COMBINED EFFECT OF RICE HUSK ASH AND FIBRES ON THE MECHANICAL PROPERTIES OF CONCRETE

Ramesh K¹, Basanth Babu K M², Yoganathan K R³, Sivasankar S⁴

¹Professor, Department of Civil Engineering, PSNA College of Engineering and Technology, Dindigul, Tamil Nadu.

²Professor, Dept. of Civil Engineering, PSR Engineering College, Sivakasi, Tamil Nadu.

³Professor, Dept. of Civil Engineering, K. L. N. College of Information Technology, Sivagangai, Tamil Nadu.

⁴Associate Professor, Department of Civil Engineering, Sree Buddha College of Engineering, Pattoor, Nooranad, Alappuzha District, Kerala.

Abstract

The current goal of the research is to examine the strength properties of hooked end steelfibrillated polypropylene hybrid fiber concrete with Rice Husk Ash (RHA) as a partial substitute for cement. The concrete consists of various percentages of steel fibers and polypropylene fibers, and cement is partially replaced by rice husk ash with 8% by weight. At 0.5% and 1% by volume fraction, hooked end steel fibers were included. The fibrillated polypropylene fiber was added at 0.5% by weight fraction. At 28 and 56 days, cube compression test, split tensile strength test on cylinder and flexural strength tests on prism were performed. Optimal combination of steel and polypropylene hybrid fibers was evaluated from test findings. Results confirmed that the combination of RHA with fibers enhanced the concrete strength properties at 28 and 56 days curing periods. Concrete with hybrid form gave more strength than fiber in mono form. Among all the mixes considered in this investigation, hybrid mix 1% steel + 0.5% polypropylene fiber gave the highest compressive strength, split tensile strength and flexural strength at both 28 and 56 days curing periods. In this mix, the compressive strength was increased by 29% and 31% at 28 and 56 days respectively than control concrete. The split tensile strength was increased by 38% and 46% at 28 and 56 days respectively than control concrete. The flexural strength was increased by 47% and 57% at 28 and 56 days respectively than control concrete. To validate the test results, statistical mathematical models were created. The results revealed that the empirical mathematical models are in concurrence with the actual test findings.

Keywords

• Rice Husk Ash,  Steel Fiber,  Polypropylene Fiber,  Strength Properties,  Statistical Mathematical Models.

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Cite this Article as Follows

Ramesh K, Basanth Babu K M, Yoganathan K R and Sivasankar S (2022). COMBINED EFFECT OF RICE HUSK ASH AND FIBRES ON THE MECHANICAL PROPERTIES OF CONCRETE. In Proceedings of the International E-Conference on Novel Innovations and Sustainable Development in Civil Engineering 2022 (1st ed., Vol. 1, p. 71). London, GB: ASDF International.