新型透水混凝土路面铺装材料的制备及性能研究
发布时间：2018-11-09 09:24
【摘要】：我国现阶段的综合实力不断增强,经济、文化、政治不断完善和发展,其中经济发展势头最为迅猛,也为我们城市带来了日新月异的变化,城市道路、基础设施等的建设作为城市“硬件”也在不断更新,与此同时,也产生了诸多不良的影响。例如:我们城市道路大多数道路路面材料为沥青混凝土材料,而沥青混凝土路面的不透气性和不透水性,直接导致了空气中的水分、降水并不能直接透过混凝土路面进入土壤之中,这便直接导致地表植物因缺乏水分而不健康生长或凋零死亡,空气水分和热量难以与地表进行良性的循环,从而导致了地表温度升高,产生了“热岛效应”。最重要的是混凝土路面的不透水性和不透气性导致了每逢雨季路面排水困难,只能依靠排水设施,如遇短时间大量降水,难于解决路面积水问题,从而大大降低了路面行车的舒适性,增大了行人雨天出行危险性,对道路交通和社会安全具有极大的隐患。本文针对混凝土路面的不透气性和不透水性给城市带来的 热岛效应‖、路面积水等问题,研究和制备高透水性的透水混凝土路面铺装材料以缓解上述问题,开展的具体研究工作如下:1.透水混凝土路面材料配合比设计。本文着重从材料方面入手,分别采用了碎石、轻型黏土陶粒、高强陶粒作为骨料,水泥净浆、树脂作为骨料粘结剂,制作不同种类的透水混凝土试件并设计实验方案进行抗压强度和透水系数试验,对不同类型的透水混凝土的抗压强度和透水系数进行分析,得出性能最优的透水混凝土的配比。2.透水混凝土数值分析。利用离散元颗粒流软件(PFC 3D)建立透水混凝土模型,并且模拟透水混凝土抗压强度试验,生成了透水混凝土试件在抗压条件下的应力变化曲线,与实测混凝土试件抗压强度进行对比分析,验证离散元模拟方法的可行性。3.透水混凝土耐久性试验。分别选取水泥和树脂胶结高强陶粒骨料这两种透水混凝土试件进行冻融循环试验,对比分析两种不同的胶结材对透水混凝土的抗冻性的影响,分析产生试验结果差异的原因,得出最佳的胶结方式。
[Abstract]:At the present stage of our country, the comprehensive strength is continuously strengthened, the economy, culture, and politics are constantly improved and developed. Among them, the economic development momentum is the most rapid, and it has also brought rapid changes to our cities, urban roads, The construction of infrastructure as the city's "hardware" is also constantly updated, at the same time, has also produced a lot of adverse effects. For example, most of our urban roads are made of asphalt concrete, and the impermeability and water permeability of asphalt concrete pavements directly lead to moisture in the air. Precipitation does not enter the soil directly through concrete pavements, which directly leads to the unhealthy growth or death of surface plants due to lack of water, and it is difficult for air moisture and heat to circulate well with the surface. As a result, the surface temperature increases and the "heat island effect" is produced. The most important thing is that the impermeability and impermeability of the concrete pavement make it difficult to drain the pavement during the rainy season, so it is difficult to solve the problem of water accumulation on the road surface if a large amount of precipitation occurs in a short period of time. Thus greatly reduces the road ride comfort, increases the pedestrian rainy weather travel danger, has the huge hidden danger to the road traffic and the social safety. In this paper, aiming at the problems of impermeability and impermeability of concrete pavement, such as heat island effect and water accumulation on the road surface, we study and prepare the high permeability permeable concrete pavement surfacing material in order to alleviate the above problems. The specific research work is as follows: 1. Design of mixture ratio of permeable concrete pavement material. In this paper, gravel, lightweight clay ceramsite, high strength ceramsite as aggregate, cement paste and resin as aggregate binder are adopted. The compressive strength and permeability coefficient of different kinds of permeable concrete were tested by designing the experimental scheme, and the compressive strength and permeability coefficient of different types of permeable concrete were analyzed. The optimum ratio of permeable concrete is obtained. 2. Numerical analysis of permeable concrete. The model of permeable concrete is established by using discrete element particle flow software (PFC 3D), and the compressive strength test of permeable concrete is simulated. The feasibility of the discrete element simulation method is verified by comparing and analyzing the compressive strength of concrete specimens measured. 3. Durability test of permeable concrete. Two kinds of pervious concrete specimens, cement and resin cemented high-strength ceramsite aggregate, were selected for freeze-thaw cycle test. The effects of two different cemented materials on the frost resistance of permeable concrete were analyzed, and the reasons for the difference of test results were analyzed. Come up with the best way of cementing.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U414
[Abstract]:At the present stage of our country, the comprehensive strength is continuously strengthened, the economy, culture, and politics are constantly improved and developed. Among them, the economic development momentum is the most rapid, and it has also brought rapid changes to our cities, urban roads, The construction of infrastructure as the city's "hardware" is also constantly updated, at the same time, has also produced a lot of adverse effects. For example, most of our urban roads are made of asphalt concrete, and the impermeability and water permeability of asphalt concrete pavements directly lead to moisture in the air. Precipitation does not enter the soil directly through concrete pavements, which directly leads to the unhealthy growth or death of surface plants due to lack of water, and it is difficult for air moisture and heat to circulate well with the surface. As a result, the surface temperature increases and the "heat island effect" is produced. The most important thing is that the impermeability and impermeability of the concrete pavement make it difficult to drain the pavement during the rainy season, so it is difficult to solve the problem of water accumulation on the road surface if a large amount of precipitation occurs in a short period of time. Thus greatly reduces the road ride comfort, increases the pedestrian rainy weather travel danger, has the huge hidden danger to the road traffic and the social safety. In this paper, aiming at the problems of impermeability and impermeability of concrete pavement, such as heat island effect and water accumulation on the road surface, we study and prepare the high permeability permeable concrete pavement surfacing material in order to alleviate the above problems. The specific research work is as follows: 1. Design of mixture ratio of permeable concrete pavement material. In this paper, gravel, lightweight clay ceramsite, high strength ceramsite as aggregate, cement paste and resin as aggregate binder are adopted. The compressive strength and permeability coefficient of different kinds of permeable concrete were tested by designing the experimental scheme, and the compressive strength and permeability coefficient of different types of permeable concrete were analyzed. The optimum ratio of permeable concrete is obtained. 2. Numerical analysis of permeable concrete. The model of permeable concrete is established by using discrete element particle flow software (PFC 3D), and the compressive strength test of permeable concrete is simulated. The feasibility of the discrete element simulation method is verified by comparing and analyzing the compressive strength of concrete specimens measured. 3. Durability test of permeable concrete. Two kinds of pervious concrete specimens, cement and resin cemented high-strength ceramsite aggregate, were selected for freeze-thaw cycle test. The effects of two different cemented materials on the frost resistance of permeable concrete were analyzed, and the reasons for the difference of test results were analyzed. Come up with the best way of cementing.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U414
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