| 高性能混凝土早龄期自干燥收缩与浆体相对密度、骨料平均浆体厚度的关系 |
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| 引用本文： | 许利惟,郑建岚. 高性能混凝土早龄期自干燥收缩与浆体相对密度、骨料平均浆体厚度的关系[J]. 混凝土, 2008, 0(2): 31-33 |
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| 作者姓名： | 许利惟 郑建岚 |
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| 作者单位： | 1. 福州大学,土木工程学院,福建,福州,350002;福建工程学院,土木系,福建,福州,350007
2. 福州大学,土木工程学院,福建,福州,350002 |
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| 基金项目： | 国家自然科学基金 , 福建省科技厅科研项目 , 福建省教育厅科研项目 |
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| 摘 要： | 采用非接触式位移传感器对不同配合比的高性能混凝土从初凝到14d内的自干燥收缩进行量测,研究浆体相对密度、骨料平均浆体厚度对其自干燥收缩的影响.结果表明,随着浆体相对密度和骨料平均浆体厚度的增大,混凝土自干燥收缩越大,自干燥收缩与浆体相对密度之间存在较好的线性相关性,与骨料平均浆体厚度之间存在较好的对数关系.
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| 关 键 词： | 自干燥收缩 浆体相对密度 骨料平均浆体厚度 水灰比 高性能混凝土 |
| 文章编号： | 1002-3550(2008)02-0031-04 |
| 修稿时间： | 2007-09-10 |
Relationship among self-desiccation shrinkage and relative density of pastes,average paste thickness of aggregate on high performance concrete at early age |
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| XU Li-wei,ZHENG Jian-lan. Relationship among self-desiccation shrinkage and relative density of pastes,average paste thickness of aggregate on high performance concrete at early age[J]. Concrete, 2008, 0(2): 31-33 |
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| Authors: | XU Li-wei ZHENG Jian-lan |
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| Abstract: | Self-desiccation shrinkage of high performance concrete with different mix proportions was measured from initial setting to 14 days with a type of non-touched micro-displacement sensor.The effects of relative density of pastes,average paste thickness of aggregate on self-desiccation shrinkage were studied.The results indicate that self-desiccation shrinkage increases with an increase in relative density of pastes and in average paste thickness of aggregate.There is significant linear correlation between self-desiccation shrinkage change and relative density of pastes;there is significant logarithm correlation between self-desiccation shrinkage change and average paste thickness of aggregate. |
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| Keywords: | self-desiccation shrinkage relative density of pastes average paste thickness of aggregate water-cement ratio high performance concrete |
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