Inorganic lightweight aggregate thermal mortar for steel structure

A technology of inorganic light aggregate and thermal insulation mortar, which is applied in the field of building materials, can solve the problems of poor fireproof performance of steel structures and high requirements for fireproof performance of enclosure structures, and achieve improved construction performance, construction performance and water retention performance, and improved and easy installation. sexual effect

Inactive Publication Date: 2018-09-28
HANGXIAO STEEL STRUCTURE
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Problems solved by technology

[0003] Although steel structure residences are recognized as a structural system that is environmentally friendly and adaptable to the development of housing industrialization, since the thermal conductivity of steel itself is more than 40 times higher than that of concrete, heat preservation and energy saving are a serious problem facing steel structure residences; secondly, steel The fireproof performance of the structure is poor, and the fireproof performance of its enclosure structure is high
Therefore, compared with the traditional thermal insulation mortar, the steel structure has special requirements for the thermal insulation and fireproof performance of the thermal insulation mortar. The traditional residential thermal insulation mortar currently on the market cannot meet the needs of the development of steel structure housing.

Method used

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  • Inorganic lightweight aggregate thermal mortar for steel structure
  • Inorganic lightweight aggregate thermal mortar for steel structure
  • Inorganic lightweight aggregate thermal mortar for steel structure

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preparation example Construction

[0039] The present invention also provides a preparation method of inorganic lightweight aggregate thermal insulation mortar for steel structure, comprising the steps of:

[0040] S1: Take 500-900 parts of cement, 50-180 parts of fly ash, 10-60 parts of redispersible latex powder, 2.0-9.0 parts of cellulose ether, 40-100 parts of natural zeolite powder, and starch ether in the following mass parts 0.05-0.35 parts and 1.0-70 parts of fiber, dry mixed and evenly prepared into powder;

[0041] S2: Take the lightweight aggregate according to the ratio of the mass (kg) of the powder to the volume (L) of the lightweight aggregate: 1:3.5-4.0;

[0042] S3: Mix lightweight aggregate and powder evenly to make insulating sand;

[0043] S4: Add water to the thermal insulation sand and stir until the consistency is 75-85mm to prepare mortar.

[0044] Among them, "consistency 75-85mm" refers to the cone penetration value of the mortar (also known as the penetration value), which means tha...

Embodiment 1

[0048] An inorganic lightweight aggregate thermal insulation mortar for steel structures, which consists of 42.5 grade ordinary Portland cement 750, fly ash 80, ethylene vinyl acetate latex powder 20, hydroxyethyl methyl Cellulose ether 6.0, natural zeolite powder 65, starch ether 0.2, and glass wool 45 parts are prepared into powder; then the mass (Kg) of the powder: the volume (L) of closed-cell perlite is 1:3.5. Closed-cell perlite, mixed to make mortar raw material. After adding water and mixing, the consistency of the mortar is controlled at (80±5)mm. The thermal conductivity of the obtained thermal insulation mortar is 0.094W / m·k, the compressive strength is 2.8MPa, and the tensile bond strength is 0.30MPa.

Embodiment 2

[0050]An inorganic lightweight aggregate thermal insulation mortar for steel structures, which consists of 42.5 grade ordinary Portland cement 790, fly ash 100, ethylene vinyl acetate latex powder 25, hydroxyethyl methyl Cellulose ether 7.0, natural zeolite powder 74, starch ether 0.2 and PP fiber 3.0 parts are prepared into a powder; then the mass (Kg) of the powder: the volume (L) of closed-cell perlite is 1:3.6. Closed-cell perlite, mixed to make mortar raw material. After adding water and mixing, the consistency of the mortar is controlled at (80±5)mm. The thermal conductivity of the obtained thermal insulation mortar is 0.096W / m·k, the compressive strength is 3.1MPa, and the tensile bond strength is 0.33MPa.

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Abstract

The invention relates to inorganic lightweight aggregate thermal mortar for a steel structure. The inorganic lightweight aggregate thermal mortar for the steel structure is composed of powder and lightweight aggregate, wherein the power is prepared from the components, in parts by mass: 500-900 parts of cement, 50-180 parts of coal ash, 10-60 parts of redispersible latex powder, 2.0-9.0 parts of cellulose ether, 40-100 parts of natural zeolite powder, 0.05-0.35 part of starch ether and 1.0-70 parts of fiber. The cement, coal ash and redispersible latex powder jointly form a compound binding material system; the cement provides the initial bonding strength through preliminary rapid hydration; the coal ash replaces part of the cement to serve as a binding material to achieve the function ofimproving the anti-permeability of mortar while improving the peaceability of mortar; redispersible latex powder is in contact with water to be emulsified to be a film, and film and a hydrated productof cement form an inter-penetrating polymer network structure, so that mortar has the better bonding performance and the certain anti-deforming performance; cellulose ether and starch ether enhance the consistence of mortar, improves the construction performance and water retention capacity of mortar; and natural zeolite powder is used for improving the peaceability of a mortar mixture and improving the fireproof performance of thermal mortar.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an inorganic light aggregate thermal insulation mortar for steel structures. Background technique [0002] Compared with traditional houses, steel structure houses have strong advantages in terms of structural performance, use function, design and construction, and comprehensive cost. The development of steel structure housing has epoch-making significance in promoting housing industrialization and improving housing quality. It is conducive to the technological progress of my country's construction industry, is conducive to stimulating domestic demand in the metallurgical industry and promoting the development of energy-saving and environmentally friendly building materials. It is one of the transformation and upgrading directions of the construction industry. [0003] Although steel structure residences are recognized as a structural system that is environmentally fri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/32C04B2201/50C04B24/26C04B18/08C04B24/38C04B24/383C04B14/42C04B14/047C04B16/0633C04B14/46
Inventor 陈勇敢单银木尹卫泽范琢宇胡立黎应瑛张先进李鹏姜民刘节张才勇
Owner HANGXIAO STEEL STRUCTURE
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