| Autogenous Shrinkage of High Strength Lightweight Aggregate Concrete |
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| 引用本文： | DING Qingjun TIAN Yaogang WANG Fazhou ZHANG Feng HU Shuguang. Autogenous Shrinkage of High Strength Lightweight Aggregate Concrete[J]. 武汉理工大学学报(材料科学英文版), 2005, 20(4): 123-125. DOI: 10.1007/BF02841302 |
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| 作者姓名： | DING Qingjun TIAN Yaogang WANG Fazhou ZHANG Feng HU Shuguang |
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| 作者单位： | School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China |
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| 基金项目： | Funded by the National Natural Science Foundation of China（No.50272045）and National“863”Project（No.2002AA335080） |
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| 摘 要： | The characteristic of autogenous shrinkage（AS） and its effect on high strength lightweight aggregate concrete（HSLAC） were studied.The experimental results show that the main shrinkage of high strength concrete is AS and the amount of cement can affect the AS of HSLAC remarkably,At the early stage the AS of HSLAC is lower than that of high strength normal concrete,but it has a large growth at the later stage.The AS of high strength normal concrete becomes stable at 90d age,but HSLAC still has a high AS growth .It is found that adjusting the volume rate of lightweight aggregate,mixing with a proper dosage of fly ash and raising the water saturation degree of lightweight aggregate can markedly reduce the AS rate of HSLAC.
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| 关 键 词： | 高强度轻骨料混凝土 自生收缩量 普通混凝土 性能 |
| 收稿时间： | 2005-02-24 |
| 修稿时间： | 2005-09-23 |
Autogenous shrinkage of high strength lightweight aggregate concrete |
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| Ding Qingjun Ph D,Tian Yaogang,Wang Fazhou,Zhang Feng,Hu Shuguang. Autogenous shrinkage of high strength lightweight aggregate concrete[J]. Journal of Wuhan University of Technology. Materials Science Edition, 2005, 20(4): 123-125. DOI: 10.1007/BF02841302 |
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| Authors: | Ding Qingjun Ph D Tian Yaogang Wang Fazhou Zhang Feng Hu Shuguang |
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| Affiliation: | (1) School of Materials Science and Engineering, Wuhan University of Technology, 430070 Wuhan, China |
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| Abstract: | The characteristic of autogenous shrinkage (AS) and its effect on high strength lightweight aggregate concrete (HSLAC) were studied. The experimental results show that the main shrinkage of high strength concrete is AS and the amount of cement can affect the AS of HSLAC remarkably. At the early stage the AS of HSLAC is lower than that of high strength normal concrete, but it has a large growth at the later stage. The AS of high strength normal concrete becomes stable at 90d age, but HSLAC still has a high AS growth. It is found that adjusting the volume rate of lightweight aggregate, mixing with a proper dosage of fly ash and raising the water saturation degree of lightweight aggregate can markedly reduce the AS rate of HSLAC. |
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| Keywords: | high strength lightweight aggregate concrete autogenous shrinkage lightweight aggregate volume rate |
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