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A composite reinforced alkali-activated slag mortar board and its preparation method

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

Active Publication Date: 2018-05-04
SOUTHEAST UNIV
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  • Summary
  • 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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  • A composite reinforced alkali-activated slag mortar board and its preparation method

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Experimental program
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Effect test

preparation example Construction

[0037] The preparation method comprises the following steps:

[0038] The first step: according to the product performance requirements, select the appropriate number of layers, spacing, thickness of upper and lower protective layers of continuous carbon fiber fabric, type of chopped fiber, geometric size, volume fraction and thickness of the plate;

[0039] Step 2: According to the parameters selected in the first step, fix the continuous carbon fiber fabric in a suitable mold 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 parameters of the alkali-activated slag mortar mix ratio, such as: the type of cementitious material, the alkali content and modulus of the alkali activator, water-cement ratio, bone-cement ratio, etc.;

[0041] Part 4: According to the alkali-activated slag mortar mix parameters selected in the third step, mix the accurately wei...

Embodiment 1

[0044] Composite reinforced alkali activated slag mortar board, its composition is as follows:

[0045] 1. The reinforcement material is continuous carbon fiber fabric and chopped polypropylene fiber. The tensile strength of the continuous carbon fiber fabric is 3200MPa, the elastic modulus is 215GPa, and the elongation is 2.0%. The number of laying layers is 2 layers, the layer spacing is 10mm, and the thickness of the upper and lower protective layers is 10mm; , with a diameter of 25 μm and a volume fraction of 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 fine-grained blast-furnace slag powder, and the content of the fine-grained 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 alkali content in the alkali activator is 5.0...

Embodiment 2

[0056] Composite reinforced alkali activated slag mortar board, its composition is as follows:

[0057] 1. The reinforcement 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, and the elongation is 2.0%. The number of laying layers is 3 layers, the layer spacing is 5mm, and the thickness of the upper and lower protective layers is 10mm; , with a diameter of 25 μm and a volume fraction of 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 fine-grained blast furnace slag powder and metakaolin. The content of finely ground 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 in the alkali-activated slag mortar is water glas...

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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 a fabric / fiber composite reinforced board for engineering, in particular to a composite reinforced alkali-activated slag mortar board, which can be used for exterior wall panels or sandwich panels. 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 building materials is increasing day by day. Non-load-bearing external wall hanging board 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 cooperate with prefabricated concrete frame structure construction, which not only reduces construction The technology also reduces the on-site constructi...

Claims

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Application Information

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Patent Type & Authority Patents(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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