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Adhesive and reinforcement method for surface of raw earth building

A kind of adhesive and construction technology, which is applied in the direction of construction, building maintenance, building construction, etc., can solve the problems of high cost, achieve long service life, simple construction, and improve the effect of earthquake resistance

Active Publication Date: 2017-11-21
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two types of common binders: (1) cement-like inorganic materials, which have good reinforcement strength after hardening, but cannot be directly used for the reinforcement and protection of earth walls because it is difficult to form an effective connection with the raw earth wall; (2) ) Organic binders such as carbon fiber glue, this type of material can penetrate into the soil wall, and can also be combined with organic tie materials to exert a good reinforcement effect, but due to the high cost, it is difficult to promote in economically backward areas

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take by weighing 100 grams of sodium silicate with a modulus of 3.5 and a Baume degree of 35 degrees, 250 grams of fine sand for construction, and 15 grams of sodium fluorosilicate powder. Mix sodium fluorosilicate powder with fine sand and stir for 1 min until the mixture is uniform. Pour in the sodium water glass and stir until well combined. Stick the two ends of the carbon fiber cloth on the two 160mm×160mm surfaces of the adobe test block, and the sticking area is 120mm×100mm. Paste 4 test blocks in the same way, and place them at room temperature for 3 days, then use a model CSS-44100 electronic universal testing machine produced by Changchun Testing Machine Research Institute to apply tensile force and conduct a shear test on the pasting surface. Test results: The measured average shear strength is 0.31MPa, and the failure conditions are all shear failures of the adobe itself, the carbon fiber cloth is intact, and the bonding surface of the mortar and the adobe ...

Embodiment 2

[0031] Take by weighing 100 grams of sodium silicate with a modulus of 3.5 and a Baume degree of 35 degrees, 250 grams of fine sand for construction, and 15 grams of sodium fluorosilicate powder. Mix sodium fluorosilicate powder with fine sand and stir for 1 min until the mixture is uniform. Pour in the sodium water glass and stir until well combined. Pour the prepared mortar into the mold to make a cylindrical mortar test block with a diameter of 50mm and a height of 30mm. In the same way, 6 test blocks were made, and after being placed at room temperature for 3 days, they were all soaked in water for 15 days. Test results: After soaking in water for 15 days, the test block was intact, and there was no dissolution or cracking that would reduce its strength.

[0032] The comparative example of embodiment 2

[0033] Same as Example 2, except that after being poured into a mould, it is placed outside under the scorching sun and exposed to the sun. After 3 days of exposure to...

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Abstract

The invention discloses a binder for the surface of raw soil construction. The binder comprises components in the following proportions: water glass with a Baumé degree of 35-45 degrees: construction sand: a curing agent of 1 :2.3‑3.0:0.05‑0.22. The adhesive of the invention can firmly stick the reinforcing material on the surface of the raw soil wall, improve the seismic resistance of the raw soil structure, suppress the development of cracks in the wall during earthquakes, and improve the wind erosion resistance of the wall.

Description

technical field [0001] The invention relates to the technical field of structure reinforcement, in particular to an adhesive used for the surface of raw earth buildings and a reinforcement method. Background technique [0002] Raw earth architecture refers to the building that mainly uses unroasted and only simply processed undisturbed soil as the main structure to build the main structure. It is the oldest and still widely used building type, almost all over the world. However, limited by the mechanical strength of materials, raw earth structure houses, whether adobe houses or rammed earth houses, inevitably have the problem of poor earthquake resistance. In addition, most of the raw earth structure houses currently used are distributed in rural areas and underdeveloped areas. The construction and daily maintenance conditions of the raw earth buildings are insufficient, which further weakens the earthquake resistance of the buildings. In earthquakes, they are often severely...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26E04G23/02
Inventor 汪明王亚安金赟赟史培军
Owner BEIJING NORMAL UNIVERSITY
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