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Low-temperature sleeve grouting material for steel bar connection
The invention discloses a low-temperature sleeve grouting material for steel bar connection. The concrete is prepared from the following components in parts by weight: 700 to 900 parts of silicate 525 cement, 100 to 300 parts of high-aluminum 725 cement, 50 to 100 parts of anhydrite, 25 to 50 parts of silica fume, 200 to 500 parts of coarse sand, 200 to 400 parts of medium sand, 200 to 400 parts of fine sand, 100 to 300 parts of superfine sand, 1 to 3 parts of a water reducing agent, 0.1 to 0.5 part of a rheological stabilizer, 0.3 to 1.6 parts of a defoaming agent, 0.1 to 0.5 part of a plastic expanding agent, 0.5 to 1.5 parts of a retarder, 0.5 to 1.5 parts of an early strength agent, 0.5 to 2 parts of an anti-freezing agent and 200 to 280 parts of water. The sleeve grouting material disclosed by the invention is good in initial and half-hour construction performance during prefabricated winter construction, early plastic cracking and later shrinkage cracking are avoided on the basis of reaching the strength and the construction performance, and the construction requirements of grouting connection of components are met.
本发明公开了一种钢筋连接用低温型套筒灌浆材料，按重量份数计包括硅酸盐525水泥700–900份、高铝725水泥100–300份、无水石膏50–100份、硅灰25–50份、粗砂200–500份、中砂200–400份、细砂200–400份、超细砂100–300份、减水剂1–3份、流变稳定剂0.1–0.5份、消泡剂0.3–1.6份、塑性膨胀剂0.1–0.5份、缓凝剂0.5–1.5份、早强剂0.5–1.5份、防冻剂0.5–2份和水200–280份。本发明的套筒灌浆材料装配式冬季施工时初始及半小时施工性能良好，达到强度和施工性能的基础上不出现早期塑性开裂和后期收缩开裂，满足构件灌浆连接施工要求。
Low-temperature sleeve grouting material for steel bar connection
The invention discloses a low-temperature sleeve grouting material for steel bar connection. The concrete is prepared from the following components in parts by weight: 700 to 900 parts of silicate 525 cement, 100 to 300 parts of high-aluminum 725 cement, 50 to 100 parts of anhydrite, 25 to 50 parts of silica fume, 200 to 500 parts of coarse sand, 200 to 400 parts of medium sand, 200 to 400 parts of fine sand, 100 to 300 parts of superfine sand, 1 to 3 parts of a water reducing agent, 0.1 to 0.5 part of a rheological stabilizer, 0.3 to 1.6 parts of a defoaming agent, 0.1 to 0.5 part of a plastic expanding agent, 0.5 to 1.5 parts of a retarder, 0.5 to 1.5 parts of an early strength agent, 0.5 to 2 parts of an anti-freezing agent and 200 to 280 parts of water. The sleeve grouting material disclosed by the invention is good in initial and half-hour construction performance during prefabricated winter construction, early plastic cracking and later shrinkage cracking are avoided on the basis of reaching the strength and the construction performance, and the construction requirements of grouting connection of components are met.
本发明公开了一种钢筋连接用低温型套筒灌浆材料，按重量份数计包括硅酸盐525水泥700–900份、高铝725水泥100–300份、无水石膏50–100份、硅灰25–50份、粗砂200–500份、中砂200–400份、细砂200–400份、超细砂100–300份、减水剂1–3份、流变稳定剂0.1–0.5份、消泡剂0.3–1.6份、塑性膨胀剂0.1–0.5份、缓凝剂0.5–1.5份、早强剂0.5–1.5份、防冻剂0.5–2份和水200–280份。本发明的套筒灌浆材料装配式冬季施工时初始及半小时施工性能良好，达到强度和施工性能的基础上不出现早期塑性开裂和后期收缩开裂，满足构件灌浆连接施工要求。
Low-temperature sleeve grouting material for steel bar connection
一种钢筋连接用低温型套筒灌浆材料
WANG ZHEN (author) / LIU XIAO (author) / SHENG CHANGBO (author) / MA BINGYANG (author) / LIU YANG (author)
2022-03-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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