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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 fall off; organic repair materials have high bond strength, short maintenance time, and durability Good and other outstanding advantages, but poor compatibility with cement substrates and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] An acrylate emulsion-modified cement-based repair mortar, comprising Portland cement 100, 0.50mm-2.0mm quartz sand 50, quartz sand less than 0.50mm 100, polymer emulsion 10, water reducing agent 0, polypropylene fiber 1, The cellulose ether 0, the defoamer 0 and the water 60 parts by weight are prepared and stirred evenly. The fluidity of this repair mortar is 200mm, the 28-day flexural strength is 7.7 MPa, the 28-day compressive strength is 36.7 MPa, and the 7-day tensile bond strength is 0.72 MPa.

Embodiment 2

[0039] An acrylate emulsion-modified cement-based repair mortar, comprising Portland cement 100, 0.50mm-2.0mm quartz sand 220, quartz sand less than 0.50mm 10, polymer emulsion 80, water reducing agent 0.1, polypropylene fiber 2, 0.1 parts by weight of cellulose ether, 0.2 parts by weight of polysiloxane defoamer BYK-065 and 0 parts by weight of water are prepared and stirred evenly. 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 bond strength is 2.78MPa.

Embodiment 3

[0041] An acrylate emulsion-modified cement-based repair mortar, comprising Portland cement 100, 0.50mm-2.0mm quartz sand 100, quartz sand less than 0.50mm 80, polymer emulsion 20, water reducing agent 0.2, polypropylene fiber 0.5, 0.1 parts by weight of cellulose ether, 1.2 parts by weight of polyether defoamer HT-606 and 40 parts by weight of water are prepared and stirred evenly. The fluidity of this repair mortar is 165 mm, the 28-day flexural strength is 9.8 MPa, the 28-day compressive strength is 55.4 MPa, and the 7-day tensile bond strength is 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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