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Fiber foamed concrete and preparation method thereof

A fiber foam and concrete technology, applied in the field of foam concrete, can solve the problems of low compressive strength and poor durability of thermal insulation boards, and achieve the effects of good water absorption, improved integrity and improved performance

Inactive Publication Date: 2017-06-20
SHIJIAZHUANG TIEDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The more prominent problem is the stability of the permafrost subgrade. In order to ensure the stability of the road subgrade, protecting the permafrost chamber is the most commonly adopted design principle. Currently, polystyrene (EPS) insulation boards and polyurethane ( PU) insulation board, but the durability of the above two insulation boards is relatively poor, and the compressive strength is low

Method used

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with specific embodiments.

[0025] The present invention starts from the durability of the railway subgrade thermal insulation material, combines the foam concrete which is widely used in the thermal insulation of building exterior walls, and comprehensively considers the durability and compressive strength, etc., and aims to design the fiber foam concrete with the most optimized performance. Applying foam concrete, which is widely used in building insulation, to railway insulation is very meaningful for railway construction and improvement of railway performance. While enhancing the compressive strength and flexural strength of foamed concrete, the fiber increases the porosity of the foamed concrete, that is, reduces the thermal conductivity, which greatly improves its thermal insulation performance compared with the foamed concrete. After single factor experiments and freeze-thaw cycle tests, the fi...

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Abstract

The invention discloses a fiber foamed concrete and a preparation method thereof. The fiber foamed concrete comprises the following raw materials in parts by weight: 5290 parts of cement, 4965 parts of water, 1.361 part of foaming solution, 1.2964 part of fly ash and 10 parts of fiber. The preparation method comprises the following steps: proportionally weighing the components; sequentially adding the cement and fly ash into a stirrer, proportionally weighing the water, uniformly stirring the mixture by the stirrer, and adding the fiber; preparing and adding the foaming solution; gradually adding the foam into the mixture, and continuously stirring until all the components are uniformly mixed; pouring the mixture into a mold on which lubricating oil is brushed, and curing in a curing chamber; after 24 hours, removing the mold; and respectively curing for 3 days, 7 days and 28 days for experimental detection. The fiber foamed concrete has the advantages of favorable thermal insulation property, favorable compression resistance and favorable bending resistance, and is applicable to a railway bed strengthening layer.

Description

technical field [0001] The present invention relates to a kind of foam concrete, more specifically to a kind of fiber foam concrete, also relates to the preparation method of the fiber foam concrete. The foamed concrete can be widely used in the thermal insulation strengthening layer of railway subgrades in seasonally frozen regions and the engineering thermal insulation layer in cold regions. Background technique [0002] Foamed concrete has the advantages of light weight, heat preservation, fire resistance, shock absorption, environmental protection and sound insulation, etc. It requires less investment, is convenient for production and construction, and can use a large amount of industrial waste. It has been highly valued at home and abroad, and has been widely used and deepened. Research. [0003] With the development of the railway industry, more and more people's attention has been paid to the engineering problems of the railway. When building railways, more attentio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/10C04B28/04
CPCC04B28/04C04B38/10C04B2111/40C04B2111/52C04B2201/32C04B2201/50C04B22/002C04B18/08C04B14/42C04B16/0633C04B14/40
Inventor 岳祖润狄启光王天亮张光磊王彩辉黄东杰杨志浩李佰林王通宁广为张晗冰贾宁吴泽刘晓贺
Owner SHIJIAZHUANG TIEDAO UNIV
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