Precast slab as well as preparation method and application thereof
A prefabricated board and cement technology, applied in the field of construction, can solve the problems of uneven force, affecting thermal insulation performance, poor mortar homogeneity, etc., and achieve the effect of reducing the thickness of thermal insulation layer, improving safety and reliability, and simple production process
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Embodiment 1
[0039]Materials: 30 parts of ordinary portland cement, 10 parts of silica fume and fly ash mixture, 40 parts of steel slag, 20 parts of slag and polyphenylene particles, 0.05 parts of powdered polycarboxylate superplasticizer, 0.05 parts of tributyl phosphate , 0.08 parts of alkali-resistant glass fiber and 12 parts of water. Among them, the specification of ordinary Portland cement is 42.5; the fly ash is Class I, the particle size of silica fume is 0.1um, and the bulk density is 350kg / m 3 The fineness modulus of the steel slag is 2.4, and the mud content is 3%; the particle size of the slag is 16mm, the cylinder compressive strength is 4.2MPa, the mud content is 0.2%, the 1h water absorption rate is 8.2%, and the bulk density is 1030kg / m 3 ; The particle size of polyphenylene particles is 1 mm, which can be replaced by waste polystyrene particles; the water reducing rate of powdered polycarboxylate water reducer is 25%.
[0040] Preparation: Dry mix ordinary Portland cement...
Embodiment 2
[0043] Materials: 40 parts of ordinary Portland cement, 5 parts of silica fume and slag mixture, 55 parts of steel slag, 15 parts of fly ash ceramsite and polystyrene particles, 0.08 parts of powdered polycarboxylate superplasticizer, 0.02 parts of polyethylene glycol 0.10 parts of polypropylene fiber and 9 parts of water. Among them, the specification of ordinary Portland cement is 42.5R; the slag is S95 grade, the particle size of silica fume is 0.3um, and the bulk density is 200kg / m 3 The fineness modulus of steel slag is 2.8, and the mud content is 2.8%; the particle size of fly ash ceramsite is 3mm, the cylinder compressive strength is 6.2MPa, the mud content is 0.08%, the 1h water absorption rate is 5.4%, and the bulk density is 860kg / m 3 ; The particle size of polyphenylene particles is 5mm; the water reducing rate of powdered polycarboxylate water reducer is 27%.
[0044] Preparation: Dry mix ordinary Portland cement, silica fume and slag mixture, steel slag, fly ash ...
Embodiment 3
[0047] Materials: 35 parts of ordinary Portland cement, 8 parts of silica fume and fly ash mixture, 45 parts of steel slag, 9 parts of slag and polyphenylene particles, 0.06 parts of powdered polycarboxylate superplasticizer, 0.04 parts of polysiloxane 0.09 parts of polyacrylonitrile fiber and polyester fiber and 10 parts of water. Among them, the specification of ordinary Portland cement is 42.5; the fly ash is Class I, the particle size of silica fume is 0.2um, and the bulk density is 300kg / m 3 The fineness modulus of the steel slag is 2.6, and the mud content is 2.8%; the particle size of the slag is 10mm, the cylinder compressive strength is 4.2MPa, the mud content is 0.2%, the 1h water absorption rate is 8.2%, and the bulk density is 1030kg / m 3 ; The particle size of polyphenylene particles is 3mm; the water reducing rate of powdered polycarboxylate water reducer is 26%.
[0048] Preparation: Dry mix ordinary Portland cement, silica fume and fly ash mixture, steel slag, ...
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