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Steel-bamboo mixed fiber regenerated thermal insulation concrete and preparation method thereof

A technology of thermal insulation concrete and mixed fibers, which is applied in the field of building materials, can solve the problems of large porosity, reduce concrete density, and low strength, and achieve the effects of improving crack resistance, improving fluidity, and improving toughness

Active Publication Date: 2019-05-31
湖南湘科智测工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The steel-bamboo mixed fiber recycled thermal insulation concrete of the present invention aims at the disadvantages of large porosity and low strength of recycled thermal insulation concrete. Crack resistance, reduce the cracks caused by plastic deformation in the early stage of the component, and suppress micro-cracks; the second is to use steel fibers to increase the tensile strength of concrete, and at the same time improve the deformation capacity of concrete to improve its toughness and impact resistance, making it tensile , bending resistance, impact resistance and fatigue resistance are superior to ordinary concrete; third, by mixing polypropylene composite bamboo fibers with low density and short length, the amount of steel fibers can be reduced while ensuring the strength, reducing the density of concrete and overcoming the The problems of poor fluidity and low compactness caused by adding steel fibers to thermal insulation concrete expand the application prospects of thermal insulation concrete

Method used

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  • Steel-bamboo mixed fiber regenerated thermal insulation concrete and preparation method thereof
  • Steel-bamboo mixed fiber regenerated thermal insulation concrete and preparation method thereof
  • Steel-bamboo mixed fiber regenerated thermal insulation concrete and preparation method thereof

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Embodiment 1

[0054] The steel-bamboo mixed fiber recycled thermal insulation concrete of this embodiment is made of the following raw materials according to the percentage of the total weight of raw materials: 16% of cement, 12% of water, 35.03% of acidified recycled fine aggregate, and 35% of acidified recycled coarse aggregate. %, polypropylene composite bamboo fiber 0.6%, steel fiber 0.5%, hydroxypropyl methyl cellulose ether 0.14%, polystyrene particles 0.6% and resin rubber powder 0.1%. Wherein, the strength grade of the cement is 42.5; the acidified regenerated coarse aggregate is obtained by taking waste concrete with a strength of 30MPa-50MPa, removing slag and steel bars, crushing, sieving, and soaking in acetic acid. diameter of 5mm-20mm fragments; the acidified regenerated fine aggregate is to take the waste concrete with a strength of 30MPa-50MPa, remove slag and steel bars, crush, sieve, and soak in acetic acid to obtain a particle size of Fragments of 0.1mm-5mm; the length of...

Embodiment 2

[0062] The steel-bamboo mixed fiber regenerated thermal insulation concrete of this embodiment is made of the following raw materials according to the percentage of the total weight of raw materials: 22% of cement, 15% of water, 29.75% of acidified regenerated fine aggregate, 29.75% of acidified regenerated coarse aggregate %, polypropylene composite bamboo fiber 1%, steel fiber 1%, hydroxypropyl methyl cellulose ether 0.2%, polystyrene particles 1% and resin powder 0.3%. Wherein, the strength grade of the cement is 42.5; the acidified regenerated coarse aggregate is obtained by taking waste concrete with a strength of 30MPa-50MPa, removing slag and steel bars, crushing, sieving, and soaking in acetic acid. diameter of 5mm-20mm fragments; the acidified regenerated fine aggregate is to take the waste concrete with a strength of 30MPa-50MPa, remove slag and steel bars, crush, sieve, and soak in acetic acid to obtain a particle size of Fragments of 0.1mm-5mm; the length of the st...

Embodiment 3

[0070] The steel-bamboo mixed fiber recycled thermal insulation concrete of this embodiment is made of the following raw materials according to the percentage of the total weight of raw materials: 15% cement, 10% water, 36.65% acidified recycled fine aggregate, 36.65% acidified recycled coarse aggregate %, polypropylene composite bamboo fiber 0.5%, steel fiber 0.5%, hydroxypropyl methylcellulose ether 0.1%, polystyrene particles 0.5% and resin rubber powder 0.1%. Wherein, the strength grade of the cement is 42.5; the acidified regenerated coarse aggregate is obtained by taking waste concrete with a strength of 30MPa-50MPa, removing slag and steel bars, crushing, sieving, and soaking in acetic acid. diameter of 5mm-20mm fragments; the acidified regenerated fine aggregate is to take the waste concrete with a strength of 30MPa-50MPa, remove slag and steel bars, crush, sieve, and soak in acetic acid to obtain a particle size of Fragments of 0.1mm-5mm; the length of the steel fiber...

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Abstract

The invention discloses steel-bamboo mixed fiber regenerated thermal insulation concrete and a preparation method thereof, belonging to the technical field of building materials.The steel-bamboo mixedfiber regenerated thermal insulation concrete is prepared from the following raw materials in percentage by weight:15-22% of cement,10-15% of water, 29.75-36.65% of acidified regenerated fine aggregate, 29.75-36.65% of acidified regenerated coarse aggregate, 0.5 -1% of polypropylene composite bamboo fiber, 0.5-1% of steel fiber, 0.1-0.2% of hydroxypropyl methyl cellulose ether, 0.5-1% of polystyrene particles and 0.1-0.3% of resin rubber powder.The invention also discloses a preparation method of the steel-bamboo mixed fiber regenerated thermal insulation concrete.The steel-bamboo mixed fiberregenerated thermal insulation concrete has the advantages of tensile resistance, bending resistance, impact resistance, fatigue resistance and the like.

Description

technical field [0001] The invention relates to a steel-bamboo mixed fiber regenerated thermal insulation concrete and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] my country is a big energy consumer, and building energy consumption accounts for about one-third of the country's total energy consumption. Improving the thermal insulation performance of building envelopes and the efficiency of heating and cooling systems is an effective way to reduce building energy consumption. In the building envelope, the energy consumption of the wall accounts for the largest proportion, accounting for 32.1%-36.2% of the total energy consumption. Therefore, how to improve the thermal insulation performance of the wall becomes the top priority. [0003] At present, wall insulation is mainly realized in three ways: internal insulation of external walls, external insulation of external walls and self-insulation of walls. ...

Claims

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Application Information

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IPC IPC(8): C04B28/04
Inventor 孙明胡扬阳许珂周坤雷豪贺治宇谭美钰
Owner 湖南湘科智测工程技术有限公司
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