Leaking-resistant concrete and construction method thereof

A technology of impermeable concrete and cement, which is applied to tools used in roofing engineering, buildings, roofs, etc., can solve the problems of long-term crack prevention and impermeability of the roof structure, and improve the comprehensive waterproof function and impermeability , low cost effect

Inactive Publication Date: 2019-04-05
JILIN PROVINCE JIANYUAN DESIGN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the particularity of the roof structure, it needs to withstand summer exposure, winter freezing, rain and snow erosion, solar radiation and other damages. At present, this kind of marine durable concrete structure still cannot meet the special requirements of long-term crack resistance and impermeability of the roof structure.

Method used

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  • Leaking-resistant concrete and construction method thereof
  • Leaking-resistant concrete and construction method thereof

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preparation example Construction

[0034]In the present invention, the air-entraining agent is preferably rosin or rosin condensation polymer. The preparation method of the rosin polycondensate of the present invention preferably comprises: rosin and lignin are heated and melted and mixed homogeneously, and isomerized to obtain an isomerized product A; to the isomerized product A, maleic anhydride or maleic anhydride and Concentrated sulfuric acid is polycondensed to obtain synthetic resin B; polyethylene glycol is added to resin B, and glycerol and / or concentrated sulfuric acid is added to graft esterification to obtain esterification product C; foam stabilization is added to esterification product C Components, heat preservation reaction; cooling, alkali solution neutralization, controlling pH = 8-13, heat preservation reaction, adding tap water dropwise, making the solid content 30±1%, and preparing the air-entraining agent of rosin condensation polymer. The rosin condensation polymer air-entraining agent pr...

Embodiment 1

[0053] A kind of anti-seepage concrete, its raw material comprises the composition of following weight part: 100 parts of cement, 330 parts of coarse aggregate, 250 parts of fine aggregate, 65 parts of fly ash, 30 parts of admixture (6 parts of air-entraining agent, anti-seepage 6 parts of fiber, 6 parts of swelling agent, 6 parts of water reducing agent, 6 parts of waterproofing agent), 55 parts of water; the specific raw materials of this embodiment are shown in Table 1.

[0054] The construction method of above-mentioned anti-seepage concrete comprises the steps:

[0055] Mix cement, coarse aggregate, fine aggregate, and fly ash with water; add air-entraining agent, anti-seepage fiber, expansion agent, water-reducing agent, and water-repellent in sequence and mix evenly to obtain impermeable concrete; pour the impermeable concrete into For the roof with steel structure, the large-area base and roof are poured in groups, and the pool wall is poured continuously in layers; af...

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Abstract

The invention provides leaking-resistant concrete. A construction raw material of the leaking-resistant concrete comprises, by weight, 90-110 parts of cement, 300-360 parts of coarse aggregates, 230-270 parts of fine aggregates, 50-80 parts of fly ash, 20-40 parts of additives and 50-60 parts of water. The additives comprise air entraining agents, leaking-resistant fibers, expanding agents, waterreducing agents and waterproof agents. The total alkali content of the leaking-resistant concrete is smaller than 2.25kg/m<3>, the raw material is simple, and the concrete is convenient to construct.Inner gap structures of the concrete are changed by the air entraining agents, a capillary channel is cut off, the leaking-resistant fibers have crack-resistant effects on gaps, and the brittleness ofthe concrete is reduced. The leaking-resistant concrete is used for construction of a roof structure, the leaking-resistant strength of the leaking-resistant concrete is far higher than that of common concrete after the leaking-resistant concrete is stirred, poured, vibrated and maintained, water seepage and water leakage of the leaking-resistant concrete are omitted through 14-day testing, and the leaking-resistant concrete is higher in weather resistance and cannot easily crack.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to an anti-seepage concrete and a construction method thereof. Background technique [0002] The roof is the uppermost protective component and load-bearing structure of the building, and its waterproof performance is closely related to the quality of the building, the safety and comfort of the occupants. However, there are relatively serious roof waterproofing problems in most housing constructions at present, and leakage occurs from time to time, which seriously affects the construction quality and the interests of the occupants. Some old roof structures are composed of a load-bearing layer and a waterproof layer. Prefabricated hollow slabs are used as the load-bearing layer, and then the membrane waterproof layer is laid on the prefabricated hollow slab. This kind of roof structure is inevitably weak in parapets and gutter edges. There is a leak at the link. A particularly ser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E04D15/07C04B111/27
CPCE04D15/07C04B28/04C04B2111/27C04B14/02C04B14/06C04B18/08C04B24/34C04B16/0633C04B22/148C04B22/06C04B24/24
Inventor 李世佳
Owner JILIN PROVINCE JIANYUAN DESIGN GRP
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