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High durability concrete and preparation method thereof

A durable concrete and glass fiber technology, applied in the field of polymer material science, can solve the problems of poor compressive strength and flexural strength of photovoltaic pavement, poor concrete strength, and short service life, so as to improve durability and compressive strength High and low energy effects

Active Publication Date: 2018-11-23
湖北联建新材料有限公司
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  • Application Information

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Problems solved by technology

The photovoltaic pavement prepared by this invention has poor compressive strength and flexural strength and short service life
[0004] The mechanical properties and durability of concrete will be affected by factors such as chemical corrosion, carbonization and microorganisms in the environment. At present, concrete still has shortcomings such as poor strength, low frost resistance, low water permeability, and easy cracking. Transparent concrete has high requirements on durability. Therefore, it is urgent to design a new type of durable concrete with high strength, good frost resistance, small drying shrinkage, and not easy to crack, so as to meet the needs of high-quality construction projects and become an urgent solution in this field. technical problems

Method used

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  • High durability concrete and preparation method thereof
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preparation example Construction

[0029] As a preferred preparation method, the preparation method of the 4-amino-1-butylpyridine chloride salt ionic liquid is as follows: dissolve 4-aminopyridine in acetonitrile, heat to reflux in an oil bath at 65°C, and then add 1-chlorobutyl Alkane, the molar ratio of 4-aminopyridine to 1-chlorobutane is 1:1.5, condensed and refluxed for 12 hours under the protection of nitrogen to obtain 4-amino-1-butylpyridinium chloride salt ionic liquid.

[0030] As a kind of preferred preparation method, the preparation method of described a kind of high durability concrete comprises the steps:

[0031] S1. Weigh all the raw materials according to the weight percentage, mix the weighed epoxy resin, curing agent, polyethylene glycol, heat to 110-130 ° C, and stir to make the epoxy resin, curing agent, polyethylene glycol Ethylene glycol is completely dissolved to form a transparent solution to obtain a resin compound;

[0032] S2. Put the graphene oxide-glass fiber-pyridine ionic liqu...

Embodiment 1

[0037] A preparation method of 4-amino-1-butylpyridine chloride salt ionic liquid is as follows: 4-aminopyridine is dissolved in acetonitrile, heated to reflux in an oil bath at 65°C, and then 1-chlorobutane, 4-aminopyridine and 1 -The molar ratio of chlorobutane is 1:1.5, condensed and refluxed for 12 hours under the protection of nitrogen to obtain 4-amino-1-butylpyridinium chloride salt ionic liquid.

[0038] The preparation method of described graphene oxide-glass fiber-pyridine ionic liquid composite material, comprises the steps:

[0039] S1. Weigh 1g of graphite powder and mix it with 50mL of strong oxidizing acid, treat it under 80kHz ultrasonic wave for 4 hours, then heat it to 80°C, add 100g of dry glass fiber, stir and reflux for 24 hours, centrifuge, and wash the solid with water to medium properties, vacuum drying at 60°C to obtain carboxylated graphene oxide-glass fiber composites;

[0040] S2, adding the carboxylated graphene oxide-glass fiber composite materia...

Embodiment 2

[0051] This embodiment provides a high-durability concrete. Compared with Embodiment 1, the difference is that it is made of the following components in weight percentage: 25% epoxy resin; 1% curing agent; 54% glass particles; oxidation Graphene-glass fiber-pyridine ionic liquid composite material 10%; polyethylene glycol 10%.

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Abstract

The invention discloses high durability concrete and a preparation method thereof. The high durability concrete is prepared from the following components by weight percent: 25-35% of epoxy resin, 1-5%of a curing agent, 40-55% of glass particles, 5-10% of a graphene oxide-glass fiber-pyridine ionic liquid composite material and 5-10% of polyethylene glycol. The graphene oxide-glass fiber-pyridineionic liquid composite material is added into the concrete; on the one hand, ionic liquid can improve the frost resistance of the concrete due to the unique characteristics of low melting point, highstability, strong dissolving ability, low vapor pressure and wide potential window; furthermore, due to the good solubility of the ionic liquid, the compatibility of all components can be improved, and the workability of the concrete is improved; graphene oxide has good ductility, thus improving the flexural-tensile property of the concrete, and further improving the performance of the concrete; due to the interaction forces such as ionic bonds, covalent bonds, hydrogen bonds and van der waals forces between the components, the internal structure of the concrete is more stable, the durabilityof the concrete is improved, and the service life of the concrete is prolonged.

Description

technical field [0001] The invention relates to the field of polymer material science, in particular to a high-durability concrete and a preparation method thereof. Background technique [0002] The load-bearing high-speed photovoltaic pavement converts the collected solar energy into electrical energy, which has been widely studied in recent years. The top layer of the photovoltaic road is transparent concrete similar to frosted glass, which allows sunlight to convert light energy into electrical energy through the solar cells below. At present, there are three main forms of transparent concrete preparation in China. One is to prepare transparent concrete by pouring cement mortar outside the prefabricated resin block; the other is to pour cement or asphalt concrete around the fixed optical fiber to prepare light-conducting concrete; It is mixed with cement as a binder and aggregate to prepare translucent concrete. The light transmittance of concrete prepared by the above m...

Claims

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Application Information

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IPC IPC(8): C04B26/14C04B111/20C04B111/80
CPCC04B26/14C04B2111/0075C04B2111/29C04B2111/805C04B2201/50C04B2201/52C04B14/22C04B14/024C04B14/42C04B24/005C04B24/32C04B24/00
Inventor 周玄沐周晓阳
Owner 湖北联建新材料有限公司