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A platform for research: civil engineering, architecture and urbanism
Cement retarder and preparation method thereof
The invention discloses a cement retarder and a preparation method thereof. The cement retarder is prepared from the following raw materials in parts by weight: 30-40 parts of water-soluble celluloseor hemicellulose with the mass fraction of 25%-45%, 10-20 parts of phosphogypsum, 6-10 parts of lime, 1-3 parts of water glass, 2-4 parts of anhydrous sodium sulfate, 1.5-2.5 parts of industrial solidwaste with a grinding aid effect and 2-4 parts of water. According to the cement retarder and the preparation method thereof disclosed by the invention, agricultural cellulose wastes such as corn straws, wheat straws and corn cobs are used as main raw materials, and a low-molecular-weight degradation product has structural consistency with an existing glucose type cement retarder, so that the degradation product also has a cement retarding effect; by adding the industrial solid waste fly ash with a grinding aid effect, the cement grinding aid effect and strength are improved; and the preparation process is simple, waste is turned into wealth, energy conservation and environmental protection are achieved, and the cement retarder is economical, applicable and low in cost and belongs to an environmental protection technology benefiting the nation and the people.
本发明公开了一种水泥缓凝剂及其制备方法，由包括以下重量份的原料制备而成：含有质量分数25％～45％的水溶性纤维素或半纤维素30～40份、磷石膏10～20份、石灰6～10份、水玻璃1～3份、无水硫酸钠2～4份、具有助磨作用的工业固体废物1.5～2.5份，水2～4份。本发明所述的一种水泥缓凝剂及其制备方法，通过采用玉米秸秆、小麦秸秆、玉米棒芯等农业纤维素废弃物为主要原料，通过低分子量降解产物与现有的葡萄糖类型水泥缓凝剂具有结构一致性，实现其降解产物也具有水泥缓凝效能，通过加入具有助磨作用的工业固体废物粉煤灰，提高水泥助磨作用和强度，制备工艺简单、变废为宝，节能环保，并且经济适用，成本低廉，属于一种利国利民的环保技术。
Cement retarder and preparation method thereof
The invention discloses a cement retarder and a preparation method thereof. The cement retarder is prepared from the following raw materials in parts by weight: 30-40 parts of water-soluble celluloseor hemicellulose with the mass fraction of 25%-45%, 10-20 parts of phosphogypsum, 6-10 parts of lime, 1-3 parts of water glass, 2-4 parts of anhydrous sodium sulfate, 1.5-2.5 parts of industrial solidwaste with a grinding aid effect and 2-4 parts of water. According to the cement retarder and the preparation method thereof disclosed by the invention, agricultural cellulose wastes such as corn straws, wheat straws and corn cobs are used as main raw materials, and a low-molecular-weight degradation product has structural consistency with an existing glucose type cement retarder, so that the degradation product also has a cement retarding effect; by adding the industrial solid waste fly ash with a grinding aid effect, the cement grinding aid effect and strength are improved; and the preparation process is simple, waste is turned into wealth, energy conservation and environmental protection are achieved, and the cement retarder is economical, applicable and low in cost and belongs to an environmental protection technology benefiting the nation and the people.
本发明公开了一种水泥缓凝剂及其制备方法，由包括以下重量份的原料制备而成：含有质量分数25％～45％的水溶性纤维素或半纤维素30～40份、磷石膏10～20份、石灰6～10份、水玻璃1～3份、无水硫酸钠2～4份、具有助磨作用的工业固体废物1.5～2.5份，水2～4份。本发明所述的一种水泥缓凝剂及其制备方法，通过采用玉米秸秆、小麦秸秆、玉米棒芯等农业纤维素废弃物为主要原料，通过低分子量降解产物与现有的葡萄糖类型水泥缓凝剂具有结构一致性，实现其降解产物也具有水泥缓凝效能，通过加入具有助磨作用的工业固体废物粉煤灰，提高水泥助磨作用和强度，制备工艺简单、变废为宝，节能环保，并且经济适用，成本低廉，属于一种利国利民的环保技术。
Cement retarder and preparation method thereof
一种水泥缓凝剂及其制备方法
YU JIANGSHAN (author) / LI GUODONG (author) / YU YUEHAI (author) / YU QING (author)
2021-02-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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