透水混凝土的基本性能试验研究

发布时间：2018-04-16 02:21

本文选题：透水混凝土 + 强度　；参考：《混凝土》2017年08期

【摘要】：通过正交试验法研究了砂率、水胶比、设计孔隙率和增强剂掺量4个因素对透水混凝土抗压强度、抗折强度、透水系数、孔隙率等性能的影响以及透水系数与抗压抗折强度的关系,优选出配合比。结果表明:砂率和设计孔隙率对透水混凝土抗压强度、抗折强度、透水系数影响大,增强剂和水胶比影响次之;随着砂率的提高透水混凝土强度逐渐增大,透水系数逐渐下降;随着设计孔隙率的增大,强度逐渐降低,透水系数逐渐增大。当砂率在2%~4%、孔隙率在18%~20%、增强剂掺量在5%时,透水混凝土的强度与透水系数达到较优状态;通过试验数据的回归分析,分别建立了透水系数与抗压强度、抗折强度的关系式。
[Abstract]:The effects of sand ratio , water - cement ratio , design porosity and the amount of reinforcing agent on the compressive strength , flexural strength , water permeability coefficient , porosity and other properties of water - permeable concrete are studied by orthogonal test . The results show that sand ratio and design porosity influence the compressive strength , flexural strength and water permeability coefficient of water - permeable concrete , and the water permeability coefficient decreases gradually . As the sand ratio increases , the water permeability coefficient gradually increases . As the sand ratio increases , the water permeability coefficient increases gradually . As the sand ratio increases , the water permeability coefficient is gradually increased . As the sand ratio increases , the strength of the water permeable concrete and the water permeability coefficient are improved gradually . The relation between the water permeability coefficient and the compressive strength and the flexural strength is established through regression analysis of the test data .

【作者单位】：广州大学土木工程学院;广州市第四建筑工程有限公司;
【基金】：国家自然科学基金项目(51278135,51478128) 住房和城乡建设部科研开发项目(2010-K3-27,2010-k4-18) 广州大学重点科技项目培育项目(2015);广州大学产学研项目(2016) 广州大学-广州市第四建筑工程有限公司技术开发项目(2016)
【分类号】：U414

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