CN107540309A - A kind of slope-protecting prefabricated concrete concrete of iron-containing tailing and preparation method thereof - Google Patents
A kind of slope-protecting prefabricated concrete concrete of iron-containing tailing and preparation method thereof Download PDFInfo
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Abstract
The invention discloses slope-protecting prefabricated concrete concrete of a kind of iron-containing tailing and preparation method thereof, every cubic metre of each component for including following quality of slope-protecting prefabricated concrete concrete of iron-containing tailing：Iron tailings sand aggregate, cement, iron tailings powder, flyash, silicon ash, polycarboxylate water-reducer, defoamer, water；The iron tailings powder is chosen after a part is used as iron tailings sand aggregate by iron tailings sandy plain material, remainder is levigate gained.Slope-protecting prefabricated concrete concrete of the present invention, has that slump divergence is big, intensity is high, non-evaporating the characteristics of supporting i.e. early strong, good anti-carbonation and corrosion, and CHARACTERISTICS OF TAILINGS SAND reduces production cost as aggregate, levigate mine tailing replacement part flyash and has the value of environmental protection；Realize and exempt from vibration moulding, energy-saving and noise-reducing and avoid vibrator to fatigue rupture caused by punching block；Disposable Whole blanking shortens duty cycle, reduces task difficulty；Super instant coagulant replacement is steam-cured, improves production efficiency.
Description
Technical field
The present invention relates in particular to slope-protecting prefabricated concrete concrete of a kind of iron-containing tailing and preparation method thereof.
Background technology
The total amount of the existing iron tailings in China is 7,000,000,000 tons or so according to statistics, and the iron tailings largely stored up is to mining industry, environment
And economic dispatch causes many problems.According to SiO in Silicon-rich iron tailings2Content is high, chemical composition close to construction material characteristic,
Domestic scholars and enterprise have carried out largely to the utilization ways of iron tailings, but average utilization is no more than 10%, fails from basic
It is upper to solve the problems, such as.Patent of invention CN102850011A《A kind of process that RPC is prepared using iron tailings》It is public
A kind of utilization Mechanochemical Activation SiO is opened2The iron tailings of content 69% is by its grinding to specific surface area 600m2/ kg, then
With cement, silicon ash etc. are compound is used as active powder material, while using 0.16mm~1.25mm iron tailings as fine aggregate.But should
Invention is to SiO2Quality requirements are very high, and failing, which reduces cement consumption, reaches reduction concrete CO2Generation, only with 0.16mm
~1.25mm iron tailings causes the waste of a large amount of mine tailings, needed when inspiring iron tailings powder activity using high-temperature-hot-water maintenance and
HTHP conserves, and this also causes mass energy to waste and causes difficulty to technique popularization, it is difficult to a large amount of actual production constructions.
In recent years, the restoration of the ecosystem such as river, lake with rebuild be the disciplinary studies such as environment, water conservancy hot issue it
One.Ecological revetment prefabricated components gain great popularity as a kind of Novel environment-friendlymaterial material, with its diversified kind, and it is distinctive excellent
Point, it is widely used in the Ecological Restoration Projects such as ecological riverway, Landscape River, river lake coast protection embankment, realizes ecological beauty
See, the economy and environmental benefit of the sustainable development that conserves water and soil.But it is high to concrete conditions dictate, needed in casting process more
Secondary clearing cloth and vibrate, component uses steam curing mostly, and the damage of element mold is big.Patent of invention CN 2271570Y《One
Kind splicing slope-protecting prefabricated concrete》With CN 203559393U《A kind of river course slope protection prefabricated components》Disclosed from element mold angle
Two kinds of different slope-protecting prefabricated concretes, reduce the component quality problem caused by construction technology difficulty to a certain extent,
And the reason for universal phenomena such as component honeycomb, pitted skin, stomata hole, crack, sand spot are caused in actual production, is mainly by concrete
Caused by quality (because of concrete flowability deficiency, aggregate sedimentation, sticking poly- property difference etc.), therefore do not solve slope-protecting prefabricated concrete matter from basic
Amount problem.
RPC is the novel cement-based composite wood developed by Frenchman P.Richard the 1990s
Material, its maximum preparation characteristic：Reject coarse aggregate, low water binder ratio, optimize micro-structural using various active and inert mineral admixture,
Steel fibre toughness reinforcing, make it have big fluidised form, superhigh intensity, high-durability.
