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A platform for research: civil engineering, architecture and urbanism
Coal gangue-containing foundation pit backfill material and preparation method thereof
The invention provides a coal gangue-containing foundation pit backfill material and a preparation method thereof, and the coal gangue-containing foundation pit backfill material comprises the following components in parts by weight: 300-350 parts of coal gangue, 110-130 parts of cement, 60-80 parts of medium sand, 35-50 parts of water, 20-30 parts of fly ash and 10-15 parts of silica fume. The preparation method comprises the following steps: (1) adding water to dissolve the fly ash and the silica fume; (2) adding cement; (3) mixing the coal gangue and the medium sand, weighing half of the mixture, and adding; (4) adding residual coal gangue and medium sand; (5) forming and maintaining. The problem that existing waste coal gangue occupies a large amount of land is solved. The manufacturing process is simple, green and environment-friendly, and the cost is low.
本发明提供了一种含煤矸石的基坑回填材料及其制备方法，按重量份数计，包括以下组分：煤矸石300‑350份，水泥110‑130份，中砂60‑80份，水35‑50份，粉煤灰20‑30份，硅灰10‑15份。其制备方法包括：(1)将粉煤灰和硅灰加水溶解；(2)加入水泥；(3)煤矸石和中砂混合后称取一半加入；(4)加入剩余煤矸石和中砂；(5)成型养护。本发明解决了现有废弃煤矸石占用大量土地的问题。本发明制作工艺简单，绿色环保，且成本低廉。
Coal gangue-containing foundation pit backfill material and preparation method thereof
The invention provides a coal gangue-containing foundation pit backfill material and a preparation method thereof, and the coal gangue-containing foundation pit backfill material comprises the following components in parts by weight: 300-350 parts of coal gangue, 110-130 parts of cement, 60-80 parts of medium sand, 35-50 parts of water, 20-30 parts of fly ash and 10-15 parts of silica fume. The preparation method comprises the following steps: (1) adding water to dissolve the fly ash and the silica fume; (2) adding cement; (3) mixing the coal gangue and the medium sand, weighing half of the mixture, and adding; (4) adding residual coal gangue and medium sand; (5) forming and maintaining. The problem that existing waste coal gangue occupies a large amount of land is solved. The manufacturing process is simple, green and environment-friendly, and the cost is low.
本发明提供了一种含煤矸石的基坑回填材料及其制备方法，按重量份数计，包括以下组分：煤矸石300‑350份，水泥110‑130份，中砂60‑80份，水35‑50份，粉煤灰20‑30份，硅灰10‑15份。其制备方法包括：(1)将粉煤灰和硅灰加水溶解；(2)加入水泥；(3)煤矸石和中砂混合后称取一半加入；(4)加入剩余煤矸石和中砂；(5)成型养护。本发明解决了现有废弃煤矸石占用大量土地的问题。本发明制作工艺简单，绿色环保，且成本低廉。
Coal gangue-containing foundation pit backfill material and preparation method thereof
含煤矸石的基坑回填材料及其制备方法
CAI XINYUAN (author) / LIU XIANGRONG (author)
2021-03-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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