A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Grouting agent and preparation method thereof
A grouting agent comprises, by weight, 2 to 4 parts of a polycarboxylic acid water reducer; 0.2 to 0.4 part of a defoaming agent; 0.1 to 0.3 part of an anti-settling water-retaining agent; 30-40 parts of a concrete expansive agent; 0.3 to 0.5 part of a plastic expanding agent; 40 to 60 parts of silica fume; 5 to 20 parts of ultrafine stone powder; and 0 to 5 parts of fly ash. A preparation method of the grouting agent comprises the following steps: 1, taking limestone, mixing with gypsum and a grinding aid, grinding till the specific surface area ranges is 1000-1500 m<2>/kg to obtain superfine limestone powder for later use, wherein the addition amount of the gypsum is 0.3-0.5%, the grinding aid is a mixture of calcium lignosulphonate and silica fume, the mass ratio of the calcium lignosulphonate to the silica fume is 3: 47, and the addition amount of the grinding aid is 0.3-0.5%; and 2) proportioning and taking the materials, adding the materials into mixing equipment, uniformly mixing, and homogenizing to obtain the grouting agent. The grouting agent provided by the invention is used for preparing grouting materials, and can effectively solve the common problems of poor fluidity, large fluidity loss, poor water-retaining property, easy water bleeding and layering, large system shrinkage, low breaking strength and the like existing in concrete post-tensioning grouting engineering.
一种压浆剂，包括如下重量份组分：聚羧酸系减水剂2‑4份；消泡剂0.2‑0.4份；防沉保水剂0.1‑0.3份；混凝土膨胀剂30‑40份；塑性膨胀剂0.3‑0.5份；硅灰40‑60份；超细石粉5‑20份；粉煤灰0‑5份，采用以下方法制备：1)取石灰石，与石膏、助磨剂混合，经粉磨至比表面积为1000‑1500m2/kg，得到超细石粉，备用，其中，石膏的添加量为0.3％‑0.5％，助磨剂为木质素磺酸钙与硅灰的混合物，木质素磺酸钙和硅灰的质量比为3：47，助磨剂的添加量为0.3％‑0.5％；2)配比取料，加入到混料设备中混合均匀，经均化处理后得到压浆剂。本发明压浆剂用于制备压浆料，可有效解决混凝土后张法压浆工程普遍存在的流动性不好、流动度损失大、保水性差、易泌水分层、体系收缩较大、抗折强度低等等额问题。
Grouting agent and preparation method thereof
A grouting agent comprises, by weight, 2 to 4 parts of a polycarboxylic acid water reducer; 0.2 to 0.4 part of a defoaming agent; 0.1 to 0.3 part of an anti-settling water-retaining agent; 30-40 parts of a concrete expansive agent; 0.3 to 0.5 part of a plastic expanding agent; 40 to 60 parts of silica fume; 5 to 20 parts of ultrafine stone powder; and 0 to 5 parts of fly ash. A preparation method of the grouting agent comprises the following steps: 1, taking limestone, mixing with gypsum and a grinding aid, grinding till the specific surface area ranges is 1000-1500 m<2>/kg to obtain superfine limestone powder for later use, wherein the addition amount of the gypsum is 0.3-0.5%, the grinding aid is a mixture of calcium lignosulphonate and silica fume, the mass ratio of the calcium lignosulphonate to the silica fume is 3: 47, and the addition amount of the grinding aid is 0.3-0.5%; and 2) proportioning and taking the materials, adding the materials into mixing equipment, uniformly mixing, and homogenizing to obtain the grouting agent. The grouting agent provided by the invention is used for preparing grouting materials, and can effectively solve the common problems of poor fluidity, large fluidity loss, poor water-retaining property, easy water bleeding and layering, large system shrinkage, low breaking strength and the like existing in concrete post-tensioning grouting engineering.
一种压浆剂，包括如下重量份组分：聚羧酸系减水剂2‑4份；消泡剂0.2‑0.4份；防沉保水剂0.1‑0.3份；混凝土膨胀剂30‑40份；塑性膨胀剂0.3‑0.5份；硅灰40‑60份；超细石粉5‑20份；粉煤灰0‑5份，采用以下方法制备：1)取石灰石，与石膏、助磨剂混合，经粉磨至比表面积为1000‑1500m2/kg，得到超细石粉，备用，其中，石膏的添加量为0.3％‑0.5％，助磨剂为木质素磺酸钙与硅灰的混合物，木质素磺酸钙和硅灰的质量比为3：47，助磨剂的添加量为0.3％‑0.5％；2)配比取料，加入到混料设备中混合均匀，经均化处理后得到压浆剂。本发明压浆剂用于制备压浆料，可有效解决混凝土后张法压浆工程普遍存在的流动性不好、流动度损失大、保水性差、易泌水分层、体系收缩较大、抗折强度低等等额问题。
Grouting agent and preparation method thereof
一种压浆剂及其制备方法
YAO BIN (author) / PAN CHENGGONG (author) / YI SHUCHENG (author) / LIU YANG (author) / LI XIAOLIN (author)
2021-12-17
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Mining full-length bolting-grouting agent and preparation method thereof
| European Patent Office | 2022
Grouting agent with ultralow water-binder ratio and preparation method thereof
| European Patent Office | 2023