Thermal insulation mortar

A technology of thermal insulation mortar and mortar, which is applied in the field of construction engineering, can solve the problems of poor frost resistance, low strength, and long construction period, and achieve the effects of good thermal insulation performance, good volume stability, and long service life

Inactive Publication Date: 2011-04-13
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN101148342A "Crack Resistant and Waterproof Polystyrene Particle Thermal Insulation Slurry", in view of the lack of easy cracking and durability of thermal insulation mortar, it is proposed to use infrared reflective material, polypropylene short fiber and polymer emulsion to modify, and the prepared thermal insulation material has High adhesion, no cracking and deformation, strong anti-leakage ability, etc., but compared with other thermal insulation mortar materials, its price is more expensive and the construction period is longer
Chinese patent CN101229969A "rubber powder polystyrene particle thermal insulation mortar" uses cement, mineral additives, air-entraining agent, thickener and polystyrene foam particles and mortar to prepare thermal insulation mortar. This patented product can be well formed with the wall A whole, but its drying shrinkage is relatively large, which cannot be solved well
Chinese patent CN101032841A "Single-component dry-mixed thermal insulation mortar and its production method" discloses a bu

Method used

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  • Thermal insulation mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: The components of the thermal insulation mortar in this example and their percentages by weight are: 38% of bischofite partial pyrolysis light-burned magnesia, 12.0% of dry fly ash, 14.3% of coagulation regulator, enhanced thickening 9.6% additive, 4.8% diatomite, 14.3% closed-cell expanded perlite, 1.9% polystyrene foam particles, 0.1% polypropylene fiber, 4.0% water-resistant admixture, and 1.0% water-reducing agent;

[0024] Among them: the coagulation regulator is anhydrous magnesium chloride, the reinforcing thickener is magnesium carbonate, the diatomite is the original diatomite powder, the water-resistant additive is sodium metaphosphate, and the water reducing agent is commercially available calcium lignosulfonate; The particle size of styrene foam particles is 0.5mm~5.0mm; the length of polypropylene fiber is 3mm~20mm, and the diameter is 10um~50um;

[0025] Preparation method: weigh each component according to the above weight percentage, fully mix...

Embodiment 2

[0027] Example 2: The components of the thermal insulation mortar in this example and their weight percentages are: bischofite-pyrolytic method light-burned magnesium oxide 20.0%, dry fly ash 24.9%, coagulation regulator 5.0%, enhanced thickening 12.0% additive, 2.0% diatomaceous earth, 34.9% open-cell expanded perlite, 0.45% polystyrene foam particles, 0.05% polypropylene fiber, 0.5% water-resistant admixture, and 0.2% water-reducing agent;

[0028] Among them: the coagulation agent is anhydrous magnesium sulfate, the thickening agent is magnesium silicate, the diatomite is calcined diatomite powder, and the anti-water additive is sodium dihydrogen phosphate and ferrous sulfate according to the ratio of 1:4 (weight). The water reducer is a naphthalene-based high-efficiency water reducer; the particle size of polystyrene foam particles is 0.5mm to 5.0mm; the length of polypropylene fibers is 3mm to 20mm, and the diameter is 10um to 50um;

[0029] The method of preparation and ...

Embodiment 3

[0030] Example 3: The components of the thermal insulation mortar in this example and their weight percentages are: 33.6% of calcined magnesite light-burned magnesia, 9.6% of dry fly ash, 24.0% of coagulation regulator, and 19.2% of reinforcing thickener , diatomite 1.9%, closed-cell expanded vermiculite 5.0%, polystyrene foam particles 1.9%, polypropylene fiber 0.2%, water-resistant admixture 2.7%, water-reducing agent 1.9%;

[0031] Among them: the coagulation agent is a mixture of magnesium chloride hexahydrate and anhydrous magnesium sulfate at a ratio of 1:1 (by weight), the reinforcing thickener is a mixture of magnesium carbonate and magnesium silicate at a ratio of 1:2 (by weight), and diatomaceous earth is calcined Diatomaceous earth powder, the anti-water additive is a mixture of calcium phosphate, gypsum and silica fume at a ratio of 1:2:4 (by weight), and the water reducing agent is calcium lignosulfonate and naphthalene-based high-efficiency water reducer at a rati...

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Abstract

The invention discloses thermal insulation mortar which comprises the following components in percentage by weight: 20 to 60 percent of caustic calcined magnesia, 1 to 25 percent of fly ash, 5 to 35 percent of thickening time control agent, 0 to 40 percent of enhanced thickener, 1 to 20 percent of kieselguhr, 5 to 35 percent of expanded aggregate, 0 to 5 percent of polystyrene foam particles, 0 to 0.2 percent of polypropylene fiber, 0.5 to 8 percent of water-resisting admixture, and 0 to 2 percent of water reducing agent. The thermal insulation mortar has the characteristics of capability of coagulating and hardening quickly and having strong binding capacity with base materials, good volume stability, capability of producing volume micro-expansion in the process of coagulating and hardening, no crack, no splitting, strong water resistance, ageing resistance, long service life, light weight, and good heat preservation and heat insulation performance, wherein the coefficient of thermal conductivity is 0.05 to 0.30 W/m.k. The thermal insulation mortar has the advantages of no toxicity, odourlessness, zero radioactivity, no harm to human bodies, no pollution to environments, energy conservation, environmental friendliness and low production cost.

Description

technical field [0001] The invention relates to a mortar in the technical field of construction engineering, in particular to a thermal insulation mortar used for exterior walls. Background technique [0002] At present, the country is vigorously developing and promoting environmental protection and energy-saving building structures. The implementation of building energy conservation must greatly improve the thermal performance of maintenance structures, especially external walls. Generally speaking, there are two main energy-saving methods for building maintenance structures: one is to directly select the thermal insulation wall structure; the other is to apply a layer of thermal insulation mortar on the outer layer of the wall. In comparison, the outer layer of the wall is painted with thermal insulation mortar, and the construction is simple, especially for the existing building structure, its advantages are more obvious. Therefore, the method that building exterior wal...

Claims

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Application Information

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IPC IPC(8): C04B28/30
CPCC04B28/105Y02W30/91C04B14/08C04B16/0633C04B16/08C04B18/027C04B18/08C04B2103/302C04B2103/44C04B2103/65
Inventor 余红发胡振华李颖
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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