Airtight concrete material and preparation method thereof
A concrete and air tightness technology, which is applied in the field of building construction materials to achieve the effects of increasing density, improving impermeability and improving action energy.
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Embodiment 1
[0022] Embodiment 1: The volume ratio of coarse aggregate in the described airtight concrete material is 39.1%, the volume ratio of fine aggregate is 29.4%, the volume ratio of cement is 10.8%, and the volume ratio of ground mineral powder is 1.8% %, the volume ratio of fly ash is 2.5%, the volume ratio of water is 14.6%, the volume ratio of water reducer and special air-entraining agent is 1.4% in total, and the volume ratio of voids or pores is 0.4%. .
Embodiment 2
[0023] Embodiment 2: The volume ratio of coarse aggregate in the described airtight concrete material is 37.5%, the volume ratio of fine aggregate is 28.2%, the volume ratio of cement is 12.1%, and the volume ratio of ground mineral powder is 1.9% %, the volume ratio of Class II fly ash is 3.4%, the volume ratio of water is 15.1%, the volume ratio of water reducing agent and special air-entraining agent is 1.5% in total, and the volume ratio of voids or pores is 0.3%.
[0024] The continuous gradation of limestone coarse aggregate in the above-mentioned examples 1 and 2 has a particle size of 5-25 mm; the fineness modulus of the clean middle river sand is 2.6-2.8, and the continuous gradation; the ground fine mineral powder is F grade ; The fly ash is grade II ash, and the main chemical components of mineral powder, fly ash, etc. are CaO, SiO 2 、Al 2 o 3 , Fe 2 o 3 etc.; the cement is ordinary Portland cement (P.O), with a strength grade of about 42.5MPa, 2CaO·SiO 2 and 3...
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