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Dispersed fiber foam concrete and preparation method thereof

A technology of fiber foam and concrete, applied in the field of building materials, to achieve the effect of high thermal insulation performance

Active Publication Date: 2019-04-05
汕头职业技术学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these two methods have obvious disadvantages, the surfactant modification has actually changed the structural composition of the fibers, and the ultrasonic dispersion of the fibers, after mixing with cement-based materials, will re-agglomerate

Method used

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  • Dispersed fiber foam concrete and preparation method thereof
  • Dispersed fiber foam concrete and preparation method thereof
  • Dispersed fiber foam concrete and preparation method thereof

Examples

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preparation example Construction

[0029] The preparation method of the aforementioned modified fiber foam concrete of the present invention includes the following steps (accompanying drawing 2 is a schematic diagram of the manufacturing process of the product of the present invention):

[0030] (1) Raw materials and pre-production preparations:

[0031] (1) After weighing the water by more than the above-mentioned parts by weight, place it outdoors for 1 to 2 days, and set it aside;

[0032] (2) Wash and sieve the river sand, select the river sand with a particle size of ≤0.3 mm, and place it in a drying box and bake it at 105°C until it reaches a constant weight, and set aside;

[0033] (2) Production of modified fiber foam concrete:

[0034] (1) Calculate the parts by weight of cement, river sand, early-strength powder, foam-stabilizing powder, fly ash, fiber, water, and foaming agent used each time according to the design requirements of the dry density of the product;

[0035] (2) Input the fly ash into ...

Embodiment １

[0041] To produce 1 cubic meter of modified fiber foam concrete test block with a dry density of 500kg / m3, the amount of raw materials required for production: cement (P.O 42.5) 250.02 kg; river sand (particle size ≤ 0.3 mm) 83.34 kg; fly ash (I grade) 83.34 kg; water 208.35 kg; polyvinyl alcohol (PVA) fiber (fiber length 9 mm, diameter 31 microns) 1.50 kg; early strength agent calcium formate, molecular formula C2H2CaO4, dosage 1.25 kg; polymer foam The dosage of the agent is 2.92 kg; the foam stabilizer is polyacrylamide, and the dosage is 0.5 kg.

[0042] The production steps of the products are attached figure 2 conduct.

[0043] The modified fiber foam concrete insulation test block prepared in the embodiment is tested according to the specifications "JC / T 1062-2007" and the specification "GB / T 11969-2008" for dry density, strength, insulation performance and other properties.

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Abstract

The invention relates to modified fiber foam concrete which comprises, by weight, 1000 parts of cement, 333.3 parts of coal ash, 333.3 parts of river sand, 833.3 parts of water, 6 parts of fibers, 5 parts of early strength powder, 11.7 parts of foaming agents and 2 parts of foam stabilizing powder. The invention further relates to a fiber dispersion method and a preparation method of the fiber foam concrete. The prepared modified fiber foam concrete has excellent performances of light weight, high strength, high heat retaining property and the like. The modified fiber foam concrete has the advantages of wide use range, simplicity and convenience in construction, energy and material conservation, use of industrial waste, green and environment-friendly properties and the like.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for dispersing fibers and a method for preparing lightweight, high-strength, high-insulation modified fiber foam concrete. Background technique [0002] With the development of high-rise and super-high-rise buildings, reducing the weight of walls has become the goal pursued by many designers and developers, and it is also a requirement for building energy conservation and environmental protection, making lightweight concrete the focus of development and research. received a lot of attention and research. Foamed concrete is a new type of lightweight high-strength thermal insulation building material containing a large number of closed pores, and it is also a new type of building energy-saving material that is waste-free, environmentally friendly, energy-saving, inexpensive and non-combustible. However, due to the lack of coarse aggregate and porous structure, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/04
CPCC04B28/04C04B2111/40C04B2201/50C04B2201/32C04B2201/20C04B18/08C04B16/0641C04B14/06C04B24/04C04B24/2652C04B38/02C04B38/0067
Inventor 陈艳刘汉清梅杏冰刘子杰
Owner 汕头职业技术学院
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