CN104529286A - Novel concrete artificial fish reef and preparation method thereof - Google Patents

Abstract

A new type of concrete artificial fish reef, which is made of the following raw materials: cement: sand: gravel: mixing water: oyster shell powder: powder ash: mineral powder The mass ratio is: 1: (1.9～2.6) :(2.8～3.9):(0.4～0.6):(0.1～0.2):(0.1～0.3):(0.1～0.5); the preparation method is: add the above raw materials into the concrete mixer, after stirring, put it on the vibrating table Vibrate and compact evenly, remove the formwork after 12-24 hours; carry out standard maintenance for 28 days after removing the formwork. The invention does not dissolve harmful substances during use, does not affect biological adhesion, has no pollution to the environment, has more suitable performance for the marine environment, and can improve the effect of artificial fish reefs.

Description

A new type of concrete artificial fish reef and its preparation method

technical field

The invention relates to the utilization of waste materials in marine fishery, in particular to a novel concrete artificial fish reef and a preparation method thereof, belonging to the field of environmental protection and the technical field of fishery infrastructure.

Background technique

The construction of artificial reefs is a complicated submarine project, often requiring huge investment. At present, concrete artificial reefs are widely used in coastal areas at home and abroad. But concrete is not a once-and-for-all durable material. The shortcomings and limitations in actual engineering are mainly manifested in several aspects: (1) Deterioration phenomena such as cracking and edge collapse of concrete will seriously threaten the durability of concrete structures, resulting in the actual engineering The service life is shorter than the designed service life; (2) Concrete artificial fish reef needs to consume a lot of cement, sand, stone, the cost of raw materials is high, and waste resources; (3) The concrete artificial fish reef made of ordinary cement, its surface and internal Strong resistance, not conducive to the attachment of algae and the proliferation of fish. How to ensure that the construction of artificial reefs can have a reasonable budget and achieve the expected results, the research on durable concrete artificial reefs is very important.

In recent years, my country's oyster farming has developed rapidly, and the output increased from 85,000 tons in 1990 to 3.826 million tons in 2005. At present, my country's oyster shells, which account for more than 60% of oyster quality, are rarely processed, with about 2.3 million oyster shells each year. Tons of oyster shells have become waste or low-value resources, occupying some tidal flats and land, rotten and smelly, and have brought many adverse effects on the environment. At present, relevant research has been done on the utilization of marine shell materials such as oyster shells at home and abroad, but the research and application of using marine shell materials such as oysters as artificial fish reefs is still seldom. If these resources can be made full use of, nearby materials can be used as materials for artificial reefs, and the similarity of natural reef rocks can be increased, which can not only make full use of waste materials, turn waste into treasure, but also have great significance for environmental protection and resource conservation.

Material integration is one of the development trends of artificial reefs. Oyster shells, fly ash, mineral powder and other waste materials have been studied to some extent in building materials, but there are few reports on their comprehensive application in artificial reefs.

Contents of the invention

The technical problem to be solved by the present invention is to add waste materials such as oyster shells to common concrete artificial fish reefs, and study the mix ratio to prepare a new type of concrete artificial fish reefs to improve the comprehensive performance of artificial fish reefs.

In order to solve the problems of the technologies described above, the object of the present invention is to achieve through the following technical solutions:

A new type of concrete artificial fish reef is made of the following raw materials:

Cement: sand: gravel: mixing water: oyster shell powder: powder ash: the mass ratio of mineral powder is:

1:(1.9～2.6):(2.8～3.9):(0.4～0.6):(0.1～0.2):(0.1～0.3):(0.1～0.5);

The preparation method is as follows: adding the above-mentioned raw materials into a concrete mixer, after mixing, putting them on a vibrating table for vibration and uniform compaction, removing the formwork after 12-24 hours; and carrying out standard curing for 7-28 days after the form removal.

Among the above, oyster shell powder is prepared by the following method:

Wash the oyster shells, dry them, and crush them to about 0.5-0.8 cm.

Oyster shells are waste materials that can be used as fine aggregate after crushing.

