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A kind of high damping concrete and preparation method thereof

A concrete and high damping technology, which is applied in the field of building materials, can solve the problems of concrete compressive strength and damping ratio, and achieve the effects of low price, promoting hydration process, and improving crack resistance

Active Publication Date: 2022-06-10
YANGTZE UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In existing research, while improving the damping performance of concrete, it is often at the expense of concrete compressive strength, resulting in the incompatibility between the compressive strength and damping ratio of concrete.

Method used

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  • A kind of high damping concrete and preparation method thereof
  • A kind of high damping concrete and preparation method thereof

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Experimental program
Comparison scheme
Effect test

preparation example Construction

Embodiment

Evenly dispersed in the middle, no obvious clustering phenomenon;

3) add weighed rubber powder, microsilica powder successively, stir 2~3min;

4) add weighed natural river sand, gravel successively, stir 2~3min;

5) add weighed water and water reducing agent successively, continue to stir 3min, obtain concrete mixture;

6) load the obtained concrete mixture into the mould that has been painted with release agent, place the mould on a vibrating table

After the vibration is completed, scrape off the excess concrete on the surface of the mold and smooth the surface;

[0046] 7) Finally, put all the test pieces into the standard curing room for curing for 28d, and then the high damping fiber reinforced concrete can be obtained.

The present invention has designed the proportioning of five groups of embodiments altogether, and concrete proportioning is shown in Table 1.

The present invention has also designed five groups of comparative examples, and comparative examples adopts ...

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Abstract

The invention relates to a high-damping concrete. The components and their parts by weight include: 140-150 parts of cement, 260-280 parts of natural river sand, 5-8 parts of rubber powder, and 12-15 parts of silica fume , 400-420 parts of gravel, 0.58-2.16 parts of polypropylene fiber, 0.8-1 part of water reducer, 80-90 parts of water, the particle size of the gravel is below 40 mm; the high damping concrete is fully composed of the above components It is cured after mixing. The invention also provides the technical proposal of the preparation method of the above-mentioned high damping concrete. In the present invention, by adding polypropylene fiber with toughening effect and "internal maintenance effect", rubber powder with viscoelasticity, microsilica powder with physical filling effect, etc., the performance of concrete is improved synergistically between each component, so that it has High damping ratio.

Description

A kind of high damping concrete and preparation method thereof technical field The invention belongs to building material technical field, be specifically related to a kind of high damping concrete and preparation method thereof. Background technique [0002] With the continuous acceleration of my country's modernization process, high-rise and super-high-rise buildings are rising. Effects in earthquakes and extremes The vibration caused by the high-rise building will cause damage to the high-rise building and even lead to failure. In order to resist vibration, it ignores the damping performance of concrete itself. Comparatively speaking, the development of high damping concrete can avoid both The inconvenience caused by damper installation and post-maintenance, and it is more economical. Polypropylene fiber suppresses plastic shrinkage cracking of concrete, improves concrete impact toughness, improves concrete impermeability Compared with other materials, polypropy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/02C04B111/20C04B111/34
CPCC04B28/02C04B2111/00293C04B2111/20C04B2111/343C04B2201/50C04B14/06C04B14/02C04B16/0633C04B18/22C04B18/146C04B2103/302
Inventor 曾磊莫金旭马林玲郭帆刘焱华项胜程国源陈步青刘昌俊唐依伟
Owner YANGTZE UNIVERSITY
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