摘要
内容采用三水平七因素正交试验法探讨影响多孔混凝土抗压强度和透水系数的因素,涵盖目标孔隙率、水胶比、骨料种类、硅灰掺量、粉煤灰掺量及搅拌方式.试验结果显示,影响抗压强度的因素主次顺序为目标孔隙率＞骨料种类＞水胶比＞搅拌方式＞硅灰掺量＞粉煤灰掺量,而透水系数的影响因素顺序为目标孔隙率＞骨料种类＞粉煤灰掺量＞水胶比＞搅拌方式＞硅灰掺量.研究为多孔混凝土的设计和应用提供了科学依据和实践指导.
Abstract
The study used a three-level seven-factor orthogonal experimental design to investi-gate the factors affecting the compressive strength and permeability of porous concrete,including target porosity,water-to-cement ratio,aggregate type,silica fume content,fly ash content,and mixing method.The research results showed that the main and secondary factors affecting compressive strength were target porosity,aggregate type,water-to-cement ratio,mixing method,silica fume content,and fly ash content,respectively.The factors affecting permeability were target porosity,aggregate type,fly ash content,water-to-cement ratio,mixing method,and silica fume content,respectively.This study provides scientific basis and practical guidance for the design and application of porous con-crete.
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