Pumping light aggregate concrete formula and preparation method thereof
A technology for lightweight aggregate concrete and formulation, which is applied in the field of pumping lightweight aggregate concrete formulation and its preparation, can solve the problems of poor uniformity and general mechanical properties of lightweight aggregate concrete, and achieves improved workability and homogeneity. , Increase the setting time, the effect of excellent flexural strength
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[0029] As a further technical solution: the preparation method of sodium alginate modified attapulgite comprises the following steps:
[0030] (1) Evenly disperse attapulgite into a sodium benzenesulfonate solution with a mass fraction of 6.55%, stir at a speed of 300r / min for 5min, and then let it stand for 10min to obtain a mixed dispersion;
[0031] (2) Add calcium aluminate powder to the mixed dispersion, heat to 72°C, stir at 800r / min for 40min, then filter and wash until neutral to obtain a mixture;
[0032] (3) Add the mixture obtained above into a calciner for calcination treatment for 30 minutes, and then naturally cool to room temperature to obtain a calcined material;
[0033] (4) Add the calcined material obtained above to an 8.5% sodium alginate solution that is 3 times its mass, stir for 20 minutes, heat to 60°C, then ultrasonically treat for 5 minutes, then filter and wash until neutral , that is sodium alginate modified attapulgite.
[0034] As a further tech...
Embodiment 1
[0049] A pumpable lightweight aggregate concrete formula, comprising the following components by weight: 110 parts of cement, 120 parts of fine sand, 150 parts of coarse sand, 110 parts of lignocellulose, 170 parts of water, 60 parts of polyurethane emulsion, pulverized coal Ash 35 parts, sodium polyacrylate 3 parts, sodium alginate modified attapulgite 10 parts, naphthalenesulfonate water reducer 4-6 parts.
[0050] The preparation method of sodium alginate modified attapulgite comprises the following steps:
[0051] (1) Evenly disperse attapulgite into a sodium benzenesulfonate solution with a mass fraction of 6.55%, stir at a speed of 300r / min for 5min, and then let it stand for 10min to obtain a mixed dispersion;
[0052] (2) Add calcium aluminate powder to the mixed dispersion, heat to 72°C, stir at 800r / min for 40min, then filter and wash until neutral to obtain a mixture;
[0053] (3) Add the mixture obtained above into a calciner for calcination treatment for 30 minut...
Embodiment 2
[0061] A pumpable lightweight aggregate concrete formula, comprising the following components in parts by weight: 140 parts of cement, 160 parts of fine sand, 170 parts of coarse sand, 120 parts of lignocellulose, 190 parts of water, 80 parts of polyurethane emulsion, pulverized coal Ash 45 parts, sodium polyacrylate 5 parts, sodium alginate modified attapulgite 14 parts, naphthalenesulfonate water reducer 6 parts.
[0062] As a further technical solution: the preparation method of sodium alginate modified attapulgite comprises the following steps:
[0063] (1) Evenly disperse attapulgite into a sodium benzenesulfonate solution with a mass fraction of 6.55%, stir at a speed of 300r / min for 5min, and then let it stand for 10min to obtain a mixed dispersion;
[0064] (2) Add calcium aluminate powder to the mixed dispersion, heat to 72°C, stir at 800r / min for 40min, then filter and wash until neutral to obtain a mixture;
[0065] (3) Add the mixture obtained above into a calcine...
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