Modification preparation method of bamboo aggregate and application thereof

A bamboo skeleton and modification technology, applied in the field of building material chemistry, can solve the problems of bamboo particle strength and toughness decrease, loss of ideal reinforcement effect, unfavorable long-term use of bamboo materials, etc., and achieves good sound absorption effect, high impact strength, good adhesion Additive effect

Active Publication Date: 2021-10-29
绍兴华放新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These lyes will dissolve the hemicellulose and lignin in the bamboo particles, thereby weakening the connection between the fiber bundles, resulting in a decrease in the strength and toughness of the bamboo particles themselves, and gradually losing their ideal reinforcement in concrete.
In addi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Chopping: the moso bamboo collected is chopped in a shredder, and the size of the bamboo particles is 20×10×5mm (length, width, thickness) after vibrating and screening;

[0025] (2) Boil in water: take by weighing 3000g of the bamboo granules processed in step (1) and immerse in boiling water, continue to heat and cook for 1 hour, and the bath ratio is 1:5;

[0026] (3) Washing: put the boiled bamboo granules in step (2) into clear water, and wash them 3 times;

[0027] (4) Drying: put the bamboo particles prepared in step (3) into an oven at 80° C. and dry until the moisture content is 8% to obtain the bamboo aggregate A.

Embodiment 2

[0029] (1) Chopping: the moso bamboo collected is chopped in a shredder, and the size of the bamboo particles is 20×10×5mm (length, width, thickness) after vibrating and screening;

[0030] (2) soaking in sodium alginate solution: immerse the bamboo granules processed in step (1) into a mass concentration of 2g / L sodium alginate solution, soak for 40min, and the bath ratio is 1:8;

[0031] (3) soaking in calcium chloride solution: the bamboo granules prepared by step (2) are immersed in a mass concentration of 12g / L calcium chloride solution, soaked for 100min, and the bath ratio is 1:8;

[0032] (4) Drying: put the bamboo particles prepared in step (3) into an oven at 90°C and dry until the moisture content is 17% to obtain the bamboo aggregate B.

Embodiment 3

[0034] (1) Chopping: the moso bamboo collected is chopped in a shredder, and the size of the bamboo particles is 15 * 5 * 5mm (length, width, thickness) after vibration screening;

[0035] (2) Boil in water: take 3000g of the bamboo granules processed in step (1) and immerse in boiling water, continue to heat and cook for 1.5 hours, and the bath ratio is 1:10;

[0036] (3) Washing: put the boiled bamboo granules in step (2) into clear water, and wash them 3 times;

[0037] (4) soaking in sodium alginate solution: immerse the bamboo particles washed in step (3) in a sodium alginate solution with a mass concentration of 3g / L, soak for 30min, and the bath ratio is 1:5;

[0038] (5) soaking in calcium chloride solution: the bamboo granules prepared by step (4) are immersed in a mass concentration of 10g / L calcium chloride solution, soaked for 90min, and the bath ratio is 1:5;

[0039] (6) Drying: Put the bamboo particles prepared in step (5) into an oven at 100° C. and dry until ...

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PUM

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Abstract

The invention discloses a modification preparation method of bamboo aggregate and an application thereof, moso bamboos are used as main raw materials, the moso bamboos are cut into bamboo particles, after vibration screening, the bamboo particles are prepared into the bamboo aggregate which can be applied to the field of buildings through treatment methods such as water boiling, water washing, soaking in a sodium alginate solution, soaking in a calcium chloride solution, drying and the like. The compressive strength of a concrete finished product prepared from the bamboo aggregate treated by the modification method is 10-20 times that of a bamboo particle concrete finished product prepared from untreated bamboo particles, and the concrete finished product has better anti-freezing and corrosion-resistant performance than the untreated bamboo particles; compared with common concrete, the bamboo aggregate has high porosity, can achieve good sound absorption and heat preservation effects, is 30-40% lighter than the common concrete due to the existence of the bamboo aggregate, is convenient to transport and assemble, and has high practical value.

Description

technical field [0001] The invention relates to the technical field of building material chemistry, in particular to a modified preparation method of bamboo aggregate and its application. Background technique [0002] With the continuous development of social economy, my country's energy demand continues to increase, and the energy consumption in the construction field continues to increase. Concrete is one of the essential materials in modern building materials. Traditional concrete is made by mixing different proportions of cement, sand, stones, water and a small amount of additives according to different requirements for concrete hardness and strength. Concrete is characterized by strong compression resistance, but its brittleness, self-heavy weight, weak tensile and flexural resistance, and poor sound absorption, heat insulation, and thermal insulation properties cannot meet the requirements of existing functional occasions for concrete. [0003] In order to meet the ne...

Claims

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Application Information

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IPC IPC(8): C04B20/04C04B20/02C04B18/26
CPCC04B20/04C04B20/023C04B20/02C04B18/265Y02W30/91
Inventor 孙学光朱旭东李治均孙君海徐金
Owner 绍兴华放新材料有限公司
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