中文摘要：

矿物质碳酸饱和使用浪费水泥是一个有希望的方法解决公司 ₂ 排放和浪费水泥引起的问题。压缩压力是为氢氧化钙的矿物质碳酸饱和的一个重要参数，之一最主导能被焦化的浪费水泥合成。碳酸饱和度，产品的形态学和焦化协议的压缩力量被压缩压力显著地影响。氢氧化钙的碳酸饱和度起初增加的结果表演(0-8 MPa ) 然后在更高的压缩压力范围(10-14 MPa ) 的减少。在同时，结果也显示更低的压缩压力加速早碳酸饱和，但是在以后的阶段妨碍碳酸饱和。为碳酸饱和产品的形态学，钙碳酸盐趋于形成方解石的典型水晶形态学(菱形) 在更低的压缩压力下面，当它将变得像椭圆体时当压缩压力到达 8 MPa 时。TGA 和水内容结果证明为碳酸饱和有一个最佳的水内容。另外，更低的水内容对在以后的舞台的碳酸饱和不利，当水内容高时，公司 ₂ 是困难的渗透进协议的里面，它将妨碍碳酸饱和。XRD 和 TGA 结果证明碳酸饱和产品是方解石和非结晶的钙碳酸盐的小数量。

英文摘要：

Mineral carbonation using waste cement is a promising method to solve the problems caused by CO_2 emission and waste cement. Compaction pressure is an important parameter for mineral carbonation of calcium hydroxide, one of the most dominant composite of waste cement that can be carbonated. The carbonation degree, morphology of products and compressive strength of carbonated compacts are influenced by compaction pressure significantly. Results show that the carbonation degree of calcium hydroxide increases at first（0-8 MPa） and then decreases in the higher compaction pressure range（10-14 MPa）. At the meantime, results also indicate that lower compaction pressure accelerates the early carbonation but hinder carbonation in the later stages. For the morphologies of carbonation products, calcium carbonate tends to form typical crystal morphology of calcite（rhombohedral） under lower compaction pressure, while it will become ellipsoidlike when compaction pressure reaches 8 MPa. TGA and water content results show that there is an optimal water content for the carbonation. In addition, lower water content is adverse to the carbonation at later stage and the CO_2 is difficult to penetrate into the inside of compacts when water content is high, which will hinder the carbonation. XRD and TGA results show that the carbonation products are calcite and small amount of amorphous calcium carbonate.