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Special masonry mortar for aerated concrete and construction method thereof

A technology of masonry mortar and construction method, which is applied in the field of construction, can solve the problems of different thermal conductivity, etc., and achieve the effects of improving early strength, good thermal insulation effect, and delaying the initial setting time

Inactive Publication Date: 2008-07-23
GESHAN CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In fact, the mortar used in the prior art for air-entrained concrete is not only different in thermal conductivity than the external wall insulation mortar, especially the mortar for horizontal masonry joints, which has to bear the pressure of the self-weight of the air-entrained concrete. When the self-weight of the air concrete is pressed, a tight cement mortar seam is formed. If there is no gap in this seam, there is no condition for heat resistance. In fact, it becomes ordinary mortar, which also becomes a heat conduction thermal bridge

Method used

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  • Special masonry mortar for aerated concrete and construction method thereof
  • Special masonry mortar for aerated concrete and construction method thereof
  • Special masonry mortar for aerated concrete and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] In every 1000 parts of special masonry mortar for aerated concrete, the parts by weight of each component are: in every 1000 parts of mortar, the parts by weight of each component are: cement 210, gypsum 50, quicklime 180, fly ash 558.5, aluminum powder Paste 0.10, retarder 0.40, methylcellulose 1.0.

[0040] Among them, the physical performance requirements of fly ash are: 88 micron sieve allowance ≤ 15%, specific gravity ≤ 2.1, density ≤ 640kg / m 3 , Loss on ignition ≤ 15%. The physical performance requirements of cement are: label: 425#, loose density 1000-1300kg / m 3 , Compressive strength 7d 42.5Mpa, flexural strength 28d6.5Mpa, fineness 88 micron sieve allowance ≤ 10%, specific surface area ≥ 3000cm2 / g, initial setting time ≥ 45min, final setting time ≤ 10h.

[0041] Referring to Fig. 5 and Fig. 6, this embodiment provides a construction method for the above-mentioned special masonry mortar for aerated concrete, including the following steps:

[0042] a. Measure ...

Embodiment 2

[0049] In every 1000 parts of special masonry mortar for aerated concrete, the parts by weight of each component are: cement 180, gypsum 50, quicklime 138.6, fly ash 630, aluminum powder paste 0.07, retarder 0.33, methyl cellulose 1.0 weight share.

[0050]Wherein, the physical performance requirements of fly ash and cement are the same as those in Example 1.

[0051] Referring to Fig. 5 and Fig. 6, this embodiment provides another technical solution of the construction method of the above-mentioned special masonry mortar for aerated concrete: including the following steps:

[0052] a. Measure various raw materials according to the formula;

[0053] b. Stir according to the ratio of 1000 kg of mortar and 515 kg of water;

[0054] d. Construction grout, the thickness of mortar 4 is 14mm, as shown in Figure 5;

[0055] d. Sprinkle fly ash ceramsite evenly around the surface of mortar 4 .

[0056] After the above steps are completed, the aerated concrete can be built. The fly...

Embodiment 3

[0059] In every 1000 parts of special masonry mortar for aerated concrete, the parts by weight of each component are: cement 250, gypsum 62, quicklime 136.18, fly ash 550, aluminum powder paste 0.12, retarder 0.5, methyl cellulose 1.2 weight share.

[0060] Wherein, the physical performance requirements of fly ash and cement are the same as those in Example 1.

[0061] The construction method of special masonry mortar for air-entrained concrete can adopt one of Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a masonry mortar specific to aerated concrete. Each component accounts for weight portions in per 1,000 portion of mortar: 180-250 of cement, 40-62 of gypsum, 120-220 of quick lime, 550-630 of fly ash, 0.07-0.12 of aluminum paste, 0.3-0.5 of retarder. The fly ash ceramisite is blended with the mortar as well. The invention also provides a construction method for masonry mortar specific to the aerated concrete, the steps are that: a. each raw material is measured by the formula; b. then the raw material is stirred by ratio of 1,000 kg of mortar to 515 kg of water; c. 3 to 4.2 percent of the fly ash ceramisite is blended to stir; d. 13 to 15 mm of construction and pulp distribution is made. As the invention has the same heat resistance effect as the aerated concrete, the problem of the heat loss caused by the heat bridge formed by common mortar, which needs to be settled urgently, is resolved.

Description

technical field [0001] The invention relates to the field of construction, in particular, the invention relates to a special masonry mortar for air-entrained concrete and its construction method Background technique [0002] Air-entrained concrete (fly ash aerated concrete) is currently the mainstream wall building material in the construction market. Because of its light weight, large volume, energy saving and environmental protection, it has become the first choice of current users. However, the mortar for masonry air-entrained concrete is commonly used as ordinary mortar, and ordinary mortar has no heat insulation function. Air-entrained concrete is a good thermal insulation material, and its thermal conductivity is about 0.15w (m*k), but the thermal conductivity of ordinary mortar is above 1.2w (m.k). Building air-entrained concrete with ordinary mortar actually forms a very dense thermal bridge network. This greatly reduces the thermal insulation effect of air-entrain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B18/08C04B22/04C04B24/38
CPCC04B28/14C04B2111/00646C04B2111/28Y02W30/91C04B7/02C04B14/12C04B18/08C04B22/04C04B22/064C04B24/383C04B38/02C04B40/0028C04B2103/22
Inventor 季学宏
Owner GESHAN CONSTR GROUP
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