Long pumping distance machine-made sand concrete
A technology for machine-made sand and concrete, applied in the field of concrete, can solve the problems of wasting resources, increasing engineering costs, and limiting the scope of application of mountain sand concrete.
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Embodiment 1
[0191] Embodiment 1 of the present invention: by weight, adopt Guizhou Shuicheng Cement Plant Wumengshan P.O42.5 cement 400, machine-made sand 800 produced by Guanling Jiwo field stockyard, the requirement of machine-made sand is, fineness modulus 3.05, dust content less than 7%, 5-16mm particle size crushed stone 310, 16-25mm particle size crushed stone 720, tap water 160, Guizhou Anshun Power Plant Class I fly ash 75, Guangdong Zhanjiang FDN-5 high-efficiency water reducer 18. The water-reducing rate of the water-reducing agent can reach 20-30%. Mix and stir various raw materials to prepare concrete. When in use, concrete can be pumped to a height of more than 200 meters at a time.
Embodiment 2
[0192] Embodiment 2 of the present invention: by weight, adopt Guizhou Shuicheng Cement Plant Wumengshan P.O42.5 cement 425, machine-made sand 780, 5-16mm grain size crushed stone 300, 16 of Guanling Jiwo field stockyard production -25mm particle size crushed stone 700, tap water 155, Guizhou Anshun Power Plant Class I fly ash 80, Guangdong Zhanjiang FDN-5 type high-efficiency water reducer 24, mix and stir various raw materials to prepare concrete.
Embodiment 3
[0193] Embodiment 3 of the present invention: By weight, adopt P.O42.5 cement 407, machine-made sand 791, 5-16mm particle diameter crushed stone 307, 16-25mm particle diameter crushed stone 714, tap water 157.6, I grade fly ash 77.6, superplasticizer 19.4, mix and stir various raw materials to prepare concrete.
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