The invention has the following advantages: (1) oyster shells are cheap, easy to obtain materials nearby, and cost less; oyster shells will not dissolve harmful substances during use, do not affect biological adhesion, and have no pollution to the environment, and are environmentally friendly materials; (2) due to The use of oyster shell materials, its main components are relatively stable, will not produce free Ca ³⁺ , and will not affect the stability of cement; (3) Since oyster shells themselves are marine waste materials, their performance is more suitable for marine environments, and artificial fish can be improved. reef effect.

Detailed ways

Example 1:

After cleaning, drying and crushing the oyster shells to 0.5-0.8 cm, mix cement: sand: gravel: mixing water: oyster shell powder: powder ash: mineral powder according to the mass ratio 1: 1.91: 2.89: 0.42: 0.10: 0.17 : 0.08 mixed into the concrete mixer, after mixing, put it on the vibrating table to vibrate and compact evenly, and remove the formwork after 24 hours; after the formwork removal, the concrete artificial fish reef will undergo standard maintenance for 28 days.

Example 2:

Wash the oyster shells, dry them in a desiccator, and crush them to 0.5-0.8 cm. Mix cement: sand: gravel: mixing water: oyster shells: powder ash: mineral powder in a mass ratio of 1: 2.18: 3.31: 0.48: 0.12 : 0.21: 0.21 mixed into the concrete mixer, after mixing, put it on the vibrating table to vibrate and compact evenly, remove the formwork after 24 hours; after the formwork removal, the concrete artificial reef will be maintained for 28 days.

Example 3:

Wash the oyster shells, dry them in a desiccator, and crush them to 0.5-0.8 cm, mix cement: sand: gravel: mixing water: oyster shells: powder ash: mineral powder according to the mass ratio 1: 2.55: 3.86: 0.55: 0.13 : 0.22: 0.44 mixed into the concrete mixer, after mixing, put it on the vibrating table to vibrate and compact evenly, remove the formwork after 24 hours; after the formwork removal, the concrete artificial fish reef will undergo standard maintenance for 28 days.

             

The novel concrete artificial fish reef performance of embodiment 1～3 is shown in Table 1:

Table 1 Composite material properties

the Example 1 Example 2 Example 3 cement 1 1 1 sand 1.91 2.18 2.55 pebbles 2.89 3.31 3.86 mixing water 0.42 0.48 0.55 oyster shell 0.10 0.11 0.13 powder gray 0.17 0.21 0.22 mineral powder 0.08 0.21 0.44 Slump (mm) 170 180 205 28d compressive strength/Mpa 52.2 50.2 52.6 Impermeability grade Meet P8 Meet P8 Meet P8

Above, the novel concrete artificial fish reef provided by the present invention and its preparation method have been introduced in detail. In this paper, specific examples have been used to illustrate the principle and implementation of the present invention. The descriptions of the above examples are only used to help understand the present invention. method and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, the contents of this specification should not be understood as Invention Limitations.

Claims (3)

1. a new concrete artificial marine habitat, is characterized in that, it is made up of the raw material of following proportioning:

Cement: husky: stone: mixing water: oyster shell powder: flyash: the mass ratio of breeze is:

1:(1.9～2.6):(2.8～3.9):(0.4～0.6):(0.1～0.2):(0.1～0.3):(0.1～0.5)；

Its preparation method is: above-mentioned raw materials is added concrete mixer, after stirring, is put into shaking table and carries out vibration uniform compaction, form removal after 12-24 hour; The laggard column criterion maintenance of form removal 28 days and get final product.

2. a kind of new concrete artificial marine habitat according to claim 1, is characterized in that, cement: husky: stone: mixing water: oyster shell powder: flyash: the mass ratio of breeze is 1:2.55:3.86:0.55:0.13:0.22:0.44.

3. a kind of new concrete artificial marine habitat according to claim 1 and 2, is characterized in that, oyster shell powder adopts following method to prepare:

Oyster shells is cleaned, dry, pulverize to 0.5-0.8 centimetre and get final product.