| Sugarcane bagasse ash as supplementary cementitious material in cement composites: strength, durability, and microstructural analysis |
| Yogitha Bayapureddy1, Karthikeyan Muniraj1, Muni Reddy Gangireddy Mutukuru2 |
1Department of Civil Engineering, Vignan’s Foundation for Science, Technology, and Research (Deemed to be University), Guntur, Andhra Pradesh 522213, India
2Department of Civil Engineering, Andhra University, Visakhapatnam, Andhra Pradesh 530003, India |
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Received: March 6, 2020; Revised: April 11, 2020 Accepted: May 3, 2020. Published online: September 30, 2020. |
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| ABSTRACT |
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Agricultural wastes like sugarcane bagasse ash and rice husk ash can be reused as supplementary cement materials to produce eco-friendly buildings as plants of grass family contain more silica, which enhances the pozzolanic reactivity of the plant ashes. Researches so far were limited to evaluate the strength and few durability properties. This paper focuses on the reactivity among cement particles, a microstructural approach towards analyzing the material, and its performance. Compressive, splitting tensile strength tests, durability tests like water absorption and RCPT have been performed for 5%, 10%, 15%, and 20% replacement of sugarcane bagasse ash in cement. An increase in strength, less absorption, and low permeability were observed from 0 to 15% replacement. 15% replacement of SCBA in concrete cured for 56 days has shown maximum durable compared to other samples that are cured for 28 and 56 days. The enhanced performance of PPC owes to thick lattice formed due to compounds formed, which lead to the densification of concrete. |
| Key words:
Cement · Sugarcane bagasse ash · Pozzolanic activity · Rcpt · Micro structure |
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