Production method of high-speed railway track board not requiring steam curing and special concrete

A technology for steam curing and track slabs, which is applied to early-strength and high-durability prestressed track slab concrete products, production methods and special concrete for high-speed rail track slabs, preparation of steam-free curing, high-strength fields, and can solve complex processes and curing time. Long, compact and other problems, to achieve the effect of simple preparation method, improved quality and production efficiency, and low production cost

Inactive Publication Date: 2017-07-21
陈绪利
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: in the production process of high-speed railway CRTSⅢ concrete track slabs, steam curing is required, the curing time is long, the process i

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The special steam-free concrete for the production of high-speed rail track slabs is characterized in that it is made by mixing and stirring the following components according to the weight ratio: PO42.5R grade ordinary Portland cement: 360 parts; slag powder: 80 parts; High Belite sulfoaluminate cement: 40 parts; activator: 1 part; early strength agent: 1 part; water reducing agent: 1.5 parts; anti-cracking and impermeable composite material: 1 part; 1169.5 parts; water: 87.5 parts.

[0016] The activator is a mixture of calcium oxide, calcium nitrite and calcium sulfate, and the weight ratio of calcium oxide, calcium nitrite and calcium sulfate is 50:20:30.

[0017] The accelerator is a mixture of triisopropanolamine, lithium carbonate and calcium formate, and the weight ratio of triisopropanolamine, lithium carbonate and calcium formate is 50:20:30.

[0018] The described water reducer is a powdery polycarboxylate water reducer.

[0019] The high belite sulfoalumin...

Embodiment 2

[0025] The steam-free maintenance-free concrete for the production of high-speed rail track slabs is characterized in that it is made by mixing and stirring the following components according to the weight ratio: PO42.5R grade ordinary Portland cement: 380 parts; slag powder: 60 parts; High Belite sulfoaluminate cement: 40 parts; activator: 1 part; early strength agent: 1.5 parts; water reducing agent: 1.5 parts; anti-crack and impermeability composite material: 1 part; 1169 parts; water: 87.5 parts.

[0026] The activator is a mixture of calcium oxide, calcium nitrite and calcium sulfate, and the weight ratio of calcium oxide, calcium nitrite and calcium sulfate is 50:30:20.

[0027] The accelerator is a mixture of triisopropanolamine, lithium carbonate and calcium formate, and the weight ratio of triisopropanolamine, lithium carbonate and calcium formate is 50:30:20.

[0028] The water reducer is a powdery amino acid water reducer.

[0029] The high belite sulfoaluminate c...

Embodiment 3

[0035] The special steam-free concrete for the production of high-speed rail track slabs is characterized in that it is made by mixing and stirring the following components according to the weight ratio: PO42.5R grade ordinary Portland cement: 360 parts; slag powder: 80 parts; High Belite sulfoaluminate cement: 40 parts; activator: 1 part; early strength agent: 1.5 parts; water reducing agent: 1.5 parts; anti-crack and impermeability composite material: 1 part; 1169 parts; water: 87.5 parts.

[0036] The activator is a mixture of calcium oxide, calcium nitrite and calcium sulfate, and the weight ratio of calcium oxide, calcium nitrite and calcium sulfate is 50:10:40.

[0037] The accelerator is a mixture of triisopropanolamine, lithium carbonate and calcium formate, and the weight ratio of triisopropanolamine, lithium carbonate and calcium formate is 50:10:40.

[0038] The water reducer is a powdery high-efficiency naphthalene-based water reducer.

[0039] The high belite su...

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PUM

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Abstract

The invention discloses a production method of high-speed railway track board not requiring steam curing and special concrete. The concrete is formed by mixing and stirring the following components in parts by weight: 360 to 400 parts of PO42.5 level R ordinary Portland cement, 40 to 100 parts of a slag powder, 20 to 40 parts of high belite sulphoaluminate cement, 1 to 2 parts of an exciting agent, 1 to 2 parts of an early strength agent, 1 to 1.5 parts of a water reducer, 1 part of a resistance and seepage control composite material, 699.86 parts of sands, 1167 to 1177.14 parts of stones, 87.5 to 88.5 parts of water. The method comprises the following steps: directly putting concrete into a curing box with the temperature of 20 plus or minus 2 DEG C and the humidity of 98 plus or minus 2 percent after the concrete is poured, so as to enable the concrete to be cured for 24 hours; performing relaxation and demolding after the strength of the concrete reaches greater than 80 percent of design strength, and putting the concrete into water to cure the concrete for 24 hours. The method and the concrete have the advantages that steam curing is not required, and the production efficiency of the railway track board is improved.

Description

technical field [0001] The invention relates to a concrete for high-speed rail CRTSⅢ type track slab and its production improvement, specifically a production method and special concrete for high-speed rail track slab without steam curing, which is suitable for preparing non-steam curing, high strength, early strength and high Durable prestressed track slab concrete products. Background technique [0002] At present, with the rapid development of high-speed railways, high-strength concrete is mostly used in the production of high-speed railway CRTS III track slabs, and most of the cement used is 52.5 grade ordinary Portland cement with a higher strength grade. The production method of this high-speed rail CRTSⅢ type track slab includes the following steps: (1), after cleaning the track slab formwork, spray a release agent, and lay out the formwork as required; (2), lay out binding steel bars as required; (3) ), pouring concrete; (4), steam curing: After the concrete pouring...

Claims

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Application Information

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IPC IPC(8): C04B28/06E01B1/00C04B111/20C04B111/27C04B111/34
CPCC04B28/06C04B2111/0075C04B2111/20C04B2111/27C04B2111/343C04B2201/50E01B1/002C04B7/02C04B18/141C04B22/064C04B22/085C04B22/143C04B24/122C04B22/10C04B24/04C04B14/06C04B14/02C04B20/0076C04B2103/302C04B2103/0068
Inventor 陈绪利陈元昊李纪雷
Owner 陈绪利
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