[1]龙 行,杨清源.高石粉含量凝灰岩机制砂混凝土配制技术及性能研究[J].高速铁路技术,2023,14(02):59-63,80.[doi:10.12098/j.issn.1674-8247.2023.02.012]
 LONG Xing,YANG Qingyuan.A Study on Preparation Technology and Performance of Machine-made Tuff Sand Concrete with High Stone Powder Content[J].HIGH SPEED RAILWAY TECHNOLOGY,2023,14(02):59-63,80.[doi:10.12098/j.issn.1674-8247.2023.02.012]
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高石粉含量凝灰岩机制砂混凝土配制技术及性能研究()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
14卷
期数:
2023年02期
页码:
59-63,80
栏目:
出版日期:
2023-04-30

文章信息/Info

Title:
A Study on Preparation Technology and Performance of Machine-made Tuff Sand Concrete with High Stone Powder Content
文章编号:
1674-8247(2023)02-0059-05
作者:
龙 行杨清源
中国路桥工程有限责任公司,北京10013
Author(s):
LONG XingYANG Qingyuan
China Road & Bridge Corporation ,Beijing 100013 ,China
关键词:
高石粉含量机制砂 混凝土配制技术 混凝土性能
Keywords:
machine-made sand with high stone powder contentconcrete preparation technologyconcrete performance
分类号:
U451+.2
DOI:
10.12098/j.issn.1674-8247.2023.02.012
文献标志码:
A
摘要:
随着天然砂石的紧缺,机制砂成为我国建设用砂的主要来源。针对机制砂中石粉含量过高的问题,本文对石粉含量高达15%的凝灰岩机制砂进行了混凝土配合比优化研究,分析了凝灰岩机制砂与天然砂制备的混凝土的施工性能、力学性能和耐久性能,结果表明:在水泥用量更少的情况下,石粉含量为15%的凝灰岩机制砂混凝土的抗压强度、弹性模量和抗氯离子渗透性能优于天然砂混凝土,抗碳化性能与天然砂混凝土相当。
Abstract:
With the shortage of natural sand and gravel,machine-made sand has become the main source of sand for construction in China. In view of the high content of stone powder in machine-made sand,this paper studied the concrete mix ratio optimization of machine-made tuff sand with stone powder content up to 15%,and analyzed the workability,mechanical behavior,and durability of concrete made of machine-made tuff sand and natural sand. The results show that with less cement,the compressive strength,elastic modulus,and chloride ion permeability resistance of machine-made tuff sand concrete with 15% stone powder are better than those of natural sand concrete,and the carbonation resistance is equivalent to that of natural sand concrete.

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备注/Memo

备注/Memo:
收稿日期:2022-02-22
作者简介:龙行(1990-),男,工程师。
更新日期/Last Update: 2023-04-30