| 黄英姿,孔洲斌,夏志伟,王晨程,文 强.球模型包裹法设计含砂透水混凝土及其性能的研究[J].水泥工程,2024,37(6):15-18 |
| 球模型包裹法设计含砂透水混凝土及其性能的研究 |
| Study on the design and performance of permeable concrete with sand using ball model wrapping method |
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| DOI： |
| 中文关键词: 透水混凝土,裹浆厚度,透水系数,抗压强度,净浆,砂浆 |
| 英文关键词: pervious concrete,coating thickness,permeability coefficient,compressive strength,clean slurry,mortar |
| 基金项目: |
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| 摘要点击次数: 57 |
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| 中文摘要: |
| 针对球模型包裹法设计透水混凝土，明确含砂透水混凝土的设计步骤，并提出利用骨料总表面积、浆体密度、质量之间的关系测量骨料裹浆厚度的方法，开展净浆流动度、砂浆流动度、加砂量对骨料裹浆厚度和混凝土抗压强度、透水系数的影响研究。结果表明，提出的裹浆厚度测试方法准确度较高，可用于指导球模型包裹法进行透水混凝土设计；净浆和砂浆流动度越大，骨料包裹厚度越小；混凝土抗压强度随着骨料裹浆厚度的增加而增加，透水系数随着裹浆厚度的增加而减小。掺入单级配石英砂后对混凝土有增强效果但对透水性能有影响，所用石英砂掺量宜控制在6%以内。研究成果实现工程应用，效果良好。 |
| 英文摘要: |
| In view of the design of pervious concrete using the ball model wrapping method, the design steps of sand containing pervious concrete were clarified, and a method for measuring the thickness of aggregate slurry using the relationship between total surface area of aggregates, slurry density, and mass was proposed. The influence of net slurry flowability, mortar flowability and sand addition on the thickness of aggregate slurry, compressive strength of concrete and permeability coefficient was studied. The results show that the proposed method for testing the thickness of the slurry has high accuracy and can be used to guide the design of pervious concrete using the ball model wrapping method; The greater the fluidity of the slurry and mortar, the smaller the thickness of the aggregate wrapping.The compressive strength of concrete increases with the increase of aggregate slurry thickness, while the permeability coefficient decreases with the increase of slurry thickness. The addition of single graded quartz sand has a strengthening effect on concrete but has an impact on its permeability. The amount of quartz sand used should be controlled within 6%. The research results have been applied in engineering with good results. |
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