Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Grouting agent and preparation method thereof
The invention discloses a grouting agent. The grouting agent comprises the following components in parts by weight: 5-12 parts of a polycarboxylic acid water reducer; 0.2 to 0.4 part of a defoaming agent; 0-0.3 part of an anti-settling water-retaining agent; 30-70 parts of a concrete expansive agent; 0.2 to 0.6 part of a plastic expanding agent; 0-30 parts of silica fume; 10 to 50 parts of ultrafine stone powder; 0-20 parts of granulated blast furnace slag powder; and 0-20 parts of fly ash. The grouting agent is prepared by the following steps: 1) mixing limestone with gypsum and a grinding aid, grinding until the specific surface area is 1000-1500m < 2 >/kg to obtain ultra-fine stone powder for later use, 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 according to the ratio, adding the materials into a mixing device, uniformly mixing, and homogenizing to obtain the grouting agent. The grouting agent is used for preparing a grouting material, 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 prestressed duct grouting engineering.
一种灌浆剂，包括如下重量份组分：聚羧酸系减水剂5‑12份；消泡剂0.2‑0.4份；防沉保水剂0‑0.3份；混凝土膨胀剂30‑70份；塑性膨胀剂0.2‑0.6份；硅灰0‑30份；超细石粉10‑50份；粒化高炉矿渣粉0‑20份；粉煤灰0‑20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剂。本发明灌浆剂用于制备灌浆料，可有效解决预应力孔道灌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、抗折强度低等问题。
Grouting agent and preparation method thereof
The invention discloses a grouting agent. The grouting agent comprises the following components in parts by weight: 5-12 parts of a polycarboxylic acid water reducer; 0.2 to 0.4 part of a defoaming agent; 0-0.3 part of an anti-settling water-retaining agent; 30-70 parts of a concrete expansive agent; 0.2 to 0.6 part of a plastic expanding agent; 0-30 parts of silica fume; 10 to 50 parts of ultrafine stone powder; 0-20 parts of granulated blast furnace slag powder; and 0-20 parts of fly ash. The grouting agent is prepared by the following steps: 1) mixing limestone with gypsum and a grinding aid, grinding until the specific surface area is 1000-1500m < 2 >/kg to obtain ultra-fine stone powder for later use, 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 according to the ratio, adding the materials into a mixing device, uniformly mixing, and homogenizing to obtain the grouting agent. The grouting agent is used for preparing a grouting material, 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 prestressed duct grouting engineering.
一种灌浆剂，包括如下重量份组分：聚羧酸系减水剂5‑12份；消泡剂0.2‑0.4份；防沉保水剂0‑0.3份；混凝土膨胀剂30‑70份；塑性膨胀剂0.2‑0.6份；硅灰0‑30份；超细石粉10‑50份；粒化高炉矿渣粉0‑20份；粉煤灰0‑20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剂。本发明灌浆剂用于制备灌浆料，可有效解决预应力孔道灌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、抗折强度低等问题。
Grouting agent and preparation method thereof
一种灌浆剂及其制备方法
JIE MINGZHOU (Autor:in) / PAN CHENGGONG (Autor:in) / YAO BIN (Autor:in) / YI SHUCHENG (Autor:in) / YANG YI (Autor:in)
03.12.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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