Modified lithium-based concrete sealing curing agent and preparation method thereof

A sealing and curing agent, concrete technology, applied in the direction of alkali metal silicate paint, coating, etc., can solve the problems of concrete surface strength, general waterproof performance, easy to be corroded, etc.

Pending Publication Date: 2021-09-14
浙大宁波理工学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the common lithium-based sealing and curing agents currently on the market still have certain problems in terms of performance and preparation technology. After the curing agent is used, the strength and waterproof performance of the concrete surface are still relatively average, and it is easy to be co

Method used

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  • Modified lithium-based concrete sealing curing agent and preparation method thereof
  • Modified lithium-based concrete sealing curing agent and preparation method thereof
  • Modified lithium-based concrete sealing curing agent and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0042] Example 1

[0043] A modified lithium-based concrete sealer, a mass percentage, prepared from the following ingredients: liquid lithium silicate, 30wt%, sodium silicate 1wt%, the neutral silica sol (average particle size 15nm) surfactant 0.5wt %, 0.5 wt% dispersant, 0.5 wt% antifoaming agent, fluorosilicate 5 wt%, 0.05 wt% graphene oxide, the balance deionized water; the present embodiment, the surfactant is sodium stearate, dispersing PEG 200 is polyethylene glycol, food grade defoamer silicone defoamer, fluoro silicates MgSiF 6 , Graphene oxide sheets having a thickness of 0.5nm, flake diameter of 7μm.

[0044] Preparation Example Modified Lithium concrete sealer of the present embodiment, the following preparation steps:

[0045] (1) Accurately weigh the raw materials;

[0046] (2) the liquid lithium silicate, sodium silicate, fluorosilicate, and the graphene oxide were mixed and stirred 60 ℃ 60min, cooled to room temperature, stirring to obtain a mixed solution;

[0047...

Example Embodiment

[0049] Example 2

[0050] A modified lithium-based concrete sealer, a mass percentage, prepared from the following ingredients: liquid lithium silicate, 40wt%, sodium silicate 5wt%, 30 wt alkaline silica sol (average particle size 15nm)%, a surfactant agent 1.25wt%, dispersant 0.75wt%, an antifoaming agent 1.25wt%, fluorosilicate 3wt%, graphene oxide 0.02wt%, balance deionized water; the present embodiment, the surfactant is sodium dodecyl sulfate sodium, polyethylene glycol dispersing agent is PEG 200, food grade defoamer silicone defoamer, fluoro silicates MgSiF 6 , Graphene oxide sheets having a thickness of 2nm, flake diameter of 8μm.

[0051] Preparation Example Modified Lithium concrete sealer of the present embodiment is the same as in Example 1.

Example Embodiment

[0052] Example 3

[0053] A modified lithium-based concrete sealer, in percentage by mass, is made from the following raw materials: liquid lithium silicate, 50wt%, sodium silicate 8wt%, 20 wt alkaline silica sol (average particle size 15nm)%, a surfactant agent 2wt%, dispersant 1wt%, defoamer 2wt%, fluorosilicate 10wt%, graphene oxide 0.02wt%, balance deionized water; embodiment of the present embodiment is a surfactant sodium dodecyl benzene sulfonate dispersing agent is polyethylene glycol PEG 200, food grade defoamer silicone defoamer, fluoro silicates CaSiF 6 , Graphene oxide sheets having a thickness of 0.8nm, flake diameter of 6μm.

[0054] Preparation Example Modified Lithium concrete sealer of the present embodiment is the same as in Example 1.

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Abstract

The invention discloses a modified lithium-based concrete sealing curing agent and a preparation method thereof, and relates to the technical field of building materials, the modified lithium-based concrete sealing curing agent comprises the following raw materials by mass: 30-50 wt% of liquid lithium silicate, 0-10 wt% of sodium silicate, 0-30 wt% of silica sol, 0.5-2 wt% of a surfactant, 0.5-1 wt% of a dispersant, 0.5-2 wt% of an antifoaming agent, 3-15 wt% of fluosilicate, 0.02-0.3 wt% of graphene oxide and the balance of water, wherein the content of the sodium silicate and the content of the silica sol are not zero, and the prepared sealing curing agent is good in comprehensive performance, capable of effectively improving the structural strength, abrasion resistance, water resistance and other performance of concrete and high in commercial and popularization value.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a modified lithium-based concrete sealing and curing agent and a preparation method thereof. Background technique [0002] In modern buildings, concrete is the most widely used building structure material. It is a mixture of cementitious materials, granular aggregates, water, and chemical admixtures and mineral admixtures in appropriate proportions. The material has the advantages of economy, durability, fire resistance and high compression resistance. Nowadays, as highways, bridges, ocean development, tunnel construction and other fields are developing in the direction of complexity, large-scale, and convenience, the requirements for the performance of concrete are becoming more and more stringent and demanding. During the hardening process of concrete Among them, because its surface and internal structure contain a large number of interpenetrating pores, during the ...

Claims

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Application Information

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IPC IPC(8): C09D1/04C09D7/61C09D7/63C04B41/68
CPCC09D1/04C09D7/61C09D7/63C04B41/5024C04B41/68C04B41/5018C04B41/5001C04B41/46C04B41/4896C04B41/4922
Inventor 潘崇根陈娜何静姿李旭臧家伟朱大勇陈景阳
Owner 浙大宁波理工学院
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