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Anti-crack repair mortar and preparation method thereof
The invention discloses anti-crack repair mortar and a preparation method thereof. The anti-crack repair mortar comprises, by weight, 5-20% of low-carbon cement clinker, 5-20% of gypsum, 60-80% of blast furnace slag powder, and 0-3% of an additive, and further comprises quartz sand and drinking water, wherein the ratio of the quartz sand to the low-carbon cement clinker is 1-3, and the ratio of the drinking water to the low-carbon cement clinker is 0.25-0.5. Test results of the anti-crack repair mortar show that the anti-crack mortar has 3-hour breaking strength of more than 2.5 Mpa, 6-hour breaking strength of more than 3.0 Mpa, 1-day breaking strength of more than 4.0 MPa, 3-day breaking strength of more than 8.0 MPa, 7-day breaking strength of more than 10.0 MPa, 28-day breaking strength of more than 12.0 MPa and no negative shrinkage strain within 28 days, and has excellent anti-crack performance.
本发明公开了一种抗裂修补砂浆及其制备方法。该抗裂修补砂浆，按重量百分比包括以下原料：低碳水泥熟料5～20％；石膏5～20％；高炉矿渣粉60～80％；外加剂0～3％以及石英砂、饮用水；其中石英砂：低碳水泥熟料为1～3，饮用水：低碳水泥熟料为0.25～0.5。本发明抗裂修补砂浆测试结果表明，抗裂砂浆3h抗折强度超过2.5Mpa，6h抗折强度超过3.0Mpa，1d抗折强度超过4.0MPa，3d抗折强度超过8.0MPa，7d抗折强度超过10.0MPa，28d抗折强度超过12.0MPa，28d内不出现负收缩应变，具有优秀的抗开裂性能。
Anti-crack repair mortar and preparation method thereof
The invention discloses anti-crack repair mortar and a preparation method thereof. The anti-crack repair mortar comprises, by weight, 5-20% of low-carbon cement clinker, 5-20% of gypsum, 60-80% of blast furnace slag powder, and 0-3% of an additive, and further comprises quartz sand and drinking water, wherein the ratio of the quartz sand to the low-carbon cement clinker is 1-3, and the ratio of the drinking water to the low-carbon cement clinker is 0.25-0.5. Test results of the anti-crack repair mortar show that the anti-crack mortar has 3-hour breaking strength of more than 2.5 Mpa, 6-hour breaking strength of more than 3.0 Mpa, 1-day breaking strength of more than 4.0 MPa, 3-day breaking strength of more than 8.0 MPa, 7-day breaking strength of more than 10.0 MPa, 28-day breaking strength of more than 12.0 MPa and no negative shrinkage strain within 28 days, and has excellent anti-crack performance.
本发明公开了一种抗裂修补砂浆及其制备方法。该抗裂修补砂浆，按重量百分比包括以下原料：低碳水泥熟料5～20％；石膏5～20％；高炉矿渣粉60～80％；外加剂0～3％以及石英砂、饮用水；其中石英砂：低碳水泥熟料为1～3，饮用水：低碳水泥熟料为0.25～0.5。本发明抗裂修补砂浆测试结果表明，抗裂砂浆3h抗折强度超过2.5Mpa，6h抗折强度超过3.0Mpa，1d抗折强度超过4.0MPa，3d抗折强度超过8.0MPa，7d抗折强度超过10.0MPa，28d抗折强度超过12.0MPa，28d内不出现负收缩应变，具有优秀的抗开裂性能。
Anti-crack repair mortar and preparation method thereof
一种抗裂修补砂浆及其制备方法
JING DONGHAO (author) / LIU YANJUN (author) / LANG CHENFANG (author) / YU HUANZHOU (author) / WU JIANCHAO (author)
2021-01-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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