Ecological slope protection precast blocks and preparation method and application thereof
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A technology of ecological slope protection and prefabricated blocks, applied in the direction of botanical equipment and methods, applications, chemical instruments and methods, etc., can solve the problems of large resource consumption, large amount of cement, sand and gravel, etc., to promote absorption and slope stability Improved effect
Active Publication Date: 2020-07-14
HOHAI UNIV
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[0003] Traditional concrete slope protection has the problem of a large amount of c
Method used
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Embodiment 1
[0038] ① Preparation of curing agent for ecological slope protection prefabricated blocks
[0039] Mix 4 parts by mass of quicklime, 5 parts by mass of fly ash, 0.5 parts by mass of magnesium oxide and 2 parts by mass of calcium sulfate powder to obtain the curing agent required for the product.
[0040] ② Preparation of microbial envelopes
[0041] 15 parts by mass Trichoderma reesei Trichoderma reesei T131 bacterial agent and 8 parts by mass of Bacillus subtilis Bacillus subtilis Mix D9 microbial agent with 1 mass part of urea-formaldehyde resin liquid, add 0.2 mass part of coagulant ammonium chloride, stir evenly, and spray granulate to obtain microbial coating body.
[0042] ③ Preparation of ecological prefabricated blocks
[0043] a. Drying, extruding and cutting the plant straw into granules to make aggregates with particle sizes of 5~10mm, 10~15mm and 15~20mm;
[0044]b. Spray water on the surface of straw aggregate 2~3 times, mix 2 parts by mass of straw aggrega...
Embodiment 2
[0052] ① Preparation of curing agent for ecological slope protection prefabricated blocks
[0053] Mix 5 parts by mass of quicklime, 5 parts by mass of fly ash, 0.8 parts by mass of magnesium oxide and 2 parts by mass of calcium sulfate powder to obtain the curing agent required for the product.
[0054] ② Preparation of microbial envelopes
[0055] With 25 mass parts Trichoderma reesei Trichoderma reesei T131 bacterial agent and 10 parts by mass of Bacillus subtilis Bacillus subtilis Mix D9 microbial agent with 1 mass part of urea-formaldehyde resin liquid, add 0.3 mass part of coagulant ammonium chloride, stir evenly, spray granulate, and obtain microbial coating body.
[0056] ③ Preparation of ecological prefabricated blocks
[0057] a. Mix 80 parts by mass of curing agent with 270 parts by mass of dewatered river channel silt, add water according to the final water-to-binder ratio of 0.35, add 3 parts by mass of microbial coatings, and stir evenly to obtain the ecolo...
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Abstract
The present invention discloses ecological slope protection precast blocks and a preparation method and application thereof. The ecological slope protection precast blocks comprise the following raw materials: riverway sludge, a curing agent, plant source fibers and microorganism capsules, wherein the curing agent is a mixture of quick lime, fly ash, magnesium oxide and calcium sulfate; the plantsource fibers are plant straws; the microorganism capsules are formed by embedding functional microorganisms in urea formaldehyde resin; and the functional microorganisms are trichoderma reesei T131 and bacillus subtilis D9. The sludge, the plant source fibers and the microorganism capsules are cured by the curing agent to prepare the ecological slope protection precast blocks with the effects ofintercepting water body pollutants, performing field planting of plants and protecting slopes. Salt-resistant plant seeds are pre-attached in the ecological slope protection precast blocks or the salt-resistant plant seeds are sprayed to the surfaces of the precast blocks after the ecological slope protection precast blocks are paved. When the ecological slope protection precast blocks are used for tidal marsh silty bank slopes which are liquefied by meeting water and are collapsed by rainfall, the sewage nitrogen interception rate reaches 15-55%, the field planting success rate of the plantsis improved by 10-30 times, and the plant biomass is improved by 5-10 times.
Description
technical field [0001] The invention belongs to the technical field of vegetation restoration ecology and engineering materials science, and in particular relates to an ecological slope protection prefabricated block and its preparation method and application. Background technique [0002] Coastal tidal flats in China are mostly silty soil, which has the characteristics of no structure, easy liquefaction when exposed to water, and easy subsidence after rain. Ecological methods have the best effect on improving the stability of tidal flat slopes, ditches, seawalls and other slope protection, and promoting vegetation construction. However, the local soil has poor physical properties, high salinity, and low organic matter and nitrogen and phosphorus nutrients, which lead to difficulties in planting plants and poor ecological functions of tidal flats. The vicious cycle between low soil quality and lack of vegetation has become a major obstacle to ecological construction in the ...
Claims
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