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Early strength agent for cement concrete

A technology of cement concrete and early strength agent, applied in the field of building materials, can solve the problems of inconvenience of construction, limit of dosage, construction errors, etc., and achieve the effects of improving construction efficiency, saving investment cost and improving concrete performance.

Pending Publication Date: 2019-11-19
徐州金盟新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the traditional chloride-based concrete early strength agent is easy to cause corrosion of steel bars, and in the concrete of steel bars, the amount of CaCl2 should not exceed 1% of the amount of cement.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A cement concrete early strength agent, composed of the following raw materials by weight: 35 parts of fly ash, 18 parts of potassium chloride, 25.5 parts of sodium chloride, 18 parts of sodium sulfite and sodium hydroxide mixture, 23 parts of potassium aluminum sulfate , 11 parts of surfactant, 3.5 parts of expanded perlite, 12.5 parts of fatty acid, 3.5 parts of ethanolamide, 11 parts of Glauber's salt, 3.5 parts of calcium sugar, 22 parts of lime, 25 parts of calcium formate, 11 parts of triethanolamine, 16.5 parts of bentonite, three 12 parts of isopropanolamine, 3 parts of ethanol, 22 parts of water.

[0012] The surfactant raw material is: sodium alkylbenzene sulfonate.

[0013] The proportion of sodium sulfite and sodium hydroxide in the mixture of sodium sulfite and sodium hydroxide is 25%:75%.

Embodiment 2

[0015] A cement concrete early strength agent, composed of the following raw materials by weight: 55 parts of fly ash, 22 parts of potassium chloride, 27.5 parts of sodium chloride, 22 parts of sodium sulfite and sodium hydroxide mixture, 26 parts of potassium aluminum sulfate , 17 parts of surfactant, 7.5 parts of expanded perlite, 15.5 parts of fatty acid, 6.5 parts of ethanolamide, 17 parts of Glauber's salt, 7.5 parts of calcium sugar, 27 parts of lime, 28 parts of calcium formate, 17 parts of triethanolamine, 18.5 parts of bentonite, three 16 parts of isopropanolamine, 7 parts of ethanol, 26 parts of water.

[0016] The surfactant raw material is: sodium alkylbenzene sulfonate.

[0017] The proportion of sodium sulfite and sodium hydroxide in the mixture of sodium sulfite and sodium hydroxide is 25%:75%.

Embodiment 3

[0019] A cement concrete early strength agent, composed of the following raw materials by weight: 45 parts of fly ash, 20 parts of potassium chloride, 26.5 parts of sodium chloride, 20 parts of sodium sulfite and sodium hydroxide mixture, 24.5 parts of aluminum potassium sulfate , 14 parts of surfactant, 5 parts of expanded perlite, 14 parts of fatty acid, 5 parts of ethanolamide, 14 parts of Glauber's salt, 5.5 parts of sugar calcium, 24 parts of lime, 26.5 parts of calcium formate, 14 parts of triethanolamine, 17.5 parts of bentonite, three 14 parts of isopropanolamine, 5 parts of ethanol, 22-26 parts of water.

[0020] The surfactant raw material is: sodium alkylbenzene sulfonate.

[0021] The proportion of sodium sulfite and sodium hydroxide in the mixture of sodium sulfite and sodium hydroxide is 25%:75%.

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PUM

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Abstract

The invention discloses an early strength agent for cement concrete. The early strength agent is composed of the following raw materials by weight: 35 to 55 parts of fly ash, 18 to 22 parts of potassium chloride, 25.55 to 27.5 parts of sodium chloride, 18 to 22 parts of a mixture of sodium sulfite and sodium hydroxide, 3.5 to 7.5 parts of sugar calcium, 22 to 27 parts of lime, 25 to 28 parts of calcium formate, 11 to 17 parts of triethanolamine, 16.5 to 18.5 of bentonite, 12 to 16 parts of triisopropanolamine, 3 to 7 parts of ethanol and 22 to 26 parts of water. The early strength agent for cement concrete in the invention can effectively improve concrete performance, enhance construction efficiency and save investment cost; the early strength agent does not contain chloride ions and thushas no corrosion effect on reinforcing steel bars; and the early strength agent meets a variety of engineering needs, is conducive to speeding up construction and reducing construction costs, and hasparticularly obvious effect on strengthening and modifying blast furnace slag cement.

Description

technical field [0001] The invention relates to a cement concrete early strength agent, which relates to a building material. Background technique [0002] Concrete early strength agent refers to the admixture that can improve the early strength of concrete and has no significant effect on the later strength. Its main function is to accelerate the hydration rate of cement and promote the development of early strength in coagulation. Traditional early strength agents are more corrosive to buildings, and have extremely poor effects at low temperatures. [0003] However, the traditional chloride-based concrete early-strength agent is easy to cause corrosion of steel bars, and in the reinforcement coagulation, the CaCl2 content should not exceed 1% of the cement content. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a cement concrete early strength agent according to the present invention, which can effectively i...

Claims

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Application Information

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IPC IPC(8): C04B24/20C04B103/10
CPCC04B40/0039C04B2103/10C04B18/08C04B22/124C04B22/147C04B22/062C04B22/142C04B14/185C04B24/08C04B24/124C04B22/064C04B24/04C04B24/122C04B14/104C04B24/026C04B24/20
Inventor 何广振
Owner 徐州金盟新型建材有限公司
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