Polymer anti-crack mortar and its preparation method and application

An anti-cracking mortar and polymer technology, which is applied in the field of polymer anti-cracking mortar and its preparation, can solve the problems of deteriorating sensory perception and reducing the durability of buildings, etc., and achieve the effect of convenient material acquisition, easy operation, and simple preparation method

Active Publication Date: 2016-12-07
GUANGZHOU UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The criss-cross cracks not only deteriorate the appearance, but also reduce the durability of the building

Method used

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  • Polymer anti-crack mortar and its preparation method and application
  • Polymer anti-crack mortar and its preparation method and application
  • Polymer anti-crack mortar and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The content of each component of the polymer anti-cracking mortar in the present embodiment is as follows:

[0056] P.O 42.5R cement 1000kg; medium sand 2500kg; water 500kg; polypropylene fiber 4.5kg; latex powder 12kg; cellulose ether 3.5kg; wood fiber 5kg; superplasticizer 23kg. Wherein, the medium sand is used after pretreatment, and the pretreatment is to pass through a sieve with a diameter of 2.5 mm to screen out sand particles with a particle diameter greater than 2.5 mm. The high-efficiency water reducer is a naphthalene-based high-efficiency water reducer.

[0057] The preparation process of the polymer anti-cracking mortar is as follows figure 1 As shown, the specific method is: add P.O42.5R cement, latex powder, cellulose ether, and wood fiber to the mixer, and stir evenly; then add medium sand and polypropylene fiber in turn, and stir until the polypropylene fiber is evenly dispersed; add Water and high-efficiency water reducer are stirred into a paste to ...

Embodiment 2

[0059] The content of each component of the polymer anti-cracking mortar in this example is: P.O 42.5R cement 950kg; medium sand 2500kg; water 450kg; polypropylene fiber 4kg; latex powder 8kg; cellulose ether 2kg; wood fiber 8kg; Dosage 15kg. The high-efficiency water reducer is a polycarboxylic acid-based high-performance water reducer. The middle sand pretreatment method is the same as in Example 1. The preparation method and application of the polymer anti-cracking mortar in this example are the same as those in Example 1.

Embodiment 3

[0061] The content of each component of the polymer anti-cracking mortar in this example is: P.O 42.5R cement 850kg; medium sand 2600kg; water 550kg; polypropylene fiber 5kg; latex powder 15kg; cellulose ether 4kg; wood fiber 3kg; Dosage 12kg. The high-efficiency water reducer is a naphthalene-based high-efficiency water reducer. The middle sand pretreatment method is the same as in Example 1. The preparation method and application of the polymer anti-cracking mortar in this example are the same as those in Example 1.

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Abstract

The invention discloses a polymer anti-cracking mortar, and a preparation method and application thereof. The polymer anti-cracking mortar is prepared from the following components in parts by mass: 800-1200 parts of P.O 42.5R cement, 2400-2600 parts of medium sand, 450-550 parts of water, 4-5 parts of polypropylene fiber, 6-18 parts of latex powder, 1-4 parts of cellulose ether, 1-8 parts of wood fiber and 12-23 parts of high efficiency water reducing agent. Various raw materials are added proportionally and sequentially, and stirred to obtain the polymer anti-cracking mortar. When being used for finishing the autoclaved aerated concrete block wall, the polymer anti-cracking mortar can obviously enhance the crack resistance of the autoclaved aerated concrete block wall finishing layer and improve the binding strength between the mortar and wall. The polymer anti-cracking mortar can prolong the setting time of the newly mixed mortar and prolong the operable finishing construction time.

Description

technical field [0001] The invention belongs to the field of civil engineering materials, and in particular relates to a polymer anti-crack mortar and its preparation method and application. Background technique [0002] Autoclaved aerated concrete blocks are widely used as wall materials, which have large volume deformation coefficient and high water absorption. If ordinary mortar is used as the plastering layer, cracks are prone to appear on the wall surface. The criss-cross cracks not only deteriorate the appearance, but also reduce the durability of the building. How to improve the crack resistance of mortar has become one of the focuses of engineers and technicians. High-quality anti-cracking mortar should have the characteristics of high bonding strength, good deformation performance, no falling off, no cracking, no ash joints, anti-rainwater intrusion, high corrosion resistance, impact resistance, and good workability. Improving the quality of buildings is of great...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B14/06C04B16/06
Inventor 焦楚杰
Owner GUANGZHOU UNIVERSITY
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