S, Sogalkar; Prajwal Joshua, Jose; Roopitha, Angeline
    The project presents the usage of Mineral admixtures (GGBS) and chemical admixtures (Poly Carboxylic Ether, Sulphonated Napthalene Formaldehyde and Glenium) with the replacement of OPC and comparing the same with the conventional concrete for the determination of strength parameters of concrete, of the three used chemical admixtures such as PCE, SNF and Glenium. A lot of research has been done on replacement of OPC with GGBS. However the amount of research conducted on replacement of both GGBS and chemical admixtures are quite less. In this project, comparing Compressive Strength of concrete with the replacement of Ground Granulated Blast Furnace Slag (GGBS) as Mineral Admixture of 60%, 70% and 80% of Cement in concrete and Poly Carboxylic Ether (PCE), Sulphonated Napthalene Formaldehyde (SNF) and Glenium at varying proportions. 1. Compressive Strength – 72 No. of cubes of 150mm*150mm*150mm. ( 2 cubes each for 3 days, 7days , 28 days curing period for 12 design mixes ) 2. Split Tensile Strength - 24 No. of cylinders of 150mm*300mm ( 2 cylinders each for 28 days curing for 12 design mixes )
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    Study Of Performance Of Cement Mortar By Partial Replacement Of Cement Using Rice Husk Ash.
    (2015-12-29T11:24:58Z) Aindrila, Biswas; Grishama, Ravindradas; Mousumi, Niogi; Subhadeep, Sengupta
    The cost of cement is going high day by day due to unavailability of limestone. Also cement manufacturing has a significant impact on the environment. It produces CO2 which is a major greenhouse gas. Rice husk ash is one of the promising pozzolonic material with high percentage of silica. Another beneficial factor is that the issue of disposal of the husk is solved. Rice husk ash gives better results when the particles are equal or finer than cement particles. Rice husk ash can be used in building construction in rural areas where availability of rice husk is in plenty. RHA is obtained from the burning of rice husk (outer covering of paddy) in parboiling plants. It has to be grounded before use. In this project we have used RHA as a partial replacement of cement. First initial testing of materials were done. The initial tests performed were specific gravity of cement, sand and RHA. Also initial and final setting time test was done. Normal consistency test was also performed. Physical and chemical analysis was done for RHA. Cement and RHA were taken in different percentages and tests were done to see the variation. We have used cement mortar cubes for strength testing and testing other properties. The cubes were of size 70.6 mm x 70.6 mm x 70.6 mm. The strength was checked after 7 days and 28 days. On hardened mortar cubes compressive strength test, water absorption test and density test were performed. The normal consistency values showed an increase with the increase of RHA
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    Systematic Development Of High Strength Concrete Using Engineered Coarse Aggregate And to Study The Effect Of Steel Fiber On Concrete.
    (2015-12-29T11:14:35Z) Rehman, PB; Siddanna G, Koodi; Venkatashiva Reddy, M; Vinay, AC
    Concrete mix design has become the important activity in the field of construction. Traditional concrete mix has been altered with supplementary cementitious materials as they result in several improvements in the strength and durability parameters also due to overall economy An effort has been made to study the behavior of cement concrete component materials added with admixtures, here chemical admixture master Glenium SKY 8233 is used it is different from tradition superplasticizers, unique mechanism of action that greatly improves the effectiveness of cement dispersion and mineral admixture Alccofine is used as a high range water reducer to improve compressive strength or as a super workability aid to improve flow The main aim of this project work is to systematic development of high strength concrete using engineered coarse aggregate, mineral and chemical admixtures with maximum cement content 450 kg/m3 and maximum water cement ratio 0.45 and less as per IS 456-2000, study the effect of steel fibers on enhancement of strain energy in the concrete. Concrete using above admixtures with regular ingredients. The water content ratio has been reduced because of addition of admixture. Cement concrete cubes, cylinders and beams were casted and tested for compressive strength, Young’s modulus, flexural strength. From this studies it is found that water cement ratio plays a vital role in HSC Mix design. Addition of Alccofine improves the compressive strength of concrete at all ages. Flexural strength obtained with admixture is significantly higher than without admixtures added to concrete mix, the split tensile test on HSC showed that the improvement of tensile strength. Water permeability test conducted on concrete to measure the resistance to penetration of water by Dins permeability standard. This project report is presented in five chapters. First chapter gives the introduction to High Strength Concrete [HSC]. Second chapter gives brief study on currently available literature regarding HSC. Third chapter gives experimental program-methodology followed for the conduction of various tests. The fourth chapter gives the detailed results and discussions and Conclusions are presented in fifth chapter.
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    Partial Replacement Of Silica Fume With Cement In Concrete
    (2015-12-29T11:09:40Z) Khumanand, Sarma; Rahul, Jha; Himanshu, Gautam; Roshan Sing, CH
    Studies on the performance of cementitious products with silica fume (SF) are very important, as it is one of the inevitable additives to produce high-performance concrete (HPC). In this study, some experimental investigations on the influence of SF on fresh and hardened state of concrete are reported. The properties included specific gravity of cement and workability of concrete with different Silica Fume contents. Further, strength developments in compression and tension in hardened concrete have also been studied at various Silica Fume contents. Silica Fume was varied from 0% to 20% at a constant increment 5% by weight of cement. Test results show that the SF changes the behavior of concrete significantly. It has been observed that the water–binder (w/b) (cement + SF) ratio seemed to play an important role for the performance of the products with higher SF contents. The early age hydration reactions of C3A and C3S increase with the addition of SF. The workability of concrete decrease as the Silica Fume content increases. Whereas the compressive strength and tensile strength shows increase as the increase in content of Silica Fume.
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    A Case Study On BAU Panel System In Fast Track Construction Technology
    (2015-12-29T11:03:57Z) Channa Basaveshwar, HT; Pradosh, Banerjee; Harsha, R; Shuchith, HM
    Prefabricated construction has been most common construction method; the concept of fast track construction in the most economical way has not changed since the beginning. However, new technologies have been developed to suit the modern world prefabricated construction. The main aim of this project is to create awareness about the bau panel technology and to implement the same. A case study involving construction of G+1 quarters at two areas in Bangalore namely (Police quarters, Adugodi) and (Fire Officers Quarters, Rajajinagar) has been undertaken for studying the construction process using bau panel technology and to compare its cost with conventional construction technique. Analysis for both techniques has been executed using ETABS software.