多孔改性水泥混凝土基层材料研究

发布时间：2018-02-25 02:01

本文关键词： 多孔改性水泥混凝土配合比基层材料　出处：《河北工业大学》2014年硕士论文　论文类型：学位论文

【摘要】：改性水泥混凝土铺筑沥青排水路面的基层，可避免基层表面滞水的存在，使进入路面结构内的水迅速排除，降低水损害和重轴载交通状况造成沥青路面出现的早期病害，延长路面使用寿命，降低经济损失。且改性水泥混凝土新型路面材料，具有施工简便，工艺易控，易保证工程质量的特点。为得出其良好的配合比，，本文运用正交试验分析比较目标孔隙率、骨料填实率等影响多孔改性混凝土配合比的主要因素，提出一种改性水泥混凝土的配合比设计方法和设计软件，为今后的改性水泥混凝土配合比设计提供依据；对改性水泥混凝土有效孔隙率与渗透系数、劈裂强度与抗压强度、弯拉强度与弯拉弹性模量的关系，以及混凝土长期性和耐久性及疲劳性能等进行了研究建立多个性能指标间的回归方程。并通过铺筑廊涿高速、大广高速等试验路段，以其实际通车后路段状况来验证配合比正确性，结果显示通车运行状况基本良好，没有出现一处翘曲、隆起、轮压、轮剪结构破坏和水损坏，未进行过挖补、罩面等养护维护，路用性能和工程安全性良好。
[Abstract]:The base course of asphalt drainage pavement paved with modified cement concrete can avoid the existence of stagnant water on the surface of the base course, remove the water entering the pavement structure quickly, and reduce the water damage and heavy axle traffic condition, which results in the early disease of asphalt pavement. The new type of modified cement concrete pavement material has the characteristics of simple construction, easy control of technology and easy guarantee of engineering quality. In order to obtain its good mix ratio, the main factors affecting the mix ratio of porous modified concrete, such as the target porosity and aggregate filling rate, are analyzed and compared by orthogonal test in this paper. This paper puts forward a design method and design software of modified cement concrete mixture ratio, which provides the basis for the design of modified cement concrete mix ratio in the future, and provides a basis for the effective porosity and permeability coefficient, splitting strength and compressive strength of modified cement concrete. The relationship between flexural strength and flexural elastic modulus, as well as the long-term properties, durability and fatigue properties of concrete are studied and the regression equations between several performance indexes are established. The correctness of the mix ratio is verified by the actual condition of the section after its opening to traffic. The result shows that the running condition of the traffic is basically good, and there is no warping, uplift, wheel pressure, failure of wheel shear structure and water damage, no maintenance and maintenance, such as excavating, covering, etc. Good road performance and engineering safety.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U416.216

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