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Development of High Performance Concrete

Development of High Performance Concrete

Making of High Performance Concrete, which is chiefly used as a building material in the major and mega infrastructure and projects, is a very big task. Though the recent advancements have dominated the barriers of the preparation of high performance concrete, the use of green materials such as Meta kaoline, Silica Fume, Fly Ash and Rice Husk Ash is limited. Apart from the green materials, numerous conventional and mineral admixtures are available in the current market, which enhances the quality and performance of the concrete such as Metakaoline, Alccofine and Silica Fume etc. The quality of concrete mixture is evaluated through various mechanical properties like compressive strength, flexural strength and split tensile strength and various durability tests like rapid chloride penetration test RCPT , sorptivity test, chloride resistance test, accelerated corrosion test and sea water attack test are carried out to analys the performance of HPC. The prime objective of this research study is to evaluate the structural strength of high performance concrete by utilizing green and pozzolanic material as supplementary cementitious material. This research study primarily focuses on the development of empirical correlations for estimating the 7 days and 28 days compressive strength with sufficient workability diverse range of water cement ratio for concrete mixes. Detailed laboratory investigations are performed covering almost all available supplementary cementitious materials like Meta kaoline, Silica Fume, Fly Ash and Rice Husk Ash nearby area of Madhya Pradesh state of India. This Research study helps in identifying the influence of Meta kaoline, Silica Fume, Fly Ash and Rice Husk Ash on the strength characteristics of HPC. The use of alternative material of Portland Cement leads to reduction of emission of harmful gases and impact on production capacity of cement manufacturing plant. This research work will enhance and accelerates the decision making process in the pre construction as well as post construction stages of any infrastructure projects. Further the above developed empirical model can be applied for all manufacturing of high performance concrete using supplementary cementitious material. These developed correlations can offer excellent engineering judgment and assist in decision making process for the structural evaluation of the HPC during pre construction and post construction stages. Faizan Abid | R C Patil | Rakesh Sakale "Development of High Performance Concrete" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-2 , February 2018, URL: https://www.ijtsrd.com/papers/ijtsrd10745.pdf Paper URL: http://www.ijtsrd.com/engineering/civil-engineering/10745/development-of-high-performance-concrete/faizan-abid

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Study on Behaviour of Hybrid Fibre Reinforced Cementitious Composites

Study on Behaviour of Hybrid Fibre Reinforced Cementitious Composites

This paper highlights the material properties of the Bendable concrete for the effective development of new structures and maintenance of existing structures. The material researchers have conducted a lot of experiments based on sustainability, durability and safety point of view. As a result of the attempts, finally a new material was established in the last decade. The proper selection of the fibre, mixing of the composite exhibit strain hardening and multiple cracking behaviour of the material. The strain hardening behaviour of the Bendable concrete gives significant advantage under flexural loading. The crack width developed under loading is very small when compared with conventional concrete due to the bridging effect of the fibre. The material properties of Bendable concrete reinforced with following 0.5 , 1.0 , 1.5 , 2 of steel fibre and 0.1 , 0.15 , 0.2 , 0.25 of polypropylene fibre. The optimum strength attained at 1.0 of steel fibre and 0.1 of polypropylene fibre and has been claimed to be the most promising proportion of the fibre content. A series of experiments were carried out to determine the compressive strength, tensile strength and flexural characteristics of Bendable concrete. Meena J | Uma Nambi J "Study on Behaviour of Hybrid Fibre Reinforced Cementitious Composites" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-2 , February 2019, URL: https://www.ijtsrd.com/papers/ijtsrd21516.pdf Paper URL: https://www.ijtsrd.com/engineering/civil-engineering/21516/study-on-behaviour-of-hybrid-fibre-reinforced-cementitious-composites/meena-j

142 views • 7 slides


A Review Study on Effect of Steel Fibre and Marble Dust with Strength of Pavement Quality Concrete

A Review Study on Effect of Steel Fibre and Marble Dust with Strength of Pavement Quality Concrete

There is growing interest in the construction of concrete pavements, due to its high strength, durability, better serviceability and overall economy in the long run. The thrust nowadays is to produce thinner and green pavement sections of better quality, which can carry the heavy loads. The high strength steel fibre reinforced concrete is a concrete having compressive strength greater than 40MPa, made of hydraulic cements and containing fine and coarse aggregates; and discontinuous, unconnected, randomly distributed steel fibres. The present study aims at, developing pavement quality concrete mixtures incorporating marble dust as partial replacement of cement as well as steel fibres. The aim is to the design of slab thickness of PQC pavement using the achieved flexural strength of the concrete mixtures. In this study, the flexural, compressive and split tensile strength for pavement quality concrete mixtures for different percentage of steel fibres and replacement of cement with marble dust are reported. It is found out the maximum increase in flexure strength, compressive strength and split tensile strength is for 0% Marble Dust and 1% Steel fibre. Also it has been possible to achieve savings in cement by replacing it with marble dust and adding fibres. This study also shows that in view of the high flexural strength, high values of compressive strength and high values of split tensile strength, higher load carrying capacity and higher life expectancy, the combination of 10 to 20% marble dust replacement along with addition of 0.5 to 1% steel fibres is ideal for design of Pavement Quality Concrete (PQC). Krishan Kumar | Sumesh Jain"A Review Study on Effect of Steel Fibre and Marble Dust with Strength of Pavement Quality Concrete" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017, URL: http://www.ijtsrd.com/papers/ijtsrd151.pdf http://www.ijtsrd.com/engineering/civil-engineering/151/a-review-study-on-effect-of-steel-fibre-and-marble-dust-with-strength-of-pavement-quality-concrete/krishan-kumar

48 views • 4 slides


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