Crystal nucleus concrete early strength agent and preparation method thereof

A kind of technology of concrete and early strength agent, applied in concrete early strength agent, the preparation of described crystal nucleus type concrete early strength agent, the field of crystal nucleus type concrete early strength agent, can solve the problem of less loss of concrete strength, short demoulding time, Issues such as no guidance plan are given, and the effects of less strength loss in the later stage, short demoulding time, and shortened demoulding time are achieved

Active Publication Date: 2017-08-11
SHIJIAZHUANG CHANGAN YUCAI BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above technologies have not given specific guidance on how to make the concrete early strength agent so that the concrete can solidify quickly, the dem

Method used

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  • Crystal nucleus concrete early strength agent and preparation method thereof
  • Crystal nucleus concrete early strength agent and preparation method thereof
  • Crystal nucleus concrete early strength agent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0020]Embodiment 1: the crystal nucleus type concrete early strength agent of the present invention is characterized in that making the described crystal nucleus type concrete early strength agent of 1000 parts by weight is made of the raw materials of the following components and weight ratio Prepared: 130 parts of polymer, 37 parts of sodium metasilicate pentahydrate, 72 parts of calcium nitrate tetrahydrate, and the rest is deionized water. The preparation method of described crystal nucleus type concrete early strength agent comprises the following process steps: 1. first add 130 parts of polymers in the there-necked flask with stirring device, then add deionized water to make up the bottom liquid that the weight becomes 700 parts, and The flask is placed in a hot water bath, the temperature is controlled at 50±0.5°C, the stirring rate is 300-500rpm, and stirred for 0.5h to keep the temperature and concentration of the solution uniform; ②Take 37 parts of sodium metasilicate...

Embodiment 2

[0021] Embodiment 2: the crystal nucleus type concrete early strength agent of the present invention is characterized in that making the described crystal nucleus type concrete early strength agent of 1000 parts by weight is made of the raw materials of the following components and weight ratio Prepared: 110 parts of polymer, 25 parts of sodium metasilicate pentahydrate, 60 parts of calcium nitrate tetrahydrate, and the rest is deionized water. The preparation method of described crystal nucleus type concrete early strength agent comprises the following process steps: 1. first add 110 parts of polymers in the there-necked flask with stirring device, then add deionized water to make up the bottom liquid that the weight becomes 700 parts, and The flask is placed in a hot water bath, the temperature is controlled at 50±0.5°C, the stirring rate is 300-500rpm, and stirred for 0.5h to keep the temperature and concentration of the solution uniform; ②Take 25 parts of sodium metasilicat...

Embodiment 3

[0022] Embodiment 3: the crystal nucleus type concrete early strength agent of the present invention is characterized in that making the described crystal nucleus type concrete early strength agent of 1000 parts by weight is made of the raw materials of the following components and weight ratio Prepared: 150 parts of polymer, 50 parts of sodium metasilicate pentahydrate, 90 parts of calcium nitrate tetrahydrate, and the rest is deionized water. The preparation method of described crystal nucleus type concrete early strength agent comprises the following process steps: 1. first add 150 parts of polymers in the there-necked flask with stirring device, then add deionized water to make up the bottom liquid that the weight becomes 700 parts, and The flask is placed in a hot water bath, the temperature is controlled at 50±0.5°C, the stirring rate is 300-500rpm, and stirred for 0.5h to keep the temperature and concentration of the solution uniform; ②Take 50 parts of sodium metasilicat...

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Abstract

The invention discloses a crystal nucleus concrete early strength agent and a preparation method thereof. 1,000 parts of crystal nucleus concrete early strength agent are prepared from the following raw materials in parts by weight: 100-150 parts of a polymer, 20-50 parts of sodium metasilicate pentahydrate, 60-90 parts of calcium nitrate tetrahydrate and the balance of deionized water. The preparation method comprises the steps of firstly adding the polymer to a three-neck flask, adding the deionized water to form a base solution, putting the flask into a hot water bath, controlling the temperature and stirring; taking the sodium metasilicate pentahydrate, and adding the deionized water to prepare a solution A; taking the calcium nitrate tetrahydrate and adding the deionized water to prepare a solution B; dropwise adding the solution A and the solution B to the base solution at the same rate, carrying out heat preservation on the product, stirring and reacting; and finally quickly cooling a product to a room temperature to obtain the final product, namely the crystal nucleus concrete early strength agent. The crystal nucleus concrete early strength agent is good in performance, is capable of making concrete solidified quickly, is short in demolding time and not easy to collapse and has a certain water reducing effect, and the later strength loss of the concrete is small.

Description

technical field [0001] The invention relates to a concrete early-strength agent, in particular to a crystal nucleus type concrete early-strength agent, and belongs to the technical field of building material admixtures. The invention also relates to a preparation method of the crystal nucleus type concrete accelerator. Background technique [0002] With the acceleration of my country's urbanization process and the rapid development of transportation network construction, especially the construction of high-speed railways and subways, prefabricated concrete structures have become an important development direction of my country's concrete industry. Higher requirements. At the same time, with the establishment, implementation and deepening of my country's sustainable development strategy, higher requirements have been put forward for the service life of concrete. The current chloride-based early-strength agents and sulfate-based inorganic early-strength agents contain chloride...

Claims

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Application Information

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IPC IPC(8): C04B24/26C04B103/12
CPCC04B40/0039C04B2103/12C04B24/2605C04B12/04C04B22/085
Inventor 冯弘王龙飞刘江涛姚晓鹏刘旭飞王羡张中元刘翠芬康静
Owner SHIJIAZHUANG CHANGAN YUCAI BUILDING MATERIALS
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