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Ecological potassium magnesium phosphate cement-based repairing material

A technology of magnesium potassium phosphate cement and repair materials, which is applied in the field of building materials, can solve problems such as poor fluidity, large color difference, and short initial setting time of MKPC, and achieve good compatibility, prevent cracks, and enhance mechanical strength and adhesion. Effect

Active Publication Date: 2021-09-03
浙江永坚新材料科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In order to overcome the deficiencies of the prior art, in order to solve the technical problems of the existing MKPC such as short initial setting time, poor fluidity, and large color difference with the ordinary concrete to be repaired, the present invention provides an ecological potassium magnesium phosphate cement-based repair material, It has the characteristics of controllable setting time, adjustable color, high early strength and ecological environment protection

Method used

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  • Ecological potassium magnesium phosphate cement-based repairing material

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preparation example Construction

[0037] The preparation method of the waterworks sludge powder in this example: select the sludge from the sedimentation tank of the waterworks, and obtain the sludge particles as they are through industrialized centralized centrifugal dehydration, and prepare them through the process of microwave autoclave curing-drying treatment-graded calcination-mechanical grinding To obtain sludge powder from waterworks, specifically, (1) uniformly raise the temperature of sludge particles from waterworks as they are for 0.5 hours, fill in steam during the heating process, and at the same time turn on the microwave at full power for 20 minutes, and stabilize the temperature in the kettle between 180°C and 195°C During the period, the pressure is controlled at 1.20MPa to 1.30MPa, and the constant temperature is 4.5h; (2) all the microwaves are turned off, and the temperature is turned off for about 1h, and then the kettle door is opened to dry, and the sludge particles larger than 5.5mm in si...

Embodiment 1

[0044] Calculated by weight components, including 215 parts of overburned magnesium oxide powder, 133 parts of potassium dihydrogen phosphate, 13 parts of sludge powder from waterworks, 13 parts of silica fume, 13 parts of nano-scale white corundum powder, 13 parts of titanium dioxide, ten 8.6 parts of disodium hydrogen phosphate dihydrate, 3.1 parts of borax, 4.3 parts of calcium chloride, and 88 parts of water.

[0045] Performance testing: fluidity, coagulation time and compressive strength are shown in Table 1.

Embodiment 2

[0047] Calculated by weight components, including 202 parts of overburned magnesium oxide powder, 133 parts of potassium dihydrogen phosphate, 26 parts of sludge powder from waterworks, 13 parts of silica fume, 13 parts of nano-scale white corundum powder, 13 parts of titanium dioxide, ten 8.6 parts of disodium hydrogen phosphate dihydrate, 3.1 parts of borax, 4.3 parts of calcium chloride, and 88 parts of water.

[0048] Performance testing: fluidity, coagulation time and compressive strength are shown in Table 1.

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Abstract

The invention provides an ecological magnesium potassium phosphate cement-based repairing material, which is prepared by mixing magnesium potassium phosphate cement-based powder and water, wherein the mass ratio of the magnesium potassium phosphate cement-based powder to the water is 1: 0.22, and the magnesium potassium phosphate cement-based powder comprises the following components in parts by weight: 335-374 parts of magnesium potassium phosphate cement, 26-65 parts of a mineral admixture, and 16 parts of a composite retarder. The ecological magnesium potassium phosphate cement-based repairing material provided by the invention has the characteristics of controllable setting time, adjustable color, high early strength, ecological environmental protection and the like.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an ecological potassium magnesium phosphate cement-based repair material. Background technique [0002] Concrete is one of the most commonly used materials in modern engineering construction. Due to various adverse environmental conditions, it will be damaged to varying degrees during use, and cracks are the main reason for the reduction of the performance of concrete structures such as bearing capacity, durability and water resistance. one of the reasons. Using repair materials to repair and strengthen damaged structures is an effective technical means to improve the durability of damaged concrete structures. If ordinary concrete is used to complete the repair work, buildings and traffic have to be blocked for a long time, which seriously affects people's life and travel. Taking into account factors such as personnel entering the site, construction prepar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34C04B111/72
CPCC04B28/344C04B2201/50C04B2111/72C04B2111/00017C04B22/16C04B22/066C04B18/0427C04B18/146C04B14/303C04B14/305C04B22/0013C04B22/124
Inventor 王建苗何智海朱浩南桑伟郑洪燕毛奇奇李静
Owner 浙江永坚新材料科技股份有限公司
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