Early-strength insulator cement adhesive
A cement adhesive and insulator technology, applied in the field of building materials, can solve the problems of poor fluidity of cement adhesive, high cost of cement adhesive, influence on mechanical strength of finished products, etc. The effect of the time when the packaging leaves the factory
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[0033] The preparation process of the early-strength insulator cement adhesive of the present invention is as follows:
[0034] The raw materials used are calculated as:
[0035] P·O5 2.5 Portland cement 30%-40%
[0036] Sand 35%-45%
[0037] Water reducing agent 0.4%-1.0%
[0038] Mixed mineral admixture 5%-15%
[0039] Water 9%-15%;
[0040] The mixed mineral admixture contains active silica powder, which is a powder product obtained by grinding and grading siliceous rocks generated by volcanic ash deposition, with an average particle size of d=1.53μm; the rest of the mixed mineral admixture is The components are one or two kinds of slag powder and fly ash; the standard curing of insulator cement adhesive is 7 days, the flexural strength reaches more than 11.5MPa, and the compressive strength reaches more than 105MPa; 40°C high temperature and humidity curing for 24 hours, The flexural strength reaches above 9.6MPa, and the compressive strength reaches above 97.6MPa.
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Embodiment 1
[0046] A new super-early-strength insulator cement adhesive, its configuration formula is as follows: P·O52.5 Portland cement 30%, sand 40%, water reducing agent 0.6%, composite mineral admixture 15%, water 14.4%. Its preparation includes the following steps: configuring a high-performance composite mineral admixture, and the mass ratio of active silicon powder: slag fine powder: fly ash is 1:1.8. Mix cement, water reducer, mixed mineral admixture, and defoamer, and stir with a mixer for 60 seconds until the powder is evenly mixed. Add water, stir for 2 minutes, then add sand, stir for 2 minutes, and then take out the shape.
Embodiment 2
[0048] A new super-early-strength insulator cement adhesive, its configuration formula is as follows: P·O5 2.5 Portland cement 35%, sand 42%, water reducing agent 0.7%, mixed mineral admixture 12%, water 10.3%. Its preparation includes the following steps: configuring high-performance composite mineral admixture, and the mass ratio of active silicon powder: slag fine powder: fly ash is 1:1.8:0.3. Mix cement, water reducer, mixed mineral admixture and defoamer, and stir with a mixer for 60 seconds, until the powder is mixed evenly, (3) add water, stir for 2 minutes, then add sand, stir for 2 minutes, and then take out the shape .
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