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Concrete compound type chloride-free early strength agent and preparation method thereof

A composite type and concrete technology, which is applied in the field of early strength agent, can solve the problems such as strength decline, and achieve the effect of improving cement strength, good curing speed and strength

Inactive Publication Date: 2015-12-30
宋介珍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned accelerators all contain chloride ions, and there is a problem of long-term service strength decline in the use of reinforced concrete.

Method used

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  • Concrete compound type chloride-free early strength agent and preparation method thereof
  • Concrete compound type chloride-free early strength agent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0032] The preparation method of early strength agent, by weight, 20 parts of calcium carboxylate, 10 parts of alkali metal carbonate, 5 parts of triethanolamine, 5 parts of formamide, 3 parts of naphthalene sulfonate, 5 parts of sodium sulfate, silicon 3 parts of sodium phosphate, 3 parts of trisodium phosphate, 3 parts of alkanolamide, 2 parts of cellulose ether and 4 parts of aluminum dihydrogen phosphate are stirred evenly in a mixer.

Embodiment 2

[0034] The preparation method of early strength agent, by weight, 40 parts of calcium carboxylate, 15 parts of alkali metal carbonate, 10 parts of triethanolamine, 10 parts of formamide, 6 parts of naphthalene sulfonate, 10 parts of sodium sulfate, silicon 5 parts of sodium phosphate, 5 parts of trisodium phosphate, 6 parts of alkanolamide, 4 parts of cellulose ether and 7 parts of aluminum dihydrogen phosphate are stirred evenly in a mixer.

Embodiment 3

[0036] The preparation method of early strength agent, by weight, 30 parts of calcium carboxylate, 12 parts of alkali metal carbonate, 8 parts of triethanolamine, 8 parts of formamide, 5 parts of naphthalene sulfonate, 8 parts of sodium sulfate, silicon 4 parts of sodium phosphate, 4 parts of trisodium phosphate, 5 parts of alkanolamide, 3 parts of cellulose ether and 6 parts of aluminum dihydrogen phosphate are stirred evenly in a mixer.

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Abstract

The invention relates to a concrete compound type chloride-free early strength agent and a preparation method thereof and belongs to the technical field of early strength agents. The early strength agent comprises components in parts by weight as follows: 20-40 parts of calcium carboxylate, 10-15 parts of alkali carbonate, 5-10 parts of triethanolamine, 5-10 parts of formamide, 3-6 parts of naphthalene sulfonate, 5-10 parts of sodium sulfate, 3-5 parts of sodium silicate, 3-5 parts of trisodium phosphate, 3-6 parts of alkanolamide, 2-4 parts of cellulose ether and 4-7 parts of aluminum dihydrogen phosphate. According to the provided compound water reducer, cement hydration can be accelerated by means of added calcium carboxylate; aluminum dihydrogen phosphate is added and used for controlling a space structure of components, and the cement strength is improved; after the water reducer is applied to cement, the water reducer has better curing speed and strength.

Description

technical field [0001] The invention relates to a composite chlorine-free strength accelerator for concrete and a preparation method thereof, belonging to the technical field of strength accelerators. Background technique [0002] Early strength agent is an admixture that accelerates the early strength development of concrete. Because it takes a long time from the beginning of concrete mixing to the setting and hardening to form a certain strength. To speed up the process, Hope Zaoqiang. [0003] Early strength agents can be divided into three categories: inorganic salts, organic substances, and composite early strength agents. [0004] Commonly used inorganic salts are chloride, sulfate, nitrite, carbonate and so on. The composition of chlorine salt accelerator mainly includes calcium chloride, sodium chloride, aluminum chloride and so on. Accelerators of chloride salts are only allowed to be added to plain concrete without reinforcement. For reinforced concrete, espe...

Claims

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Application Information

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IPC IPC(8): C04B24/38
Inventor 宋介珍
Owner 宋介珍
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