Preparation and construction method of separate concrete for CCW thermal insulation curtain wall

A technology of concrete and thermal insulation curtain, applied in the direction of walls, building components, buildings, etc., can solve the problem of difficult to meet the performance requirements of inner leaf load-bearing shear wall concrete and outer leaf wall concrete at the same time, achieve good workability, guarantee Effect of construction quality, improved workability

Active Publication Date: 2022-01-25
CHINA MCC17 GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the problem that it is difficult to meet the performance requirements of the inner leaf load-bearing shear wall concrete and the outer leaf wall concrete when the existing method is used to prepare the separated concrete for the CCW thermal insulation curtain wall, and provides a CCW thermal insulation curtain wall Preparation and Construction Method of Separated Concrete

Method used

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  • Preparation and construction method of separate concrete for CCW thermal insulation curtain wall
  • Preparation and construction method of separate concrete for CCW thermal insulation curtain wall
  • Preparation and construction method of separate concrete for CCW thermal insulation curtain wall

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preparation example Construction

[0037] Concretely, a kind of preparation method of CCW thermal insulation curtain wall separation type concrete of the present invention comprises the following steps:

[0038] (1) Preparation of primary mixture

[0039] The components of the concrete are weighed and stirred according to the designed mixing ratio to obtain the primary mixture; the components of the concrete include cement, mineral powder, fly ash, sand, gravel, slump retaining agent, retarder, Polycarboxylate superplasticizer and water, wherein the crushed stones are composed of crushed stones with a particle size of 5-10mm 1, crushed stones with a particle size of 10-16mm 2, and crushed stones with a particle size of 10-31.5mm 3. The percentage is 20 %~30%: 30%~40%: 30%~50% mixed in proportion.

[0040] Each component in the primary mixture obtained above is composed by the following unit mass (kg / m 3 ):

[0041]

[0042]

[0043] The above cement is ordinary Portland cement with strength grade 42.5 ...

Embodiment 1

[0054] When preparing separated concrete according to the set strength level, the components of the concrete (ie cement, mineral powder, fly ash, sand, gravel, slump retaining agent, retarder, polycarboxylate superplasticizer and water) )according to figure 1 Weigh and stir the mixing ratio in the mixture to obtain the primary mixture, and detect the technical indicators such as primary mixture slump, expansion degree, initial setting time and slump loss; the primary mixture obtained after stirring is then left to stand for 1.5 Remix after 1 hour, and then sieve it through a string drum with a diameter of 125mm in a vibrating state. The sieve hole size is 12mm. room, measure the strength of 7d and 28d respectively, and adjust the mix ratio of the primary mixture according to the measured strength of the concrete on the screen according to the "Ordinary Concrete Mix Proportion Design Regulations" JGJ55-2011, that is, the mix of CCW insulation curtain wall separated concrete for...

Embodiment 2

[0058] When preparing separated concrete according to the set strength level, the components of the concrete (ie cement, mineral powder, fly ash, sand, gravel, slump retaining agent, retarder, polycarboxylate superplasticizer and water) )according to figure 1 Weigh and stir the mixing ratio in the mixture to obtain the primary mixture, and detect technical indicators such as primary mixture slump, expansion degree, initial setting time and slump loss; the primary mixture obtained after stirring is then left to stand for 2 Remix after 1 hour, and then sieve it through a string drum with a diameter of 125mm in a vibrating state. The sieve hole size is 12mm. room, measure the strength of 7d and 28d respectively, and adjust the mix ratio of the primary mixture according to the measured strength of the concrete on the screen according to the "Ordinary Concrete Mix Proportion Design Regulations" JGJ55-2011, that is, the mix of CCW insulation curtain wall separated concrete for pouri...

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Abstract

The invention discloses a preparation and construction method of separated concrete for a CCW thermal insulation curtain wall, and belongs to the technical field of building material concrete. The preparation method comprises the steps of first preparing the primary mixture, then standing it, remixing and sieving it, and then performing a performance test, and adjusting the concrete mix ratio according to the test result. The present invention optimizes the design of its overall preparation process, especially the initial composition and proportion of concrete, and then conducts tests by simulating the environment of on-site pouring, and detects the various technical indicators of the separated concrete again, and according to The test results adjust the mix ratio of the concrete, which can effectively improve the quality of the concrete and ensure that the obtained concrete can meet the performance requirements of the inner leaf load-bearing shear wall concrete and the outer leaf wall concrete during the on-site construction process, which is conducive to ensuring the construction quality .

Description

technical field [0001] The invention relates to the technical field of building material concrete, and more specifically, relates to a preparation and construction method of separated concrete for CCW thermal insulation curtain walls. Background technique [0002] CCW building system (also known as concrete thermal insulation curtain wall system) is a new type of building thermal insulation and structural integration technology. The system is composed of inner load-bearing concrete shear wall, thermal insulation board system products and outer concrete protection layer. The prefabricated insulation board system products (composed of insulation boards, pads and welded steel mesh) are fixed on the shear wall reinforcement without pouring concrete, and then the formwork is supported on both sides of the inner and outer walls of the insulation board, and the concrete is poured separately. The inner load-bearing shear wall and the outer concrete protection layer are poured, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04E04B2/88E04B2/92
CPCC04B28/04E04B2/88E04B2/92C04B2201/50C04B14/02C04B18/08C04B14/06C04B2103/22C04B2103/302
Inventor 何兆芳柳荣芳张峥
Owner CHINA MCC17 GRP
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