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Porous ceramsite concrete as well as preparation method and application thereof

A technology of porous pottery and concrete, applied in the field of building construction, can solve the problems of affecting construction quality, broken density and stratification, etc., and achieve the effects of low density, low apparent density, and poor thermal insulation and sound insulation

Inactive Publication Date: 2019-10-25
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for porous ceramsite with low density and low strength, the existing construction technology will still cause a lot of fragmentation and density stratification, which will affect the construction quality. At present, there is no suitable construction method to solve the above problems

Method used

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  • Porous ceramsite concrete as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation method of porous ceramsite concrete comprises the following steps:

[0029] Step 1: Select porous ceramsite with a particle size of 5mm and pre-wet it in water at 20°C for 1 hour to obtain wet porous ceramsite;

[0030] Step 2: Weigh the cementitious material (PC325), water, fine aggregate (coarse sand) and polycarboxylate superplasticizer at a mass ratio of 1:0.2:1.3:0.005, and stir the cementitious material and fine aggregate While adding a forced sandstone mixer, stir at 20rpm for 30s, then slowly pour the mixture of water and polycarboxylate superplasticizer into the mixer, stir for 60s to mix evenly, and obtain a cementitious material slurry;

[0031] Step 3: According to the mass ratio of cementitious material slurry to porous ceramsite: 1:0.05, weigh the wet porous ceramsite obtained in step 1 and the cementitious material slurry obtained in step 2, and then spread the wet porous ceramsite evenly on the concrete After pouring the cementitious mat...

Embodiment 2

[0033] The preparation method of porous ceramsite concrete comprises the following steps:

[0034] Step 1: Select porous ceramsite with a particle size of 5mm and pre-wet it in water at 20°C for 1 hour to obtain wet porous ceramsite;

[0035] Step 2: Weigh the cementitious material (PC425), water, fine aggregate (coarse sand) and polycarboxylate superplasticizer at a mass ratio of 1:0.35:1.62:0.005, and stir the cementitious material and fine aggregate While adding a forced sandstone mixer, stir at 30rpm for 30s, then slowly pour the mixture of water and polycarboxylate superplasticizer into the mixer, stir for 60s to mix evenly, and obtain a cementitious material slurry;

[0036] Step 3: According to the mass ratio of cementitious material slurry and porous ceramsite to 1:0.2, weigh the wet porous ceramsite obtained in step 1 and the cementitious material slurry obtained in step 2, and then spread the wet porous ceramsite evenly Concrete mold, pour the cementitious material ...

Embodiment 3

[0038] The preparation method of porous ceramsite concrete comprises the following steps:

[0039] Step 1: Select porous ceramsite with a particle size of 8mm and pre-wet it in water at 20°C for 1 hour to obtain wet porous ceramsite;

[0040] Step 2: Weigh the cementitious material (PC425), water, fine aggregate (coarse sand) and polycarboxylate superplasticizer at a mass ratio of 1:0.2:1.32:0.01, and stir the cementitious material and fine aggregate While adding a forced sandstone mixer, stir at 40rpm for 30s, then slowly pour the mixture of water and polycarboxylate superplasticizer into the mixer, stir for 60s to mix evenly, and obtain a cementitious material slurry;

[0041]Step 3: According to the mass ratio of cementitious material slurry and porous ceramsite: 1:0.15, weigh the wet porous ceramsite obtained in step 1 and the cementitious material slurry obtained in step 2, and then spread the wet porous ceramsite evenly on the concrete mold, and pour the cementitious ma...

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Abstract

The invention discloses porous ceramsite concrete. The porous ceramsite concrete is composed of cementing material slurry and porous ceramsite according to a mass ratio of 1:(0.05-0.2), and the cementing material slurry is formed by mixing a cementing material, water, fine aggregate and a polycarboxylic acid high-efficiency water reducing agent. The invention also discloses a preparation method and application of the porous ceramsite concrete. According to the method provided by the invention, a ratio of the porous ceramsite to the cementing material slurry is reasonably adjusted, the pre-wettreated porous ceramsite is spread in a concrete mold, the cementing material slurry is poured into the upper layer of the wet porous ceramsite, the upper layer of the porous ceramsite is pressed by using a cover plate with a same material as the mold, vibration is performed by using a vibrating rod, the material is allowed to stand, and curing is performed to obtain the porous ceramsite concrete;and the structure of the porous ceramics can be prevented from being destroyed due to stirring, the condition that ceramsite concrete has easy layered segregation can be improved, and the prepared porous ceramsite concrete has the characteristics of a low apparent density, high strength and good heat insulation and sound insulation, and can be widely used in various construction projects.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a porous ceramsite concrete and its preparation method and application. Background technique [0002] With the rapid development of the construction industry and the continuous advancement of urbanization, traditional sand and gravel aggregate resources are constantly being consumed. In order to protect the earth's resources, more and more people use ceramsite to replace traditional sandstone as concrete aggregate to prepare ceramsite concrete. Compared with traditional concrete, ceramsite concrete has the characteristics of light weight, high strength, heat preservation and sound insulation. According to these characteristics, ceramsite concrete is widely used in different types of buildings such as high-rise buildings, subway construction, and building exterior walls. [0003] Due to the low density of ceramsite, its strength is lower than that of traditional sand and grav...

Claims

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Application Information

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IPC IPC(8): C04B28/02C04B111/40
CPCC04B28/02C04B2111/40C04B2201/32C04B2201/50C04B14/06C04B2103/302C04B18/027C04B40/0067C04B40/0245
Inventor 李辉郑伍魁张静洁杨雨玄
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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