摘要
结合广西山区高速建设的特点,提出一种机制砂数控环保生产工艺,利用石灰岩隧道洞碴加工出粒形圆润且级配优良的高品质机制砂。通过机制砂与回收石粉结合设计出公路不同用途的系列高性能混凝土,中低强度机制砂混凝土的最优石粉含量为10%～15%,中高强度混凝土中则为6%～8%。机制砂高性能混凝土在全路段不同混凝土工程中成功应用,实现了污染物的废水和粉尘的零排放,不仅有效提高了机制砂混凝土的工作性能和强度保证率,也提升了混凝土外观质量,取得了良好的技术经济效益和生态环境效益。
According to the characteristics of highway construction in mountainous areas of Guangxi,this paper put forward a kind of numerical control and environmental protection production process of mechanized sand,using limestone tunnel waste stone to produce fine and high-quality manufactured sand with good grain shape and particle graduation.Through the combination of manufactured sand and recycling stone powder,a series of high performance concrete with different usages for highway engineering is designed,and the optimum stone powder content of medium-low and medium-high strength mechanism sand concrete are 10%~15%and 6%~8%respectively.The successful application of the high-performance mechanism sand concrete in various concrete projects of the whole super highway section not only realized the zero emission of waste water and dust,but also significantly improved the workability performance,strength assurance ratio and performance quality of manufactured sand concrete,consequently good technical,economic and ecological benefits were obtained.
作者
孙江涛
李志堂
高红军
谭博盛
文来胜
王元扩
沈卫国
SUN Jiangtao;LI Zhitang;GAO Hongjun;TAN Bosheng;WEN Laisheng;WANG Yuankuo;SHEN Weiguo(Guangdong Provincial Changda Highway Engineering Co.,Ltd.,Guangzhou 510620,China;State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China)
出处
《混凝土》
CAS
北大核心
2018年第9期93-96,共4页
Concrete
基金
广东省交通运输厅科技项目(2016-02-007
2012-03-006)
2016年湖北交通科技项目
关键词
数控环保工艺
机制砂
隧道洞碴
高性能混凝土
石粉
numerical control cleaner production
manufactured sand
tunnel waste stone
high performance concrete
stone powder
作者简介
第一作者:孙江涛(1979-),男,高级工程师。联系地址:湖北省武汉市洪山区珞狮路122号武汉理工大学材料科学与工程学院(430070),联系电话:027-87395822;通讯作者:沈卫国(1971-),男,研究员,博士。联系电话:13317125539。
