Dry powder mortar and method for preparing the same
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A dry powder mortar and yellow sand technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of high labor intensity, large waste of materials, inconvenient transportation, etc., to ensure construction quality and reduce disease transmission. , the effect of reducing labor intensity
Inactive Publication Date: 2009-02-04
常州市众华建材科技有限公司
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Problems solved by technology
[0003] The technical problems to be solved by the present invention are: the traditional mortar is unevenly mixed, contains impurities, excessive mud content, has no water retention function, serious bleeding and separation phenomenon,
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example 1
[0025] Yellow sand pretreatment: after the yellow sand is paved and dried, the yellow sand is passed through a coarse sieve to remove large particles of impurities, and the coarse sieved yellow sand is dried in a three-pass sand drying device, and then the dried yellow sand is finely sieved , the fineness modulus of yellow sand is 2.3-2.6 and the maximum particle size of yellow sand is less than or equal to 2.5mm.
[0026] Material ratio: Weigh 76 parts of yellow sand, 15 parts of cement, 6 parts of fly ash, 3 parts of thickened powder and 0.0015 parts of bentonite through a scale.
[0027] Material mixing: put the material into a gravity-free mixer, stir for 180 seconds, and mix evenly to form dry sand powder.
[0028] Dry-mixed sand powder pulping: Dry-mixed sand powder and water are mixed at a ratio of 100:13 to form a slurry before use.
example 2
[0030] Yellow sand pretreatment: after the yellow sand is paved and dried, the yellow sand is passed through a coarse sieve to remove large particles of impurities, and the coarse sieved yellow sand is dried in a three-pass sand drying device, and then the dried yellow sand is finely sieved , the fineness modulus of yellow sand is 2.3-2.6 and the maximum particle size of yellow sand is less than or equal to 2.5mm.
[0031] Material ratio: Weigh 76 parts of yellow sand, 15 parts of cement, 6 parts of fly ash, 3 parts of thickened powder and 0.0015 parts of bentonite by weighing scale, add 0.5% of cellulose ether and 0.2% of water reducer to the total mass of materials .
[0032] Material mixing: Put the materials into a gravity-free mixer, stir for 2.5 hours, and mix them evenly to form dry sand powder.
[0033] Dry-mixed sand powder pulping: Dry-mixed sand powder and water are mixed at a ratio of 100:15 to form a slurry before use.
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Abstract
The invention relates to a dry powder mortar composition for construction, in particular to the high-strength construction dry powder mortar which can be widely used in building, plastering and road surface in the construction industry; the dry powder mortar comprises cement, yellow sand, fly ash and thickened powder, the dry powder mortar is characterized in that the weight percentages of the components are as follows: cement: 15 percent; yellow sand: 76 percent; fly ash: 6 percent; thickened powder: 2.9985 percent; and bentonite: 0.0015 percent; a preparation process includes the following steps: a. the pretreatment of the yellow sand is carried out; b. the material preparation is carried out; c. the mixing of the materials and the powder is carried out; d. and the sand powder is dry-mixed for use. The technical problems to be solved by the invention are as follows: the traditional mortar mixing is uneven, impurities are contained therein, the silt content is too high, the water-retaining function does not realize, the bleeding is severe and the separation phenomenon occurs, thereby causing unstable quality, great environmental pollution, great material waste, no mechanical construction, inconvenient transportation and high labor intensity.
Description
technical field [0001] The invention relates to a composition of dry powder mortar for construction, in particular to a high-strength construction dry powder mortar which can be widely used in building blocks, plastering and ground in the construction industry. Background technique [0002] The widespread use of concrete in construction has led people to try to improve the production efficiency and quality of concrete. Ready-mixed concrete first appeared in Britain before World War II. This kind of concrete produced on a large scale in a professional factory can be used directly after being transported to the construction site by a special mixer truck: thus greatly improving the efficiency of construction and the quality of construction. Today, commercial concrete has developed into one of the main building materials. On the contrary, the production of mortar building materials has always been manually mixed and prepared at the construction site, and a dry powder prefabric...
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