Study on the permeability of cementitious sand and gravel material based on response surface analysis
In order to study the influence of different mix ratios on the permeability performance of cementitious sand and gravel,the mixture of fly ash,water-cement ratio and sand rate were selected,and the test results were analyzed by response surface method to obtain the sensitivity of the cementitious sand and gravel permeability coefficient on single factor and two factors.The results show that the fly ash and sand ratio are extremely sensitive to the permeability coefficient,and the water glue ratio is the lowest.The influence of the permeability is water cement ratio 22 kg/m3 and sand rate 20%,water cement ratio 1.0.
cementitious sand and gravelpermeabilityresponse surfacefly ashwater-cement ratiosand rate