CN102518017B - Steel slag ecological permeable pavement brick and production method thereof - Google Patents

Steel slag ecological permeable pavement brick and production method thereof Download PDF

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Publication number
CN102518017B
CN102518017B CN201110439893.6A CN201110439893A CN102518017B CN 102518017 B CN102518017 B CN 102518017B CN 201110439893 A CN201110439893 A CN 201110439893A CN 102518017 B CN102518017 B CN 102518017B
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steel slag
pavement brick
substrate layer
permeable pavement
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CN102518017A (en
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唐欧靖
康明
顾文飞
张达春
金振兴
李建华
徐兵
帅同杰
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Zhanjiang Baosteel new type building material science and Technology Co Ltd
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Shanghai Baotian New Building Materials Co Ltd
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Abstract

The invention discloses a steel slag ecological permeable pavement brick and a production method thereof. The pavement brick comprises a substrate layer and a surface layer, wherein raw materials of the substrate layer comprise 10 to 35 weight percent of BPN50 steel slag molding sand, 10 to 25 weight percent of BPN100 steel slag molding sand, 15 to 65 weight percent of macadam and 15 to 25 weight percent of cement; and raw materials of the surface layer comprise 30 to 75 weight percent of BPN25 steel slag molding sand, 0 to 45 weight percent of quartz sand and 25 percent of cement, wherein iron content in the steel slag molding sand is less than 1 weight percent. The steel slag ecological permeable pavement brick is molded at normal temperature, is not needed to be sintered, is energy-saving and environment-friendly and has high compression strength, high abrasive resistance and obvious permeable effect; and steel slag can replace lots of natural macadam and quartz sand for producing the ecological permeable brick, metallurgical byproducts are effectively utilized, and the steel slag ecological permeable pavement brick has obvious social, economic and environment-friendly benefits.

