机制砂防腐蚀混凝土在工程建设中的应用研究——以潮惠高速建设项目为例  

Research on Application of Manufactured Sand Corrosion Proof Concrete in Engineering Construction:Take Chaohui Expressway construction as an example

作　　者：郑宇欣 揭继兴 ZHENG Yuxin;JIE Jixing(Guangdong Province Freeway Co Ltd,Guangzhou,510000,China;Xiaoning Institute of Roadway Engineering,Guangzhou,510641,China)

机构地区：[1]广东省高速公路有限公司,广州510000 [2]广州肖宁道路工程技术研究事务所有限公司,广州510641

出　　处：《科技和产业》2023年第16期254-262,共9页Science Technology and Industry

摘　　要：河砂资源的匮乏成为高速公路建设的一个制约问题,采用机制砂代替河砂使用成为基建项目的发展趋势。依托潮惠高速开展了花岗岩碎石制作机制砂代替河砂制备防腐蚀混凝土的技术研究,针对机制砂防腐蚀混凝土应用环节缺乏系统技术指导问题,建立机制砂防腐蚀混凝土的性能指标体系。分析机制砂生产加工关键工艺并提出推荐设备组合及参数设置;提出机制砂产品的关键性能指标控制标准,针对不同强度等级混凝土配合比设计给出推荐范围;对高速公路不同应用场景下机制砂防腐蚀混凝土的防腐蚀性能提出要求及检测方法。依托项目开展实体试验梁对照试验,比对梁体结构强度及防腐蚀性能,验证所建立机制砂防腐蚀混凝土性能指标体系的工程可行性。The shortage of river sand has become a restricted problem in expressway construction,and the use of machine-made sand instead of river sand has become the development trend of infrastructure projects.Based on Chaohui Expressway,the technology research on the preparation of corrosion-resistant concrete with machine-made sand instead of river sand was carried out.In view of the lack of systematic technical guidance in the application of corrosion-resistant concrete with machine-made sand,the performance index system of corrosion-resistant concrete with machine-made sand was established.The key process of sand production and processing was analyzed,and the recommended equipment combination and parameter setting were put forward.The control standard of key performance indexes of manufactured sand products is put forward,and the recommended range is given for the mix design of concrete with different strength grades.The requirements and detection methods for the anti-corrosion performance of manufactured sand anti-corrosion concrete in different application scenarios of expressway are put forward.Based on the project,the solid test beam control test is carried out to compare the structural strength and anti-corrosion performance of the beam,and the engineering feasibility of the established performance index system of machine-made sand anti-corrosion concrete is verified.

关 键 词：机制砂 防腐蚀 混凝土 桥梁 性能指标 

分 类 号：U444[建筑科学—桥梁与隧道工程]