掺橡胶颗粒透水混凝土的性能研究

发布时间：2018-05-28 03:20

本文选题：橡胶颗粒透水混凝土 + 抗压强度　；参考：《山东科技大学》2017年硕士论文

【摘要】：随着海绵城市、绿色城市的大力发展,具有良好透水性能的透水混凝土备受关注。透水混凝土具有高透气性、高透水性、自重轻、结构布满孔隙等特点。透水混凝土的应用可大量减少路面积水并将路面积水与地表连接,达到补充地下水的效果;同时,地表透过透水混凝土的孔隙与大气相沟通,调节城市的温度和湿度,缓解城市热岛效应[1]。因此,对透水混凝土的研究具有重要的实际意义。本试验将废旧橡胶轮胎粉碎后掺入透水混凝土中,制成掺橡胶颗粒透水混凝土,研究橡胶颗粒对透水混凝土的性能影响。通过试验研究,选用10目、30目和80目三种橡胶粒径,按照水泥质量的5%,10%和15%等体积取代2.35-4.75mm粒径的粗集料,设计出最佳配合比,通过制备橡胶颗粒混凝土来研究橡胶颗粒透水混凝土的抗压强度、透水性能、抗冻性能和飞散耐磨等性能。研究内容如下:(1)研究不同集料配合比下,普通透水混凝土的力学性能和实用价值,通过性能测试选出最佳的配合比作为橡胶颗粒透水混凝土的骨架配合比。(2)采用10目、30目、80目三种不同粒径的橡胶颗粒,分别以水泥质量的5%、10%、15%掺入普通透水混凝土中,研究加入不同种类、不同掺量的橡胶颗粒透水混凝土的强度、透水性能和变形能力。(3)将橡胶颗粒透水混凝土处于饱水状态(完全浸泡水中试验)、湿润状态(实验前浸泡水中,试验过程处于干燥环境)下分别进行冻融循环试验,然后将冻融循环后的透水混凝土和未冻融基准透水混凝土同时进行飞散磨耗试验研究,研究掺入橡胶颗粒的透水混凝土在两种状态下的冻融强度损失率、飞散质量损失率。
[Abstract]:With the development of sponge city and green city, permeable concrete with good permeability has attracted much attention. Permeable concrete has the characteristics of high permeability, light weight and porous structure. The application of permeable concrete can greatly reduce the amount of water accumulated on the road surface and connect it with the surface of the earth, so as to replenish the groundwater. At the same time, the surface can communicate with the atmosphere through the pores of the permeable concrete to regulate the temperature and humidity of the city. Mitigation of urban heat island effect [1]. Therefore, the study of permeable concrete has important practical significance. In this experiment, the waste rubber tire was comminuted into permeable concrete to make rubber particle permeable concrete, and the effect of rubber particle on the performance of permeable concrete was studied. Through experimental study, three rubber particle sizes of 10 mesh, 30 mesh and 80 mesh were selected to replace the coarse aggregate of 2.35-4.75mm particle size according to 5% and 15% of cement mass, and the optimum mix ratio was designed. The compressive strength, water permeability, freezing resistance and dispersion wear resistance of rubber particle pervious concrete were studied by preparing rubber particle concrete. The contents of the study are as follows: (1) to study the mechanical properties and practical value of ordinary permeable concrete under different aggregate mix ratios. Through the performance test, the best mix ratio is selected as the skeleton mix ratio of the rubber particle permeable concrete.) three kinds of rubber particles of different diameter, 10 mesh, 30 mesh and 80 mesh, are selected as the skeleton mix ratio of the rubber particle permeable concrete, and the rubber particles of different diameter are mixed into the ordinary permeable concrete with 5% of the cement mass and 15% of the cement mass, respectively. The strength, permeability and deformation ability of rubber particle permeable concrete were studied by adding different kinds and different amount of rubber particle permeable concrete. The freezing and thawing tests were carried out under the dry environment, and then the experimental study on the flyaway wear of the pervious concrete after freeze-thaw cycle and the unfrozen standard pervious concrete was carried out at the same time. The loss rate of freeze-thaw strength and flying mass of permeable concrete mixed with rubber particles in two states were studied.
【学位授予单位】：山东科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U414

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