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Non-cracking building mortar

A mortar and construction technology, which is applied in the field of non-cracking mortar for masonry or plastering of interior and exterior walls of buildings and its preparation, can solve the problems of insufficient bonding strength, low water absorption rate of masonry, easy occurrence of stepped cracks, etc. performance and water retention, high bond strength and crack resistance, construction and quality assurance

Inactive Publication Date: 2007-04-04
HAINAN RUIZE NEW BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second is to use traditional cement mortar or mixed mortar with large shrinkage, low bonding strength and unreasonable matching
Therefore, from the perspective of strength matching, it is not reasonable, and the bond strength between the wall block and the mortar is seriously insufficient
On the other hand, the shrinkage of the block itself is larger than that of the clay brick, and the water absorption rate of the masonry is smaller than that of the brick, and the shrinkage of the mortar itself is large, so the block building is prone to step cracks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0028] Weigh out each raw material according to the mass parts of the given components in Table 1, and then stir it for 3 minutes to form a premixed non-cracking building mortar.

[0029] Wherein the cement used in embodiment 1 is Portland cement with strength not lower than 42.5; Mineral admixture is limestone powder with fineness below 100 mesh; Cellulose ether is hydroxyethyl methyl cellulose; Organic fiber is polypropylene Fiber, single filament length 12mm.

Embodiment 2

[0030] The cement used in Example 2 is Portland cement with a strength not lower than 42.5; the mineral admixture is fly ash with a fineness below 100 mesh, and the cellulose ether is methyl cellulose; the organic fiber is polypropylene fiber, and the single The wire length is 12 mm.

Embodiment 3

[0031] The cement used in embodiment 3 is pozzolanic Portland cement with strength not lower than 42.5; the mineral admixture is the slag of fineness purpose, and the cellulose ether is hydroxyethyl methyl cellulose; the organic fiber is polypropylene fiber, monofilament Length 12mm.

[0032] The non-cracking building mortar is added with mixing water before construction, and it can be used after stirring for 2 minutes.

[0033] Component

[0034] The main performance parameters of the premixed non-cracking building mortar obtained in each embodiment after being mixed with water are shown in Table 2.

[0035]

[0036] It can be seen from Table 2 that the non-cracking building mortar of the present invention can completely prevent cracking, and has a higher bonding force with wall materials or other substrates after hardening.

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PUM

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Abstract

Masonry or finishing non-cracking mortar for internal and external walls and its production are disclosed. The non-cracking mortar consists of cement 20-35wt%, mineral admixture 2-20wt%, building sand 60-75wt%, cellulose ether 0.02-0.2wt% and organic fibre 0.1-0.2wt%. It has excellent water-retaining property and cohesion and fast construction-speed, it can be used for different wall masonry and finishing.

Description

technical field [0001] The invention relates to a non-cracking mortar for construction engineering, in particular to the field of a non-cracking mortar for building interior and exterior walls or plastering and a preparation method thereof. Background technique [0002] For wall materials used in construction projects, whether it is a load-bearing wall or a filling wall in a frame structure, there are generally serious wall cracking and leakage problems, which seriously affect the quality of the project and normal use. To control the cracking of the wall, structural measures are mainly used at present, but the effect is not ideal; and the external wall leakage problem is mainly used waterproof coating and other methods, not only the cost is high, but once the external wall cracks, the waterproof coating cannot solve the problem. question. It can be said that there are still no effective measures to control the cracking and leakage problems in the application of wall materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/06C04B16/06C04B24/02C04B24/38
Inventor 王培铭蒋正武
Owner HAINAN RUIZE NEW BUILDING MATERIAL