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Steam-curing-free corrosion-resistant concrete pole and preparation method thereof

A technology for corrosion-resistant concrete and no steam curing, applied in the field of building materials, can solve the problems of high energy consumption of steam curing, adverse effects on the durability of concrete, accelerated concrete hardening, etc., so as to reduce the links of steam curing, achieve significant economic benefits, and improve The effect of corrosion resistance

Inactive Publication Date: 2019-01-22
UNIV OF JINAN +1
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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 corrosion-resistant concrete pole and preparation method thereof
  • Steam-curing-free corrosion-resistant concrete pole and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The concrete electric pole provided in this embodiment is applied in a chloride-salt environment and includes a reinforced skeleton of the electric pole, concrete filled and wrapped around the reinforced skeleton, and a waterproof coating, wherein the surface of the reinforced skeleton is covered with an evenly distributed anticorrosion layer. The pole is prepared through the following steps:

[0031] (1) Preparation of steel skeleton

[0032] First, soak the steel bar surface with 3mol / L NaOH solution for 10 minutes, then spray silane antirust agent on the surface, and the initial spraying amount is 10g / cm 2 , and finally use the anti-rust steel bars to make the skeleton structure of the pole, and put it into the mold that has been cleaned;

[0033] (2) Preparation of concrete

[0034]The concrete provided in this embodiment includes: early-strength cementitious material, fine aggregate, coarse aggregate, water reducer, non-chloride salt early-strength agent, anti-co...

Embodiment 2

[0042] The concrete electric pole provided in this embodiment is applied in a sulfate environment, and includes a reinforced skeleton of the electric pole, concrete filled and wrapped around the reinforced skeleton, and a waterproof coating, wherein the surface of the reinforced skeleton is covered with an evenly distributed anticorrosion layer. The pole is prepared through the following steps:

[0043] (1) Preparation of steel skeleton

[0044] First, soak the steel bar surface with 3mol / L NaOH solution for 5min, and then spray silane antirust agent on the surface, the initial spraying amount is 5g / cm 2 , and finally the steel bars after anti-rust treatment are made into pole skeleton structures of different diameters and lengths according to the design requirements, and put them into the cleaned mold;

[0045] (2) Preparation of concrete

[0046] The concrete provided in this embodiment includes: early-strength cementitious material, fine aggregate, coarse aggregate, water...

Embodiment 3

[0053] In this embodiment, except for using nano-silicon instead of some silica fume, other conditions and parameters are the same as in Example 1, wherein the addition of nano-silicon is 1.0% of the total early-strength gelling 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 ); the curing temperature is 20°C, 30°C, 40°C, and the curing time is 24 hours;

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Abstract

The invention belongs to the field of construction materials and relates to a concrete pole and a preparation method thereof. The concrete pole comprises a pole steel reinforcement framework, concretefor filling and wrapping the steel reinforcement framework and a waterproof coating. The surface of the steel reinforcement framework is coated with corrosion-resistant layers in uniform distribution. The concrete pole is prepared by steps of steel reinforcement framework preparation, concrete preparation, concrete pole preparation and concrete pole surface corrosion-resistant treatment. Performances of the obtained concrete pole meet requirements of GB / T 4623-2014, production cost is sharply reduced on the basis that formwork transfer efficiency and performances of the concrete pole are guaranteed and improved, the national requirements on energy saving, emission reduction and environmental protection are met, and high economic benefits and social benefits are achieved.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a concrete pole and a preparation method thereof. Background technique [0002] With irreplaceable advantages such as low cost, convenient construction, long service life and maintenance-free, concrete poles are widely used in overhead power transmission and transformation lines, railway catenary pillars, broadcasting communications, municipal lighting and other projects. Since my country produced the first square solid cement pole in 1924, my country's cement concrete poles have a history of more than 90 years. At present, my country has become the country that uses the most concrete poles in the world. [0003] General concrete poles are prefabricated concrete components made of prestressed steel bars and concrete as the main materials, pretensioned prestressed centrifugal molding process, and steam curing. Due to the vast territory of our country, the climate and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04H12/12C04B28/04C04B41/61C04B111/26
CPCC04B28/04C04B41/009C04B41/4543C04B41/61C04B2111/00008C04B2111/26C04B2201/50E04H12/12C04B18/146C04B18/141C04B14/068C04B18/12C04B24/24C04B22/085C04B32/02C04B22/126C04B24/18C04B14/04
Inventor 张秀芝张枫刘同军董青徐笃军王娜孙海龙姜葱葱程新
Owner UNIV OF JINAN
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