High-durability high-activity powder concrete electrical pole

A technology of active powder and concrete, applied in the field of electric poles, can solve problems such as short service life, increased self-weight, and increased costs

Inactive Publication Date: 2007-09-12
NORTHEAST DIANLI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since this kind of pole and tower structure is a metal structure, it is prone to corrosion, so the service life is short and the maintenance workload is heavy.
However, the strength of traditional ordinary concrete poles is n...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] The high-durability and high-strength RPC pole of the present invention is characterized in that: the RPC pole is made of the following mass ratio (kg / m 3 The composition of raw materials:

[0074] The diameter is 0.22mm, the length is 12~15mm, the steel fiber 100~140 with copper-coated surface, the ordinary Portland cement is 690~720, the average particle size is 0.31μm silicon powder 160~200, non-naphthalene-based high-efficiency reduction Water agent 21-25, water 170-190, fine quartz sand 1110-1190 with particle size of 0.16-1.25mm.

[0075] The above-mentioned RPC poles have a compressive strength of 180-200 MPa; a tensile strength of 15-20 MPa; impermeability greater than P16, and the dynamic elastic modulus and quality of the RPC specimen in 600 rapid freeze-thaw tests have no loss.

[0076] For the above-mentioned RPC pole, the silicon powder has a density of 2.214×10 3 Kg / m 3 , the specific surface area is 143100cm 2 / g, the composition of silicon powder is ...

Embodiment 2

[0083] The preparation method of the high-durability and high-strength RPC pole of the present invention is carried out in sequence as follows, and the required raw materials are in kg / m 3 count:

[0084] ① Dissolve 21kg of non-naphthalene-based superplasticizer (SUP 34105 non-naphthalene-based superplasticizer) with water (dissolve in water first to prevent uneven stirring when directly added to other raw materials, the same below), and set aside.

[0085] ②Add 100kg of fine circular copper-plated steel fibers with a diameter of 0.22mm and a length of 12-15mm and 1110kg of fine quartz with a particle size of 0.16-1.25mm into the mixer; the particle size is 0.16≤~<0.315 mm fine sand 340kg, particle size 0.315≤~<0.63mm medium sand 690kg, coarse sand 80kg with particle size 0.63≤~<1.25mm, stir until uniform, and the material is ready for use; then

[0086] ③Add 690kg of No. 60 ordinary Portland cement and 160kg of silica fume with an average particle size of 0.31 μm (the densit...

Embodiment 3

[0091] The preparation method of the high-durability and high-strength RPC pole of the present invention is carried out in sequence as follows, and the required raw materials are in kg / m 3 count:

[0092] ① Dissolve 25kg of non-naphthalene-based superplasticizer (FDT-6 non-naphthalene-based superplasticizer) in water; set aside.

[0093]② Add 140kg of copper-plated steel fibers with a steel fiber diameter of 0.22mm and a length of 12-15mm, and 1190kg of fine quartz particles with a particle size of 0.16-1.25mm into the mixer; the particle size is 0.16≤~ <0.315mm fine sand 370kg, particle size 0.315≤~<0.63mm medium sand 720kg, particle size 0.63≤~<1.25mm coarse sand 100kg, stir until uniform, the material is ready for use; then

[0094] ③Add 720kg of No. 42.5 ordinary Portland cement to the spare material in step ②, and its fineness is 3400cm 2 / g, the average particle size is 0.31μm silicon powder 200kg (its density is 2.214×10 3 Kg / m 3 , the specific surface area is 14310...

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Abstract

The invention relates to a RPC electric pole. Percentage of its quality quotient is: 100-140 portion thin round steel fiber with a diameter of 0.22mm, a length of 12-15mm and copperized surface, 21-25 portion water reducing agent, 170-190 portion water and 1110-1190 portion slender quartz grain with a grain size of 0.16-1.25mm. The steel fiber and slender quartz grain are added into agitator for homogenization, add cement and silicon powder for homogenization, then, add water reducing agent and residue water for homogenization to get RPC. Prime RPC into pattern matching prestressed reinforcement and centrifugate it. The finishsed product is conserved in 70-80deg.C steam for 48 hours and demould to achieve high endurance high intensity RPC electric pole. Its compression strength is above 200MPa, tensile strength is 15MPa and impermeability is above P16.

Description

technical field [0001] The invention relates to an electric pole in transmission line engineering, in particular to a high-durability and high-strength active powder concrete electric pole made of active powder concrete and used in 500kV and other ultra-high voltage transmission lines. Background technique [0002] Reactive Powder Concrete (RPC) is a new type of concrete, which is being developed and applied at home and abroad. [0003] The "Research to Improve Construction Productivity" (CPAR) program in the United States and the RPC products produced by France and the U.S. Army Corps of Engineers include: industrial production of concrete products such as prefabricated beams and trusses of long-span prestressed concrete beams, pressure fluid pipes, etc. It not only improves the working pressure of the pipeline, but also greatly enhances the corrosion resistance to aggressive media. [0004] In France, reactive powder concrete is used in prestressed co...

Claims

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Application Information

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IPC IPC(8): E04H12/12B28C7/04B28B21/32C04B28/04C04B14/48C04B14/04C04B14/06
CPCC04B28/04C04B20/1062Y02W30/91C04B14/06C04B18/146C04B20/0068C04B20/008C04B20/0092C04B32/02C04B40/02C04B40/024C04B2103/302C04B14/48
Inventor 鞠彦忠屈成忠
Owner NORTHEAST DIANLI UNIVERSITY
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