A kind of C30 high impermeability concrete with low glue material consumption and preparation method thereof
A concrete and low-cementation technology, applied in the field of building materials, can solve the problems of lack of effective monitoring of impermeability performance and insufficient impermeability, and achieve the effects of improving the structure of the interface transition zone, reducing the microhardness and reducing the cost.
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Embodiment 1
[0026] A C30 impermeable concrete with a low amount of glue material, the components and contents of the C30 high impermeability concrete with a low amount of cementitious material are as follows: 3 The concrete contains 130 parts of cement, 55 parts of fly ash, 90 parts of mineral powder, 18 parts of silica fume, 25 parts of stone powder, 35 parts of modified metakaolin, 520 parts of machine-made sand, 350 parts of river sand, and 1020 parts of crushed stone. 5.4 parts of carboxylic acid water reducer, 170 parts of water; the modified metakaolin is prepared by exciting modification with 0.5% epoxy silane coupling agent, 1% polystyrene and 3% gypsum accounting for the mass of metakaolin. The amount of each cementitious material can be taken as the lower limit, while ensuring the maximum strength, it also has excellent impermeability.
Embodiment 2
[0032] The difference between this embodiment and Example 1 is: a C30 impermeable concrete with a low amount of cementitious material, and the components and contents of the C30 high impermeable concrete with a low amount of cementitious material are as follows: 3 The concrete contains 130 parts of cement, 55 parts of fly ash, 90 parts of mineral powder, 18 parts of silica fume, 25 parts of stone powder, 20 parts of modified metakaolin, 520 parts of machine-made sand, 350 parts of river sand, and 1020 parts of crushed stone. 5.4 parts of carboxylic acid water reducer and 170 parts of water; the modified metakaolin is prepared by excitation modification with 1.5% epoxy silane coupling agent, 3% polystyrene and 7% gypsum accounting for the mass of metakaolin.
Embodiment 3
[0034] The difference between this embodiment and Example 1 is: a C30 impermeable concrete with a low amount of cementitious material, and the components and contents of the C30 high impermeable concrete with a low amount of cementitious material are as follows: 3 The concrete contains 130 parts of cement, 55 parts of fly ash, 90 parts of mineral powder, 18 parts of silica fume, 25 parts of stone powder, 20 parts of modified metakaolin, 520 parts of machine-made sand, 350 parts of river sand, and 1020 parts of crushed stone. 5.4 parts of carboxylic acid water reducer and 170 parts of water; the modified metakaolin is prepared by exciting modification with 1% epoxy silane coupling agent, 2% polystyrene and 5% gypsum accounting for the mass of metakaolin.
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