Gypsum-based sealing material for splicing joints of prefabricated building components and its application

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...

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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.

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