The impermeability mechanism of self-compacting water proof concrete

The impermeability mechanism of water-proof self-compacting concrete (WPSCC) was studied. The mechanism and influential factors, such as water-cement ratio (w/c), dosage of powder, superplasticizer, sand content, aggregate content, fly ash, UEA, PP fiber, on compactibility and crack resistance of WPSCC were analyzed. A type of WPSCC successfully applied in tunnel liner with its validities, conveniences and economies by mockup test was developed and optimized. Experimental results show that the WPSCC has good workability, mechanical properties and impermeability when reasonable requirements are fulfilled.