Research on Effect of PVA Fiber to Concrete Anti-cracking Performance

Aiming at the four surge shafts of Jinping II hydropower station diversion tunnel,by mixing different mixing amount PVA fiber to research concrete cracking performance test,it gets the best PVA concrete fiber mixing amount is 0.9%.Based on the result,it discusses the mixing proportion of PVA fiber concrete and puts forwards the adaptation advice of construction site pumping.