Prior art never refers to the preparation principle of RPC in slope-protecting prefabricated concrete concrete, because
This, it is necessary to develop slope-protecting prefabricated concrete RPC of a kind of iron-containing tailing and preparation method thereof, make its high-strength and
Excellent endurance quality can ensure that slope-protecting prefabricated concrete bears the corrosion of the flushing of water, carbonization, salts substances and microorganism.
The content of the invention
Present invention aim to solve the deficiency of above-mentioned background technology, there is provided a kind of high-strength and excellent durability
Slope-protecting prefabricated concrete concrete of iron-containing tailing and preparation method thereof.
The technical scheme is that：The slope-protecting prefabricated concrete concrete of a kind of iron-containing tailing, it is characterised in that every cube
Rice concrete includes each component of following quality：
The iron tailings powder is chosen after a part is used as iron tailings sand aggregate by iron tailings sandy plain material, remainder is levigate institute
.
Preferably, the iron tailings sand aggregate is by SiO2Mass percent is 50~80%, 0.15~4.75mm of particle diameter, thin
The iron tailings sandy plain material of degree modulus 1.6~2.0 is chosen a part and obtained.
Further, iron tailings powder is by remaining part of the iron tailings sandy plain material selection as iron tailings sand aggregate, machine
Tool grinding is to 600~1200m of specific surface area2/ kg is obtained.
Preferably, the cement be 52.5 Portland cements, specific surface area be 380~420m2/ kg, resistance to compression in 28 days
Intensity is not less than 58MPa.
Preferably, the flyash needs water ratio≤100%, 2200~2500kg/m of apparent density3, specific surface area 560~
640m2/kg。
Preferably, SiO in the silicon ash20.2~0.3 μm of mass percent >=90%, average grain diameter, apparent density 2100
~2400kg/m3, 19000~23000m of specific surface area2/kg。
Preferably, the polycarboxylate water-reducer is the powder water reducer of water-reducing rate >=30%.
The present invention also provides the preparation method of the slope-protecting prefabricated concrete concrete of any above-mentioned iron-containing tailing, and step is：
(1) iron tailings sand aggregate, cement, iron tailings powder, flyash, silicon ash are put into mixer and stir 4min；
(2) mass fraction 30-50% water is well mixed with polycarboxylate water-reducer, pours into and 3min is stirred in mixer；
(3) remaining water is well mixed with defoamer, pours into and 3min is stirred in mixer, obtained slope-protecting prefabricated concrete and mix
Solidifying soil.
Beneficial effects of the present invention are：
1. use 0.15~4.75mm iron tailings sand that there is ecological effect and alleviate because coarse aggregate sedimentation is made as aggregate
Into bottom leak stone problem.
2. the iron tailings sand without mud powder carries out grinding to certain fineness as mineral admixture through over cleaning, reach iron tailings
Sand it is maximum using value, and using iron tailings sand as fine aggregate, levigate iron tailings powder as mineral admixture, without using making
There is high intensity and excellent endurance quality with the case of steel fibre.
3. high intensity and high-durability can ensure that slope-protecting prefabricated concrete resistance to erosion in actual use, anti-carbonation and resistance to
Corrosive nature, the service life of component is substantially prolongs, reduce later stage frequently repairing work.Possess excellent ecological environment
Protection significance, while there is good economic value and social benefit.
Embodiment
With reference to specific embodiment, the present invention is described in further detail.Specific embodiment 1-8 formula such as table 1
It is shown.
The material property of each component is as follows：
Iron tailings sandy plain material：0.15~4.75mm of particle diameter, modulus of fineness 1.6~2.0, SiO2Mass percent be 50~
80%；
Iron tailings sand aggregate：Aequum is chosen by above-mentioned iron tailings sandy plain material to obtain, and is all 0.15~4.75mm of particle diameter, carefully
Spend modulus 1.6~2.0, SiO2Mass percent is 50~80%；
52.5 common silicate cement：Specific surface area is 380~420m2/ kg, compression strength is not less than 58MPa within 28 days；
Iron tailings powder：Remaining part as iron tailings sand aggregate is chosen by iron tailings sandy plain material, passes through machinery after cleaning
Power is levigate to 600~1200m of specific surface area2/kg；
Flyash：Need water ratio≤100%, 2200~2500kg/m of apparent density3, 560~640m of specific surface area2/kg；
Silicon ash：SiO2Mass percent >=90%, 0.2~0.3 μm of average grain diameter, 2100~2400kg/m of apparent density3,
19000~23000m of specific surface area2/kg；
Polycarboxylate water-reducer is that the powder of the production of Zhong Jiaowu Gang Yuan new materials company, model S06 and water-reducing rate >=30% subtracts
Aqua.
