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A kind of machine-made sand wet-mixed mortar admixture and preparation method thereof

A wet-mixed mortar and admixture technology, applied in the field of machine-made sand wet-mixed mortar admixture and its preparation, can solve problems such as unstable stratification, achieve excellent viscosity and workability, prolong open time, and improve water retention Effect

Active Publication Date: 2022-02-18
云南森博混凝土外加剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a machine-made sand wet-mix mortar admixture and its The preparation method starts from the water-reducing mother liquor of wet-mixed mortar admixture, and develops a special water-reducing mother liquor for machine-made sand wet-mixed mortar admixture through molecular design. The admixture of the mortar mixing agent is cumbersome, the function is small and the materials are mixed, and the finished product is easy to delaminate, etc., and it does not affect the development time and strength of the mortar.

Method used

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  • A kind of machine-made sand wet-mixed mortar admixture and preparation method thereof
  • A kind of machine-made sand wet-mixed mortar admixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A machine-made sand wet-mixed mortar admixture and a preparation method thereof of the present invention comprise the following steps:

[0028] 1) Dissolve 330g of prenol polyoxyethylene ether, 4.2g of maleic acid, and 3g of potassium persulfate in 408g of deionized water to prepare A1 solution;

[0029] 2) Dissolve 14.8g of acrylic acid, 3.2g of sodium methacrylate, 4g of hydroxypropyl acrylate, and 5.5g of 2-maleimidoacetic acid in 120g of deionized water to form B1 solution;

[0030] 3) Dissolve 2 g of hydroxyethylidene diphosphate, 1.8 g of sucrose, and 0.3 g of L-sodium ascorbate in 100 g of deionized water to prepare a C1 solution;

[0031] 4) Add the B1 solution and the C1 solution dropwise into the stirred A1 solution respectively, the time for the B1 solution to be added dropwise is 54 minutes, and the time for the C1 solution to be added dropwise is 59 minutes. After the dropwise addition, continue to keep warm and stir for 1 hour to obtain the special water ...

Embodiment 2

[0034] A machine-made sand wet-mixed mortar admixture and a preparation method thereof of the present invention comprise the following steps:

[0035] 1) Dissolve 330g of prenol polyoxyethylene ether, 3.9g of methacrylic acid, and 3.2g of ammonium persulfate in 408g of deionized water to prepare A2 solution;

[0036] 2) Dissolve 14.8g of acrylic acid, 3.2g of sodium methacrylate, 4g of hydroxypropyl acrylate, and 6g of 3-maleimidopropionic acid in 120g of deionized water to prepare B2 solution;

[0037] 3) Dissolve 2g of hydroxyethylidene diphosphate, 1.8g of sucrose, and 0.16g of E51 in 100g of deionized water to prepare a C2 solution;

[0038] 4) Add the B2 solution and the C2 solution dropwise into the stirred A2 solution respectively, the time for the B2 solution to be added dropwise is 54 minutes, and the time for the C2 solution to be added dropwise is 59 minutes. After the dropwise addition, continue to keep warm and stir for 1 hour to obtain the special water reducer ...

Embodiment 3

[0041] A machine-made sand wet-mixed mortar admixture and a preparation method thereof of the present invention comprise the following steps:

[0042] 1) Dissolve 330g of prenol polyoxyethylene ether, 4g of acrylic acid, 2.5g of ammonium persulfate, and 1.7g of hydrogen peroxide in 404g of deionized water to prepare A3 solution;

[0043] 2) Dissolve 14.8g of acrylic acid, 3.2g of sodium methacrylate, 4g of hydroxypropyl acrylate, and 2g of 4-maleimide butyric acid in 120g of deionized water to prepare B3 solution;

[0044] 3) Dissolve 2g of hydroxyethylidene diphosphate, 1.8g of sucrose, and 0.3g of sucrose in 100g of deionized water to prepare a C3 solution;

[0045] 4) Add the B3 solution and the C3 solution dropwise into the stirred A3 solution respectively, the time for the B3 solution to be added dropwise is 54 minutes, and the time for the C3 solution to be added dropwise is 59 minutes. After the dropwise addition, continue to keep warm and stir for 1 hour to obtain the...

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Abstract

The invention discloses an admixture for machine-made sand wet-mixed mortar and a preparation method thereof. The water agent introduces maleic acid iminoalkyl acid and hydroxypropyl acrylate, which solves the problem of the mud and powder content in the machine-made sand wet-mixed mortar, the adsorption of admixtures, and the water retention and encapsulation of coarse sand. The machine-made sand wet-mix mortar admixture of the present invention improves the consistency and water retention rate of the machine-made sand wet-mix mortar, thereby prolonging the opening time of the mortar, and solving the cumbersome compounding and miscellaneous functions of the general wet-mix mortar admixture Many, the finished product is easy to delaminate and other problems.

Description

technical field [0001] The invention relates to a machine-made sand wet-mixed mortar admixture and a preparation method thereof, belonging to the technical field of concrete admixtures. Background technique [0002] With the development of the construction industry, ready-mixed mortar has been well promoted and used. Ready-mixed mortar includes dry-mixed mortar and wet-mixed mortar. After mixing in a certain proportion, it is transported to the designated place and then mixed with water. The wet-mixed mortar is similar to commercial concrete. It needs to be mixed at the mixing station to make a finished product and then transported to the designated storage container. It can be taken directly when needed. Compared with dry-mixed mortar, wet-mixed mortar can ensure stable quality, avoid secondary mixing and noise and dust pollution on the construction site, and at the same time have more room for material selection, saving drying costs. Generally, wet-mixed mortar is compose...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/32C08F283/06C08F220/06
CPCC04B40/0039C04B24/32C08F283/065
Inventor 徐兴卫阿光强李金梅唐凯阿光城陈志翔
Owner 云南森博混凝土外加剂有限公司