Low-viscosity cement-based repairing slurry as well as preparation method and construction process thereof
A cement-based, low-viscosity technology, which is used in the field of micro-crack repair, low-viscosity cement-based slurry, and grouting cavity (hole) repair in steel sleeves. Meet the needs of steel sleeve repair and other problems, and achieve the effect of long-term stable deformation performance
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Embodiment 1
[0108] Cement 30%, mineral admixture 12%, fine aggregate 35%, functional material 1.8%, composite admixture 4.2%, mixing water 17%. Among them, the cement is P×O52.5 ordinary Portland cement. Among the mineral admixtures, fly ash is 55%, glass microspheres are 25%, and silica fume is 20%. The silica fume is SF90 grade. Calcium 5%, nano-alumina 15%, sodium sulfate 55%, dihydrate gypsum 3%, sodium humate 12%, talcum powder 6%, sodium lauryl sulfate 4%. Water agent 2%, expansion agent 92.5%, retarder 5%. Preparation method: Weigh each material according to the proportion of raw materials; put the composite admixture, functional material and mineral admixture into the mixing bin, and stir for 2 minutes; add cement and fine aggregate into the mixing bin, and stir for 3 minutes; form The dry mix of low-viscosity cement-based grout should be packed and transported in bags; the dry mix and mixing water should be weighed in proportion at the construction site, and the low-viscosity ce...
Embodiment 2
[0110] Cement 35%, mineral admixture 11%, fine aggregate 31%, functional material 1.4%, composite admixture 6.6%, mixing water 17%. Among them, the cement is P×O52.5R early-strength ordinary Portland cement. Among the mineral admixtures, fly ash is 65%, glass microspheres are 20%, and silica fume is 15%. Silica fume is SF93 grade. , 10% nano-calcium carbonate, 10% nano-alumina, 65% sodium sulfate, 3.5% dihydrate gypsum, 6.5% sodium humate, 3% talcum powder, 2% sodium lauryl sulfate, among the composite admixtures, poly Carboxylic acid water reducer 3.5%, expansion agent 94.2%, retarder 2%; put composite admixtures, functional materials and mineral admixtures into the mixing chamber, and stir for 2 minutes; add cement, fine Aggregate, stirred for 3 minutes; form a low-viscosity cement-based grouting dry mix, which is packed and transported in bags; weigh the dry mix and mixing water in proportion at the construction site, and stir for 3 minutes to prepare low-viscosity cement ...
Embodiment 3
[0112] Cement 40%, mineral admixture 10%, fine aggregate 25%, functional material 2%, composite admixture 8%, mixing water 15%. Among them, the cement is P×II52.5 early-strength ordinary Portland cement. Among the mineral admixtures, fly ash is 65%, glass microspheres are 20%, and silica fume is 15%. Silica fume is SF95 grade. , 15% nano-calcium carbonate, 10% nano-alumina, 45% sodium sulfate, 3.5% dihydrate gypsum, 6.5% sodium humate, 15% talcum powder, 5% sodium lauryl sulfate, among the composite admixtures, poly Carboxylic acid superplasticizer 4.5%, expansion agent 95%, retarder 0.5%. Preparation method: Weigh each material according to the proportion of raw materials; put the composite admixture, functional material and mineral admixture into the mixing bin, and stir for 2 minutes; add cement and fine aggregate into the mixing bin, and stir for 3 minutes; form The dry mix of low-viscosity cement-based supplementary grout is packed and transported in bags; the dry mix an...
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