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。
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 admixture 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 reaches 57.3 MPa,and the 56-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.
作者
王昆
Wang Kun(KZJ New Materials Group Fujian Co.Ltd.,Zhangzhou,Fujian 363105)
出处
《江西建材》
2024年第8期68-70,91,共4页
关键词
福建地区
山砂
机制砂
混合使用
混凝土配制
Fujian area
Mountain sand
Mechanized sand
Mixed use
Concrete formulation
