High-Efficiency Low-Alkali Expansive Agent

Based on aluminum sulfate, alumina, etc. Produces shrinkage-compensating concrete when added at 8%-10% (by weight of cementitious material). Used for waterproofing structures, joint filling, crack-resistant structures.

I. Properties & Application Technology: Describes concrete behavior, strength, permeability, durability when using the agent. Dosage for specific expansion rates.

II. Usage Precautions: Detailed guidelines for mix design (minimum cement content, testing expansion rate) and construction practices (mixing, curing, placement sequences for long structures).