Papers by sumanth Doodala
International journal of applied research, 2016
Self-compacting concrete (SCC) is a development of conventional concrete, in which the use of vib... more Self-compacting concrete (SCC) is a development of conventional concrete, in which the use of vibrator for compaction is no more required. Self-compacting concrete was first developed in 1988 to achieve durable concrete structures. Since then, various investigations have been carried out and this type of concrete has been used in practical structures in Japan, mainly by large construction companies. Investigations for establishing a rational mix-design method and self-compactability testing methods have been carried out from the viewpoint of making self-compacting concrete a standard concrete. In the present work two grades M20 SCC mix was developed using EAFNARC mix design concept to arrive at the proportions of aggregate. Compressive strength tests were conducted to know the strength properties of the mixes. A simple mix design procedure has been developed using EAFNARC mix design on SCC. Compressible packing model is used to arrive at the proportion of aggregates, cement content and fly ash content are obtained from previous studies and modified accordingly as per EAFNARC standards to achieve optimum mix proportions satisfying fresh properties, hardened properties and also economy.
International journal of applied research, 2018
Reactive Powder Concrete (RPC) is composed of very finesteel fibres and superplasticizer. This Co... more Reactive Powder Concrete (RPC) is composed of very finesteel fibres and superplasticizer. This Cohesive matrix gives ultra-high strength and durability properties. A comparison of the physical, mechanical and durability properties of RPC and high performance concrete (HPC) shows that RPC possesses better results compared to HPC. In order to increase the compressive strength of concrete even further than HPC, the only way is to remove coarse aggregate. This philosophy has been employed in what today known as Reactive powder concrete. The principal objective of this study is to prepare RPC120. In the present study, performance of reactive powder concrete without quartz powder and containing silicafume as a replacement for cement at the varying percentage of 0%, 5%, 10%, 15% and 20% by each is investigated. To compare the results of cement replaced mixture, specimens without cement replacement are also casted. Performance of the various mixes is tested by the Compressive strength, Flexure strength and Tensile strength. The results show improvement in compressive strength, flexural strength and Tensile strength in cement replaced mixes in Reactive powder concrete.
Self-compacting concrete (SCC) is a development of conventional concrete, in which the use of vib... more Self-compacting concrete (SCC) is a development of conventional concrete, in which the use of vibrator for compaction is no more required. Self-compacting concrete was first developed in 1988 to achieve durable concrete structures. Since then, various investigations have been carried out and this type of concrete has been used in practical structures in Japan, mainly by large construction companies. Investigations for establishing a rational mix-design method and self-compactability testing methods have been carried out from the viewpoint of making self-compacting concrete a standard concrete. In the present work two grades M20 SCC mix was developed using EAFNARC mix design concept to arrive at the proportions of aggregate. Compressive strength tests were conducted to know the strength properties of the mixes. A simple mix design procedure has been developed using EAFNARC mix design on SCC. Compressible packing model is used to arrive at the proportion of aggregates, cement content ...
International journal of applied research, 2016
Self-compacting concrete (SCC) is a development of conventional concrete, in which the use of vib... more Self-compacting concrete (SCC) is a development of conventional concrete, in which the use of vibrator for compaction is no more required. Self-compacting concrete was first developed in 1988 to achieve durable concrete structures. Since then, various investigations have been carried out and this type of concrete has been used in practical structures in Japan, mainly by large construction companies. Investigations for establishing a rational mix-design method and self-compactability testing methods have been carried out from the viewpoint of making selfcompacting concrete a standard concrete. In the present work two grades M20 SCC mix was developed using EAFNARC mix design concept to arrive at the proportions of aggregate. Compressive strength tests were conducted to know the strength properties of the mixes. A simple mix design procedure has been developed using EAFNARC mix design on SCC. Compressible packing model is used to arrive at the proportion of aggregates, cement content a...
Lightweight concrete has been used recently for many building structureswhere it became possible ... more Lightweight concrete has been used recently for many building structureswhere it became possible to obtain lightweight aggregate concrete with compressivestrengths similar to normal weight concrete. The main advantage of lightweightconcrete is a high strength to weight ratio compared with normal concrete. It meansreducing the gravity load of the building and its seismic inertial mass, resulting inreduced member sizes and foundation forces in seismic regions. This paper givesabout the mechanical and durable properties of rubberized lightweight concrete (RLWC) produced using crumb rubber as lightweight aggregate.The main goal of this study is to investigate the mechanical and durable properties ofthe rubberized lightweight concrete with mineral admixture. Crumb rubber was utilized as a partial substitution of fine aggregate atdifferent levels. The test results show that there is amethodical diminishing in the compressive strength, splitting tensile strength, andflexural strength with ...
Solid waste management is one of the major environmental concerns worldwide. In India, the scrap ... more Solid waste management is one of the major environmental concerns worldwide. In India, the scrap tyres are being generated and accumulated in large volumes causing an increasing threat to the environment. In order to eliminate the negative effect of these depositions and in terms of sustainable development, there is great interest in the recycling of these non-hazardous solid wastes. The potential of using rubber from worn tyres in many civil engineering works has been studied for more than 30 years. Applications where tyres can be used have proven to be effective in protecting the environment and conserving natural resources. In recent times with the increase in the demand for infrastructure and feasible foundation design in not applicable due to poor bearing capacity of ground soil stabilization has started to take a new shape. Stabilization is process of fundamentally changing the chemical properties of soft soils by adding binders or stabilizers, either in wet or dry conditions ...
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Papers by sumanth Doodala