Ecological artificial fish reef concrete utilizing various solid wastes and preparation method of ecological artificial fish reef concrete

An artificial fish reef and concrete technology, applied in solid waste management, sustainable waste treatment, cement production, etc., can solve the problem of low utilization rate of construction waste recycling, less than 10% recycling rate of construction waste, and acid-base balance in seawater environment. adverse effects, etc.

Inactive Publication Date: 2021-06-01
QINGDAO AGRI UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

With the development of society, the amount of construction waste will further increase, but the current resource utilization rate of construction waste is low, and the overall resource utilization rate of construction waste is less than 10%.
However, due to the use of ordinary cement as the cementitious material in the existing artificial fish reef concrete, the overall artificial fish reef is in a strongly alkaline environment, which is contrary to the acidic environment suitable for organisms, and the acid-base balance of the seawater environment is also affected by the dissolution of concrete. cause adverse effects

Method used

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  • Ecological artificial fish reef concrete utilizing various solid wastes and preparation method of ecological artificial fish reef concrete
  • Ecological artificial fish reef concrete utilizing various solid wastes and preparation method of ecological artificial fish reef concrete
  • Ecological artificial fish reef concrete utilizing various solid wastes and preparation method of ecological artificial fish reef concrete

Examples

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preparation example Construction

[0062] In the present invention, the preparation method of the oyster shell powder preferably includes the following steps: crushing the oyster shell and then sieving to obtain the oyster shell powder.

[0063] In the present invention, the crushing process preferably further includes: cleaning the oyster shells and removing impurities after drying. In an embodiment of the present invention, the oyster shells come from a breeding and processing plant in Panlong Village, Qingdao City. The present invention is not particularly limited to the cleaning, as long as dirt such as sludge on the surface of the oyster shell can be removed. The present invention has no special limitation to the drying, as long as the moisture on the surface of the oyster shell after cleaning can be removed. In the present invention, the removal of impurities is preferably to remove the remaining oyster meat in the oyster shell.

[0064] In the present invention, there is no special limitation on the cr...

Embodiment 1

[0100] Collect discarded oyster shells from the breeding and processing factory in Panlong Village, Qingdao City, and dry the collected oyster shells in a cleaning pot to remove the remaining oyster meat in the oyster shells after drying; crush the removed oyster shells and pass through a 16-mesh standard net Sieve, take the undersieve, and obtain oyster shell powder with a particle size below 1000 μm (specific surface area is 0.230~0.300m 2 / g, the apparent density is 3050~3065kg / m 3 );

[0101] After the construction waste is crushed, the recycled aggregate with a particle size of 5-20 mm (apparent density of 2623 kg / m 3 ; water absorption rate is 3.2%; porosity is 50.9%; crushing value is 25.4%; needle flake particle mass content is 15.8%);

[0102] Stir 445kg of ordinary Portland cement P.O 42.5, 167kg of water and 1.67kg of non-air-entraining aliphatic superplasticizer at a speed of 45r / min for 60s to obtain cement slurry;

[0103] The cement slurry and 111kg of oyster...

Embodiment 15

[0114] Put the artificial fish reef concrete prepared in Examples 1 to 14 and the comparative example in three layers into a cube mold with a size of 100mm×100mm×100mm. The concrete mold was removed after being set at 23° C. for 24 hours; the removed product was maintained at 20° C. in an environment with a relative humidity of 95% for 28 days to obtain an artificial fish reef.

[0115] The physical figure of the finalized artificial fish reef concrete prepared by the artificial fish reef concrete prepared in Example 1 is as follows Figure 4 As shown, the section diagram of the finalized artificial fish reef concrete is as follows Figure 5 shown. Depend on Figure 4 and Figure 5 The finalized artificial fish reef concrete shown has a certain porosity and is suitable for the survival of marine organisms.

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Abstract

The invention belongs to the technical field of artificial fish reefs, and particularly relates to ecological artificial fish reef concrete using various solid wastes and a preparation method thereof. The invention provides ecological artificial fish reef concrete utilizing various solid wastes. The ecological artificial fish reef concrete is prepared from the following raw materials in parts by mass: 1420-1598 parts of aggregate, 555-657 parts of fine materials, 1-5 parts of a water reducing agent and 164-197 parts of water, the aggregate comprises natural aggregate and / or recycled aggregate, and the recycled aggregate accounts for 0-100% of the aggregate in percentage by mass; the recycled aggregate is prepared from construction waste; the fine material comprises cement or a mixture of cement and oyster shell powder, and the oyster shell powder accounts for 0-40% of the mass of the mixture of cement and oyster shell powder; the recycled aggregate and the oyster shell powder cannot be 0 at the same time. Cement is partially replaced by the oyster shell powder, so that the alkalinity of the concrete is reduced, and the influence of the artificial fish reef on the living environment of marine organisms is avoided.

Description

technical field [0001] The invention belongs to the technical field of artificial fish reefs, and in particular relates to an ecological artificial fish reef concrete utilizing various solid wastes and a preparation method thereof. Background technique [0002] According to the report released by Qianzhan Industry Research Institute, 500 to 600 tons of construction waste will be generated during the construction of every 10,000 square meters of buildings, and 7,000 to 12,000 tons of construction waste will be generated when 10,000 square meters of old buildings are demolished; The amount of garbage accounts for more than 30% of the total amount of urban garbage. With the development of society, the amount of construction waste will further increase, but the current resource utilization rate of construction waste is low, and the overall resource utilization rate of construction waste is less than 10%. Therefore, how to try to broaden the ways and channels of resource utiliza...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B7/24
CPCC04B28/04C04B7/24C04B2201/50C04B14/048C04B18/16C04B2103/302Y02P40/10
Inventor 全洪珠丛干文张思雨孟丹王亮孔佳丰孙嘉卿
Owner QINGDAO AGRI UNIV
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