Publication: Effects of polyethylene glycol and fly ash in self curing mortar
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Date
2015
Authors
Yaser Ameen Ali Alshugaa
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Abstract
Curing is maintaining a sufficient water and temperature in concrete through its early periods to get the aimed properties of concrete. Curing is critical in production of concrete to ensure that concrete will have the durability and strength. In this project, Polyethylene glycol and fly ash were added as a self curing agents in mortar to determine the effects of self curing agents in term of Compressive strength. The mortar ratio was 1: 2.75 (cement: sand). Polyethylene glycol (PEG) was added first with different percentage 1%, 2% and 3% by weight of cement. Then, fly ash was added with different percentage 20%, 40%, 60, 80% and 100% by weight of cement. The w/c ratio was 0.45 to ensure the workability. All mortars were exposed to the fresh air (in the laboratory environment with 25 °C) for curing to see the effect of self curing agents. The result showed that, self curing agents have improved the strength of mortar. The mortar using polyethylene glycol has scientifically increased the strength by 31% compared to conventional mortar. And 1% was the optimum percentage. Fly ash enhanced the early age strength by 80% compared to normal mortar. Also, 20% of fly ash was the optimum percentage. Self curing is the answer of proper curing.
Description
TA436.Y37 2015
Keywords
Mortar - additives