A kind of antifreeze enhancer for slag base material and preparation method thereof

A base material and reinforcing agent technology, applied in the field of concrete, can solve the problems of easy freeze-thaw damage and poor frost resistance, and achieve the effects of improving the frost resistance effect, reducing the frost heave stress, and enhancing the crack resistance performance.

Active Publication Date: 2022-01-04
SHANXI ROAD & BRIDGE CONSTR GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the technical problems such as poor frost resistance and easy freeze-thaw damage of slag-based base materials to a certain extent

Method used

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  • A kind of antifreeze enhancer for slag base material and preparation method thereof
  • A kind of antifreeze enhancer for slag base material and preparation method thereof

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preparation example Construction

[0035] The present invention also provides a method for preparing a frost-resistant enhancer for slag-based base materials, which is used to prepare the above-mentioned frost-resistant enhancer for slag-based base materials, comprising the steps of:

[0036] uniformly mixing the pore filling and stress buffering components, the skeleton support component and the freezing point depression component to form a base material A, adding a reaction medium to the base material A, and continuously stirring to dissolve the base material A in the reaction medium to obtain a mixed solution, Then, let the mixture stand for 22-26h;

[0037] Heat the mixed solution to volatilize the reaction medium in the mixed solution to form the base material B, then add the early-strength improvement component to the base material B, and after mixing evenly, the base material for slag base can be obtained. antifreeze enhancer.

[0038] Specifically, adding a reaction medium to the base material A to ful...

Embodiment 1

[0048] This embodiment provides a method for preparing a frost-resistant enhancer for slag-based base materials, and the specific steps are as follows:

[0049] Mix 50kg of superabsorbent resin, 0.1kg of natural dihydrate gypsum, 9.9kg of fly ash (that is, the mass ratio of gypsum expansion factor:silicon-aluminum base material is 1:99), and 10kg of ethylene glycol to form the base material A, add 35kg of distilled water to the base material A, and continue to stir to dissolve the base material A in the distilled water to obtain a mixed solution, and then leave the mixed solution for 22 hours;

[0050] Heat the mixture at 60°C for 600 minutes until the distilled water is completely volatilized to form base material B. Then, add 10kg of triethanolamine to base material B and mix well to obtain the antifreeze enhancer for slag-based base materials.

Embodiment 2

[0052] The difference between this embodiment and the above-mentioned embodiments is that the preparation method of the antifreeze enhancer for slag-based base materials provided by this embodiment, the specific steps are as follows:

[0053] Mix 50kg of superabsorbent resin, 0.92kg of natural dihydrate gypsum, 9.08kg of fly ash (that is, the mass ratio of gypsum expansion factor: silicon-aluminum base material is 10:99), and 10kg of ethylene glycol to form a base material A, add 35kg of distilled water to the base material A, and continue stirring to dissolve the base material A in the distilled water to obtain a mixed solution, and then leave the mixed solution for 26 hours;

[0054] Heat the mixture at 60°C for 600 minutes until the distilled water is completely volatilized to form base material B. Then, add 10kg of triethanolamine to base material B and mix well to obtain the antifreeze enhancer for slag-based base materials.

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Abstract

The invention provides a frost-resistant enhancer for slag-based base materials and a preparation method thereof. The freeze-resistant enhancer is composed of the following raw materials in parts by weight: 50-80 parts of pore filling and stress buffering components, skeleton support 5-10 parts of components, 5-10 parts of freezing point depressing components, 5-10 parts of early strength enhancing components; wherein, the skeleton support component and the freezing point depressing component are loaded in the pore filling and stress buffering on the components. The antifreeze enhancer provided by the invention can be filled inside the pores of the slag, which can effectively reduce the frost heave stress caused by the freezing of water in the pores, and play the role of buffering the frost heave stress, and form overlapping crystals inside the pores The skeleton restricts the frost heaving behavior of the moisture inside the pores, lowers the freezing point of the moisture in the pores, and then improves the antifreeze effect of the slag-like semi-rigid base material, and reduces the impact of the freeze-thaw cycle on the base material.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to an antifreeze enhancer for slag-based base materials and a preparation method thereof. Background technique [0002] Slag-based base materials mainly refer to semi-rigid base materials with slag as all or part of the aggregate, which generally have the characteristics of high porosity and strong water absorption. Since water becomes ice, the volume increases by about 9%, and an expansion stress of about 2.5 MPa is generated at the same time. If the water content in the slag pores is too much, if the expansion stress generated is greater than the internal strength of the concrete when it is initially set, the concrete will be affected. varying degrees of damage. Therefore, when slag-based base materials are used in cold northern regions, they often have problems such as poor frost resistance and severe freeze-thaw damage. [0003] Since the freeze-thaw damage of concrete is mai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/24C04B24/26C04B103/60
CPCC04B40/0046C04B2103/601C04B24/24C04B22/143C04B18/08C04B24/02C04B24/122C04B24/2641
Inventor 周明凯李庆宏胡富平陈潇高鹏郭华李亮宾段涛
Owner SHANXI ROAD & BRIDGE CONSTR GROUP
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