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Method for recycling waste freshly mixed cement paste as mineral admixture
A method for recycling waste newly-mixed cement paste as a mineral admixture comprises the following steps: collecting the waste newly-mixed cement paste, then injecting CO2-containing gas into the collected waste newly-mixed cement paste, carbonizing the waste newly-mixed cement paste, and collecting the carbonized waste newly-mixed cement paste; the collected carbonized waste newly-mixed cement paste is used as a mineral admixture to replace part of cement, water contained in the carbonized waste newly-mixed cement paste is used as part of mixing water, and in the using process of the carbonized waste newly-mixed cement paste as the mineral admixture, the water-cement ratio of the prepared cement-based material is adjusted according to the target water-cement ratio of the prepared cement-based material. And adding additional water as mixing water. Compared with the prior art, the carbonized waste newly-mixed cement paste keeps high dispersity and fluidity and can be used as a mineral admixture to partially replace cement, the waste newly-mixed cement paste and CO2 are effectively recycled and utilized, and the raw material cost, energy consumption and carbon emission in the cement-based material preparation process are reduced.
一种废弃新拌水泥浆回收用作矿物掺合料的方法，包括如下步骤：收集废弃新拌水泥浆，随后，将含CO2的气体注入收集到的废弃新拌水泥浆中，对废弃新拌水泥浆进行碳化处理，收集碳化后的废弃新拌水泥浆；收集的碳化废弃新拌水泥浆作为矿物掺合料用于取代部分水泥，碳化废弃新拌水泥浆中含有的水作为拌合水的一部分使用，在碳化废弃新拌水泥浆作为矿物掺合料的使用过程中，根据制备的水泥基材料的目标水灰比，添加额外的水作为拌合水。本发明碳化后的废弃新拌水泥浆保持了很高的分散性和流动性，并可作为矿物掺合料部分替代水泥，有效的回收和利用了废弃新拌水泥浆及CO2，降低了水泥基材料制备过程中的原料成本、能源消耗、以及碳排放。
Method for recycling waste freshly mixed cement paste as mineral admixture
A method for recycling waste newly-mixed cement paste as a mineral admixture comprises the following steps: collecting the waste newly-mixed cement paste, then injecting CO2-containing gas into the collected waste newly-mixed cement paste, carbonizing the waste newly-mixed cement paste, and collecting the carbonized waste newly-mixed cement paste; the collected carbonized waste newly-mixed cement paste is used as a mineral admixture to replace part of cement, water contained in the carbonized waste newly-mixed cement paste is used as part of mixing water, and in the using process of the carbonized waste newly-mixed cement paste as the mineral admixture, the water-cement ratio of the prepared cement-based material is adjusted according to the target water-cement ratio of the prepared cement-based material. And adding additional water as mixing water. Compared with the prior art, the carbonized waste newly-mixed cement paste keeps high dispersity and fluidity and can be used as a mineral admixture to partially replace cement, the waste newly-mixed cement paste and CO2 are effectively recycled and utilized, and the raw material cost, energy consumption and carbon emission in the cement-based material preparation process are reduced.
一种废弃新拌水泥浆回收用作矿物掺合料的方法，包括如下步骤：收集废弃新拌水泥浆，随后，将含CO2的气体注入收集到的废弃新拌水泥浆中，对废弃新拌水泥浆进行碳化处理，收集碳化后的废弃新拌水泥浆；收集的碳化废弃新拌水泥浆作为矿物掺合料用于取代部分水泥，碳化废弃新拌水泥浆中含有的水作为拌合水的一部分使用，在碳化废弃新拌水泥浆作为矿物掺合料的使用过程中，根据制备的水泥基材料的目标水灰比，添加额外的水作为拌合水。本发明碳化后的废弃新拌水泥浆保持了很高的分散性和流动性，并可作为矿物掺合料部分替代水泥，有效的回收和利用了废弃新拌水泥浆及CO2，降低了水泥基材料制备过程中的原料成本、能源消耗、以及碳排放。
Method for recycling waste freshly mixed cement paste as mineral admixture
一种废弃新拌水泥浆回收用作矿物掺合料的方法
SHI CAIJUN (author) / MAO YUGUANG (author) / HU XIANG (author)
2024-02-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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