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Composite reinforced alkali-activated slag mortar board and preparation method thereof

A composite reinforcement, slag sand technology, applied in the field of building materials, can solve the problems of reducing bearing capacity, fabric debonding and peeling, etc., to achieve the effects of easy production, less environmental pollution, and easy raw materials

Active Publication Date: 2016-08-17
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, continuous fiber fabric reinforced panels also have some disadvantages, mainly focusing on the bonding performance between the fabric and the matrix.
When the bonding ability between the fabric and the substrate becomes poor, the fabric will be debonded and peeled off from the substrate when the board is stressed, greatly reducing the load-bearing capacity

Method used

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  • Composite reinforced alkali-activated slag mortar board and preparation method thereof

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Experimental program
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preparation example Construction

[0037] The preparation method includes the following steps:

[0038] The first step: According to product performance requirements, choose the appropriate continuous carbon fiber fabric layer number, spacing, upper and lower protective layer thickness, chopped fiber type, geometric size, volume fraction and board thickness;

[0039] Step 2: Fix the continuous carbon fiber fabric in a suitable mold according to the parameters selected in the first step and apply a certain tension to each layer of fabric to maintain a flat state;

[0040] The third step: According to the product performance requirements, select the appropriate alkali-activated slag mortar mixing ratio parameters, such as: type of cementing material, alkali content and modulus of alkali activator, water-binder ratio, bone-glue ratio, etc.;

[0041] Part 4: According to the alkali-activated slag mortar mix ratio parameter selected in the third step, the accurately weighed cementitious material and sand are mixed uniformly,...

Embodiment 1

[0044] The composite reinforced alkali activated slag mortar board has the following composition:

[0045] 1. The reinforcing material is continuous carbon fiber fabric and chopped polypropylene fiber. The tensile strength of the continuous carbon fiber fabric is 3200MPa, the modulus of elasticity is 215GPa, the elongation rate is 2.0%, the number of plies is 2 layers, the layer spacing is 10mm, the upper and lower protective layer thickness is 10mm; the length of the chopped polypropylene fiber is 12mm , The diameter is 25μm, the volume fraction is 1.0%;

[0046] 2. The thickness of the board is 20mm;

[0047] 3. The cementitious material in the alkali-activated slag mortar is composed of S95 grade ground and granulated blast furnace slag powder, and the content of the ground and granulated blast furnace slag powder accounts for 100% of the mass of the cementitious material;

[0048] 4. The alkali activator in the alkali-activated slag mortar is water glass and sodium hydroxide, the...

Embodiment 2

[0056] The composite reinforced alkali activated slag mortar board has the following composition:

[0057] 1. The reinforcing material is continuous carbon fiber fabric and chopped polypropylene fiber. The tensile strength of the continuous carbon fiber fabric is 3100MPa, the elastic modulus is 210GPa, the elongation rate is 2.0%, the number of plies is 3, the layer spacing is 5mm, and the thickness of the upper and lower protective layers is 10mm; the length of the chopped polypropylene fiber is 8mm , The diameter is 25μm, the volume fraction is 1.5%;

[0058] 2. The thickness of the board is 35mm;

[0059] 3. The cementitious material in the alkali-activated slag mortar is composed of S95 grade ground and granulated blast furnace slag powder and metakaolin. The content of ground and granulated blast furnace slag powder accounts for 90% of the mass of the cementitious material, and metakaolin accounts for the mass of the cementitious material. 10%;

[0060] 4. The alkali activator ...

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Abstract

The invention relates to a composite reinforced alkali-activated slag mortar board and a preparation method thereof. The board is composed of continuous carbon fiber textile fabric, a chopped fiber composite reinforced material and alkali-activated slag mortar, wherein the continuous carbon fiber textile fabric and chopped fiber are reinforcing materials; and the alkali-activated slag mortar filled between the textile fabric and the fiber is a matrix material. The preparation method for the composite reinforced alkali-activated slag mortar board provided by the invention is simple, adopts a normal-temperature and normal-pressure curing preparation process without the need for heating and pressurization, has low unit energy consumption, does not discharge three wastes, and is a green preparation process. The composite reinforced alkali-activated slag mortar board prepared by using the above-mentioned preparation method has excellent bending property and strong impact resistance and freeze-thaw resistance.

Description

Technical field [0001] The invention belongs to the field of building material technology (building material structure), and relates to an engineering fabric / fiber composite reinforced board, specifically a composite reinforced alkali-activated slag mortar board, which can be used for exterior wall boards or sandwich boards. Background technique [0002] As one of the pillar industries of my country's national economy, the construction industry has developed rapidly in the past ten years, and the huge market demand for construction materials is increasing day by day. Non-load-bearing external wall siding is a new type of building material. Because of its prefabricated shape, light weight and thin wall, it can not only cooperate with cast-in-place concrete frame structure and steel structure construction, but also with precast concrete frame structure construction, which reduces construction The technology also reduces the on-site construction procedures, and when used with exteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/08C04B14/38C04B16/06B28B23/04B28B1/52
CPCB28B1/525B28B23/04C04B28/082C04B14/386C04B16/0633
Inventor 张亚梅李涛戴建国
Owner SOUTHEAST UNIV
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