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Anti-seepage and anti-corrosion concrete and preparation method thereof

A concrete and anti-corrosion technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of calcium ion migration, frosting, etc.

Inactive Publication Date: 2021-01-29
陈永霞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the continuous attack of carbon dioxide and moisture in the environment that existing concrete products are susceptible to during long-term use, which easily leads to the migration of incompletely hydrated calcium ions in the concrete to the concrete surface, thereby causing pancreas. Frost defects and deficiencies, provide a kind of anti-seepage, anti-corrosion concrete and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Pretreatment of graphene oxide:

[0034] In parts by weight, 4 parts of polyethylene glycol, 30 parts of (N-amidino) dodecyl acrylamide, 160 parts of water, and 80 parts of graphene oxide are successively mixed with polyethylene glycol, water and ( Pour N-amidino) dodecyl acrylamide into the reaction kettle, and then ultrasonically disperse for 40 minutes under the condition of ultrasonic frequency of 45 kHz, then add graphene oxide, continue to ultrasonically disperse for 30 minutes under the condition of ultrasonic frequency of 50 kHz, and then At a temperature of 85°C, heat and reflux for 8 hours, and then filter, wash and dry to obtain pretreated graphene oxide;

[0035] Modification of graphene oxide:

[0036] After dispersing the pretreated graphene oxide in water, at a temperature of 25 ° C, continue to feed carbon dioxide gas at a rate of 10 L / min for 10 minutes, then add a chelating agent with 10% of the pretreated graphene oxide mass, and use a stirrer at 300...

Embodiment 2

[0043] Pretreatment of graphene oxide:

[0044] In parts by weight, successively take 5 parts of polyethylene glycol, 35 parts of (N-amidino) dodecyl acrylamide, 170 parts of water, 100 parts of graphene oxide, first mix polyethylene glycol, water and ( Pour N-amidino) dodecyl acrylamide into the reaction kettle, and then ultrasonically disperse for 50 minutes under the condition of ultrasonic frequency of 48 kHz, then add graphene oxide, continue to ultrasonically disperse for 40 minutes under the condition of ultrasonic frequency of 55 kHz, and then At a temperature of 87°C, heat and reflux for 10 hours, and then filter, wash and dry to obtain pretreated graphene oxide;

[0045] Modification of graphene oxide:

[0046] After dispersing the pretreated graphene oxide in water, at a temperature of 30°C, continue to feed carbon dioxide gas at a rate of 20L / min for 20min, then add a chelating agent with a mass of 12% of the pretreated graphene oxide, and use a stirrer at 400r A...

Embodiment 3

[0053] Pretreatment of graphene oxide:

[0054] In parts by weight, 8 parts of polyethylene glycol, 40 parts of (N-amidino) dodecyl acrylamide, 180 parts of water, and 120 parts of graphene oxide are successively mixed with polyethylene glycol, water and ( Pour N-amidino) dodecyl acrylamide into the reaction kettle, and then ultrasonically disperse for 60 minutes under the condition of ultrasonic frequency of 50 kHz, then add graphene oxide, continue to ultrasonically disperse for 60 min under the condition of ultrasonic frequency of 60 kHz, and then At a temperature of 90°C, heat and reflux for 12 hours, then filter, wash and dry to obtain pretreated graphene oxide;

[0055] Modification of graphene oxide:

[0056] After dispersing the pretreated graphene oxide in water, at a temperature of 35°C, continue to feed carbon dioxide gas at a rate of 30L / min for 30min, then add a chelating agent with 15% of the pretreated graphene oxide mass, and use a stirrer at 500r After stirr...

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to anti-seepage and anti-corrosion concrete and a preparation method thereof. The concrete product developed by the method comprises cement and graphene oxide of which the mass is 10-15% of that of the cement, a polymer is deposited between the graphene oxide layers; the molecular structure of the polymerhas an amidine group; and the amidine group is positioned on the side chain of the polymer molecular chain. The polymer is formed by in-situ polymerization of a monomer between the graphene oxide layers; in addition, the concrete also comprises a chelating agent; and the chelating agent is deposited between the graphene oxide layers. In the actual use process, the obtained product has excellent anti-seepage and anti-corrosion performance, and the service life of concrete can be effectively prolonged.

Description

technical field [0001] The invention belongs to the technical field of building materials. More specifically, it relates to an anti-seepage and anti-corrosion concrete and a preparation method thereof. Background technique [0002] Today, with the rapid economic development, the scale of cities continues to expand, the problem of land shortage is in sight, and the utilization rate of underground space is getting higher and higher. Large-scale underground basements are one of the representatives, but cracks may occur after large-scale concrete pouring, due to groundwater The role of concrete materials for underground construction needs to solve the problem of concrete impermeability. With the development and utilization of underground space, people pay more and more attention to the self-waterproofing of underground engineering structures. Adding compacting agents to underground large-area concrete projects is an effective measure to improve the impermeability of concrete. ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C01B32/198C04B111/20
CPCC04B28/04C04B2111/00293C04B2111/20C01B32/198C04B14/022C04B2103/302C04B22/10C04B14/06
Inventor 陈永霞
Owner 陈永霞
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