Performance of Saw Dust Ash Blended OPCLaterized Concrete in Sulphate Environment
Journal Title: American journal of Engineering Research - Year 2019, Vol 8, Issue 1
Abstract
The performance of saw dust ash blended ordinary Portland cement laterized concrete in sulphate environment was investigated. 100mm cubes of 1:2:4 mix proportion and 0.75 water/cement ratio were cast. The concrete specimen were exposed to magnesium sulphate solution for 7, 14, 28 and 56days. The compressive strength of the cubes were measured at the end of the exposure periods.The results indicate that the compressive strength of the sawdust ash(SDA) blended ordinary Portland cement (OPC)laterized concrete decreased with increasing SDA content and increased with increasing curing age in water. The compressive strength of laterized concrete decreased with increasing MgSO4 concentration, except at 56-day where it was noticed that at 3% MgSO4 concentration, SDA laterized concrete experienced a slight increase in strength.The study concluded thatthe pozzolanic activity of sawdust ash enhanced the resistance of laterized concrete to sulphate attack at exposure period of not earlier than 56days.
Authors and Affiliations
ATA Olugbenga
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