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A kind of modified preparation method of bamboo aggregate and its application
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A technology of bamboo bone modification, which is applied in the chemical field of building materials, can solve the problems of decreased strength and toughness of bamboo particles, loss of ideal reinforcement effect, unfavorable long-term use of bamboo materials, etc., and achieves good sound-absorbing effect, high impact resistance Adjunctive effect
Active Publication Date: 2022-07-19
绍兴华放新材料有限公司
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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 addition, there will be a large amount of water-soluble nutrients inside the bamboo, and the bamboo cells are in an environment full of free water and aerobic, which is easy for insects to multiply and cause loss of functionality, which is not conducive to the long-term use of bamboo in construction
Method used
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Effect test
Embodiment 1
[0024] (1) Chopping: chop the collected moso bamboo in a chopper, and the size of the bamboo particles after vibration screening is 20×10×5mm (length, width, thickness);
[0025] (2) boiling: the bamboo particles processed in step (1) are weighed 3000g and immersed in boiling water, continue to heat and boil for 1 hour, and the bath ratio is 1:5;
[0026] (3) washing: put the boiled bamboo particles in step (2) into clear water, and wash 3 times;
[0027] (4) drying: the bamboo particles prepared in step (3) are put into an oven at 80° C. and dried to a moisture content of 8% to obtain the bamboo aggregate A.
Embodiment 2
[0029] (1) Chopping: chop the collected moso bamboo in a chopper, and the size of the bamboo particles after vibration screening is 20×10×5mm (length, width, thickness);
[0030] (2) soaking in sodium alginate solution: it is 2g / L sodium alginate solution that the bamboo particles processed by step (1) are immersed in mass concentration, soaked for 40min, and the bath ratio is 1:8;
[0031] (3) immersion in calcium chloride solution: immersing the bamboo particles prepared in step (2) in mass concentration is 12g / L calcium chloride solution, soaking for 100min, and the bath ratio is 1:8;
[0032] (4) drying: the bamboo particles prepared in step (3) are put into an oven at 90° C. and dried to a moisture content of 17% to obtain the bamboo aggregate B.
Embodiment 3
[0034] (1) Chopping: chop the collected bamboo in a chopper, and the bamboo particles are 15×5×5mm (length, width, thickness) after vibrating screening;
[0035] (2) boiling: the bamboo particles processed in step (1) are weighed 3000g and immersed in boiling water, continue to heat and boil for 1.5 hours, and the bath ratio is 1:10;
[0036] (3) washing: put the boiled bamboo particles in step (2) into clear water, and wash 3 times;
[0037] (4) immersion in sodium alginate solution: immersion of the washed bamboo particles in step (3) is 3g / L sodium alginate solution, soaking for 30min, and the bath ratio is 1:5;
[0038] (5) immersion in calcium chloride solution: it is 10g / L calcium chloride solution that the bamboo particles prepared in step (4) are immersed in mass concentration, soaked for 90min, and the bath ratio is 1:5;
[0039] (6) drying: the bamboo particles prepared in step (5) are put into an oven at 100° C. and dried to a moisture content of 11% to obtain bamb...
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Abstract
The invention discloses a modified preparation method and application of bamboo aggregates. Moso bamboo is used as the main raw material, chopped into bamboo particles, and after vibration screening, they are successively boiled with water, washed with water, soaked in sodium alginate solution, and washed with calcium chloride. Processing methods such as solution soaking and drying prepare bamboo particles into a kind of bamboo aggregate that can be used in the field of construction. The compressive strength of the finished concrete prepared by the bamboo aggregate treated by the modification method of the present invention is 10 to 20 times the compressive strength of the finished concrete prepared by the untreated bamboo particles, and has a higher compressive strength than that of the untreated bamboo particles. Better frost resistance and corrosion resistance; compared with ordinary concrete, it also has a high porosity, which can play a good sound absorption and thermal insulation effect, and due to the existence of bamboo aggregate, it is 30 ~ 30 lighter than ordinary concrete 40%, easy to transport and assemble, with 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 building sector continues to increase. Concrete is one of the indispensable materials in modern building materials. Traditional concrete is blended with different proportions of cement, sand, stones and water and a small amount of additives according to the different requirements for concrete hardness and strength. Concrete has strong compressive ability, but its brittleness, self-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 needs of the constru...
Claims
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Application Information
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