Abstract
Abstract The deterioration of concrete in places exposed to sulphate salts, chlorides and groundwater movement is a major problem. In this research, polymer concrete was produced by testing four mixtures using different sizes of aggregates with epoxy adhesive and two mixtures were reinforced with polypropylene fibers (0.5 and 1)% by weight of Epoxy in addition to the reference mix consisting of cement and sand. Compressive strength, electrical resistivity, ultrasonic pulse velocity, flexural and porosity testing were performed at ages 7, 14, 28, and 60 days. The highest compressive strength, electrical resistance, ultrasonic pulse velocity and zero porosity for mixture had a maximum size of sand less than 600 microns and more than 150 microns, where the rate of increase (272.9, 635.9, 45.9 and 57.7)% respectively compared to the reference mixture. The results showed also that the highest flexural strength was for the mix reinforced with 1% polypropylene fiber. In addition, the specimens at age 28 day submerged in the diluted solution of sulfuric acid at 5 and 10% for 11 weeks. The results showed that there were no change in the volume and weights of the specimens that were submerged.
Highlights
The deterioration of concrete in places exposed to sulphate salts, chlorides and groundwater movement is a major problem
Polymer concrete was produced by testing four mixtures using different sizes of aggregates with epoxy adhesive and two mixtures were reinforced with polypropylene fibers (0.5 and 1)% by weight of Epoxy in addition to the reference mix consisting of cement and sand
Compressive strength, electrical resistivity, ultrasonic pulse velocity, flexural and porosity testing were performed at ages 7, 14, 28, and 60 days
Summary
Abstract: The deterioration of concrete in places exposed to sulphate salts, chlorides and groundwater movement is a major problem. Polymer concrete was produced by testing four mixtures using different sizes of aggregates with epoxy adhesive and two mixtures were reinforced with polypropylene fibers (0.5 and 1)% by weight of Epoxy in addition to the reference mix consisting of cement and sand. Due to fast treatment, excellent bonds, reinforcing steel, high strength and durability of polymer concrete was widely used instead of ordinary concrete. Sibility of controlling many of its characteristics and its ability of cold formation (setting), it can resist chemical substances with high values [17] These specifications made us to search more and more to know its characteristics and the possibility of using it in places that need such a type of concrete. Density (g /cm3) Mix ratio (by weight) Mix ratio (by volume) Minimum hardening temperature ∘C Bone dry at 200 C (hours) Thorough hardened at 20∘C (days) Volume Shrinkage (%) compressive (N/mm2)
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