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Gypsum composition, blocks and steel skeleton lightweight high strength crack-resistant gypsum lath
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A technology of steel skeleton and composition, which is applied in the direction of building construction, ceramic products, and other household appliances, etc., and can solve problems such as unevenness, uneven density, and unsatisfactory overcoming of air bubbles, etc.
Active Publication Date: 2018-10-30
湖北世宇新型建材有限公司
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Problems solved by technology
[0008] The inventor has tried a large number of inorganic raw materials such as kaolin, bentonite, sepiolite, pumice, perlite, etc. to carry out formulation design through a large number of experiments, but still cannot satisfactorily overcome the problem in the inventor's previous patent application. Disadvantages of the disclosed block products (ie non-uniformity of air bubbles or non-uniformity of density)
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Embodiment 1
[0165] A) Preparation of gypsum block and gypsum board
[0166] Add 820kg of water into the mixing tank, then add 12kg of water reducer (SM), 1.5kg of sodium lauryl sulfate, then add 350kg of hemihydrate gypsum, 220kg of ordinary Portland cement (type 425), 280kg of fly ash and Polybutadiene rubber (PBR) powder (200um average particle size) 6Kg mixed powder. High-speed stirring, stirring speed 400-800rpm. Stirring time 20-30s. The measured wet bulk density of the slurry material (or concrete) is 1.63 tons / cubic meter. Then respectively in the block mold that inner surface has been coated with potassium soap mold release agent and inner surface has been coated with potassium soap mold release agent and has packed into three-dimensional steel framework (thickness t=12cm, length l=3.0 meters, Width w=0.6m, where the width of the steel skeleton is in the vertical direction, the length and thickness of the steel skeleton are in the horizontal direction, and two layers of steel w...
Embodiment 2
[0172] A) Preparation of gypsum blocks and gypsum boards: Example 1 was repeated, except that the amount of water added was 860 kg and 100 kg of lignocellulose was further added before stirring. The wet bulk density of the slurry (or concrete) is 1.58 tons / m3.
[0173] B) Performance index of gypsum block and gypsum board
[0174] The index of the finished block is: dry bulk density 801kg / m 3 , compressive strength 16.3Mpa, thermal conductivity 0.09w / ㎡·℃, frost resistance cycle ≥ 30, fire resistance class A, softening coefficient 0.81, water resistance ≥ 10 years, can be soaked in water for several years without softening.
[0175] According to the upper and lower positions of the block or plate when it is poured, sample 8cm from the surface and bottom of the hardened block or plate. 3 Cube, weighing, measured: the density of the surface sample of the block (i.e. the surface layer density) is 798kg / m 3 , the density of the bottom sample of the block (that is, the bottom lay...
Embodiment 3
[0177] Repeat embodiment 1, just the addition of polybutadiene rubber (PBR) powder is 10Kg, and SDS consumption is 0.1Kg.
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Abstract
The invention discloses a gypsum composition. By pouring the gypsum composition in a die and conducting hardening, the block can be molded, and by pouring the gypsum composition in the die loaded with a steel wire mesh or glass fiber mesh prefabricated three-dimensional steel skeleton and conducting hardening, a steel skeleton steel wire mesh (or glass fiber mesh) lightweight high strength anti-cracking gypsum board, especially a plank can be molded. The gypsum composition includes: semi-hydrated gypsum, Portland cement, fly ash, elastomer powder, a water reducing agent, a foaming agent and water. The composition also include: micro silicon powder, slag powder, and / or water granulated slag powder, and an antifreezing agent. The dosage of water should makes the wet unit weight of silt slurry in the range of 1.4-1.85 ton / cubic meter. The three-dimensional steel skeleton is a hexahedral steel skeleton, and also can be an irregular part with window frame or door frame or with a part of window frame or door frame.
Description
technical field [0001] The invention relates to a gypsum composition, a building block and a steel frame steel wire mesh (or glass fiber mesh) lightweight high-strength anti-crack gypsum board, in particular to a steel frame steel wire mesh (or glass fiber mesh) lightweight high-strength anti-crack gypsum lath. Background technique [0002] At present, among the wall materials in our country, traditional wall materials still occupy a dominant position, and there are problems such as backward industrial structure, high production energy consumption, and environmental pollution. In recent years, although some thermal insulation blocks have appeared, the thermal insulation performance is not ideal, and according to the characteristics of building materials, while providing thermal insulation performance of materials, the performance and indicators of materials in terms of light weight, strength and convenient construction cannot be reduced. , because wall insulation and its str...
Claims
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Application Information
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