| 掺橡胶粉的路面水泥混凝土微细观结构改性机理研究 |
| Study on the Microstructure Properties of Rubberized Concrete Pavement |
| 投稿时间：2014-06-09 |
| 中文关键词:橡胶粉混凝土 界面结构 混凝土裂纹 改性机理 |
| 英文关键词:Rubberized concrete pavement Interfacial structure Concrete crack Modification mechanism |
| 基金项目:河北省交通运输厅科技计划项目（Y 2012026） |
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| 中文摘要: |
| 采用扫描电镜技术对掺橡胶粉路面混凝土中集料 水泥石界面及断裂形貌进行表征，并结合混凝土的物理和力学性能，综合分析胶凝体系的水化过程，推测橡胶粉对混凝土微细观结构的改性机理。胶粉的掺入可有效地阻止混凝土裂纹的发展，提高路面混凝土的延性，降低脆性，增强抗裂性等。 |
| 英文摘要: |
| In this work, the interfacial structure of the aggregate cement matrix of the rubberized concrete pavements, as well as the failure morphology, is characterized by the SEM technique. Combining with the study of concrete physical and mechanical properties, the hydration process is analyzed, leading to the hypothetic concrete modification mechanisms for the rubber powder. It is suggested that the the development of concrete cracks can be inhibited by the addition of rubber powder, which can explain the improvement of concrete ductibility, decreases of brittleness, and the enhancement of the crack resistance. |
| 李彰.掺橡胶粉的路面水泥混凝土微细观结构改性机理研究[J].石家庄铁道大学学报：自然科学版,2015,(3):40-43. |
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