Surface-coated ceramsite for lightweight aggregate concrete and preparation method thereof
A technology of lightweight aggregate concrete and ceramsite, which is applied in the field of concrete, can solve the problems of increasing ceramsite manufacturing cost, long time, and affecting work efficiency, and achieve the effect of improving work performance, reducing shrinkage, and facilitating bonding
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Embodiment 1
[0027] The coated ceramsite in this embodiment is composed of round ceramsite and a fly ash slurry film layer covering the surface of the ceramsite, wherein the ceramsite has a particle size of 5-20 mm and is continuously graded. The water absorption rate of the ceramsite is 1.0wt%, and the fly ash slurry in the fly ash slurry film layer is composed of 1wt% fly ash, 99wt% water and 2.0wt% polycarboxylate mixed with fly ash quality. Composed of acid water reducer, the thickness of the fly ash slurry film layer is 50 μm.
[0028] The preparation method of surface-coated ceramsite for lightweight aggregate concrete described in the foregoing embodiments comprises the following steps:
[0029] (1) Determination of the water absorption rate of ceramsite: place the ceramsite at the natural environment temperature for a period of time, weigh 1kg of ceramsite, and then soak it in water for 1 hour, use a wet towel to absorb the water on the surface of the ceramsite, and then weigh it as ...
Embodiment 2
[0033] The coated ceramsite in this embodiment is composed of round ceramsite and a fly ash slurry film layer covering the surface of the ceramsite, wherein the ceramsite has a particle size of 5-20 mm and is continuously graded. The water absorption rate of the ceramsite is 2.3wt%. The fly ash slurry in the fly ash slurry film layer is composed of 2wt% fly ash and 98wt% water. 2.1% of the mass, and the thickness of the fly ash slurry film layer is 55 μm.
[0034] The preparation method of surface-coated ceramsite for lightweight aggregate concrete described in the foregoing embodiments comprises the following steps:
[0035] (1) Determination of the water absorption rate of ceramsite: place the ceramsite at the natural environment temperature for a period of time, weigh 1kg of ceramsite, and then soak it in water for 1 hour, use a wet towel to absorb the water on the surface of the ceramsite, and then weigh it as wet ceramsite The mass of the granules is calculated as 1.023k...
Embodiment 3
[0039] The film-coated ceramsite in this embodiment is composed of crushed stone-type ceramsite and a fly ash slurry film layer covering the surface of the crushed-stone-type ceramsite, wherein the particle size of the ceramsite is 5-20mm, continuous Grading, the water absorption of the crushed stone type ceramsite is 3.0wt%, and the fly ash slurry in the fly ash slurry film layer is composed of 3wt% fly ash and 97wt% water, and polycarboxylic acid The water reducer accounts for 2.3wt% of the fly ash mass, and the thickness of the fly ash slurry film is 61 μm.
[0040] The preparation method of surface-coated ceramsite for lightweight aggregate concrete described in the foregoing embodiments comprises the following steps:
[0041] (1) Determination of the water absorption rate of ceramsite: place the ceramsite at the natural environment temperature for a period of time, weigh 1kg of ceramsite, and then soak it in water for 1 hour, use a wet towel to absorb the water on the sur...
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