红水河2025，Vol.44Issue(3)：25-31,7.DOI:10.3969/j.issn.1001-408X.2025.03.005
石粉含量调控下白云岩机制砂水工混凝土流变与力学性能的响应机制及优化
Response Mechanisms and Optimization of Rheological and Mechanical Properties of Dolomite Manufactured Sand Hydraulic Concrete under Stone Powder Content Regulation
刘雨冰 1胡晓军 2李建华 3龙俚志 1李旭东 3李松1
作者信息
- 1. 中国电建集团贵阳勘测设计研究院有限公司,贵州 贵阳 550081
- 2. 中国水利水电第七工程局有限公司试验检测分公司研究院,四川 成都 611730
- 3. 西藏大唐扎拉水电开发有限公司,西藏 昌都 854000
- 折叠
摘要
Abstract
To investigate the influence of stone powder content in manufactured sand on concrete performance,this study systematically analyzed the effects of stone powder content on the workability and mechanical properties of concrete using dolomite-derived manufactured sand.By fixing the fineness modulus of manufactured sand at 2.60 and setting 13 stone powder content levels(0％-28％),key indicators including slump,air content,and compressive strength were tested.Results show that stone powder content significantly affects concrete properties with phased variation characteristics.At 10％stone powder content,both concrete mix performance(slump,air content)and mechanical properties(compressive strength)reach peak values.Excessively high or low stone powder content reduces concrete performance.Based on comprehensive analysis,it is recommended to control the sieved stone powder content of dolomite artificial sand between 10％and 16％to enhance concrete workability and durability.This study provides theoretical and practical guidance for optimizing stone powder content in artificial sand for engineering applications.关键词
石粉含量/水工混凝土/机制砂/抗压强度/流变性/级配优化Key words
stone powder content/hydraulic concrete/manufactured sand/compressive strength/rheology/gradation optimization分类
建筑与水利引用本文复制引用
刘雨冰,胡晓军,李建华,龙俚志,李旭东,李松..石粉含量调控下白云岩机制砂水工混凝土流变与力学性能的响应机制及优化[J].红水河,2025,44(3):25-31,7.
