Experimental study on water permeability coefficient of early age concrete considering permeability threshold
The water permeability coefficient is an important indicator for evaluating the durability of concrete.In order to clarify the in-fluence of various experimental variables on the water permeability coefficient of concrete,the stable permeability method is used to sys-tematically explore the effects of water-cement ratio,aggregate content and curing age on the water permeability coefficient.It has found that as the aggregate content increases,the water permeability coefficient of concrete gradually decreases.Once the aggregate content ex-ceeds 50％,the permeability coefficient begins to increase due to the influence of the permeability threshold.When the water-cement ratio changes from 0.3 to 0.5,the water permeability coefficient of concrete will significantly increase with the increase of the water cement ra-tio.Within the curing age of 28 d,the water permeability coefficient of concrete significantly decreases with the increase of curing age.
万方数据
维普
