长江口铁板砂作为路基路面材料的应用研究

Study on Iron Sand at Mouth of Changjiang River Used for Roadbed Pavement Material

该文结合工程实例,介绍了长江口铁板砂作为路基路面材料的应用研究。对江河砂,尤其是长江口吹填铁板砂这一特殊材料的路用性能、设计方法、施工工艺、工程实践还尚未进行深入研究,处于起步阶段。规范中更无相关内容。道路工程师对长江口吹填砂作为路基路面材料比如压实度、回弹模量、CBR值等设计指标更缺乏基础的认识和了解。因此,该项研究补充了以上认知内容,解决了工程中缺土的难题,对长江口铁板砂作为筑路材料其材料性质,混合料性能、施工工艺、控制指标等进行专项研究,从而为长江口铁板砂的推广应用提供指导和参考。

Combined with the engineering cases,the article introduces the study on the iron sand at the mouth of Changjiang River used for the roadbed pavement material.There is no further study on the road using performance,design method,construction technology and engineering practice of the river sand,especially this special material of the iron sand hydraulically filled at the mouth of Changjiang River.Its study is just at the starting stage,and no more related contents are in the standard.The road engineers are short of the basic knowledge and understanding on the design indexes,i.e.the compaction degree,resilience modulus,CBR value and etc.of the sand filled at the mouth of Changjiang River used for the roadbed pavement material.Therefore,this study replenishes the above cognizing contents,solves the difficulty of no soil in this project,and specially studies the material properties,mixture properties,construction technologies and control indexes of the iron sand at the mouth of Changjiang River used for the road paving material so as to provide the guidance and reference for its popularization and application.