Description

A kind of steel slag ecological permeable pavement brick and production method thereof
Technical field
The invention belongs to building material field, relate to taking slag as primary raw material and prepare steel slag ecological permeable pavement brick, more particularly, the present invention relates to a kind of steel slag ecological permeable pavement brick and production method thereof.
Background technology
Slag is the accessory substance in steelmaking process, and its discharge value is large, accounts for 15~20% of output of steel.Along with rapid development of economy; resource rational utilization, environmental protection consciousness are constantly strengthened; the processing and utilizing of slag is just being subject to the generally attention of countries in the world; developed country differs from one another according to the national conditions steel slag utilization aspect that do not coexist, but be used for marine reclamation land greatly, road base layer material, stockyard backfill and return raw materials for metallurgy and flux etc.
China's slag processing utilized in the starting stage, according to statistics, and the nearly 8,000 ten thousand tons of left and right of current national slag total release, but only 36% left and right of effective rate of utilization.Compared with developed countries, although the utilization rate of China's slag is not very high, through exploring decades, is utilizing technology and utilizing the characteristic that has formed oneself in method.It mainly utilizes approach to have: make the raw material of sintering deposit, make roadbed material, backfilling material, cement industry and building product etc.But compare with flyash with slag, no matter aspect the depth & wideth of research, or aspect effective rate of utilization, all seem that development is slower, have many pioneering works to do.
Meanwhile, along with Process of Urbanization Construction paces are accelerated, the ecological environment in city is bearing huge pressure.The earth's surface of modern city is progressively covered by the sclerosis of the material water-proof material such as building and concrete, has formed " the artificial desert " on ecology, and great negative effect is brought to the ecological environment in city in these fluid-tight road surfaces.Therefore, how in urban construction, to realize environmental protection and day by day cause people's attention with economic, social harmonious development.Steel slag ecological type pavior brick arises at the historic moment, and it has good water permeation performance and anti-wear performance, can make precipitation pass through itself and infiltrate bottom soil, supplements the groundwater resources in city, plays a part positive to the protection of groundwater resources.
Steel slag ecological type pavior brick is taking slag as main thick, fines, suitably be equipped with natural sand, stone and special gathering materials, and taking cement and slag micro powder etc. as main cementitious material, make through techniques such as batching, stirring, vibration, extrusion formings, for additionally arranging the rigid pavement in sidewalk, roadway, square, warehouse etc. and piece, the plate etc. of ground surface works.
This product can be widely used in the fields such as square, residential district, view road, sidewalk, gardens, warehouse terrace, there is the advantages such as resistance to compression, folding intensity is high, abrasion resistance good, resistance to overturning is good, long-term use is without " falling grain " phenomenon, can keep good permeable, airing function, alleviating urban heat island effect.
Summary of the invention
The object of the invention is effectively to utilize the slag solid waste resource of iron and steel enterprise, and a kind of steel slag ecological permeable pavement brick and production method thereof are provided, and in meeting the need of market, improves the added value of slag, develops the application approach that slag is brand-new simultaneously.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of steel slag ecological permeable pavement brick, is characterized in that, wherein steel slag mould sand Mohs' hardness is greater than 7, and crush values is less than 20%, presses steaming pulverization rate to be less than 5%; Structure comprises substrate layer, and the raw material of described substrate layer comprises the BPN50 steel slag mould sand of 10wt%~35wt%, the BPN100 steel slag mould sand of 10wt%~25wt%, rubble and the 15wt%~25wt% cement of 15wt%~65wt%; Described steel slag mould sand iron-holder is less than 1wt%.
Described BPN50 steel slag mould sand, particle grade is 2.5~5.0mm, 2.5mm tails over and is greater than 90%, 5.0mm and tails over and be less than 5%; Described BPN100 steel slag mould sand, particle grade is 5.0~10.0mm, 5.0mm tails over and is greater than 90%, 10.0mm and tails over and be less than 5%; Described rubble, particle grade is 5.0~15.0mm, 15.0mm tails over and is less than 5%.
Steel slag ecological permeable pavement brick of the present invention can also comprise the facestock layer being positioned on substrate layer, and the raw material of described facestock layer comprises the BPN25 steel slag mould sand of 30wt%~75wt%, the quartz sand of 0~45wt% and 25% cement.
