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 discloses a grouting material which comprises the following components in parts by weight: 94.6-96.7 parts of a cementing material; 0.2 to 0.4 part of a polycarboxylic acid type water reducing agent; 0.02 to 0.04 part of a defoaming agent; 0.01 to 0.03 part of an anti-settling water-retaining agent; 3-5 parts of a concrete expansive agent; 0.03 to 0.05 part of a plastic expanding agent; the cementing material comprises the following components: 82-90 parts of Portland cement; 5-10 parts of silica fume; 1-5 parts of superfine stone powder; and 0-3 parts of fly ash. A preparation method comprises the following steps: (1) mixing limestone with gypsum and a grinding aid, and grinding until the specific surface area is 1000-1500m < 2 >/kg to obtain superfine stone powder, 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) taking the materials in proportion, adding the materials into mixing equipment, uniformly mixing, and homogenizing to obtain the grouting material. The grouting material disclosed by the invention has excellent flowability, water-retaining property and cohesiveness, improves the compactness and filling degree of the slurry, and reduces the shrinkage of the slurry in a plastic stage and the shrinkage of the hardened slurry.
一种压浆料，包括如下重量份组分：胶凝材料94.6‑96.7份；聚羧酸系减水剂0.2‑0.4份；消泡剂0.02‑0.04份；防沉保水剂0.01‑0.03份；混凝土膨胀剂3‑5份；塑性膨胀剂0.03‑0.05份；所述胶凝材料包括如下组分：硅酸盐水泥82‑90份；硅灰5‑10份；超细石粉1‑5份；粉煤灰0‑3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，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)按比例取料，加入到混料设备中混合均匀，经均化处理后得到压浆料。本发明压浆料，具有优良的流动性、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 discloses a grouting material which comprises the following components in parts by weight: 94.6-96.7 parts of a cementing material; 0.2 to 0.4 part of a polycarboxylic acid type water reducing agent; 0.02 to 0.04 part of a defoaming agent; 0.01 to 0.03 part of an anti-settling water-retaining agent; 3-5 parts of a concrete expansive agent; 0.03 to 0.05 part of a plastic expanding agent; the cementing material comprises the following components: 82-90 parts of Portland cement; 5-10 parts of silica fume; 1-5 parts of superfine stone powder; and 0-3 parts of fly ash. A preparation method comprises the following steps: (1) mixing limestone with gypsum and a grinding aid, and grinding until the specific surface area is 1000-1500m < 2 >/kg to obtain superfine stone powder, 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) taking the materials in proportion, adding the materials into mixing equipment, uniformly mixing, and homogenizing to obtain the grouting material. The grouting material disclosed by the invention has excellent flowability, water-retaining property and cohesiveness, improves the compactness and filling degree of the slurry, and reduces the shrinkage of the slurry in a plastic stage and the shrinkage of the hardened slurry.
一种压浆料，包括如下重量份组分：胶凝材料94.6‑96.7份；聚羧酸系减水剂0.2‑0.4份；消泡剂0.02‑0.04份；防沉保水剂0.01‑0.03份；混凝土膨胀剂3‑5份；塑性膨胀剂0.03‑0.05份；所述胶凝材料包括如下组分：硅酸盐水泥82‑90份；硅灰5‑10份；超细石粉1‑5份；粉煤灰0‑3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，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)按比例取料，加入到混料设备中混合均匀，经均化处理后得到压浆料。本发明压浆料，具有优良的流动性、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
一种压浆料及其制备方法
YAO BIN (Autor:in) / PAN CHENGGONG (Autor:in) / YI SHUCHENG (Autor:in) / YANG TAO (Autor:in) / YANG YI (Autor:in)
09.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME