A kind of manufacturing method of subway evacuation platform board

An evacuation platform and a manufacturing method technology, applied in the field of building materials, can solve the problem that the subway evacuation platform plate is difficult to meet the use requirements, and achieve the effects of good anti-seepage and anti-freezing performance, long service life and good cost advantage

Active Publication Date: 2016-04-27
BEIJING ZHONGYANYI ENG TECH DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a method for making a subway evacuation platform to solve the problem that the existing subway evacuation platform is difficult to meet the use requirements

Method used

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  • A kind of manufacturing method of subway evacuation platform board
  • A kind of manufacturing method of subway evacuation platform board
  • A kind of manufacturing method of subway evacuation platform board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The raw materials used in the following examples are:

[0030] The composition ratio of high-activity admixture is: microsilica fume, S95 mineral powder, and high-activity catalyst in a weight ratio of 4:4:1; the composition ratio of high-activity catalyst is: defoamer, triethanolamine, sodium formate, sulfur The aluminate cement is 1:0.02:0.06:0.5 by weight. The micro-silica powder is selected with an average particle size of 0.30 μm, SiO 2 Microsilica fume with a content ≥ 92%; the defoamer is a powdered defoamer based on organically modified siloxane; the sulphoaluminate cement is 42.5 grade rapid hardening sulphoaluminate cement;

[0031] Quartz sand is a continuous graded fine quartz sand with three particle sizes of 1.25-0.63mm, 0.63-0.315mm and 0.315-0.165mm, SiO 2 The content is greater than 97%.

[0032] The steel fiber is a straight galvanized steel fiber with a circular cross-section and a straight end with a tensile strength greater than 2850MPa, with a d...

Embodiment 2

[0044] An active powder concrete evacuation platform slab is formed by combining cement, high-activity admixture, quartz sand, steel fiber, water reducing agent and water in a certain proportion and pouring steel mesh. The dosage of each component of the evacuation platform board is: cement 670kg, high activity admixture 230kg, quartz sand 1320kg, steel fiber 45kg, water reducing agent 13.5kg, water 174kg, the measurement unit is kg / m 3 .

[0045] The manufacture method of subway evacuation platform plate is used except that each component content is different from embodiment 1, and other are all the same.

[0046] The performance test results of the subway evacuation platform plate prepared in embodiment 2 are shown in table 2.

[0047] Table 2

[0048]

Embodiment 3

[0050] An active powder concrete evacuation platform slab is formed by combining cement, high-activity admixture, quartz sand, steel fiber, water reducing agent and water in a certain proportion and pouring steel mesh. The dosage of each component of the evacuation platform board is: cement 710kg, high activity admixture 240kg, quartz sand 1300kg, steel fiber 45kg, water reducing agent 28kg, water 167kg, the measurement unit is kg / m 3 .

[0051] The manufacture method of subway evacuation platform plate is used except that each component content is different from embodiment 1, and other are all the same.

[0052] The performance test results of the subway evacuation platform plate prepared in embodiment 3 are shown in table 3.

[0053] table 3

[0054]

[0055]

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Abstract

The invention discloses a manufacturing method of a subway evacuation platform plate. The method comprises the following steps: batching, namely weighing raw materials comprising 655 to 735 kg / m<3> of cement, 195 to 245 kg / m<3> of high-activity admixture, 1180 to 1320 kg / m<3> of quartz sand, 40 to 70 kg / m<3> of steel fibers, 20 to 28 kg / m<3> of water reducing agent and 165 to 179 kg / m<3> of water; evenly stirring the raw materials to obtain concrete; molding, namely evenly pouring the concrete into a mould in which steel bar meshes are arranged; vibrating the mould after being filled with concrete mixtures to finally obtain a plate blank; and curing, namely standing and carrying out primary curing, final curing and natural curing on the plate blank so as to form the subway evacuation platform plate. According to the method disclosed by the embodiment of the invention, the manufactured subway evacuation platform plate has the characteristics of high compressive strength, bending strength and elasticity modulus, light weight, abrasion resistance, fire resistance, good anti-permeability and anti-freezing properties, acid-alkali corrosion resistance and attractive appearance. Thus, the physical properties of the subway evacuation platform plate disclosed by the invention can completely meet the requirements of the subway evacuation platform plate.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a method for manufacturing a subway evacuation platform board. Background technique [0002] There are three main materials for evacuation platform slabs commonly used in subways: ordinary reinforced concrete materials, metal materials and organic composite materials. The evacuation platform slabs used in the early days were prefabricated by ordinary reinforced concrete factory or made of metal materials. The length, width and thickness of the platform slab are calculated as (1200*800*B)mm, where B is the thickness of the evacuation platform slab, the thickness B of the ordinary reinforced concrete evacuation platform is 5-8cm, and the density is about 105-170kg / m; the cost is about 260 yuan / m; the metal material evacuation platform is mostly cast iron, the thickness B of the platform is 2cm, and the density is about 110kg / m; the cost is 340 yuan / m; the organic compos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B14/06C04B14/48
Inventor 范磊彭明强李锐曹志峰王明铭
Owner BEIJING ZHONGYANYI ENG TECH DEV CENT
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