Rebar grouting connecting element sealing materials and preparation method and application thereof

A sealing material and grouting connection technology, which is applied in the processing of building components, building materials, structural elements, etc., can solve the problems of economic loss, cumbersome construction, poor adhesion, etc., and achieve long operating time, fast and efficient construction, Strong anti-deformation effect

Active Publication Date: 2013-06-19
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the grouting of steel sleeves connecting vertical components (walls or columns), the common grouting process is the grouting process. When installing prefabricated wall panels and columns, place gaskets below to raise the height, leaving 20-40mm overhead height for grouting It is technically difficult to seal the mold of the seat slurry. The existing method is to pre-paste rubber waterstop strips around the lower part of the vertical component. After hoisting, due to the extrusion of the upper and lower components, the rubber strip forms a sealing ring. , and put a layer of sealant on the outside of the water-stop strip. This method is not only cumbersome to construct, but also the rubber strip is easy to be displaced d

Method used

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  • Rebar grouting connecting element sealing materials and preparation method and application thereof
  • Rebar grouting connecting element sealing materials and preparation method and application thereof
  • Rebar grouting connecting element sealing materials and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075]

[0076] Preparation method: Weigh various raw materials according to the formula, add quartz sand, powdery filler (ash calcium powder), cement (P.O 42.5 ordinary Portland cement), active admixture (fly ash), reducing Water agent (naphthalene-based high-efficiency water reducer), early strength agent (calcium formate), expansion agent (UEA expansion agent), binder (ethylene / vinyl acetate latex powder), plastic retainer (bentonite, methyl hydroxyethyl base cellulose ether), starch ether, fully stirred evenly, and packaged to form a product.

[0077] The construction method is as mentioned above, wherein the amount of water added is 15% of the weight of the sealing material.

[0078] The sealing material prepared from the above components according to the aforementioned process has the characteristics of long operating time, high strength, strong cohesive force and good plasticity, and is suitable for construction in summer.

Embodiment 2

[0080]

[0081]

[0082] Preparation method: Weigh various raw materials according to the formula, and add quartz sand, powder filler (calcium carbonate powder), cement (Portland cement), active admixture (silica fume), water reducing agent (polycarboxylate) into the mixer in sequence Acid superplasticizer), early strength agent (anhydrous sodium sulfate), expansion agent (UEA expansion agent), binder (polyvinyl alcohol), plastic retainer (bentonite, methyl cellulose), modified starch ether, Stir fully and evenly, and pack to form the product.

[0083] The construction method is as mentioned above, wherein the amount of water added is 20% of the weight of the sealing material.

[0084] The sealing material prepared from the above components according to the aforementioned process has the characteristics of moderate setting time, high strength, strong cohesive force and good plasticity, and is suitable for construction in spring and autumn.

Embodiment 3

[0086]

[0087]

[0088] Preparation method: Weigh various raw materials according to the formula, and add quartz sand, powdery filler (talc powder), cement (aluminate cement), active admixture (silica fume, slag powder), and water reducer to the mixer in sequence (melamine superplasticizer), early strength agent (calcium formate), expansion agent (ZY expansion agent), binder (vinyl acetate homopolymer powder), plastic retainer (diatomaceous earth, carboxymethyl cellulose) , starch ether, fully stirred evenly, and packaged to form a product.

[0089] The construction method is as mentioned above, wherein the amount of water added is 16% of the weight of the sealing material.

[0090] The sealing material prepared from the above components according to the aforementioned process has the characteristics of short setting time, high early strength, strong cohesive force and good plasticity, and is suitable for winter construction and occasions where the construction period o...

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Abstract

The invention relates to rebar grouting connecting element sealing materials, and a preparation method and application thereof. The materials are prepared by the following raw materials, by weight, 100 parts of cement, 0-80 parts of activity admixtures, 0.01-10 parts of water reducing agents, 0.01-10 parts of early strength agents, 0.01-30 parts of expanding agents, 0-30 parts of adhesion agents, 0.01-50 parts of plastic retaining agents, 0.01-10 parts of starch ether, 0-100 parts of powder stuffing and 10-300 parts of quartz sand. The sealing materials are prepared through stirring and blending and can be used for sealing process before rebar grouting connection. Compared with the prior art, the sealing materials are good in plasticity, adhesive power and drop smoothness resistance, slurry does not contract, and defects that cracking, water seepage, dropping off and the like are easily generated due to the fact that common cement mortar is used for sealing are overcome. The sealing materials have excellent construction performance, and can be applied to quick extrusion and jetting construction of a caulking gun or a power-driven caulking device. After the sealing materials are adopted to carry out a sealing process, rebar connecting grouting construction can be carried out after one day, and construction efficiency can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of building materials and building construction, and in particular relates to a sealing material for steel bar grouting connection components, a preparation method and application thereof. Background technique [0002] Construction industrialization is an inevitable development trend of the construction industry. Prefabricated buildings will become the main form of architectural design and construction in the near future with many advantages such as fast construction speed, less restriction by climatic conditions, labor saving and improvement of construction quality. The structure of prefabricated concrete mainly adopts prefabricated components. Prefabricated component reinforcement connection is one of the key technologies in the design and construction of prefabricated buildings. In traditional cast-in-place concrete structures, the connection of reinforcement is mostly by lap connection, welding connectio...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B28/06C04B28/00C04B18/08C04B18/04C04B18/30E04G21/12E04C5/20
CPCY02W30/91
Inventor 杨钱荣
Owner TONGJI UNIV
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