Research on Reducing Shrinkage Behavior of Ground Granulated Blast Furnace Slag Geopolymers Using Polymer Materials

Geopolymers are a new type of environmentally friendly cement-based material with serious drying shrinkage problems. In order to overcome this problem and improve the engineering performance durability geopolymers, in study we added 0%, 0.3%, 0.5%, 0.7%, 0.9% polymer materials, namely, polyacrylamide, sodium polyacrylate, tetraborate, respectively, geopolymers reduce their degree shrinkage. We also assessed changes length determine how addition materials could The results indicate that 0.7% tetraborate yielded most favored shrinkage, and, through imaging technology, crack change at age 0–3 days was measured, during which polyacrylamide (PAM) effectively slowed down dimensions propagation by 0.47% compared control group.