Experimental Study on Optimal Mix Proportion of Plastic Concrete Based on Orthogonal Design Method
In this paper,the orthogonal test method is used to design the plastic concrete test scheme,and the SPSS software is used to analyze the variance of the test results and Duncan's multiple comparison to explore the influence of the three factors of the air-entraining agent content,the amount of bentonite and the water-binder ratio on the performance,and to find the optimal mix ratio meeting the design requirements.The results show that for the static compression modulus and compressive strength,the order of priority of the factors is the amount of bentonite,the water-binder ratio,and the air entraining agent content;The increase of bentonite content,water-binder ratio and air-entraining agent content is beneficial to elasticity,but unfavorable to com-pressive strength.For the permeability coefficient,the order of priority of is the water-binder ratio,the air-en-training agent content and the bentonite content;The increase of the amount of bentonite and the water-binder ratio is unfavorable to the anti-permeability,while the increase of the amount of air-entraining agent is favora-ble to the anti-permeability.This method finds out the relative optimum ratio of 0.02％air-entraining agent,60％bentonite and 0.95 water-binder ratio,and passes the verification.
Plastic concreteOrthogonal testAnalysis of varianceDuncan multiple comparisonRelative opti-mum mix ratio
国家科技期刊平台
NSTL
万方数据
维普
