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- 2017
基于响应面法的石灰-矿渣/生土复合材料热湿综合性能
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Abstract:
采用石灰和矿渣作为改性材料制备石灰-矿渣/生土复合材料，利用响应面法研究石灰掺量、矿渣掺量和含水率对石灰-矿渣/生土复合材料热湿综合性能的影响，对石灰-矿渣/生土复合材料的制备工艺进行优化。结果表明，石灰掺量、矿渣掺量和含水率均对热湿综合性能产生影响；通过回归分析得到石灰-矿渣/生土复合材料的制备优化方案是石灰掺量（石灰与复合材料的质量比）为10.19%、矿渣掺量（矿渣与复合材料的质量比）为4.02%、含水率（水量与复合材料的质量比）为9.00%，且优化石灰-矿渣/生土复合材料平均平衡含湿量为12.725%，导热系数为0.798 W/（m · K），具有良好的热湿综合性能；通过结构分析可知，在碱性激发和微集料作用下，优化石灰-矿渣/生土复合材料内部呈现出完整、密实的结构体系特点，兼顾材料的力学、耐久性和热湿性能。 Lime and slag could be used to prepare lime-slag/soil composites. The effect of lime content, slag content and moisture content on heat & moisture comprehensive property of lime-slag/soil composites was studied by response surface methodology and the preparation technology for lime-slag/soil composites was optimized. The results show that heat & moisture comprehensive property is influenced by lime content, slag content and moisture content. Optimal program is obtained by regression analysis that lime content (mass ratio between lime and compo-site) is 10.19%, slag content (mass ratio between slag and composite) is 4.02%, and moisture content (mass ratio between water and composite) is 9.00%. Average equilibrium moisture content of optimal lime-slag/soil composites is 12.725%, thermal conductivity is 0.798 W/(m·K), optimal lime-slag/soil composites have favorable heat & moisture comprehensive property. Under the effect of alkaline excitation and micro aggregate, optimal lime-slag/soil composites have the whole and compact construction through structural analysis, and reasonable mechanical performance and heat & moisture comprehensive property. 国家杰出青年科学基金（51325803）；国家自然科学基金（51278419）
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