Abstract
The assessment of environmental impact on concrete is an important aspect for its durability. The use of supplementary cementitious materials (SCMs) in the concrete can be enhanced the durability. This makes concrete sustainable and reduced environmental issues. In this research paper illustrate the experimental study on the performance of triple blend concrete made up of fly ash (FA) and rice husk ash (RHA) along with ordinary Portland cement (OPC). The current research the concrete composition was used as 20, 30 and 40% cement replacement by FA and RHA. The durability properties such as ultrasonic pulse velocity (UPV), electrical resistivity (ER), water absorption and carbonation depth of triple blend concrete were determined, and for microstructure performance formation factor and Scanning Electron Microscope (SEM) were performed. The improvement in durability was observed up to 40% replacement of cement. The durability of concrete improves with increase in formation factor. The SEM images proved the improvement in particle packing of concrete.
Highlights
The demand of durable and sustainable concrete is increasing in construction industry
The triple blend concrete mix of 80C1R10F10 was observed increased in ultrasonic pulse velocity (UPV) values by 5.13% and 5.33%, for 70C1R10F20 triple blend concrete mix was observed the increased in UPV values by 6.81% and 7.62%, for 60C1R10F30 triple blend concrete mix was observed the increase in UPV values by 7.96% and 8.80% with respect to control concrete
Whereas, increased in the UPV values at (7, 28, 56, and 90 days) for triple blend concrete for 10% type-2 rice husk ash (RHA) and 10% fly ash (FA) as cement replacement was increase by 2.24%, 2.60%, 4.16% and 5.75%, for 20% FA as cement replacement the UPV value increased by 3.51%, 3.68%, 5.09% and 6.46% than control concrete mix
Summary
The demand of durable and sustainable concrete is increasing in construction industry. Whereas, increased in the UPV values at (7, 28, 56, and 90 days) for triple blend concrete for 10% type-2 RHA and 10% FA as cement replacement was increase by 2.24%, 2.60%, 4.16% and 5.75%, for 20% FA as cement replacement the UPV value increased by 3.51%, 3.68%, 5.09% and 6.46% than control concrete mix.
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