In the raw material of described facestock layer, can also contain 2wt%~5wt% pigment of cement amount.
The mass ratio of described substrate layer and facestock layer is 5: 1~3: 1.
Described BPN25 steel slag mould sand, particle grade is 1.5~2.5mm, and 1.5mm tails over and is greater than 90%, 2.5mm and tails over and be less than 5%, and iron-holder is less than 1wt%; Described quartz sand, particle grade is 1.0~2.5mm, 2.5mm tails over and is less than 5%.
Steel slag ecological permeable pavement brick of the present invention makes as follows:
When preparation only has the steel slag ecological permeable pavement brick of substrate layer: raw material is mixed according to the ratio of setting, and the stirring that adds water, makes compound; Prepared compound is placed in to mould; Use forming machine extrusion forming at normal temperatures, exciting force 100~110KN, molding time 20~25s.
When preparation comprises the steel slag ecological permeable pavement brick of substrate layer and facestock layer: respectively by proportioning mixed material, the stirring that adds water, prepares substrate layer compound and facestock layer compound; Substrate layer compound is placed in mold bottom, and facestock layer compound is placed on substrate layer compound, and the mass ratio of substrate layer compound and facestock layer compound is 5: 1~3: 1; Use forming machine extrusion forming at normal temperatures, exciting force 100~110KN, molding time 20~25s.In the time of the described facestock layer compound of preparation, can mix cement amount 2wt%~5wt% pigment.
Steel slag ecological permeable pavement brick of the present invention is compared prevailing roadway brick: at normal temperature condition compacted under, do not need sintering, energy-conserving and environment-protective; Have higher compressive strength, abrasion resistance is better, and permeable successful contributes to the Water, steam circulation on road surface, alleviating urban heat island effect; Can substitute in a large number natural rubble and quartz sand and produce environmental water-permeable brick, effectively utilize metallurgical accessory substance, reduce production costs, there is obvious society, economy and environmental benefit.
Detailed description of the invention
Below in conjunction with specific embodiment, further set forth the present invention.
Primary raw material steel slag mould sand of the present invention is that original state slag is through jaw crusher, permanent magnetic pulley magnetic separator and single-layer type multi-stage oscillating screen, be processed into the steel slag mould sand of size fractionated, each grade steel slag mould sand iron-holder is less than 1wt%, Mohs' hardness is greater than 7, crush values is less than 20%, presses steaming pulverization rate to be less than 5%.
Embodiment 1: preparation comprises the steel slag ecological permeable pavement brick of substrate layer and facestock layer
(1) pigment of 50kgBPN25 steel slag mould sand, 25kg quartz sand and 24.25kg cement and 0.75kg is added to mixer, the facestock layer raw material of composition steel slag ecological type permeable pavement brick, add appropriate water, fully stir, make facestock layer compound;
(2) 15kgBPN50 steel slag mould sand, 10kgBPN100 steel slag mould sand, 57kg rubble and 18kg cement are added to mixer, form the substrate layer raw material of steel slag ecological type permeable pavement brick, add the water of 7kg, fully stir, make substrate layer compound;
(3) substrate layer compound is placed in to mold bottom, by facestock layer mixture laying, on substrate layer compound, the mass ratio of facestock layer compound and substrate layer compound is 1: 4;
(4) use forming machine extrusion forming, exciting force 110KN, molding time 20s;
(5) after moulding, brick body is placed on supporting plate, is transported to fog room maintenance by chain transport machine.
Made steel slag ecological type permeable pavement brick, compressive strength reaches 38.5Mpa, mill hole length 20mm, freezing-thawing strength damage 7.8%, coefficient of permeability 4.0*10 -2cm/s.
Embodiment 2: preparation only includes the steel slag ecological permeable pavement brick of substrate layer
(1) 20kgBPN50 steel slag mould sand, 15kgBPN100 steel slag mould sand, 47kg rubble and 18kg cement are added to mixer, form the substrate layer raw material of steel slag ecological type permeable pavement brick, add the water of 7kg, fully stir, make substrate layer compound;
(2) substrate layer compound evenly paves in mould;
(3) use forming machine extrusion forming, exciting force 105KN, molding time 25s;
(4) after moulding, brick body is placed on supporting plate, is transported to fog room maintenance.
Made steel slag ecological type permeable pavement brick, compressive strength reaches 39.5Mpa, mill hole length 27mm, freezing-thawing strength damage 7.5%, coefficient of permeability 4.0*10 -2cm/s.
Above-described embodiment is interpreted as being only not used in and limiting the scope of the invention for the present invention is described.After having read the content of the present invention's record, those skilled in the art can make various changes or modifications the present invention, and these equivalences change and modification falls into the scope of the claims in the present invention equally.

