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High-speed railway active powder concrete prefabricated component and preparation method thereof

A technology of active powder and high-speed railway, applied in the field of concrete construction, can solve the problem of heavy weight of concrete prefabricated components, and achieve the effect of high long-term strength, high toughness and wide range of sources.

Inactive Publication Date: 2018-07-06
RUZHOU ZHENGTIE SANJIA CEMENT PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a high-speed railway active powder concrete prefabricated component and its preparation method to solve the problem of heavy weight of existing concrete prefabricated components

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: A high-speed railway active powder concrete prefabricated component, made of the following raw materials in parts by mass: 650 parts of cement, 190 parts of silicon fume, 130 parts of fly ash, 1250 parts of quartz sand, 120 parts of water, water-reducing 50 parts of agent, 90 parts of steel fiber.

[0035] The preparation includes the following steps: 1) taking various raw materials in proportion, wherein the quartz sand is composed of coarse-grained quartz sand, medium-grained quartz sand and fine-grained quartz sand with a mass ratio of 3:6:1;

[0036] 2) Mix quartz sand, steel fiber, cement, silica fume, and fly ash in sequence for at least 5 minutes of pre-mixing, then add water and water reducing agent and continue stirring for at least 4 minutes;

[0037] 3) Vibrate and form for 5 minutes;

[0038] 4) Initial maintenance: After the components are formed, rest for 6 hours in an environment of 15°C; after the rest, perform initial maintenance. The ini...

Embodiment 2

[0040] Example 2: A high-speed railway active powder concrete prefabricated component, made of the following raw materials in parts by mass: 700 parts of cement, 175 parts of silicon fume, 160 parts of fly ash, 1130 parts of quartz sand, 130 parts of water, water-reducing 44 parts of agent, 110 parts of steel fiber.

[0041] The preparation includes the following steps: 1) taking various raw materials in proportion, wherein the quartz sand is composed of coarse-grained quartz sand, medium-grained quartz sand and fine-grained quartz sand in a mass ratio of 2:7:1;

[0042] 2) Mix quartz sand, steel fiber, cement, silica fume, and fly ash in sequence for at least 5 minutes of pre-mixing, then add water and water reducing agent and continue stirring for at least 4 minutes;

[0043] 3) Vibrate and form for 4 minutes;

[0044]4) Initial maintenance: After the components are formed, rest for 7 hours in an environment of no less than 13°C; after the rest, perform initial maintenance....

Embodiment 3

[0046] Embodiment 3: A kind of high-speed railway active powder concrete prefabricated component, comprises the raw material of following mass fraction: 750 parts of cement, 160 parts of silica fume, 200 parts of fly ash, 1000 parts of quartz sand, 140 parts of water, water reducing 38 parts, 130 parts of steel fiber.

[0047] The preparation includes the following steps: 1) taking each raw material in proportion, wherein the quartz sand is composed of coarse-grained quartz sand, medium-grained quartz sand and fine-grained quartz sand with a mass ratio of 4:5:1;

[0048] 2) Mix quartz sand, steel fiber, cement, silica fume, and fly ash in sequence for at least 5 minutes of pre-mixing, then add water and water reducing agent and continue stirring for at least 4 minutes;

[0049] 3) Vibrate and form for 5 minutes;

[0050] 4) Initial maintenance: After the components are formed, rest for 6.5 hours in an environment not less than 12°C; after the rest for initial maintenance, the...

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Abstract

The invention belongs to the technical field of concrete construction, and particularly relates to a high-speed railway active powder concrete prefabricated component and a preparation method thereof.The high-speed railway active powder concrete prefabricated component is prepared from the following raw materials: cement, silicon powder, coal ash, quartz sand, water, a water reduction agent and steel fibers. By utilizing the high strength, high durability, high toughness and high stability of RPC for producing relevant concrete component products in the field of high-speed railway, the service life of the component can be effectively prolonged, the maintenance expense can be greatly reduced, and the comprehensive expense of the engineering construction and application can be reduced.

Description

technical field [0001] The invention belongs to the technical field of concrete construction, and in particular relates to a high-speed railway active powder concrete prefabricated component and a preparation method thereof. Background technique [0002] Reactive Powder Concrete (RPC for short) is a cement-based material with ultra-high strength, high durability, high toughness and good volume stability developed by using conventional cement and other materials. It is a DSP material and fiber reinforced material. Composite high performance concrete. The salient features of RPC are high strength, high toughness, energy saving and environmental protection, economical application, high temperature resistance, and corrosion resistance. It can be widely used in military facilities, bridge engineering, and civil construction. It is the future development trend of the construction industry at home and abroad. [0003] Specifically, RPC materials have ultra-high mechanical properti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B40/02
CPCC04B28/04C04B40/024C04B2201/50C04B2201/52C04B18/146C04B18/08C04B14/06C04B2103/302C04B14/48
Inventor 周光辉李振杰邹红超杨向东
Owner RUZHOU ZHENGTIE SANJIA CEMENT PROD
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