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Construction method for high-ductility masonry wall with reinforced mortar-joint mortar layer

A construction method and mortar layer technology are applied in the construction field of high ductility masonry walls, which can solve the problems of high compressive strength, poor seismic performance, low tensile and shear strength, etc., and achieve increased shear performance and improved seismic resistance. performance, the effect of increasing shear resistance

Inactive Publication Date: 2018-07-20
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The basic mechanical characteristics of masonry are high compressive strength, but extremely low tensile and shear strength, which leads to poor seismic performance of the masonry structure as a whole

Method used

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  • Construction method for high-ductility masonry wall with reinforced mortar-joint mortar layer
  • Construction method for high-ductility masonry wall with reinforced mortar-joint mortar layer

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Embodiment 1

[0020] Embodiment 1: technical scheme of the present invention comprises the following steps:

[0021] 1) Moisten the blocks used for masonry walls in advance to avoid shrinkage cracks in the mortar layer of mortar joints caused by the blocks absorbing water;

[0022] In step 1), the blocks include: sintered ordinary bricks, sintered hollow bricks, sintered porous bricks, autoclaved lime-sand bricks, autoclaved fly ash bricks or concrete hollow bricks.

[0023] 2) In the process of building a masonry wall, according to the cross-sectional size of the wall, smear 3-5mm thick high-performance mortar on the first skin block along the cross-section of the wall;

[0024] In step 2), the production process of high-performance mortar joints: select 52.5 Portland cement, first mix 52.5 Portland cement, Class I fly ash, silica fume and silica sand with a mixer for 2 to 3 minutes according to the mass ratio, After stirring evenly, add water and stir, then add Sika third-generation wate...

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Abstract

The invention discloses a construction method for a high-ductility masonry wall with a reinforced mortar joint mortar layer, and belongs to a construction method of a high-ductility masonry wall. Theconstruction method comprises the steps that (1) building blocks used for building a wall body are wetted in advance; (2) high-performance mortar-joint mortar with the thickness being 3-5 mm is smeared on first-layer building blocks along the cross section of the wall body according to the size of a cross section of the wall body; (3) a piece of geogrid mesh or a steel wire mesh is laid on the high-performance mortar joint mortar, high-performance mortar-joint mortar with the thickness being 3-5 mm is smeared on the geogrid mesh or the steel wire mesh, and second-layer building blocks are built on the high-performance mortar-joint mortar layer; and (4) the step (2) and the step (3) are repeated, wall body building is completed according to the designed height of the masonry wall. The construction method for the high-ductility masonry wall with the reinforced mortar joint mortar layer has the advantages that (1) the stress property of the whole masonry wall is improved; (2) transfer andexpansion of a crack in the mortar-joint mortar layer are effectively controlled, and ductility and integrity of the masonry wall are improved; and (3) the transfer path of cutting off the crack is effectively obstructed, the anti-shear property of the masonry wall is improved, and the aseismic performance of the newly-built masonry wall is improved accordingly.

Description

technical field [0001] The invention relates to a construction method of a high-ductility masonry wall, in particular to a construction method of a high-ductility masonry wall reinforced by a mortar layer of mortar joints. Background technique [0002] Masonry is made of blocks and mortar and is a typical brittle material. At the same time, due to the existence of horizontal and vertical mortar joints, masonry is also an anisotropic material, and its heterogeneity is higher than that of concrete. Discreteness and randomness are typical characteristics of masonry materials. Discreteness means that the masonry is divided into many independent units by the mortar layer, and the mortar layer is the weak part of the whole masonry; randomness means that the mechanical properties of the masonry are affected by the construction quality, especially the mortar layer. Fullness has a greater impact. The basic mechanical characteristics of masonry are high compressive strength, but ext...

Claims

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Application Information

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IPC IPC(8): E04G21/00E04B1/98E04H9/02C04B28/04
CPCC04B28/04C04B2111/00672E04G21/00E04H9/02C04B18/08C04B18/146C04B14/06C04B22/002C04B2103/302C04B20/0048C04B2111/00646E04B2/02E04B2002/0282Y02W30/91C04B16/0641C04B40/0028C04B14/386C04B14/42C04B14/4668C04B16/0625C04B16/0633
Inventor 尹世平荆磊王菲李世昌
Owner CHINA UNIV OF MINING & TECH
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