| 细集料品质对C80高性能混凝土性能的影响 |
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| 引用本文： | 杨建军,殷素红,王恒昌,文梓芸,林永权,李伟中.细集料品质对C80高性能混凝土性能的影响[J].混凝土,2008(11). |
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| 作者姓名： | 杨建军 殷素红 王恒昌 文梓芸 林永权 李伟中 |
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| 作者单位： | 1. 华南理工大学,材料科学与工程学院,广东,广州,510640;华南理工大学,特种功能材料教育部重点实验室,广东,广州,510640
2. 广州越秀水泥集团有限公司,广东,广州,510160 |
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| 摘 要： | 河砂质量是影响混凝土质量比较大的一个因素.研究了不同细度模数、不同含泥量的河砂对广州珠江新城西塔工程C80高性能混凝土的工作性能、抗拉强度、收缩性能和氯离子渗透性的影响.结果表明:砂的细度模数从2.9下降至2.3,含泥量从1%增至4%,混凝土的工作性和强度明显下降,混凝土抵抗收缩和开裂的能力及抗氯离子渗透性能下降,但含泥量增加对混凝土早期收缩有明显抑制作用.建议用于广州珠江新城西塔工程的C80高性能混凝土,砂细度模数宜在2.6～2.9之间,含泥量不宜大于1.0%.
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| 关 键 词： | 砂细度模数 含泥量 C80高性能混凝土 工作性能 劈裂抗拉强度 早期收缩 |
Influence of sand quality on performance of C80 HPC |
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| YANG Jian-jun,YIN Su-hong,WANG Heng-chang,WEH Zi-yun,LIN Yong-quan,LI Wei-zhong.Influence of sand quality on performance of C80 HPC[J].Concrete,2008(11). |
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| Authors: | YANG Jian-jun YIN Su-hong WANG Heng-chang WEH Zi-yun LIN Yong-quan LI Wei-zhong |
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| Affiliation: | 1a.School of Material Science and Engineering;b.Key Laboratory of Specially Functional Materials of Ministry of Education;South China University of Technology;Guangzhou 510640;China;2.Guangzhou Yuexiu Cement Group;Guangzhou 510160;China |
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| Abstract: | The sand quality is a significant factor to influence the performance of concrete.The influence of fineness modulus and mud content of sand on performance of C80 HPC used in Zhujiang New City West Tower project of Guangzhou was studied.The results indicate that the fine- ness modulus declines from 2.9 to 2.3,and the mud content of sand increases from 1.0%to 4.0%,the workability and strength of concrete decrease obviously,and the resistance to shrinkage,cracking and chloride ion penetration is weaken,but the... |
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| Keywords: | fineness modulus mud content of sand C80 high performance concrete workability splitting tensile strength early shrinkage |
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