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Machine-sprayed thick-layer polymer repairing mortar and preparation method thereof

A repairing mortar and polymer technology, applied in the field of building materials, can solve the problem that the repairing mortar is difficult to meet the demand, and achieve the effect of wide application range

Inactive Publication Date: 2020-01-03
韶关市第一建筑工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, at present, in repair projects, especially in ancient building repair projects, most of them are large in area, have no shrinkage joints, and are newly made by ancient methods. Therefore, in addition to high requirements for the foundation strength of the repair mortar, the The bonding performance of repair mortar has higher requirements, which makes it difficult for the existing repair mortar to meet the demand, so there is still room for improvement

Method used

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  • Machine-sprayed thick-layer polymer repairing mortar and preparation method thereof
  • Machine-sprayed thick-layer polymer repairing mortar and preparation method thereof
  • Machine-sprayed thick-layer polymer repairing mortar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] A machine-sprayed thick-layer polymer repair mortar, comprising the following components:

[0072] Portland cement 15kg; water 7kg; fly ash 10kg; sand 70kg; nano-silica 12kg; ethylene-vinyl acetate copolymer 3kg; Benzene anthracene 0.75kg.

[0073] In this embodiment, the sand consists of 28kg of continuously graded sand with a particle size of 0.15-0.6mm, 14kg of continuously graded sand with a particle size of 0.6-1.18mm, 14kg of continuously graded sand with a particle size of 1.18-2.36mm, and 14kg of continuously graded sand with a particle size of 0.6-1.18mm. It is made of 2.36-4.75mm continuous graded sand evenly mixed.

[0074] The preparation method of machine-sprayed thick-layer polymer non-repair mortar is as follows:

[0075] S1. In a 150L stirred tank, under normal temperature, stir at a speed of 250r / min. While stirring, add 3.5kg of water, 10kg of fly ash, 70kg of sand and 12kg of nano-silica, and stir evenly to form a premix;

[0076] S2. Add 15 kg of ...

Embodiment 2

[0078] A machine-sprayed thick-layer polymer repair mortar, comprising the following components:

[0079] Portland cement 12.5kg; water 5kg; fly ash 12kg; sand 73.5kg; nano silicon dioxide 10kg; ethylene-vinyl acetate copolymer 4kg; Biphenylanthracene 1kg.

[0080] In this embodiment, the sand consists of 29.4kg of continuously graded sand with a particle size of 0.15-0.6mm, 14.7kg of continuously graded sand with a particle size of 0.6-1.18mm, 14.7kg of continuously graded sand with a particle size of 1.18-2.36mm, and 14.7kg of continuously graded sand with a particle size of 2.36-4.75mm is uniformly mixed.

[0081] The preparation method of machine-sprayed thick-layer polymer non-repair mortar is as follows:

[0082] S1. In a 150L stirring tank, stir at a speed of 250r / min at room temperature, add 2.5kg of water, 12kg of fly ash, 73.5kg of sand and 10kg of nano-silica while stirring, and stir evenly to form a premix ;

[0083] S2. Add 12.5kg of Portland cement, 2.5kg of ...

Embodiment 3

[0085] A machine-sprayed thick-layer polymer repair mortar, comprising the following components:

[0086] Portland cement 10kg; water 6kg; fly ash 8kg; sand 77kg; nano-silica 11kg; ethylene-vinyl acetate copolymer 5kg; Anthracene 0.5kg.

[0087] In this embodiment, the sand consists of 30.8kg of continuously graded sand with a particle size of 0.15-0.6mm, 15.4kg of continuously graded sand with a particle size of 0.6-1.18mm, 15.4kg of continuously graded sand with a particle size of 1.18-2.36mm, and 15.4kg of continuously graded sand with a particle size of 2.36-4.75mm is uniformly mixed.

[0088] The preparation method of machine-sprayed thick-layer polymer non-repair mortar is as follows:

[0089] S1. In a 150L stirred tank, stir at a speed of 250r / min under normal temperature conditions, add 3kg of water, 8kg of fly ash, 77kg of sand and 11kg of nano silicon dioxide while stirring, and stir evenly to form a premixture;

[0090] S2. Add Portland cement 10kg, water 3kg, et...

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Abstract

The invention relates to the field of building materials, and provides machine-sprayed thick-layer polymer repairing mortar to overcome the problem that conventional repairing mortar is difficult to meet repair requirements. The machine-sprayed thick-layer polymer repairing mortar comprises the following components by mass: 10-15 parts of Portland cement, 5-7 parts of water, 8-12 parts of fly ash,70-77 parts of sand, 10-12 parts of nanometer silicon dioxide, 3-5 parts of an ethylene-vinyl acetate copolymer, 1-2 parts of tetraphenyl dibenzodiindenopyrene and 0.5-1 part of 9,10-diphenylanthracene. The preparation method comprises the following steps: S1, adding 1 / 2 of water, fly ash, sand and nanometer silicon dioxide into a reaction container, and carrying out uniform mixing under stirringto form a pre-mixture; and S2, adding the rest components into the pre-mixture while stirring, and carrying out uniform mixing under stirring to obtain the machine-sprayed thick-layer polymer repairing mortar. The compressive strength and the bonding strength of the machine-sprayed thick-layer polymer repairing mortar are improved, so the application range of the machine-sprayed thick-layer polymer repairing mortar is expanded, the repairing mortar is not prone to cracking, frequent repairing is not needed, and energy conservation and environmental protection are achieved.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a machine-sprayed thick-layer polymer repair mortar and a preparation method thereof. Background technique [0002] Repair mortar is a special cement-based polymer mortar used for concrete structure surface defects and reinforcement construction. It has high compressive strength, cohesiveness, crack resistance and water resistance. It can be used in industrial and civil cracked concrete. The surface of the building is repaired, or the industrial and civil buildings that have been damaged and cannot meet the design requirements are repaired. [0003] However, at present, in repair projects, especially in ancient building repair projects, most of them are large in area, have no shrinkage joints, and are newly done by ancient methods. The bonding performance of the repair mortar has higher requirements, which makes it difficult for the existing repair mortar to meet the demand, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B18/08C04B14/06C04B14/062C04B24/00C04B24/26
Inventor 朱敏锐何文石贺灵林李玟菮
Owner 韶关市第一建筑工程有限公司
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