A kind of lightweight aggregate concrete and its preparation process
A lightweight aggregate concrete and lightweight aggregate technology, applied in the field of building materials, can solve problems affecting construction efficiency and progress, affecting concrete uniformity, slump loss, etc., to reduce weight, light weight, and improve structural compactness Effect
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Embodiment 1
[0027] A lightweight aggregate concrete, calculated per cubic meter, its raw material components include: fly ash 80kg, expanded spherulite 50kg, P.O.42.5 Portland cement 200kg, light and fine aggregate 350kg, light and coarse aggregate 150kg , 350kg of sand, 100kg of water, 4kg of water reducing agent, 8kg of vanillin-grafted chitosan, wherein the particle size ratio of light-fine aggregate and light-coarse aggregate is 0.15, and the water content of expanded spherulite is 2%, and its The particle size is 8 mm, and the fineness modulus of the sand is 2.5.
[0028] The preparation technology of above-mentioned concrete, comprises the following steps:
[0029] (1) Mix the light-fine aggregate and the light-coarse aggregate evenly, add a sufficient amount of water to soak for 10 hours, add vanillin-grafted chitosan after 2 hours of filtration, and stir to obtain a light-weight aggregate mixture;
[0030] (2) mix cement, sand, fly ash and water and stir evenly, then add expanded...
Embodiment 2
[0033] A lightweight aggregate concrete, calculated per cubic meter, its raw material components include: fly ash 80kg, expanded pearlite 50kg, P.O.42.5 Portland cement 200kg, light and fine aggregate 450kg, light and coarse aggregate 150kg , 350kg of sand, 100kg of water, 4kg of water reducing agent, 8kg of vanillin-grafted chitosan, wherein the particle size ratio of light-fine aggregate and light-coarse aggregate is 0.15, and the water content of expanded spherulite is 2.2%. The particle size is 8 mm, and the fineness modulus of the sand is 3.
[0034] The preparation technology of above-mentioned concrete, comprises the following steps:
[0035] (1) Mix the light-fine aggregate and the light-coarse aggregate evenly, add a sufficient amount of water to soak for 15 hours, add vanillin-grafted chitosan after being filtered for 3 hours, and stir to obtain a light-weight aggregate mixture;
[0036] (2) mix cement, sand, fly ash and water and stir evenly, then add expanded sphe...
Embodiment 3
[0039] A lightweight aggregate concrete, calculated per cubic meter, its raw material components include: fly ash 80kg, expanded spherulite 50kg, P.O.42.5 Portland cement 200kg, light and fine aggregate 350kg, light and coarse aggregate 150kg , 350kg of sand, 100kg of water, 4kg of water reducing agent, 8kg of vanillin-grafted chitosan, wherein the particle size ratio of light-fine aggregate and light-coarse aggregate is 0.15, and the water content of expanded spherulite is 2%. The particle size is 8 mm, and the fineness modulus of the sand is 2.5.
[0040] The preparation technology of above-mentioned concrete, comprises the following steps:
[0041] (1) Light and coarse aggregates are calcined at a temperature of 700 °C according to the construction concrete brick waste, and then grinded for 3 hours to obtain particles with a particle size of 6 mm, which are mixed with light and coarse aggregates evenly and then soaked in a sufficient amount of water 10h, add vanillin-graft...
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