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Assembly type building component joint gypsum base sealing material and application thereof

A technology of sealing materials and building components, which is applied in the direction of building construction and construction, can solve the problems of large slurry resistance, fluidity loss of sealing slurry, and high requirements for construction equipment, and achieve long operation time, good construction performance, and overcoming cracking effect

Active Publication Date: 2014-01-08
SHANGHAI LIVABLE BUILDING SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The Chinese patent with the application number 201310062233.x discloses the seam sealing material of prefabricated building components and its application. The raw materials used include: cement 100, active admixture 0-150, water reducing agent 0.01-10, early strength Agent 0.01-10, coagulant 0-10, expansion agent 0.1-30, binder 0-30, plasticizer 0.01-30, starch ether 0.01-10, thixotropic lubricant 0-10, quartz sand 0- 300, this kind of joint sealing material has many advantages, but it also has some disadvantages. In order to prevent the cement paste from shrinking and cracking, an expansion agent is added to the paste. This component is easy to cause the fluidity loss of the sealing paste. When When the extrusion method is used for construction, the resistance of the slurry increases, and the requirements for construction equipment are relatively high.

Method used

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  • Assembly type building component joint gypsum base sealing material and application thereof
  • Assembly type building component joint gypsum base sealing material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The gypsum-based sealing material for the splicing joints of prefabricated building components adopts the following components:

[0046] Waste gypsum (dihydrate desulfurized gypsum) 100, active admixture (S95 slag powder) 150, water reducing agent (polycarboxylate superplasticizer) 0.5, activator (sodium metasilicate) 5, binder (vinyl acetate Ester / ethylene copolymer rubber powder) 8, plasticizer (lignocellulose) 2.0, plasticizer (diatomaceous earth) 20, starch ether 1.0, water repellent (silicone powder) 0.5, thixotropic lubricant 0.8, bone Material (quartz sand 10-20 mesh) 80, aggregate (quartz sand 30-60 mesh) 50, aggregate (hydrophobic expanded perlite 1-3mm) 15.

[0047] Preparation method: Weigh various raw materials according to the formula, and add aggregate (quartz sand, expanded perlite), waste gypsum, active admixture (slag powder), and water reducer (polycarboxylate water reducer) to the mixer in sequence , activator (sodium metasilicate), binder (vinyl ace...

Embodiment 2

[0053] The gypsum-based sealing material for the splicing joints of prefabricated building components adopts the following components:

[0054] Waste gypsum (semi-hydrated desulfurization gypsum) 100, active admixture (S95 slag powder) 80, active admixture (silica fume) 10, water reducing agent (naphthalene series superplasticizer) 1.0, activator (calcium hydroxide ) 25, activator (calcium chloride) 5.0, coagulant (sodium polyphosphate) 0.2, binder (redispersible latex powder) 6, air-entraining agent (sodium lauryl sulfate) 0.3, plastic Agent (hydroxyethyl cellulose ether) 2.0, plasticizer (bentonite) 10, starch ether 0.8, thixotropic lubricant 1.0, powdery filler (talc powder) 50, aggregate (quartz sand 10-20 mesh) 30, Aggregate (quartz sand 30-60 mesh) 30, aggregate (vitrified beads) 30.

[0055] Preparation:

[0056] Desulfurized gypsum is pre-dried at 40-60°C, then calcined at 140-180°C to obtain hemihydrate desulfurized gypsum, which is ground and passed through a 200-m...

Embodiment 3

[0061] The gypsum-based sealing material for the splicing joints of prefabricated building components adopts the following components:

[0062]

[0063] Preparation:

[0064] 1. Phosphogypsum is pre-dried at 40-60°C, ground and passed through a 200-mesh sieve for use;

[0065] 2. Weigh various raw materials according to the formula, add aggregate (quartz sand), waste gypsum (phosphogypsum dihydrate), active admixture (slag powder, silica fume), water reducing agent (melamine water reducing agent), activator (calcium oxide), binder (ethylene / vinyl acetate copolymer latex powder), air-entraining agent (triterpene saponin), plastic retainer (methyl hydroxypropyl cellulose ether), hydrophobic Water agent (calcium stearate), modified starch ether and thixotropic lubricant, fully stirred evenly, packaged to form a product.

[0066] The application process is the same as before, wherein the amount of water added is 22% of the weight of the sealing material, and the construction ...

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Abstract

The invention relates to an assembly type building component joint gypsum base sealing material and application thereof. The assembly type building component joint gypsum base sealing material comprises, by weight, 100 parts of waste gypsum, 20-200 parts of active admixture, 0.01-10 parts of water reducer, 0.1-50 parts of excitant, 0-10 parts of thickening control agent, 0-30 parts of binder, 0-10 parts of air entraining agent, 0.01-30 parts of plastic retaining agent, 0.01-10 parts of water repellent, 0-5 parts of starch ether, 0-10 parts of thixotropic lubricant, 0-150 parts of powder filler and 0-300 parts of aggregate, and can be applied to joint sealing after being mixed with water uniformly. Compared with the prior art, the assembly type building component joint gypsum base sealing material has the advantages of convenience in use, good filling ability, high binding power, durability, low cost and the like. In the sealing material, much industrial waste gypsum is used as gelatinization materials, so that performance of sealing mortar can be improved, material cost is reduced, pollution control and emission reduction are facilitated, and a new way for resource utilization of the industrial waste gypsum is provided.

Description

technical field [0001] The invention belongs to the technical field of building materials and building construction, and in particular relates to a gypsum-based sealing material for splicing seams of assembled building components and an application thereof. Background technique [0002] Compared with cast-in-place concrete structures, prefabricated concrete structures have the advantages of reducing on-site wet work, fast construction speed, saving materials, conducive to building industrialization, and good economic and social environmental benefits. Therefore, experts in the engineering field actively advocate the application of prefabricated concrete. structure. [0003] There is no doubt about the unique advantages of prefabricated structures. The problem is how to ensure the performance of the connection between prefabricated components and the overall performance of the structure. The horizontal and vertical joints of the prefabricated large-slab building exterior wal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14E04B1/682
Inventor 杨钱荣匡志平李检保
Owner SHANGHAI LIVABLE BUILDING SCI & TECH CO LTD
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