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Waterproof repair mortar for building wall and preparation method thereof

A repairing mortar and waterproof technology, which is applied in the field of building materials to achieve good water resistance, improve waterproof performance, and improve bonding performance

Active Publication Date: 2022-02-22
临海市忠信新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many repair mortars at present, with the complexity of the parts to be repaired and the diversification of structures, there is an urgent need for waterproof repair materials to make up for it.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A waterproof repair mortar for building walls, comprising the following components by weight: 7 parts of microcapsule hydrophobic material, 35 parts of cement, 42 parts of quartz sand, 8 parts of acrylic rubber powder, and hydroxyl 3 parts of propyl methylcellulose, 5 parts of polycarboxylate superplasticizer.

[0018] Among them, the hydrophobic material of the microcapsules is the hydrophobic material of the microcapsules coated with silicon dioxide, the core layer is silicone water-repellent agent and dispersant, the mass ratio of the two is 1:2, and the shell layer is silicon dioxide. The base polymer is a network polymer, and the mass ratio of the core layer to the shell layer is 1:2.

[0019] A method for preparing waterproof repair mortar for building walls, comprising the following steps: (1) mixing epoxy resin and tetraethyl orthosilicate evenly at a mass ratio of 2:1, and mixing them with polyether with a concentration of 2% Mix the aqueous solution of non-io...

Embodiment 2

[0021] A kind of waterproof type repairing mortar for building walls, by weight, comprising the following components: 5 parts of microcapsule hydrophobic material, 44 parts of cement, 44 parts of quartz sand, 5 parts of ethylene-vinyl acetate copolymer, and a viscosity of 100000m .Pa 1 part of hydroxyethyl methylcellulose, 1 part of polycarboxylate superplasticizer.

[0022] Among them, the microcapsule hydrophobic material is a microcapsule hydrophobic material coated with silica, its core layer is a silicone water repellent and a dispersant, the mass ratio of the two is 1:2, and the shell layer is a silica-based The polymer-based network polymer, the mass ratio of the core layer to the shell layer is 1:2.

[0023] The specific preparation method of the repair mortar of this embodiment is the same as that of Embodiment 1.

Embodiment 3

[0025] The invention relates to a waterproof repair mortar for building walls, which comprises the following components by weight: . 5 parts of microcapsule hydrophobic material, 35 parts of cement, 45 parts of quartz sand, 7 parts of ethylene-vinyl acetate copolymer, 3 parts of hydroxypropyl methylcellulose with a viscosity of 75000m.Pa, 5 parts of polycarboxylic acid superplasticizer share.

[0026] Among them, the microcapsule hydrophobic material is a microcapsule hydrophobic material coated with silica, its core layer is a silicone water repellent and a dispersant, the mass ratio of the two is 1:2, and the shell layer is a silica-based The polymer-based network polymer, the mass ratio of the core layer to the shell layer is 1:2.

[0027] The specific preparation method of the repair mortar of this embodiment is the same as that of Embodiment 1.

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PUM

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Abstract

The present invention is a kind of waterproof repair mortar for building wall and its preparation method, which comprises the following components by weight: 2-10 parts of microcapsule hydrophobic material coated with silicon dioxide, 35-55 parts of cement, and 35 parts of quartz sand. ‑50 parts, 5‑8 parts of latex powder, 1‑3 parts of water-retaining thickening material, 0.5‑5 parts of water reducing agent; among them, the core layer of silica-coated microcapsule hydrophobic material is organosilicon hydrophobic Agent and dispersant, the mass ratio of the two is 1:2-3.5, the shell layer is a silica-based polymer-based network polymer, and the mass ratio of the core layer to the shell layer is 1:2-5. The invention also discloses a preparation method of the repair mortar. The repairing mortar prepared by adopting the formula and the preparation method of the invention has good water resistance, excellent penetration resistance, high tensile bonding strength, good water retention performance and no bleeding phenomenon.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a waterproof repair mortar for building walls and a preparation method thereof. Background technique [0002] In recent years, the problems of concrete spalling, cracking, damage and corrosion of steel bars on the surface of buildings have attracted increasing attention, which not only affects the appearance of buildings, but even endangers the normal use and safe service of buildings, and repairs are urgently needed. For this reason, the selection of materials suitable for building repairs is of great significance for protecting buildings, prolonging their service life and reducing maintenance costs. According to different damage problems of buildings, corresponding repair materials should be used, and some performance requirements are different according to different application occasions and engineering parts. Although there are many repair mortars at p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B111/27
CPCC04B28/00C04B2111/27C04B2201/50
Inventor 范树景李超
Owner 临海市忠信新型建材有限公司
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