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Concrete antifreezer and preparation method thereof

A technology of concrete and antifreeze, which is applied in the field of concrete antifreeze, which can solve problems such as failure of normal pumping construction and degradation of concrete construction performance, and achieve the effects of improving the antifreeze effect, reducing the water-cement ratio, and increasing the amount of air-entrainment

Inactive Publication Date: 2009-10-14
JIANGSU NIGAO SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the development of concrete engineering, the problem of concrete winter construction has become increasingly prominent in many places. After the traditional antifreeze is added, the concrete construction performance is reduced, and normal pumping construction cannot be performed.

Method used

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  • Concrete antifreezer and preparation method thereof
  • Concrete antifreezer and preparation method thereof
  • Concrete antifreezer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Prepare materials according to the following mass ratio

[0013]

[0014] First add naphthalenesulfonic acid formaldehyde condensate and aldehyde ketone sulfonated condensate, adjust the temperature to 30°C, stir for ten minutes, add sodium gluconate, continue stirring for 15 minutes, and finally add the air-entraining agent prepared according to the formula, calcium nitrate and Calcium nitrite, stir for 30 minutes, add water to adjust the concentration, stir for another 15 minutes, and discharge.

Embodiment 2

[0016] Prepare materials according to the following mass ratio

[0017]

[0018] First add naphthalenesulfonic acid formaldehyde condensate and aldehyde ketone sulfonated condensate, adjust the temperature to 30°C, stir for ten minutes, add sodium gluconate, continue stirring for 15 minutes, and finally add the air-entraining agent prepared according to the formula, calcium nitrate and Calcium nitrite, stir for 30 minutes, add water to adjust the concentration, stir for another 15 minutes, and discharge.

Embodiment 3

[0020] Prepare materials according to the following mass ratio

[0021]

[0022]

[0023] First add naphthalenesulfonic acid formaldehyde condensate and aldehyde ketone sulfonated condensate, adjust the temperature to 30°C, stir for ten minutes, add sodium gluconate, continue stirring for 15 minutes, and finally add the air-entraining agent prepared according to the formula, calcium nitrate and Calcium nitrite, stir for 30 minutes, add water to adjust the concentration, stir for another 15 minutes, and discharge.

[0024] After testing, the product performance in the embodiment of the present invention 1 is as follows:

[0025] Table 1: Properties of concrete mixture and hardened concrete

[0026]

[0027]

[0028] Note: The dosage is 4% (reduced solid content) Cement: benchmark cement

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Abstract

The invention relates to a concrete antifreezer which is prepared by water reducing mother liquid, air entraining agent, subcritical hardening promoter, slump retaining agent, etc. The concrete antifreezer can be used for concrete pumping in winter, improves the pumpability of concrete on the premise of achieving the freeze-proof effect, solves the problem that concrete slump constant is lost after the concrete is added with the traditional antifreezer, has good effect, and enhances the durability of concrete.

Description

technical field [0001] The invention relates to a concrete antifreeze agent, which belongs to the field of building materials. Background technique [0002] In recent years, with the development of concrete engineering, the problem of concrete winter construction has become increasingly prominent in many places. After the traditional antifreeze is added, the concrete construction performance is reduced, and normal pumping construction cannot be performed. Therefore, there is an urgent need for an antifreeze agent that can provide both high-efficiency antifreeze effect and excellent construction performance. Contents of the invention [0003] In order to overcome the above-mentioned defects, the technical problem to be solved by the present invention is to provide a concrete antifreeze agent with functions of reducing water, entraining air, maintaining slump and preventing freezing. [0004] In order to overcome the defects in the background technology, the technical solut...

Claims

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Application Information

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IPC IPC(8): C04B24/22C04B22/08C04B103/60
CPCC04B2111/00146C04B2103/601C04B40/0039
Inventor 陈红根金卫民王道正王文军张腊琴邹建东
Owner JIANGSU NIGAO SCI & TECH
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