Survey on the Performance of Underwater Non-dispersive Concrete
Du Hao *
North China University of Water Resources and Electric Power, Zhengzhou, Henan 450000, China.
*Author to whom correspondence should be addressed.
Abstract
Ordinary concrete in the water is poured by the erosion of water flow when the dispersion resistance is insufficient, easy to make cement and aggregate separation, resulting in concrete compressive strength and work performance greatly reduced, and often must be complemented by cofferdam and other construction methods, high cost. And underwater non-dispersible steel fiber concrete can be poured directly in water, greatly simplifying the construction process, simple and economic. Because of the effect of flocculant, the concrete still has good working and mechanical properties when it is washed by water flow, This paper will discuss the influence of flocculants, water-cement ratio and water-reducing agent, mineral admixtures and nano-materials on the performance of underwater non-dispersible concrete in order to help the research of underwater non-dispersible concrete.
Keywords: Underwater non-dispersion, flocculant, mineral admixtures, nanometer material