Embodiment 1
As shown in table 1, the slope-protecting prefabricated concrete concrete of every cubic metre of iron-containing tailing, including following components：
Iron tailings sand aggregate 1130kg, cement 769kg, iron tailings powder 120kg, flyash 102kg, silicon ash 154kg, poly- carboxylic
Sour water reducer 20kg, defoamer 3kg, water 245kg.
The compositing formula of the embodiment 1-8 concrete of table 1
Embodiment 2
As shown in table 1, the slope-protecting prefabricated concrete concrete of every cubic metre of iron-containing tailing, including following components：
Iron tailings sand aggregate 1080kg, cement 756kg, iron tailings powder 108kg, flyash 108kg, silicon ash 122kg, poly- carboxylic
Sour water reducer 22kg, defoamer 2kg, water 240kg.
Embodiment 3
As shown in table 1, the slope-protecting prefabricated concrete concrete of every cubic metre of iron-containing tailing, including following components：
Iron tailings sand aggregate 1030kg, cement 684kg, iron tailings powder 171kg, flyash 171kg, silicon ash 114kg, poly- carboxylic
Sour water reducer 23kg, defoamer 4kg, water 230kg.
Embodiment 4
As shown in table 1, the slope-protecting prefabricated concrete concrete of every cubic metre of iron-containing tailing, including following components：
Iron tailings sand aggregate 1050kg, cement 690kg, iron tailings powder 135kg, flyash 140kg, silicon ash 120kg, poly- carboxylic
Sour water reducer 21kg, defoamer 3kg, water 235kg.
Embodiment 5
As shown in table 1, the slope-protecting prefabricated concrete concrete of every cubic metre of iron-containing tailing, including following components：
Iron tailings sand aggregate 1070kg, cement 710kg, iron tailings powder 140kg, flyash 120kg, silicon ash 135kg, poly- carboxylic
Sour water reducer 21.5kg, defoamer 2kg, water 240kg.
Embodiment 6
As shown in table 1, the slope-protecting prefabricated concrete concrete of every cubic metre of iron-containing tailing, including following components：
Iron tailings sand aggregate 1100kg, cement 720kg, iron tailings powder 155kg, flyash 130kg, silicon ash 145kg, poly- carboxylic
Sour water reducer 22.5kg, defoamer 4kg, water 238kg.
Embodiment 7
As shown in table 1, the slope-protecting prefabricated concrete concrete of every cubic metre of iron-containing tailing, including following components：
Iron tailings sand aggregate 1110kg, cement 740kg, iron tailings powder 160kg, flyash 146kg, silicon ash 150kg, poly- carboxylic
Sour water reducer 20.5kg, defoamer 2.5kg, water 243kg.
Embodiment 8
As shown in table 1, the slope-protecting prefabricated concrete concrete of every cubic metre of iron-containing tailing, including following components：
Iron tailings sand aggregate 1080kg, cement 750kg, iron tailings powder 165kg, flyash 150kg, silicon ash 118kg, poly- carboxylic
Sour water reducer 22kg, defoamer 3.5kg, water 232kg.
The preparation method of the slope-protecting prefabricated concrete concrete of above-described embodiment 1-8 iron-containing tailings, step are：
(1) iron tailings sand aggregate, cement, iron tailings powder, flyash, silicon ash are put into mixer and stir 4min；
(2) mass fraction 30-50% water (30-50% of water gross mass) is well mixed with polycarboxylate water-reducer, fallen
Enter and 3min is stirred in mixer；
(3) remaining water is well mixed with defoamer, pours into and 3min is stirred in mixer, obtained slope-protecting prefabricated concrete and mix
Solidifying soil.
