| 摘要: |
| 以快硬硫铝酸盐水泥为结合剂，与陶粒、预制泡沫混合制备得到陶粒泡沫混凝土.探讨了泡沫混凝土密度与陶粒粒径匹配关系对陶粒泡沫混凝土在静态单轴压缩下的破坏模式、抗压强度、压实应变和能量吸收的影响.结果表明：随着泡沫混凝土密度的提高或陶粒粒径的增大，陶粒泡沫混凝土发生非界面破坏的现象逐渐显著，由此确定出与3种粒径陶粒相匹配的泡沫混凝土的密度范围；随着泡沫混凝土密度的提高，陶粒泡沫混凝土的抗压强度和能量吸收能力均显著提高，压实应变随之减小；随着陶粒粒径的增大，陶粒泡沫混凝土的抗压强度先增后减，压实应变先减后增，能量吸收能力逐渐增强. |
| 关键词: 陶粒泡沫混凝土 强度匹配 破坏模式 抗压强度 压实应变 能量吸收 |
| DOI：103969/j.issn.1007 9629202101027 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（51808017，51778028）；北京市自然科学基金资助项目（8184063）；北京市教委科技计划项目（KM201810005019） |
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| Mechanical Properties and Energy Absorption Characteristics of Ceramsite Foam Concrete |
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WANG Xiaojuan, LIU Lu, JIA Kuncheng, ZHOU Hongyuan
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Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China
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| Abstract: |
| Ceramsite foam concrete was produced by mixing fast hardening sulphoaluminate cement with precast foam and ceramsite. The effects of foam concrete density and ceramsite particle size on the failure mode, compressive strength(peak stress), densification strain and energy absorption of ceramsite foam concrete subjected to static uniaxial compression was investigated. The experiment results indicate that remarkable non interfacial failure is observed with higher density of foam concrete and larger particle size of ceramsite, from which the density range of foam concrete with matched strength of the three corresponding ceramsite is determined. With increasing density of foam concrete, the compressive strength and energy absorption of ceramsite foam concrete are remarkably improved, while the densification strain decreases. In addition, with increasing ceramsite particle size, the densification strain decreases first then increases, the compressive strength increases first then decreases, and the energy absorption capacity gradually increases. |
| Key words: ceramsite foam concrete strength match failure mode compressive strength densification strain energy absorption |
