Research on the preparation and performance of anti-washout underwater concrete
The effects of water-binder ratio,flocculant and fly ash content on the fluidity,compressive strength and imperme-ability of underwater concrete were investigated using single variable method and orthogonal experimental method.The results show that the flocculant has the greatest effect on the fluidity of concrete.To ensure good fluidity of concrete during construction,the dosage of flocculant should not be too high.Using a suitable amount of fly ash instead of cement can save economic cost and im-prove the fluidity of concrete.The water-binder has the greatest impact on the compressive strength and impermeability of con-crete.When the water-binder ratio is 0.39,the flocculant dosage is 3.0%,and the fly ash dosage is 15%,the compressive strength and impermeability of anti-washout underwater concrete are the highest.