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Dry-mixed mortar, mortar and application thereof

A dry-mixed mortar and powdery technology, which is applied in the application field of adhesives for building exterior wall insulation, can solve the problem that it is difficult to obtain mortar with performance that meets the requirements of use, and achieve the effect of increasing the content and reducing the cost

Inactive Publication Date: 2014-12-31
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although silica-alumina powder industrial waste such as fly ash has been applied to dry mortar, if the content of silica-alumina powder industrial waste in dry mortar is further increased, it is difficult to obtain a mortar whose performance meets the requirements of use.

Method used

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  • Dry-mixed mortar, mortar and application thereof
  • Dry-mixed mortar, mortar and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment is used to illustrate the dry powder mortar and mortar of the present invention and its application.

[0048] Each component cement, fly ash, sand, cellulose ether, redispersible latex powder and lignocellulose in the dry powder mortar are mixed uniformly in the agitator by the ratio that table 2 provides, form mortar, and The mortar is used as a binder to bond and shape the EPS board and the cement mortar board respectively to obtain a bonded body.

[0049] Among them, the cement is Portland cement with a strength grade of 42.5 (commercially purchased from Tangshan Jidong Cement Co., Ltd., China); the CaO content of the fly ash is 10.14% by weight (commercially purchased from Beijing Thermal Power Plant); the sand is river sand (commercially purchased from Beijing Fuwei Huiye Commercial Center, particle size is 0.1-0.4mm); cellulose ether is hydroxyethyl methyl cellulose ether (commercially purchased from South Korea Samsung Chemical Company, the brand ...

Embodiment 2

[0052] This embodiment is used to illustrate the dry powder mortar and mortar of the present invention and its application.

[0053] The bonded body was prepared by the same method as in Example 1, except that the content of each component in the dry powder mortar is shown in Table 2.

[0054] The working time of the prepared dry powder mortar is 1.5-3.5 hours. The tensile bond strength of the prepared bonds was measured, and the results are listed in Table 2.

Embodiment 3

[0056] This embodiment is used to illustrate the dry powder mortar and mortar of the present invention and its application.

[0057] The bonded body was prepared by the same method as in Example 1, except that the content of each component in the dry powder mortar is shown in Table 2.

[0058] The working time of the prepared dry powder mortar is 1.5-3.5 hours. The tensile bond strength of the prepared bonds was measured, and the results are listed in Table 2.

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Abstract

The invention provides a dry-mixed mortar, which contains sialic powdery industrial waste, cement, sand and redispersible latex powder. With the total amount of the sialic powdery industrial waste and cement as the base, the content of the sialic powdery industrial waste is greater than 5 wt% and smaller than 90 wt%, and the CaO content of the sialic powdery industrial waste is greater than 3 wt%. The invention also provides a mortar formed by a mixture of the dry-mixed mortar and water, and application of the mortar as an adhesive for building exterior wall thermal insulation. Under the premise of ensuring the finally formed mortar to have the performance satisfying user requirements, the dry-mixed mortar provided by the invention can further improve the content of sialic powdery industrial waste in the dry-mixed mortar and decrease the content of cement correspondingly, thus effectively lowering the cost of dry-mixed mortar. Also, under the same conditions, the dry-mixed mortar provided by the invention has better performance.

Description

technical field [0001] The invention relates to a dry powder mortar, also relates to a mortar made of the dry powder mortar, and further relates to the application of the mortar as an adhesive for building exterior wall insulation. Background technique [0002] Fly ash is a tiny particle formed during the combustion of fuel (mainly coal), and it is a kind of silica-alumina powder industrial waste. Fly ash is extremely harmful to air pollution and must be removed by dust removal devices. The fly ash recovered from the dedusting unit can be used in construction materials to realize waste utilization. [0003] Dry mix mortar refers to the physical mixing of sand as aggregate, cement as cementing material and additives in a certain proportion to form granular or powdery form, which is transported to the construction site in bag or bulk form, and can be directly mixed with water. Materials used. Dry mix mortar is widely used in the construction industry and decoration industry...

Claims

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Application Information

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IPC IPC(8): C04B28/04E04B1/76
CPCY02A30/244
Inventor 王霞卓锦德李俏董阳
Owner CHNA ENERGY INVESTMENT CORP LTD