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Steam curing-free anti-corrosion concrete column and preparation method thereof

A technology of corrosion-resistant concrete and concrete columns, which is applied in the direction of columns, pier columns, pillars, etc., can solve the problems of high energy consumption of steam curing, adverse effects on concrete durability, and accelerated concrete hardening, so as to reduce the link of steam curing and economical Significant benefits and improved corrosion resistance

Pending Publication Date: 2019-02-26
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while steam curing accelerates concrete hardening and improves early strength, it also adversely affects the durability of concrete, and steam curing consumes a lot of energy.

Method used

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  • Steam curing-free anti-corrosion concrete column and preparation method thereof
  • Steam curing-free anti-corrosion concrete column and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The concrete column provided by this embodiment is applied in a chloride salt environment and includes a column steel skeleton, concrete filled and wrapped around the steel skeleton and a waterproof coating, wherein the surface of the steel skeleton is covered with an evenly distributed anticorrosion layer. The column is prepared through the following steps:

[0035] (1) Preparation of steel skeleton

[0036] First, soak the steel bar surface with 3mol / L NaOH solution for 10min, then spray silane antirust agent on the surface, the initial spraying amount is 10g / cm 2 , and finally use the anti-rust steel bars to make the column skeleton structure, and put it into the mold that has been cleaned;

[0037] (2) Preparation of concrete

[0038] The concrete provided by the present embodiment comprises: early strength cementitious material, fine aggregate, coarse aggregate, water reducer, non-chloride salt early strength agent, anticorrosion agent and water, and water cement...

Embodiment 2

[0046] The concrete column provided in this embodiment is applied in a sulfate environment and includes a column steel skeleton, concrete filled and wrapped around the steel skeleton, and a waterproof coating, wherein the surface of the steel skeleton is covered with an evenly distributed anticorrosion layer. The column is prepared through the following steps:

[0047] (1) Preparation of steel skeleton

[0048] First, soak the steel bar surface with 3mol / L NaOH solution for 5 minutes, then spray silane antirust agent on the surface, and the initial spraying amount is 5g / cm 2 , and finally the steel bars after anti-rust treatment are made into column skeleton structures with different diameters and different lengths according to the design requirements, and put them into the cleaned mold;

[0049] (2) Preparation of concrete

[0050] The concrete provided by the present embodiment comprises: early strength cementitious material, fine aggregate, coarse aggregate, water reducer...

Embodiment 3

[0057] Present embodiment is except using nano-silicon substitution rate part silica fume, other conditions and parameters are all identical with embodiment 1, and wherein the addition of nano-silicon is 1.0% of total early-strength cementitious material quality, i.e. 4.65kg / m 3 , and the sum of the added amount of nano silicon and silica fume is 37kg / m 3 ); where the curing temperature is 20°C, 30°C, 40°C, and the curing time is 24 hours respectively;

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Abstract

The invention belongs to the field of building materials, and relates to a concrete column and a preparation method thereof. The column consists of a column reinforcing steel bar skeleton, concrete filling and wrapping the reinforcing steel bar skeleton and a waterproof coating layer, wherein the surface of the reinforcing steel bar skeleton is covered with a uniformly distributed anticorrosive coating. The column is prepared by four steps: preparation of the reinforcing steel bar skeleton, preparation of concrete, preparation of the concrete column and anticorrosive treatment of the concretecolumn surface. The performance of the obtained column meets the requirements of practical application, the purpose of greatly reducing the production cost is achieved based on guaranteeing and improvement of the performance of the concrete column and the handling efficiency of a template, the requirements of energy saving, emission reduction and environmental protection are put forward by the state, and the concrete column has good economic and social benefits.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a concrete column and a preparation method thereof. Background technique [0002] Building industrialization is an important development direction in the field of residential construction in my country. It can not only effectively shorten the construction period, but also greatly reduce building energy consumption and construction waste, which is in line with the development concept of energy-saving and environment-friendly buildings. The prefabricated integral structure is the main technical means to realize the industrialization of construction. At present, the prefabricated concrete structure has been widely used in countries all over the world, but the hybrid or combined prefabricated structure is rarely used, which is mainly caused by the hybrid structure or combined structure. The node structure is complex and the connection is inconvenient. [0003] With the rapid develo...

Claims

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Application Information

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IPC IPC(8): C04B28/08C04B22/08C04B22/12C04B20/02C04B20/10C04B41/60B28B21/30E04C3/34
CPCB28B21/30C04B20/023C04B20/1051C04B22/085C04B22/126C04B28/08C04B41/455C04B41/60E04C3/34C04B7/02C04B18/146C04B22/002C04B14/068C04B14/02C04B24/24C04B30/02C04B24/18C04B14/34
Inventor 张秀芝董青孙海龙杨清张翔姜葱葱程新
Owner UNIV OF JINAN
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