Application of fly ash in construction mortar

A technology for fly ash and construction, applied in the application field of fly ash in construction mortar, can solve the problems of increasing the production cost of retarder, high cost of environmental pollution control, fluctuation of corn price, etc., and achieves remarkable environmental protection efficiency and water resistance. Excellent impermeability and low cost

Inactive Publication Date: 2013-04-24
韩兆云
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, sodium gluconate mainly uses corn starch as raw material, which not only consumes a large amount of food, but also is greatly affected by the fluctuation of corn price.
Moreover, starch preparation, glucose crystallization, centrifugal separation, drying and other links in the main production process of sodium gluconate have high production energy consumption, large water consumption, high cost of environmental pollution control, and greatly increased the production cost of retarder.

Method used

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  • Application of fly ash in construction mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0119] like figure 1 As shown, the application of fly ash in construction mortar, its raw materials are expressed in kg / m 3 Calculated, including the components in the following weight ratios.

[0120] Cement 400.

[0121] Thickening powder 50.

[0122] Fly Ash 130.

[0123] Sand 1500.

[0124] Retarder 8.

[0125] Water 280.

[0126] The preparation method of the retarder is carried out in sequence as follows.

[0127] The crushed straw and 0.2% sulfuric acid are put into the hydrolysis pot at a mass ratio of 1:5, heated to 145 degrees with steam, kept for 50 minutes for hydrolysis, filtered, and the filtrate is added to the new straw powder for the second hydrolysis, and the filter residue is added Its 0.2% sulfuric acid solution of 5 times the mass was hydrolyzed for 60 minutes at a temperature of 175 degrees, filtered, and the filtrate was hydrolyzed with a new primary hydrolysis slag to obtain a higher concentrated sugar solution. Mix the first-stage secondary hyd...

Embodiment 3

[0130] like figure 1 As shown, the application of fly ash in construction mortar, its raw materials are expressed in kg / m 3 Calculated, including the components in the following weight ratios.

[0131] Cement 250.

[0132] Thickening powder 30.

[0133] fly ash 110.

[0134] Sand 1300.

[0135] Retarder 6.

[0136] water 260.

[0137] The preparation method of the retarder is carried out in sequence as follows.

[0138] The crushed straw and 0.4% sulfuric acid are put into the hydrolysis pot according to the mass ratio of 1:4.5, heated to 150 degrees with steam, kept for hydrolysis for 45 minutes, filtered, and the filtrate is added to the new straw powder for the second hydrolysis, and the filter residue is added Its 0.4% sulfuric acid solution of 5 times of mass was hydrolyzed for 70 minutes at a temperature of 175 degrees, filtered, and the filtrate was hydrolyzed with a new primary hydrolysis slag to obtain a relatively concentrated sugar solution. Mix the first-stag...

Embodiment 4

[0141] like figure 1 As shown, the application of fly ash in construction mortar, its raw materials are expressed in kg / m 3 Calculated, including the components in the following weight ratios.

[0142] cement 310.

[0143] Thickened powder 42.

[0144] fly ash 113.

[0145] Sand 1350.

[0146] Retarder 5.

[0147] water 268.

[0148] The preparation method of the retarder is carried out in sequence as follows.

[0149] The crushed straw and 1.95% sulfuric acid are put into the hydrolysis pot at a mass ratio of 1:5, heated to 150 degrees with steam, kept for 40 minutes for hydrolysis, filtered, and the filtrate is added to the new straw powder for the second hydrolysis, and the filter residue is added Its 1.8% sulfuric acid solution of 5 times of mass was hydrolyzed for 50 minutes at a temperature of 180 degrees, filtered, and the filtrate was hydrolyzed with a new primary hydrolysis slag to obtain a higher concentrated sugar solution. Mix the first-stage secondary hydr...

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Abstract

The invention belongs to the technical field of construction mortar production, and especially relates to an application of fly ash in construction mortar. Calculated according to kg/m<3> parts, the mortar comprises raw materials of, by weight, 200-400 parts of cement, 20-50 parts of thickening powder, 100-130 parts of fly ash, 1200-1500 parts of sand, 2-8 parts of a retarder, and 250-280 parts of water. The preparation method of the retarder comprises the steps that: (1) straw powder and acid are added into a hydrolysis pot, such that first-stage first hydrolysis is carried out; and the hydrolysate is neutralized by using an alkali solution; (2) reduced-pressure concentration is carried out; (3) first-stage oxidization is carried out by adding an oxidant; and (4) oxidized mother liquor is concentrated. The application provided by the invention has the advantages of low cost, low production energy consumption, stable long-term strength development, high bonding strength, excellent water resistance and impermeability, and substantial environmental performance.

Description

technical field [0001] The invention belongs to the technical field of mortar production for construction, and in particular relates to the application of fly ash in construction mortar. Background technique [0002] Construction mortar is a building material with a large quantity and a wide range. The lime paste in the mortar contains 50% water and is in the form of a paste, which is difficult to measure by weight, and the quality of the lime paste is unstable. The pure cement mortar lacks water-retaining thickening materials, which appears to be poor in operability and easy to harden. To improve workability, more cement is often added on site , so that the quality of mortar fluctuates greatly. The strength of the masonry mortar fluctuates greatly, and cracking and leakage of the plaster layer are common, which affects the quality of the entire project. [0003] Concrete retarder (English name Retarder) is a concrete admixture added during the concrete mixing process to i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B24/10
Inventor 韩兆云高亮
Owner 韩兆云
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