Full-lightweight ceramsite concrete and preparation method thereof
A technology of ceramsite concrete and ceramsite, which is applied in the field of building materials, can solve the problems of not meeting the requirements, increasing the porosity of concrete, and low early strength, so as to meet the requirements of density and strength, and improve cohesion and water retention , the effect of reducing concrete damage
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Embodiment 1
[0041] An all-light ceramsite concrete, comprising the following components in parts by weight: cement: 308 parts, ceramsite: 318 parts, ceramsite: 382 parts, fly ash: 50 parts, silica fume: 39 parts, water reducing Dosage: 1.9 parts.
[0042] The cement is ordinary Portland cement, the density grade of the ceramsite is 500, the particle size is 5-10mm, the water absorption rate is 9% in 1h, and the apparent density is 720Kg / m 3 ; The density grade of the pottery sand is 500, the fineness modulus is 2.8, the 1h water absorption rate is 32%, and the apparent density is 1300Kg / m 3 .
[0043] The fly ash is national standard II grade fly ash, with a specific surface area of 260m2 / kg; the SiO2 content of the silica fume is ≥ 94%, and the specific surface area is ≥ 22000m2 / kg; the water reducer is a polycarboxylic acid high-performance water reducer .
preparation Embodiment 1
[0045] (1) Screen light aggregates (ceramsite and ceramsite), select shale ceramsite with a density grade of 500 (particle size 5-10 mm), and select ceramsite with a fineness modulus of about 2.8.
[0046] (2) Pre-wet the light aggregate, soak and saturate the light aggregate, filter the water through a square hole sieve with a sieve diameter of 0.075cm, and let the saturated surface dry in the air.
[0047] (3) Mixture preparation: uniformly mix ceramsite, ceramsite, cement, silica fume, fly ash, water, water reducing agent and cellulose respectively to obtain full light ceramsite concrete.
Embodiment 2
[0049] An all-light ceramsite concrete, comprising the following components in parts by weight: cement: 339 parts, ceramsite: 318 parts, ceramsite: 382 parts, fly ash: 55 parts, silica fume: 42 parts, water reducing Dosage: 1.7 parts.
[0050] The cement is ordinary Portland cement, the density grade of the ceramsite is 500, the particle size is 5-10mm, the water absorption rate is 9% in 1h, and the apparent density is 720Kg / m 3 ; The density grade of the pottery sand is 500, the fineness modulus is 2.8, the 1h water absorption rate is 32%, and the apparent density is 1300Kg / m 3 .
[0051] The fly ash is national standard II grade fly ash, with a specific surface area of 260m2 / kg; the SiO2 content of the silica fume is ≥ 94%, and the specific surface area is ≥ 22000m2 / kg; the water reducer is a polycarboxylic acid high-performance water reducer .
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