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Polyvinyl alcohol fiber magnesium cement reinforcing mortar

A technology of polyvinyl alcohol fiber and magnesium cement, which is applied in the field of strengthening mortar with polyvinyl alcohol fiber and magnesium cement, can solve the problems of low early strength, long curing time, slow demoulding, etc., achieve stable performance, reduce the risk of accidents, The effect of enhancing ductility

Inactive Publication Date: 2015-03-25
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The mortar reinforcement method is similar to the reinforced concrete section reinforcement method, but the mortar used for structural reinforcement currently on the market generally has disadvantages such as low early strength, slow formwork removal, and long curing time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A polyvinyl alcohol fiber magnesium cement reinforcement mortar is composed of polyvinyl alcohol fiber and magnesium cement mortar; the polyvinyl alcohol fiber (purchased from Baohualin Industrial Development Co., Ltd., Yongan City, Fujian Province) has a specification of Φ0.038mm×12mm , the fiber content is 2% of the volume of the dry material (the mass fraction of the dry material is 0.13%); the composition of the magnesium cement mortar is: by weight percentage: magnesium cement 44.4%, medium sand 44.4%, water 11.2%, mixed uniform.

[0027] The method of use is as follows: firstly mix the components of magnesium cement and medium sand in proportion, then add the required amount of water to the evenly stirred mixture, stir to form a slurry, and then add the required polymer to the slurry. Vinyl alcohol fibers (the tangled fibers should be dispersed before adding, and added evenly), stir evenly and use.

[0028] Taking a model column with a cross-section of 200 mm×200...

Embodiment 2

[0030] A polyvinyl alcohol fiber magnesium cement reinforcement mortar is composed of polyvinyl alcohol fiber and magnesium cement mortar; the polyvinyl alcohol fiber (purchased from Baohualin Industrial Development Co., Ltd., Yongan City, Fujian Province) has a specification of Φ0.038mm×12mm , the fiber content is 1% of the volume of the dry material (the mass fraction of the dry material is 0.07%); the composition of the magnesium cement mortar is: in terms of weight percentage: 48.8% of magnesium cement, 39% of medium sand, 12.2% of water, mixed uniform.

Embodiment 3

[0032] A polyvinyl alcohol fiber magnesium cement reinforcement mortar is composed of polyvinyl alcohol fiber and magnesium cement mortar; the polyvinyl alcohol fiber (purchased from Baohualin Industrial Development Co., Ltd., Yongan City, Fujian Province) has a specification of Φ0.038mm×12mm , the fiber content is 1.5% of the volume of the dry material (the mass fraction of the dry material is 0.1%); the composition of the magnesium cement mortar is: in terms of weight percentage: magnesium cement 54.1%, medium sand 32.4%, water 13.5%, mixed uniform.

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Abstract

The invention discloses polyvinyl alcohol fiber magnesium cement reinforcing mortar which is prepared from polyvinyl alcohol fibers and magnesium cement mortar. The polyvinyl alcohol fiber magnesium cement reinforcing mortar disclosed by the invention has the characteristics of being excellent in adhesive property and waterproof performance, high in coagulation speed and the like; the mortar can be used for better cooperating with old concrete, has good ductility and is excellent in reinforcing effect; and the fiber reinforcing mortar is low in construction cost, easy to prepare raw materials and simple to construct, and the mortar can be directly smeared on the peripheries of structural members; the reinforcing mortar is good in economic, social and environmental protection benefits, and is suitable for popularization and application in a large scale.

Description

technical field [0001] The invention belongs to the field of reinforced mortar for engineering buildings, in particular to a reinforced mortar made of polyvinyl alcohol fiber magnesium cement. Background technique [0002] Concrete and reinforced concrete structures are the most commonly used structure types in contemporary construction projects, and are famous for their high bearing capacity, durability, fire resistance, and wear resistance. However, with the popularization of concrete structures and the diversification of use environments, the erosion hazards of the environment are also increasing. The durability and service life of concrete structures have become a topic of great concern in the field of civil engineering. Common concrete diseases mainly include: concrete carbonation, freeze-thaw and corrosion damage caused by environmental problems; natural and thought-induced deformation and damage of concrete structures; insufficient structural bearing capacity caused b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/10C04B16/06
Inventor 林旭健林华艺季韬梁咏宁
Owner FUZHOU UNIV
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