Claims (8)

1. a steel slag ecological permeable pavement brick, is characterized in that, wherein steel slag mould sand Mohs' hardness is greater than 7, and crush values is less than 20%, presses steaming pulverization rate to be less than 5%; Structure comprises substrate layer, and the raw material of described substrate layer comprises the BPN50 steel slag mould sand of 10wt%~35wt%, the BPN100 steel slag mould sand of 10wt%~25wt%, rubble and the 15wt%~25wt% cement of 15wt%~65wt%; Described BPN50 steel slag mould sand and BPN100 steel slag mould sand iron-holder are less than 1wt%; Also comprise the facestock layer being positioned on substrate layer, the raw material of described facestock layer comprises the BPN25 steel slag mould sand of 30wt%~75wt%, the quartz sand of 0~45wt% and 25% cement.
2. steel slag ecological permeable pavement brick according to claim 1, is characterized in that, described BPN50 steel slag mould sand, and particle grade is 2.5~5.0mm, 2.5mm tails over and is greater than 90%, 5.0mm and tails over and be less than 5%; Described BPN100 steel slag mould sand, particle grade is 5.0~10.0mm, and 5.0mm tails over and is greater than 90%, 10.0mm and tails over and be less than 5%, and iron-holder is less than 1wt%.
3. steel slag ecological permeable pavement brick according to claim 1, is characterized in that, described BPN25 steel slag mould sand, and particle grade is 1.5~2.5mm, and 1.5mm tails over and is greater than 90%, 2.5mm and tails over and be less than 5%, and iron-holder is less than 1wt%.
4. steel slag ecological permeable pavement brick according to claim 1, is characterized in that, also contains the pigment of cement amount 2wt%~5wt% in the raw material of described facestock layer.
5. steel slag ecological permeable pavement brick according to claim 1, is characterized in that, the mass ratio of described substrate layer and facestock layer is 5:1~3:1.
6. the production method of steel slag ecological permeable pavement brick according to claim 1 and 2, is characterized in that, raw material is mixed according to the ratio of setting, and the stirring that adds water, makes compound; Prepared compound is placed in to mould; Use forming machine extrusion forming at normal temperatures, exciting force 100~110KN, molding time 20~25s.
7. production method according to claim 6, is characterized in that, by proportioning mixed material, the stirring that adds water, prepares substrate layer compound and facestock layer compound respectively; Substrate layer compound is placed in mold bottom, and facestock layer compound is placed on substrate layer compound, and the mass ratio of substrate layer compound and facestock layer compound is 5:1~3:1; Use forming machine extrusion forming at normal temperatures, exciting force 100~110KN, molding time 20~25s.
8. production method according to claim 7, is characterized in that, described facestock layer compound mixes cement amount 2wt%~5wt% pigment in the preparation.
CN201110439893.6A 2011-12-23 2011-12-23 Steel slag ecological permeable pavement brick and production method thereof Active CN102518017B (en)

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CN102785285B (en) * 2012-08-25 2015-03-18 上海宝田新型建材有限公司 Preparation method of alkali-efflorescence-resistant and fading-resistant colorful steel slag pavior brick
CN103541288A (en) * 2013-09-29 2014-01-29 机械工业第三设计研究院 High-performance environment-friendly permeable brick and production method thereof
CN103541289A (en) * 2013-11-06 2014-01-29 攀枝花环业冶金渣开发有限责任公司 Colored high-titanium heavy slag permeable pavement brick and production method thereof
CN103626447B (en) * 2013-12-02 2015-10-28 山东交通学院 Ecological permeable pavement brick and preparation method thereof
CN104003666A (en) * 2014-06-03 2014-08-27 上海宝冶钢渣综合开发实业有限公司 High-early-strength steel slag pervious concrete as well as preparation method and applications thereof
CN104441206B (en) * 2014-10-16 2017-10-13 内江市恒世达建材有限公司 The preparation method of concrete road pavement brick with water penetration
CN104341136B (en) * 2014-10-16 2016-11-30 内江市恒世达建材有限公司 There is the concrete road pavement brick fabric of water penetration
CN105016642B (en) * 2015-08-14 2017-03-29 昆明钢铁控股有限公司 A kind of environmental protection and energy saving slag water-permeable brick and preparation method thereof
CN106045416B (en) * 2016-05-30 2018-04-06 山东金艺城建股份有限公司 A kind of green high-strength water-permeable brick
CN106747058A (en) * 2016-11-28 2017-05-31 广西铁合金有限责任公司 Double-layer baking-free permeable brick with silicon manganese alloy slag as aggregate and preparation method thereof
CN108129084B (en) * 2017-12-28 2020-08-11 杨杰 Method for preparing high-strength water permeable brick by compounding coal gangue steel slag and wheat straw ash
CN110054500A (en) * 2019-03-11 2019-07-26 南京思宇环保科技有限公司 A method of environmental protection brick is prepared using steel-making waste residue

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