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High-ductility hollow building block and fabrication method thereof

A hollow block and production method technology, applied in the field of building materials, can solve the problems of ordinary block bearing capacity, deformation capacity not meeting the requirements, brittleness, poor crack resistance and seismic performance, and improved seismic fortification requirements, etc. Mechanical properties, the effect of improving seismic performance, improving bearing capacity and ductility

Active Publication Date: 2013-01-23
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the relatively low strength of existing blocks, high material brittleness and poor deformation capacity, the bearing capacity of masonry structures decreases rapidly under earthquake action, which limits the application of this relatively economical structure
Due to the increased requirements for seismic fortification of block masonry structures in the current code and the increase in functional requirements, the bearing capacity and deformation capacity of ordinary blocks may not meet the requirements.
In summary, the existing hollow blocks have the disadvantages of brittleness, crack resistance and poor seismic performance

Method used

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  • High-ductility hollow building block and fabrication method thereof
  • High-ductility hollow building block and fabrication method thereof
  • High-ductility hollow building block and fabrication method thereof

Examples

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Embodiment 1

[0026] Follow the technical scheme of the present invention, such as figure 1 As shown, the size of the high ductility hollow block in this example is 390mmx190mmx190mm, the outer wall thickness is 45mm, the rib is 40mm, and the hollow rate is 35.09%.

[0027] Its specific production process is:

[0028] Step 1, preparation of high ductility fiber concrete:

[0029] The components of the high ductility fiber concrete 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 content 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 silica fume has an ignition loss of 5%, a silica content of 88%, and a specific surface area of ​​18,000m 2 / kg of silica fume; the maximum particle s...

Embodiment 2

[0040] Such as figure 2 As shown, the difference from Example 1 is that the block size of this example is 390mmx190mmx90mm, the outer wall thickness is 40mm, the rib is 30mm, and the hollow ratio is 41.57%. Other manufacturing methods are the same as Example 1.

Embodiment 3

[0042] Such as image 3As shown, the difference from embodiment 1 is that the block size of this embodiment is 190mmx190mmx190mm, the outer wall thickness is 35mm, and the hollow ratio is 39.89%. Other manufacturing methods are the same as in embodiment 1.

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Abstract

The invention discloses a high-ductility hollow building block and a fabrication method thereof which are used for solving the problems of low bearing capacity and poor ductility and seismic resistance of the existing hollow building block. According to the high-ductility hollow building block disclosed by the invention, high-ductility fiber concrete is taken as a main raw material, and a molded test piece is formed by using a building block molding machine and cured for a certain age under standard curing conditions, thereby obtaining the hollow building block. The high-ductility hollow building block disclosed by the invention has better compressive capacity, shearing resistance and seismic resistance in comparison with the traditional building block, and is difficultly subjected to brittle fracture; and meanwhile, the production process of the building block is simple.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a hollow block made of high ductility fiber concrete and a manufacturing method thereof. Background technique [0002] The hollow block is an important part of the masonry structure, which bears part or all of the load acting on the masonry structure, and its seismic performance and deformation capacity have a great influence on the integrity and seismic performance of the masonry structure. Due to the relatively low strength of existing blocks, high material brittleness and poor deformation capacity, the bearing capacity of masonry structures decreases rapidly under earthquake action, which limits the application of this relatively economical structure. Due to the increased requirements for seismic fortification of block masonry structures in the current code and the increase in functional requirements, the bearing capacity and deformation capacity of ordi...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B16/06
Inventor 邓明科梁兴文代洁景武斌
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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