Ashley Bachani ¹, Prakhar Duggal ¹, Ashim Mitra ¹

Affiliations
1 Department of Civil Engineering, Amity University, Noida - 201313, Uttar Pradesh, IN

Abstract

Objective: To analyze and study various mechanical properties of fly ash concrete with that of convention concrete and also to check at what percentage of fly-ash gives better and economic result. Methods: The cubes were being tested for their compressive strength using a compression testing machine as per the mix design. USPV is a recognized non-destructive test which is done to evaluate the quality of given concrete sample. It allows us to assess the condition of the ancient structures as well as maintain the quality of new structures. Fire test is carried out to check how concrete withstands all the different types of loads even with the increase in the temperature. Findings: The compressive strength of concrete will increase up to 25% replacement of fly ash and then will subsequently decrease. The compressive strength also reduces if the cement used is old. The workability of the mix increases with the increase in fly ash content even when the water cement ratio is kept constant. USPV Test analysis shows us that there is a better orientation of concrete mix particles with the increase in fly ash content. The packing of lime-fly-ash concrete cubes was found to be best for the ratio of 60% cement and 20% of lime and fly-ash each. Improvement: The use of fly ash in concrete is not a new practice and though much work has already been done in this field, it is a field of continuing research. Also to study the use of other chemicals as a binder material in fly ash concrete, for e.g. sodium silicate, sodium hydroxide etc. We can also study the effect of the addition of various admixtures in fly ash concrete. And also, study the effect of the addition of rice husk in fly ash concrete.

Keywords

Analysis, Comparison, Conventional Concrete, Fly-ash Concrete, Mechanical Properties.

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Swati Jha ¹, Prakhar Duggal ¹, Chiku Agarwal ¹

Affiliations
1 Department of Civil Engineering, Amity University, Noida – 201313, Uttar Pradesh, IN

Abstract

Objective: To analyze and study the durability aspects of concrete using Basalt Aggregate with that of convention concrete. Methods: The cubes were being tested for four kinds of test to clarify the modulation of compressive strength, flexural strength, fire resistance and water permeability of concrete by using basalt as aggregate as per the mix design. The tests were carried out with 50%, 30% basalt as aggregate. Comparative analysis between concrete with normal aggregate and concrete with basalt aggregate was performed for durability aspects. Findings: The results showed considerable increase in compressive strength, flexural strength, fire resistance value and water permeability value with 50% and 30% basalt as aggregate. The study suggests that basalt aggregate is better in terms of mechanical properties and more economical alternative for aggregate in terms of durability as compared to normal aggregate. Improvement: The use of basalt as aggregate in concrete is a new practice and though not much work has already been done in this field, it is a field with much potential. The intent of this project has been fulfilled with significant improvement of concrete properties in compression, tension and flexure.

Keywords

Basalt Aggregate, Compressive Strength, Fire Resistance Value, Flexural Strength, Water Permeability Value.

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