| 摘要: |
| 为实现中国可持续发展，解决既可使用丰富石灰石资源制造建筑材料、又不使石灰石高温分解排放CO2的矛盾，模拟了地底堆积岩的形成过程，在水热条件下将石灰石粉末与废玻璃混合，在低温（≤200℃）下固化成具有高强度的建筑材料，由于低温下石灰石不分解从而实现了CO2零排放.研究表明：无机添加剂的含量、固化时间以及固化温度均会影响产品强度，生成的硅酸钙水合物（C S H）和托勃莫来石被证明是产品强度增加的主要原因. |
| 关键词: 石灰石 硅酸钙水合物 水热固化 CO2准零排放 建筑材料 |
| DOI：103969/j.issn.1007 9629201802011 |
| 分类号: |
| 基金项目: |
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| Wet Preparation and Hardening Mechanism of Calcium CarbonateBased Building Materials |
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QIU Pengcheng, JING Zhenzi, LIU Zixi, QI Yujie, MIAO Jiajun
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School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
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| Abstract: |
| To step up urbanization construction and to reduce CO2 emissions, waste glass and limestone had been solidified into construction materials with flexural strength more than 25MPa under hydrothermal conditions by simulating diagenetic mechanism of underground. The experimental temperature was under 200℃, so the products can achieve CO2 zero emission. The content of inorganic additives, curing time and temperature will affect the strength of products, and the experimental results show that the development in strength is mainly due to the formation of tobermorite and calcium silicate hydrate(C S H) . |
| Key words: limestone calcium silicate hydrate hydrothermal curing CO2 zero emission building material |
