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High-ductility mortar

A technology of high ductility and mortar, applied in the field of building materials, can solve problems such as brittleness, poor crack resistance and seismic performance, reduced bearing capacity, and high material brittleness, so as to improve strength and deformation performance, improve mechanical properties, and improve earthquake resistance performance effect

Active Publication Date: 2013-02-06
西安五和新材料科技集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The strength of the existing mortar is relatively low, the material is brittle and the deformation ability is poor, which leads to the rapid decline of the bearing capacity of the masonry structure under the action of the earthquake, which limits the application of this structure
In summary, the existing mortar has the disadvantages of brittleness, crack resistance and poor seismic performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The high ductility mortar of this embodiment is used to build a brick masonry wall with a height of 3.3m, a length of 6.0m, and a thickness of 240mm. The blocks used in this brick masonry wall are solid bricks, and the size of the solid bricks is: 240mm×115mm×53mm . High ductility mortar was used in this brick masonry wall with a thickness of 7 mm.

[0014] Following the technical solution of the present invention, the components of the high ductility mortar of this embodiment are cement, fly ash, silica fume, sand, PVA fiber and water, wherein, by mass percentage, cement: fly ash: silica fume: Sand: water = 1: 0.9: 0.1: 0.76: 0.58; based on the total volume of cement, fly ash, silica fume, sand and water mixed uniformly, the volume of PVA fiber (polyvinyl alcohol fiber) is 1.5 %; The cement used is P.O.52.5R Portland cement, the fly ash is Class I fly ash, the loss on ignition of silica fume is 5%, the silica content is 88%, and the specific surface area is 18000m 2 ...

Embodiment 2

[0023] The brick masonry wall in this example is 3.6m high, 6.6m long, and 240mm thick. The difference from Example 1 is that the blocks used in the brick masonry wall in this example are hollow bricks, and the size of the hollow bricks is: 240mm×115mm ×90mm, the others are the same as in Embodiment 1.

Embodiment 3

[0025] The section size of the brick column in this example is 370mm×370mm, the column height is 3.6m, the block is made of solid brick, the size is 240mm×115mm×53mm, other is the same as the first embodiment.

[0026] The high-ductility mortar brick masonry of the invention can be used for brick masonry walls of teaching buildings in primary and secondary schools, load-bearing masonry walls of single-story factory buildings, structural columns of teaching buildings in primary and secondary schools, and the like.

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Abstract

The invention discloses a high-ductility mortar. The invention solves the problems of fragility, poor crack resistance and poor earthquake resistance existing in the traditional mortar. The high-ductility mortar comprises the components of cement, fly ash, silica fume, sand, PVA (Polyvinyl Acetate) fiber and water, wherein according to the mass percentages, cement: fly ash: silica fume: sand: water =1:0.9:0.1:0.76:0.58; and when the total volume of uniformly mixed cement, fly ash, silica fume, sand and water is used as a base number, the volume mixing amount of PVA fiber is 1.5%. The high-ductility mortar has plastic deformability similar to steel, has good adhesive property to brick masonry and is an ecological building material with high strength, high ductility, high durability and high damage resistance, and the strength and the deformability of the mortar can be effectively increased.

Description

technical field [0001] The invention relates to a building material, in particular to a high ductility mortar. Background technique [0002] Mortar plays the role of bonding and force transmission in the masonry structure, and plays a vital role in ensuring the integrity of the masonry structure. Since the strength of mortar is far lower than that of blocks, the insufficient bearing capacity of mortar joints has become one of the main reasons for the damage of masonry structures under earthquake action. The strength of the existing mortar is relatively low, the material is brittle and the deformation ability is poor, which leads to the rapid decline of the bearing capacity of the masonry structure under the action of an earthquake, which limits the application of this structure. In summary, the existing mortar has the disadvantages of brittleness, poor crack resistance and shock resistance. Contents of the invention [0003] One of the objectives of the present invention...

Claims

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Application Information

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IPC IPC(8): C04B28/04
Inventor 梁兴文邓明科代洁景武斌
Owner 西安五和新材料科技集团股份有限公司
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