Above-mentioned obtained slope-protecting prefabricated concrete concrete is subjected to strength test, as a result as shown in table 2.
Concrete bearing intension testing result is made in the embodiment 1-8 of table 2
Slope protection concrete not only needs the mechanical index for reaching needs, it is also necessary to meets large fluidity and high-durability energy.
Conventional concrete mobility is general, and moulding process requires high, and is in mostly in erosion environment, and service life is shorter.Can from table 2
Know, the mechanical property of this product is good, and pressure-proof and snap-resistent is good；Slump divergence is up to more than 770mm, represents that it has high flow
Property, mobility contributes to be molded greatly, while internal structure is closely knit, substantially increases corrosion resistance, can effectively improve use
In the life-span, there is good economic benefit.
Claims (8)
1. the slope-protecting prefabricated concrete concrete of a kind of iron-containing tailing, it is characterised in that include following quality per cubic meter of concrete
Each component：
The iron tailings powder is chosen after a part is used as iron tailings sand aggregate by iron tailings sandy plain material, remainder is levigate gained.
2. prepare dry powder of active powder concrete and use method of dry powder using iron tailings as claimed in claim 1, it is characterised in that the iron tail
Ore in sand form aggregate is by SiO2Mass percent is 50~80%, 0.15~4.75mm of particle diameter, the iron tailings of modulus of fineness 1.6~2.0
Sandy plain material is chosen a part and obtained.
3. prepare dry powder of active powder concrete and use method of dry powder using iron tailings as claimed in claim 2, it is characterised in that iron tailings powder
Remaining part as iron tailings sand aggregate is chosen by the iron tailings sandy plain material, mechanical grinding is to specific surface area 600 after cleaning
~1200m2/ kg is obtained.
4. prepare dry powder of active powder concrete and use method of dry powder material using iron tailings as claimed in claim 1, it is characterised in that the water
Mud is 52.5 portland cements, specific surface area is 380~420m2/ kg, compression strength is not less than 58MPa within 28 days.
5. prepare dry powder of active powder concrete and use method of dry powder using iron tailings as claimed in claim 1, it is characterised in that the fine coal
Ash needs water ratio≤100%, 2200~2500kg/m of apparent density3, 560~640m of specific surface area2/kg。
6. prepare dry powder of active powder concrete and use method of dry powder using iron tailings as claimed in claim 1, it is characterised in that the silicon ash
Middle SiO20.2~0.3 μm of mass percent >=90%, average grain diameter, 2100~2400kg/m of apparent density3, specific surface area
19000~23000m2/kg。
7. iron tailings as claimed in claim 1 prepares dry powder of active powder concrete and use method of dry powder using iron tailings, it is characterised in that
The polycarboxylate water-reducer is the powder water reducer of water-reducing rate >=30%.
8. the preparation method of the slope-protecting prefabricated concrete concrete of iron-containing tailing, step as described in any in a kind of 1-7 such as claim
For：
(1) iron tailings sand aggregate, cement, iron tailings powder, flyash, silicon ash are put into mixer and stir 4min；
(2) mass fraction 30-50% water is well mixed with polycarboxylate water-reducer, pours into and 3min is stirred in mixer；
(3) remaining water is well mixed with defoamer, pours into and 3min is stirred in mixer, obtain slope-protecting prefabricated concrete coagulation
Soil.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108821687A (en) * | 2018-07-16 | 2018-11-16 | 长江水利委员会长江科学院 | Make the water conservancy project scour and abrasion resistant concrete and preparation method thereof of aggregate with high density tailing |
| CN110698098A (en) * | 2019-09-25 | 2020-01-17 | 中建西部建设北方有限公司 | Corrosion-resistant iron tailing aggregate, corrosion-resistant concrete and preparation method thereof |
