Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cement grouting material suitable for marine environment and preparation method thereof
The invention relates to the field of grouting materials, and particularly discloses a cement grouting material suitable for a marine environment, which comprises the following raw materials by weight: 300-450 parts of cement; 70-220 parts of an active filler; 440 to 530 parts of graded aggregate; 1.5 to 4.5 parts of a water reducing agent; 0.5 to 2 parts of a defoaming agent; 5-20 parts of a composite expanding agent; 0.05 to 0.3 part of a rheological agent; the composite expanding agent is formed by compounding a plastic expanding agent and an ettringite lime composite expanding agent; the rheological agent is a microbial fermentation type rheological modifier; the water reducing agent is a modified polycarboxylic acid ether powdery water reducing agent with a comb-shaped structure. Through the synergistic effect of the raw materials such as the gel material, the active filler, the rheological agent, the composite expanding agent and the water reducing agent, the grouting material has excellent fluidity and system stability and high dispersion resistance in water, under the condition that fibers are not added, the 28d compressive strength exceeds 125MPa, the chloride ion permeability coefficient is extremely low, the sulfate corrosion resistance is high, and the grouting material has good application prospects. The ultrahigh-strength cement grouting material is very suitable for extremely complex marine environments.
本发明涉及灌浆材料领域，具体公开了一种适用于海洋环境的水泥灌浆料，包括如下按重量份数计的原料：水泥300‑450份；活性填料70‑220份；级配骨料440‑530份；减水剂1.5‑4.5份；消泡剂0.5‑2份；复合膨胀剂5‑20份；流变剂0.05‑0.3份；所述复合膨胀剂由塑性膨胀剂、钙矾石石灰复合系膨胀剂复合而成；所述流变剂为微生物发酵型流变调节剂；所述减水剂为梳型结构的改性聚羧酸醚粉末状减水剂。本发明通过凝胶材料、活性填料、流变剂、复合膨胀剂、减水剂等原料之间协同作用，使得灌浆料具有极佳的流动性和体系稳定性，水中抗分散能力强，在不掺加纤维条件下，28d抗压强度超过125MPa，氯离子渗透系数极低，抗硫酸盐侵蚀能力强，是一款非常适用于极为复杂的海洋环境的超高强水泥灌浆材料。
Cement grouting material suitable for marine environment and preparation method thereof
The invention relates to the field of grouting materials, and particularly discloses a cement grouting material suitable for a marine environment, which comprises the following raw materials by weight: 300-450 parts of cement; 70-220 parts of an active filler; 440 to 530 parts of graded aggregate; 1.5 to 4.5 parts of a water reducing agent; 0.5 to 2 parts of a defoaming agent; 5-20 parts of a composite expanding agent; 0.05 to 0.3 part of a rheological agent; the composite expanding agent is formed by compounding a plastic expanding agent and an ettringite lime composite expanding agent; the rheological agent is a microbial fermentation type rheological modifier; the water reducing agent is a modified polycarboxylic acid ether powdery water reducing agent with a comb-shaped structure. Through the synergistic effect of the raw materials such as the gel material, the active filler, the rheological agent, the composite expanding agent and the water reducing agent, the grouting material has excellent fluidity and system stability and high dispersion resistance in water, under the condition that fibers are not added, the 28d compressive strength exceeds 125MPa, the chloride ion permeability coefficient is extremely low, the sulfate corrosion resistance is high, and the grouting material has good application prospects. The ultrahigh-strength cement grouting material is very suitable for extremely complex marine environments.
本发明涉及灌浆材料领域，具体公开了一种适用于海洋环境的水泥灌浆料，包括如下按重量份数计的原料：水泥300‑450份；活性填料70‑220份；级配骨料440‑530份；减水剂1.5‑4.5份；消泡剂0.5‑2份；复合膨胀剂5‑20份；流变剂0.05‑0.3份；所述复合膨胀剂由塑性膨胀剂、钙矾石石灰复合系膨胀剂复合而成；所述流变剂为微生物发酵型流变调节剂；所述减水剂为梳型结构的改性聚羧酸醚粉末状减水剂。本发明通过凝胶材料、活性填料、流变剂、复合膨胀剂、减水剂等原料之间协同作用，使得灌浆料具有极佳的流动性和体系稳定性，水中抗分散能力强，在不掺加纤维条件下，28d抗压强度超过125MPa，氯离子渗透系数极低，抗硫酸盐侵蚀能力强，是一款非常适用于极为复杂的海洋环境的超高强水泥灌浆材料。
Cement grouting material suitable for marine environment and preparation method thereof
适用于海洋环境的水泥灌浆料及其制备方法
WANG XIAOPING (Autor:in) / ZHU RONGHUA (Autor:in) / TIAN ZHENYA (Autor:in) / HU BIN (Autor:in) / SUN XIANG (Autor:in) / QU LIBO (Autor:in) / LU WANGSHU (Autor:in)
15.07.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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