Acrylate emulsion modified cement-base repair mortar

A technology of acrylate and repair mortar, which is applied in the field of building materials, can solve the problems of poor compatibility of cement substrates, low bond strength, and large shrinkage, and achieve good fluidity, water retention, and high flexural strength , Improve the effect of flexibility

Inactive Publication Date: 2011-11-23
SHANGHAI SUNRISE POLYMER MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic repair materials have the advantages of high strength, good compatibility, and easy construction, but there are problems such as low bond strength, large shrinkage rate, and easy to fal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1

[0037] An acrylic emulsion modified cement-based repair mortar, according to Portland cement 100, 0.50mm~2.0mm quartz sand 50, less than 0.50mm quartz sand 100, polymer emulsion 10, water reducing agent 0, polypropylene fiber 1, It is made up of cellulose ether 0, defoamer 0 and 60 parts by weight of water and mixed uniformly. This repair mortar has a fluidity of 200mm, a 28-day flexural strength of 7.7 MPa, a 28-day compressive strength of 36.7 MPa, and a 7-day tensile bond strength of 0.72 MPa.

Example Embodiment

[0038] Example 2

[0039] An acrylic emulsion modified cement-based repair mortar, according to Portland cement 100, 0.50mm~2.0mm quartz sand 220, less than 0.50mm quartz sand 10, polymer emulsion 80, water reducing agent 0.1, polypropylene fiber 2, It is prepared by mixing cellulose ether 0.1, polysiloxane antifoaming agent BYK-065 0.2 and water 0 parts by weight and mixing uniformly. The fluidity of this repair mortar is 180mm, the 28-day flexural strength is 12.8MPa, the 28-day compressive strength is 41.2MPa, and the 7-day tensile bonding strength is 2.78MPa.

Example Embodiment

[0040] Example 3

[0041] An acrylic emulsion modified cement-based repair mortar, according to Portland cement 100, 0.50mm~2.0mm quartz sand 100, less than 0.50mm quartz sand 80, polymer emulsion 20, water reducing agent 0.2, polypropylene fiber 0.5, It is prepared by cellulose ether 0.1, polyether defoamer HT-606 1.2 and 40 parts by weight of water and mixed uniformly. This repair mortar has a fluidity of 165mm, a 28-day flexural strength of 9.8 MPa, a 28-day compressive strength of 55.4 MPa, and a 7-day tensile bond strength of 1.25 MPa.

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Abstract

The invention discloses acrylate emulsion modified cement-base repair mortar, which consists of the following components in part by weight: 100 parts of portland cement, 50 to 220 parts of 0.50 to 2.0 millimeters of quartz sand, 10 to 100 parts of less than 0.50 millimeter of quartz sand, 5 to 80 parts of acrylate emulsion, 0 to 1.0 part of water reducing agent, 0.5 to 5.0 parts of polypropylene fiber, 0 to 1 part of cellulose ether, 0 to 1.2 parts of defoaming agent and 0 to 60 parts of water. The acrylate emulsion modified cement-base repair mortar has high breaking strength, bonding strength, volume stability, durability and compatibility with cement-base materials, has the high flowability and water-retaining property in the aspect of construction performance, can meet the requirements of different engineering constructions, and can be widely applied to the repair in fields of municipal administration, road surfaces, airports, ports, bridges, dams and the like.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an acrylate emulsion modified cement-based repair mortar. Background technique [0002] As the most important building structure material today, concrete has a history of nearly 200 years. With the continuous development of concrete technology and the continuous improvement of my country's economic development needs, concrete has been widely used in the construction of ports, dams, bridges, airports, municipal and other modern projects. According to the "2009 Statistical Bulletin on the Development of Highway and Waterway Transportation Industry", at the end of 2009, the total mileage of national highways reached 3,860,800 kilometers, an increase of 130,700 kilometers compared with the end of the previous year, and the technical grade and road surface conditions of roads were further improved. In addition, the total number of highway bridges, tunnels, and ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B26/04
CPCC04B28/04C04B26/06
Inventor 傅乐峰叶丹玫郑柏存冯中军孙振平
Owner SHANGHAI SUNRISE POLYMER MATERIAL CO LTD
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