| CN111205038A (en) * | 2020-01-19 | 2020-05-29 | 河北农业大学 | Pumping total iron tailing concrete and preparation method thereof |
| CN111348871A (en) * | 2018-12-21 | 2020-06-30 | 西南科技大学 | High-titanium slag sand reactive powder concrete and preparation method thereof |
| CN112174581A (en) * | 2020-08-26 | 2021-01-05 | 北京鼎创科技环保集团有限公司 | Ultra-high performance concrete and manufacturing method for manufacturing decorative material by using same |
| CN113149500A (en) * | 2021-01-13 | 2021-07-23 | 东北大学 | Iron tailing activation mode and multi-solid waste iron tailing concrete |
| CN114230269A (en) * | 2021-12-06 | 2022-03-25 | 中交二公局第三工程有限公司 | Manufacturing method capable of improving forming speed of iron tailing concrete prefabricated part |
| CN114573295A (en) * | 2022-03-08 | 2022-06-03 | 河北农业大学 | Green iron tailing concrete with high carbonization resistance and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006126752A1 (en) * | 2005-03-24 | 2006-11-30 | Geocon Materials.Inc. | A concrete admixture using waste tailing and methode of thereof |
| CN102850011A (en) * | 2011-07-01 | 2013-01-02 | 北京建筑材料科学研究总院有限公司 | Technological process for preparing active powder concrete by using iron tailing |
| CN105036621A (en) * | 2015-07-02 | 2015-11-11 | 中国十七冶集团有限公司 | High-strength superfine iron tailing mixed sand concrete |
| CN105236860A (en) * | 2015-09-11 | 2016-01-13 | 中国十七冶集团有限公司 | Iron tailings mixing sand concrete |
| CN105801017A (en) * | 2014-12-29 | 2016-07-27 | 中国建筑材料科学研究总院 | Normal-temperature maintenance-type active powder concrete and preparation method thereof |
| CN106892622A (en) * | 2017-03-29 | 2017-06-27 | 河北建筑工程学院 | A kind of large dosage iron tailing concrete and preparation method thereof |
-
2017
- 2017-09-15 CN CN201710834042.9A patent/CN107540309B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006126752A1 (en) * | 2005-03-24 | 2006-11-30 | Geocon Materials.Inc. | A concrete admixture using waste tailing and methode of thereof |
| CN102850011A (en) * | 2011-07-01 | 2013-01-02 | 北京建筑材料科学研究总院有限公司 | Technological process for preparing active powder concrete by using iron tailing |
| CN105801017A (en) * | 2014-12-29 | 2016-07-27 | 中国建筑材料科学研究总院 | Normal-temperature maintenance-type active powder concrete and preparation method thereof |
| CN105036621A (en) * | 2015-07-02 | 2015-11-11 | 中国十七冶集团有限公司 | High-strength superfine iron tailing mixed sand concrete |
| CN105236860A (en) * | 2015-09-11 | 2016-01-13 | 中国十七冶集团有限公司 | Iron tailings mixing sand concrete |
| CN106892622A (en) * | 2017-03-29 | 2017-06-27 | 河北建筑工程学院 | A kind of large dosage iron tailing concrete and preparation method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108821687A (en) * | 2018-07-16 | 2018-11-16 | 长江水利委员会长江科学院 | Make the water conservancy project scour and abrasion resistant concrete and preparation method thereof of aggregate with high density tailing |
| CN111348871A (en) * | 2018-12-21 | 2020-06-30 | 西南科技大学 | High-titanium slag sand reactive powder concrete and preparation method thereof |
| CN111348871B (en) * | 2018-12-21 | 2022-12-20 | 西南科技大学 | High-titanium slag sand reactive powder concrete and preparation method thereof |
| CN110698098A (en) * | 2019-09-25 | 2020-01-17 | 中建西部建设北方有限公司 | Corrosion-resistant iron tailing aggregate, corrosion-resistant concrete and preparation method thereof |
| CN111205038A (en) * | 2020-01-19 | 2020-05-29 | 河北农业大学 | Pumping total iron tailing concrete and preparation method thereof |
| CN112174581A (en) * | 2020-08-26 | 2021-01-05 | 北京鼎创科技环保集团有限公司 | Ultra-high performance concrete and manufacturing method for manufacturing decorative material by using same |
| CN113149500A (en) * | 2021-01-13 | 2021-07-23 | 东北大学 | Iron tailing activation mode and multi-solid waste iron tailing concrete |
| CN114230269A (en) * | 2021-12-06 | 2022-03-25 | 中交二公局第三工程有限公司 | Manufacturing method capable of improving forming speed of iron tailing concrete prefabricated part |
| CN114573295A (en) * | 2022-03-08 | 2022-06-03 | 河北农业大学 | Green iron tailing concrete with high carbonization resistance and preparation method thereof |
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