A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Engineering Properties and Durability of Mortars Containing New Nano Rice Husk Ash (RHA)
Abstract One of the most common corrosive attacks in harsh environments is the penetration of aggressive agents of chloride ions into the concrete reinforcement that leads to several destructive consequences such as reduction of serviceability and strength. Usage of industrial pozzolans can improve quality and serviceability of concrete structures in such environments. One of the most common pozzolanic substitutes for Portland cement is rice husk ash (RHA), which is a solid residue of rice husk controlled combustion and shows the highest pozzolanic activity among plant residues. Unfortunately, limited research has been carried out on the application of such materials in the mortar and necessary measures towards understanding the effect of the combination of nano-RHA and micro-RHA in cement mortars has not yet been taken. The purpose of this paper is to evaluate the effects of different added percentages of nano and micro RHA on compressive strength, electrical resistivity and rapid chloride migration test that were conducted up to 90 days on cement mortar specimens. The results showed that the replacement of cement with lower percentages of nano-RHA could enhance the early and long-term performance of mortars compared to that of mixes containing higher RHA content with micro size.
Engineering Properties and Durability of Mortars Containing New Nano Rice Husk Ash (RHA)
Abstract One of the most common corrosive attacks in harsh environments is the penetration of aggressive agents of chloride ions into the concrete reinforcement that leads to several destructive consequences such as reduction of serviceability and strength. Usage of industrial pozzolans can improve quality and serviceability of concrete structures in such environments. One of the most common pozzolanic substitutes for Portland cement is rice husk ash (RHA), which is a solid residue of rice husk controlled combustion and shows the highest pozzolanic activity among plant residues. Unfortunately, limited research has been carried out on the application of such materials in the mortar and necessary measures towards understanding the effect of the combination of nano-RHA and micro-RHA in cement mortars has not yet been taken. The purpose of this paper is to evaluate the effects of different added percentages of nano and micro RHA on compressive strength, electrical resistivity and rapid chloride migration test that were conducted up to 90 days on cement mortar specimens. The results showed that the replacement of cement with lower percentages of nano-RHA could enhance the early and long-term performance of mortars compared to that of mixes containing higher RHA content with micro size.
Engineering Properties and Durability of Mortars Containing New Nano Rice Husk Ash (RHA)
Balapour, Mohammad (author) / Hajibandeh, Erfan (author) / Ramezanianpour, AliAkbar (author)
2017-08-06
8 pages
Article/Chapter (Book)
Electronic Resource
English
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