Waste sintered brick and tile environment-friendly lightweight concrete and preparation method thereof
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A lightweight concrete and environment-friendly technology, applied in the field of concrete, can solve the problems of low flexural strength of lightweight aggregate concrete, achieve the effects of improving thermal insulation effect, reducing bulk density, and increasing compressive strength and flexural strength
Active Publication Date: 2020-11-20
HANGZHOU WUYOU BUILDING MATERIALS CO LTD
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In this lightweight aggregate concrete, by adding EPS particles into the raw materials, the EPS particles are distributed in the lightweight aggregate concrete to reduce the thermal conductivity of the lightweight aggregate concrete, but the flexural strength of the lightweight aggregate concrete is low, and its flexural strength The strength is 0.91MPa
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Embodiment 1
[0040] A kind of environmentally friendly lightweight concrete with waste fired bricks and tiles, its raw material ratio is shown in Table 1.
[0041] The preparation method of lightweight concrete comprises the steps:
[0042] Spray soaking water into the waste sintered bricks and tiles, and the amount of soaking water is 13% of the weight of the waste sintered bricks and tiles to obtain the mixture A;
[0043] Spray adsorption water into the fly ash, the amount of water for adsorption is 35% of the weight of the fly ash to obtain the mixture B;
[0044] Mix cement, slag, silica fume, polyacrylonitrile fiber, plastic steel fiber, polystyrene particles, silicon micropowder, polycarboxylate superplasticizer, mixture A, mixture B, and the remaining water to obtain lightweight concrete .
[0045] Among them, the average length of polyacrylonitrile fibers is 4 mm, the average length of plastic steel fibers is 2 mm, the average particle size of silicon micropowder is 25 μm, and t...
Embodiment 2-11
[0049] An environment-friendly lightweight concrete with waste fired bricks and tiles. The difference between Examples 2-11 and Example 1 is that the ratio of raw materials is different, and the ratio of raw materials is shown in Table 1.
Embodiment 12
[0051] An environment-friendly lightweight concrete for waste fired bricks and tiles. The difference between this embodiment and Example 10 is that in the preparation method of environment-friendly lightweight concrete, the amount of soaking water is 10% of the weight of waste fired bricks and tiles , the amount of water for adsorption is 30% of the weight of fly ash, and the average length of polyacrylonitrile fibers is 3mm, the average length of plastic steel fibers is 3mm, the average particle diameter of silicon micropowder is 50μm, and the average particle diameter of polystyrene particles 1mm.
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Abstract
The invention relates to waste sintered brick and tile environment-friendly lightweight concrete and a preparation method thereof, and belonging to the technical field of concrete. The lightweight concrete is prepared from the following raw materials: cement, water, waste sintered bricks and tiles, fly ash, slag, silica fume, polyacrylonitrile fibers, plastic steel fibers, polyphenyl granules, ceramic powder, silica powder, a polycarboxylate superplasticizer and phenolic resin. Through the synergistic effect of the raw materials, the lightweight concrete has good compressive strength and flexural strength under the condition of ensuring that the lightweight concrete has a relatively low heat conductivity coefficient, and meanwhile, the lightweight concrete also has good frost resistance. In the preparation method of the environment-friendly lightweight concrete, the waste sintered bricks and tiles and the soaking water are premixed, and the fly ash and the adsorption water are premixed, so that the influence of the waste sintered bricks and tiles and the fly ash on the mixing effect of the raw materials due to water adsorption is reduced, and the raw materials are uniformly and stably mixed.
Description
technical field [0001] The application relates to the technical field of concrete, more specifically, it relates to an environmentally friendly lightweight concrete and a preparation method thereof. Background technique [0002] With the development of my country's economy, the construction industry has also made rapid progress, especially lightweight concrete. Lightweight concrete, also known as lightweight aggregate concrete, is made of lightweight coarse aggregate, fine aggregate, cement, water, and admixtures. Lightweight concrete is different from ordinary concrete. There are a lot of micropores in lightweight concrete, which makes lightweight concrete have the advantages of light weight, low thermal conductivity, good sound insulation effect, and good seismic performance, and has been widely used in modern concrete technology. . [0003] At present, the patent document with the authorized announcement date of 2014.09.10 and the authorized announcement number CN102643...
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