High-Performance Polymer Repair Concrete Containing Supplementary Cementitious Materials
Keywords:
High-Performance Repair Concrete; Sulfate-Resisting Cement; Silica Fume; Ground Granulated Blast-Furnace Slag (GGBS); Epoxy Resin; Polypropylene Fibers; Bond Strength; Durability; Humanitarian Engineering; Supplementary Cementitious Materials (SCMs)Abstract
This study presents the development and evaluation of High-Performance Polymer Repair Concrete (HPPRC) incorporating sulfate-resisting cement (SRC), silica fume, ground granulated blast-furnace slag (GGBS), epoxy resin, and polypropylene fibers. The goal is to provide a durable, practical, and cost-effective repair solution for deteriorated concrete structures, particularly in sulfate-rich and resource-constrained environments. Nine concrete mixes (M1–M9) were designed with varying ratios of supplementary cementitious materials and fixed polymer/fiber content. The experimental program included compressive, flexural, and slant shear strength testing at 28 and 90 days, as well as water absorption and slump tests. The results indicate that increasing the silica fume and GGBS content significantly enhanced the durability and mechanical properties of the repair concrete. The addition of 10% epoxy and 0.2% polypropylene fibers further improved matrix cohesion, crack resistance, and bond strength. All specimens were cured under realistic, non-laboratory conditions to simulate field performance. The findings confirm that the synergistic use of SCMs and polymers in HPPRC leads to improved performance, making it a viable option for sustainable infrastructure rehabilitation in humanitarian and challenging construction contexts.
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