Parameter Optimization of High Performance Composite Mortar Based on Response Surface Methodology
[Purposes]This paper aims to study the design parameters of the mix ratio of high-performance composite mortar.[Methods]The Box-behnken test design method was used to study the ef-fects of three independent variables on the compressive strength of high-performance composite mortar,namely,the content of silica fume,the water-binder ratio and the ratio of quartz powder to quartz sand.The optimal mix ratio parameters were obtained by the response surface prediction and verification.[Findings]The compressive strength of high-performance composite mortar decreased with the increase of water-binder ratio.With the increase of silica fume content,it increases slightly,but the increase is small.With the increase or decrease of quartz powder/quartz sand,the degree of effect is not obvious.[Conclusions]The established model can predict the results more accurately in the test range,and the response surface method is accurate and scientific in the optimization of the mix ratio parameters of high-performance composite mortar.
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