Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Grouting material and preparation method thereof
The invention relates to a grouting material which comprises the following components in parts by weight: 92-95 parts of a gel material; 0.5 to 1.2 parts of a polycarboxylic acid type water reducing agent; 0.02 to 0.04 part of a defoaming agent; 0-0.03 part of an anti-settling water-retaining agent; 3-7 parts of a concrete expansive agent; and 0.02 to 0.04 part of a plastic expanding agent. The gel material comprises the following components in parts by weight: 75-93 parts of Portland cement; 0-5 parts of silica fume; 5 to 15 parts of superfine stone powder; 0-5 parts of granulated blast furnace slag powder; and 0-5 parts of fly ash. A preparation method of the superfine limestone powder comprises the following steps:1, limestone is taken and mixed with gypsum and a grinding aid, the mixture is ground till the specific surface area ranges from 1000 m < 2 >/kg to 1500 m < 2 >/kg, superfine limestone powder is obtained for standby application, the addition amount of the gypsum ranges from 0.3% to 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 ranges from 0.3% to 0.5%; and 2) the materials are taken according to the ratio, the materials are added into a mixing device,and the grouting material is obtained by uniformly mixing and homogenizing. The grouting material disclosed by the invention has good flowability, water-retaining property and cohesiveness, improves the compactness and filling degree of slurry, and reduces the shrinkage of the slurry in a plastic stage and the shrinkage of the hardened slurry.
本发明涉及一种灌浆料，包括如下重量份组分：胶凝材料92‑95份；聚羧酸系减水剂0.5‑1.2份；消泡剂0.02‑0.04份；防沉保水剂0‑0.03份；混凝土膨胀剂3‑7份；塑性膨胀剂0.02‑0.04；所述凝胶材料包括如下重量份组分：硅酸盐水泥75‑93份；硅灰0‑5份；超细石粉5‑15份；粒化高炉矿渣粉0‑5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，经磨粉至比表面积为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)按配比取料，加入到混料设备中混合均匀，经均化处理后得到灌浆料。本发明灌浆料，具有良好的流动性、保水性、粘聚性，并提高浆体的密实性、充盈度，减小浆体在塑性阶段的收缩和浆体硬化后的收缩。
Grouting material and preparation method thereof
The invention relates to a grouting material which comprises the following components in parts by weight: 92-95 parts of a gel material; 0.5 to 1.2 parts of a polycarboxylic acid type water reducing agent; 0.02 to 0.04 part of a defoaming agent; 0-0.03 part of an anti-settling water-retaining agent; 3-7 parts of a concrete expansive agent; and 0.02 to 0.04 part of a plastic expanding agent. The gel material comprises the following components in parts by weight: 75-93 parts of Portland cement; 0-5 parts of silica fume; 5 to 15 parts of superfine stone powder; 0-5 parts of granulated blast furnace slag powder; and 0-5 parts of fly ash. A preparation method of the superfine limestone powder comprises the following steps:1, limestone is taken and mixed with gypsum and a grinding aid, the mixture is ground till the specific surface area ranges from 1000 m < 2 >/kg to 1500 m < 2 >/kg, superfine limestone powder is obtained for standby application, the addition amount of the gypsum ranges from 0.3% to 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 ranges from 0.3% to 0.5%; and 2) the materials are taken according to the ratio, the materials are added into a mixing device,and the grouting material is obtained by uniformly mixing and homogenizing. The grouting material disclosed by the invention has good flowability, water-retaining property and cohesiveness, improves the compactness and filling degree of slurry, and reduces the shrinkage of the slurry in a plastic stage and the shrinkage of the hardened slurry.
本发明涉及一种灌浆料，包括如下重量份组分：胶凝材料92‑95份；聚羧酸系减水剂0.5‑1.2份；消泡剂0.02‑0.04份；防沉保水剂0‑0.03份；混凝土膨胀剂3‑7份；塑性膨胀剂0.02‑0.04；所述凝胶材料包括如下重量份组分：硅酸盐水泥75‑93份；硅灰0‑5份；超细石粉5‑15份；粒化高炉矿渣粉0‑5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，经磨粉至比表面积为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)按配比取料，加入到混料设备中混合均匀，经均化处理后得到灌浆料。本发明灌浆料，具有良好的流动性、保水性、粘聚性，并提高浆体的密实性、充盈度，减小浆体在塑性阶段的收缩和浆体硬化后的收缩。
Grouting material and preparation method thereof
一种灌浆料及其制备方法
YAO BIN (Autor:in) / PAN CHENGGONG (Autor:in) / YI SHUCHENG (Autor:in) / HU TINGTING (Autor:in) / LI XIAOLIN (Autor:in)
03.12.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME