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Preparation method and application of special adhesive mortar material for foam glass external thermal insulation system

A technology for bonding mortar and thermal insulation system, applied in thermal insulation, climate change adaptation, building components, etc., can solve the problems of lack of high elasticity, shedding, substandard, etc. The effect of the compression ratio

Inactive Publication Date: 2020-10-09
SHANGHAI UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some problems appeared in the application, the most important of which is the hollowing, cracking and falling off of the foam glass external wall insulation system. The reason is that the performance of the bonding mortar is not up to standard and does not match the foam glass.
Foam glass is an inorganic material, which is a brittle material and does not have the high elasticity of organic thermal insulation materials. Therefore, the bonding mortar of foam glass should match the characteristics of foam glass, and the research on its special bonding mortar is still relatively limited. Rarely, the mortar used in construction is mostly mixed on site, and its performance is unstable or even substandard. When used in high-rise buildings, the adhesive layer of foam glass insulation board must be able to withstand years of wind and rain erosion and temperature changes and remain firm all the time. Otherwise, even if individual Facing bricks fall and hurt people, the consequences are disastrous
Therefore, traditional ordinary mortar is difficult to meet the requirements of engineering construction quality, durability and construction efficiency, which restricts the development of foam glass insulation system to the field of civil construction

Method used

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  • Preparation method and application of special adhesive mortar material for foam glass external thermal insulation system
  • Preparation method and application of special adhesive mortar material for foam glass external thermal insulation system
  • Preparation method and application of special adhesive mortar material for foam glass external thermal insulation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In this embodiment, a special bonded mortar material for foam glass external thermal insulation system is prepared by using the following proportioning raw materials:

[0049] P.O4.25 cement 34kg;

[0050] Fly ash 4kg;

[0051] Silica fume 2kg;

[0052] Medium sand 60kg;

[0053] Redispersible latex powder 2.5kg;

[0054] Hydroxypropyl methylcellulose 0.18kg;

[0055] Polypropylene fiber 0.2kg;

[0056] Defoamer 0.1kg;

[0057] Water reducer 0.1kg.

[0058] In this embodiment, P.O4.25 cement is Yangchun Shanshui brand, which is the main cementitious material of the bonded mortar. Fly ash is a secondary fly ash which has a pozzolanic activity which will contribute more to the mortar than alkali consumption. The average particle size of silica fume is 0.1-0.3 microns, and it has a large specific surface area, which plays a positive role in the water retention performance of mortar.

[0059]The dispersible latex powder is water-redispersible vinyl acetate / ethylene...

Embodiment 2

[0078] This embodiment is basically the same as Embodiment 1, especially in that:

[0079] In this embodiment, a preparation method of special adhesive mortar for foam glass external thermal insulation system adopts the following preparation steps:

[0080] (1) Take raw material according to the quality of raw material in the embodiment, weighing accuracy ± 0.5%;

[0081] (2) Add the weighed cement, sand, fly ash and silica fume into the mixer, the amount of stirring is 30% to 70% of the capacity of the mixer, mix and stir for 5 minutes, and the stirring rate is 120r / min;

[0082] (3) Add hydroxypropyl methylcellulose ether, redispersible latex powder, polypropylene fiber, water reducer, defoamer, and then continue to stir for 10 minutes at a stirring rate of 120r / min;

[0083] (4) The stirred material is sealed and waterproofed.

[0084] The adhesive mortar prepared in this example should be mixed with water at the construction site. The amount of water used for mixing shou...

Embodiment 3

[0087] In this embodiment, a special bonded mortar material for foam glass external thermal insulation system is prepared by using the following proportioning raw materials:

[0088] P.O4.25 cement 34kg;

[0089] Fly ash 4kg;

[0090] Silica fume 2kg;

[0091] Medium sand 60kg;

[0092] Redispersible latex powder 2.5kg;

[0093] Hydroxypropyl methylcellulose 0.06kg;

[0094] Polypropylene fiber 0.25kg;

[0095] Defoamer 0.1kg;

[0096] Water reducer 0.1kg;.

[0097] In this embodiment, P.O4.25 cement is Yangchun Shanshui brand, which is the main cementitious material of the bonded mortar. Fly ash is a secondary fly ash which has a pozzolanic activity which will contribute more to the mortar than alkali consumption. The average particle size of silica fume is 0.1-0.3 microns, and it has a large specific surface area, which plays a positive role in the water retention performance of mortar.

[0098] The dispersible latex powder is water-redispersible vinyl acetate / ethyl...

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Abstract

The invention discloses a special adhesive mortar material for a foam glass thermal insulation system and a preparation method and application thereof. The adhesive mortar is prepared from the following raw materials in percentage by mass 25%-50% of P.O 4.25 cement, 1%-10% of fly ash, 1%-5% of silica fume, 48%-60% of medium sand, 1.5%-3% of redispersible latex powder, 0.03%-0.18% of hydroxypropylmethyl cellulose, 0.15%-0.25% of polypropylene fiber, 0-0.1% of a defoaming agent and 0-0.1% of a water reducing agent. The adhesive mortar has high flexibility and damage resistance, has higher bonding strength, higher flexibility, higher damage resistance and higher weather resistance compared with traditional mortar, and has the advantages of being easy to construct and the like.

Description

technical field [0001] The invention relates to a mortar material or building material and its preparation method and application, in particular to an exterior wall thermal insulation material, its preparation method and application, which are applied in the technical field of polymer mortar and adhesive mortar. Background technique [0002] Foam glass, also known as porous glass, is made of waste glass, fly ash, mica, perlite, pumice powder, volcanic ash, etc. It is a lightweight inorganic porous glassy material produced by preheating, sintering, foaming, cooling, annealing and other processes. The interior of the foam glass is filled with a large number of tiny and uniform pores, forming a uniform gas-solid dual-phase structure. Foam glass has the advantages of low density, low thermal conductivity, low thermal expansion coefficient, stable thermal performance, corrosion resistance, non-combustibility, long service life and convenient construction. Anti-corrosion, mildew...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E04B1/76
CPCC04B28/04C04B2201/10E04B1/76C04B18/08C04B18/146C04B14/06C04B24/2623C04B24/383C04B16/0633C04B24/42C04B2103/302Y02A30/244
Inventor 谢建军郝鹏丁晓琴许勇根施鹰
Owner SHANGHAI UNIV
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