Multifunctional concrete curing agent, as well as preparation method and application thereof

A concrete curing agent, multi-functional technology, applied in the field of construction engineering, can solve problems such as peeling off, affecting concrete construction, affecting concrete performance, etc., to improve durability and crack resistance, and improve chemical medium erosion and durability , the effect of super penetration and crystallization ability

Inactive Publication Date: 2018-09-11
HEBEI CONSTR GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existence of this layer of film affects the subsequent construction of concrete to a certain extent, and some concrete will also have brush marks, discoloration, peeling and peeling, etc., which will affect the performance of concrete in the later stage
In addition, concrete is often exposed to various harsh environments in practical engineering applications, such as the intrusion of corrosive media around the environment, changes in ambient temperature and humidity, freeze-thaw cycle damage, and some concrete projects are often subject to heavy load wear, etc. These external conditions will seriously affect the service life of concrete
Therefore, the use of simple concrete curing agents in the traditional sense is difficult to achieve the function of concrete protection during pouring.

Method used

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  • Multifunctional concrete curing agent, as well as preparation method and application thereof
  • Multifunctional concrete curing agent, as well as preparation method and application thereof
  • Multifunctional concrete curing agent, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The composition and percentage by weight of the present embodiment are 20% of nano silicon dioxide; 1% of sodium metasilicate; 0.5% of sodium hydroxide; 0.1% of polyethylene oxide; 0.05% of surfactant; 0.1% of stabilizer; 0.15%; sodium polyphosphate 0.3%; deionized water 77.8%. To prepare a 100kg sample for trial mixing.

[0032] The first step is to weigh 77.8kg of deionized water and place it in the reactor, heat it to 90-100°C, slowly add 20kg of nano-silica and keep stirring. Add 1kg of sodium metasilicate and 0.5kg of sodium hydroxide to the reactor, and close the feeding port to maintain the working pressure of the reactor at 21g / cm 2 , the working temperature is 100°C, the stirrer stirs at a high speed for 10 minutes, and the stirring speed is 250 rpm.

[0033] The second step is to open the feeding port, put in 0.15kg of sodium sulfate and 0.3kg of sodium polyphosphate in turn, close the feeding port, and maintain the working pressure of the reactor at 21g / cm ...

Embodiment 2

[0037] The composition and percentage by weight of the present embodiment are nano silicon dioxide 15%; Sodium metasilicate 0.8%; Sodium hydroxide 0.2%; Polyethylene oxide 0.15%; Surfactant 0.08%; Stabilizer 0.05%; 0.25%; sodium polyphosphate 0.35%; deionized water 83.12%. To prepare a 100kg sample for trial mixing.

[0038] The first step is to weigh 83.12kg of deionized water and place it in the reactor, heat it to 90-100°C, slowly add 15kg of nano-silica and keep stirring. Add 0.8kg of sodium metasilicate and 0.2kg of sodium hydroxide into the reactor, and close the feeding port to maintain the working pressure of the reactor at 21g / cm 2 , the working temperature is 100°C, the stirrer stirs at a high speed for 10 minutes, and the stirring speed is 350 rpm.

[0039] The second step is to open the feeding port, put in 0.25 kg of sodium sulfate and 0.35 kg of sodium polyphosphate in turn, close the feeding port, and maintain the working pressure of the reactor at 21g / cm 2 , w...

Embodiment 3

[0043] The composition and percentage by weight of the present embodiment are nano silicon dioxide 18%; Sodium metasilicate 0.5%; Sodium hydroxide 0.8%; Polyethylene oxide 0.2%; Surfactant 0.15%; Stabilizer 0.15%; 0.20%; sodium polyphosphate 0.25%; deionized water 79.9%. To prepare a 100kg sample for trial mixing.

[0044] The first step is to weigh 79.9kg of deionized water and place it in the reactor, heat it to 90-100°C, slowly add 18kg of nano-silica and keep stirring. Add 0.5kg of sodium metasilicate and 0.8kg of sodium hydroxide into the reactor, and close the feeding port to maintain the working pressure of the reactor at 21g / cm 2 , the working temperature is 100°C, the stirrer stirs at a high speed for 10 minutes, and the stirring speed is 550 rpm.

[0045] The second step, open the feeding port, put in 0.2kg of sodium sulfate and 0.25kg of sodium polyphosphate in turn, close the feeding port, and maintain the working pressure of the reactor at 21g / cm 2 , when the w...

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Abstract

The invention relates to a multifunctional concrete curing agent, as well as a preparation method and application thereof. The curing agent is prepared from the components in percentage by weight: 15to 20 percent of nanosilicon dioxide, 0.5 to 1.2 percent of sodium metasilicate, 0.2 to 0.8 percent of sodium hydroxide, 0.1 to 0.2 percent of polyethylene oxide, 0.05 to 0.15 percent of surface active agent, 0.05 to 0.15 percent of stabilizer, 0.15 to 0.25 percent of sulfate, 0.25 to 0.35 percent of phosphate, and 77.8 to 83.12 percent of deionized water. The multifunctional concrete curing agentis sprayed when a fresh concrete is initially set, so that a maintenance enhancement function is realized. Compared with the prior art, the multifunctional concrete curing agent provided by the invention has the advantages of simple production process, low cost, outstanding protection effect, no toxicity and no pollution; the curing agent function is realized at the beginning of concrete pouring,and the protection agent function is realized after the concrete is hardened, so that the capability of the concrete on resisting various medium corrosion is greatly improved, the service life of theconcrete is prolonged, and the multifunctional concrete curing agent belongs to the environmental-friendly building material.

Description

technical field [0001] The invention relates to a material in the technical field of construction engineering and its preparation method and construction application, in particular to a concrete curing agent and its preparation method and application. Background technique [0002] As the most widely used building material, concrete plays a huge role in modern construction projects. The performance of concrete is not only related to the composition and ratio of raw materials, but also the maintenance has an important impact on its performance, especially the impact of the early maintenance environment. In the early stage of concrete pouring, due to sunlight, air circulation and other factors, the moisture on the concrete surface is easy to lose, and it is easy to cause defects such as cracking and sanding. Therefore, the traditional methods of spreading grass bags, plastic films and watering are not only time-consuming and labor-intensive, but also cannot effectively block t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B40/04C04B41/85
CPCC04B40/04C04B41/009C04B41/5015C04B41/85C04B41/5014C04B41/5007C04B41/50C04B41/4853C04B41/4543C04B28/00
Inventor 梁志通王文剑张永光靳玉川窦文彪闫建松贾东伟张金钢张智贤张福刘建宁马聪亮魏永利魏雅坤张伟
Owner HEBEI CONSTR GRP CO LTD
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