福建地区山砂与机制砂混合制备C45混凝土试验研究
Experimental Study on Mixing Sand Resources to Formulate C45 Concrete in Fujian Area
王昆1
作者信息
- 1. 科之杰新材料集团福建有限公司,福建 漳州 363105
- 折叠
摘要
文中对福建地区山砂与机制砂按照一定比例混合配制C45 混凝土进行试验研究,并通过调控外加剂掺量、砂率等方式探究其对混合砂混凝土的性能影响.研究表明,山砂与机制砂的混合比例为3∶7、外加剂掺量1.6%、砂率42%时,配制的C45 混凝土拌合物初始坍落度为220 mm,经时坍落度损失为5 mm,28 d抗压强度达到57.3 MPa,56 d电通量为659 C,显著提高了混凝土的工作性能、力学性能及耐久性能,满足福建地区混凝土技术要求.
Abstract
This project is an experimental study on the mixing of mountain sand and mechanized sand in Fujian region to formulate C45 concrete according to a certain proportion,and to investigate the effect on the performance of mixed sand concrete by regulating the admixture amount of admixtures,sand rate and other ways.The study shows that,when the mixing ratio of mountain sand and mechanism sand is 3∶7,the admix-ture amount is 1.6%,and the sand rate is 42%,the initial slump of the formulated C45 concrete mix is 220 mm,the slump loss is 5mm,the 28 d compressive strength reaches57.3 MPa,and the56-day electric flux is 659 C,which significantly improves the working performance,mechanical performance and durability of the concrete,and satisfies the technical requirements of the concrete in Fujian area.
关键词
福建地区/山砂/机制砂/混合使用/混凝土配制Key words
Fujian area/Mountain sand/Mechanized sand/Mixed use/Concrete formulation引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据