High-strength steel slag concrete for building artificial fish reef

A high-strength steel and artificial fish reef technology, which is applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the limitations of artificial fish reef structure size and structure shape, poor surface hardness and corrosion resistance, concrete Require high-level issues to achieve the effect of improving marine biodiversity, rough surface, and strong water permeability

CN105693168AInactive Publication Date: 2016-06-22TIANJIN BOHAI SEA FISHERIES RES INST
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2016-06-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a high-strength steel slag concrete for building an artificial fish reef. The high-strength steel slag concrete is prepared from, by mass, 400-450 parts of ordinary Portland cement clinker, 1200-1500 parts of waste steel slag, 580-620 parts of dry river sand, 185-200 parts of water and 25-35 parts of an additive, wherein the crushing value of the waste steel slag is smaller than 20%, the loose stacking density of coarse aggregate of the steel slag ranges from 1.60 g / cm<3> to 1.70 g / cm<3>, the close packing density ranges from 1.80 g / cm<3> to 1.85 g / cm<3>, the average water absorption ranges from 3.3% to 3.6%, and the alkalinity ranges from 2.30% to 2.35%. The high-strength concrete artificial fish reef prepared from the steel slag has the advantages of being large in density, high in strength, coarse in surface, good in stability and high in abrasion resistance and durability; meanwhile, the cost of the concrete is reduced, and a new way is found for utilizing the waste steel slag.
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Description

technical field

[0001] The invention belongs to the technical field of marine artificial fish reef building materials, and in particular relates to a high-strength steel slag concrete used for building artificial fish reefs. Background technique

[0002] Artificial reefs are structures artificially placed in the sea, which can provide a safe place for the habitat, growth and breeding of fish and other aquatic organisms, and create a suitable growth environment. In recent years, my country's coastal fishery industry structure is being adjusted, and the construction of artificial reef fisheries, as an important measure to restore and improve the marine ecological environment, multiply and optimize fishery resources, protect biodiversity, and promote the sustainable and healthy development of the marine economy, has been recognized Widely recognized and achieved good results. However, the marine environment is complex and harsh, and the concrete used to build marine artificial ...

Examples

example 1

[0030] A high-strength steel slag concrete used for building artificial fish reefs, comprising the following components in parts by mass:

[0031]

[0032]

[0033] Wherein, the density of the ordinary Portland cement clinker is 3.02g / cm 3 ;The initial setting time of cement is 212min>45min, the final setting time is 280min2 , dicalcium silicate 2CaO·SiO 2 , Tricalcium aluminate 3CaO·Al 2 o 3 and tetracalcium aluminoferrite 4CaO·Al 2 o 3 · Fe 2 o 3 ;

[0034] Wherein, the crushing value of the steel scrap slag is 12.8%3 , close packing density at 1.80g / cm 3 , the average water absorption rate is 3.3%, and the basicity of steel slag is calculated by M=CaO / (SiO 2 +P 2 o 5 )%, with an alkalinity of 2.30%, which belongs to medium active slag, and the main mineral composition is olivine 2FeO·SiO 2 , dicalcium silicate 2CaO·SiO 2 , tricalcium silicate 3CaO·SiO 2 , dicalcium ferrite 2CaO·Fe 2 o 3 , fluorapatite 9CaO·3P 2 o 5·CaF 2 and free calcium oxide fCaO; ...

example 2

[0040] A high-strength steel slag concrete used for building artificial fish reefs, comprising the following components in parts by mass:

[0041]

[0042] Wherein, the density of the ordinary Portland cement clinker is >3.02g / cm 3 ; The initial setting time of cement is 186min>45min, the final setting time is 310min2 , dicalcium silicate 2CaO·SiO 2 , Tricalcium aluminate 3CaO·Al 2 o 3 and tetracalcium aluminoferrite 4CaO·Al 2 o 3 · Fe 2 o 3 ;

[0043] Wherein, the crushing value of the steel scrap slag is 8.3%3 , close packing density at 1.83g / cm 3 , the average water absorption rate is 3.5%, and the basicity of steel slag is calculated as M=CaO / (SiO 2 +P 2 o 5 )%, with an alkalinity of 2.33%, which belongs to medium active slag, and the main mineral composition is olivine 2FeO·SiO 2 , dicalcium silicate 2CaO·SiO 2 , tricalcium silicate 3CaO·SiO 2 , dicalcium ferrite 2CaO·Fe2O 3 , fluorapatite 9CaO·3P 2 o 5 ·CaF 2 and free calcium oxide fCaO;

[0044] Whe...

example 3

[0049] A high-strength steel slag concrete used for building artificial fish reefs, comprising the following components in parts by mass:

[0050]

[0051] Wherein, the density of the ordinary Portland cement clinker is >3.00g / cm 3 ;The initial setting time of cement is 121min>45min, the final setting time is 237min2 , dicalcium silicate 2CaO·SiO 2 , Tricalcium aluminate 3CaO·Al 2 o 3 and tetracalcium aluminoferrite 4CaO·Al 2 o 3 · Fe 2 o 3 ;

[0052] Wherein, the crushing value of the steel scrap slag is 13.23 , close packing density is 1.85g / cm 3 , the average water absorption rate is 3.6%, and the basicity of steel slag is calculated as M=CaO / (SiO 2 +P 2 o 5 )%, the alkalinity is between 2.35%, which belongs to the medium active slag, and the main mineral composition is olivine 2FeO·SiO 2 , dicalcium silicate 2CaO·SiO 2 , tricalcium silicate 3CaO·SiO 2 , dicalcium ferrite 2CaO·Fe 2 o 3 , fluorapatite 9CaO·3P 2 o 5 ·CaF 2 and free calcium oxide fCaO;

...