CN105481319A - Concrete prepared from aggregate chips, iron tailing sand and polycarboxylic acid water reducing agent - Google Patents
Concrete prepared from aggregate chips, iron tailing sand and polycarboxylic acid water reducing agent Download PDFInfo
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- CN105481319A CN105481319A CN201511019221.4A CN201511019221A CN105481319A CN 105481319 A CN105481319 A CN 105481319A CN 201511019221 A CN201511019221 A CN 201511019221A CN 105481319 A CN105481319 A CN 105481319A
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- Prior art keywords
- concrete
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- water
- aggregate chips
- reducer
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention relates to a building raw material, in particular to a concrete prepared from aggregate chips, iron tailing sand and a polycarboxylic acid water reducing agent. The concrete comprises the following components in parts by weight: 239-262 parts of cement, 45-55 parts of fly ash, 71-84 parts of mineral powder, 190-210 parts of tailing sand, 800-830 parts of aggregate chips, 780-820 parts of pebbles, 163-175 parts of water, 4.8-4.9 parts of a polycarboxylic acid water reducing agent, wherein the sand rate is 0.55-0.57; the fineness modulus of the aggregate chips is 3.1, and the fineness modulus of the tailing sand is 1.7; the particle size of the pebbles is 5-31.5mm in continuous grading; and the polycarboxylic acid water reducing agent contains 0.5% of a thickening agent. Machine-made sand and river sand, which are produced by grinding pebbles according to grading, are replaced by using generally produced aggregate chips and iron tailing sand, so that the production cost is reduced, and the adaptability of a fine aggregate of the concrete with the polycarboxylic acid water reducing agent is improved; and the high water-reducing effect of the polycarboxylic acid water reducing agent is adopted, so that the water consumption is reduced, and the quality of the concrete is ensured.
Description
Technical field
The present invention relates to a kind of building material, be specifically related to a kind of concrete, particularly relate to a kind of concrete adopting aggregate chips iron tailings sand and polycarboxylate water-reducer preparation.
Background technology
Ready mixed concrete is one of engineering raw material main in current building operation.The features such as ready mixed concrete has abundant raw material, cheap, production technique simple, easy construction, thus usage quantity is increasing.Meanwhile, it is high that ready mixed concrete has ultimate compression strength, steady quality, good endurance, the features such as convenient, environmentally-friendly sanitary of constructing.Generic field ready-mixed concrete is by cement, river sand, clear water mix, plays material of construction bonding one, form the effect of firm entirety through sclerosis.
In recent years, along with growing continuously and fast of fundamental construction, concrete consumption sharply increases.River sand is the necessary material ensureing concrete strength, and its consumption also sharply increases.Present site construction substantially all uses river sand mixing mortar, and using river sand has higher dependency.Because river sand resource is also reducing day by day, national environmental protection such as to strengthen day by day at the reason, and in order to protect limited river sand resource, people are finding the starting material that can substitute river sand in mortar preparation.
Polycarboxylate water-reducer is widely used high-performance water reducing agent in recent years, and its production is not polluted environment, and extensive to gelling material adaptability such as cement, the advantages such as slump increment rate is high, and volume is low are applied extensively in concrete production.
Aggregate chips is also known as artificial sand, and surface ratio river sand is rough, has sharp corners, is less than the stone flour of 0.16mm containing more particle diameter, is the byproduct after stone processing.Containing comparatively particle in aggregate chips, also containing powder, the intensity of this grating mixture is higher, good with the gelling material cohesiveness such as cement.If aggregate chips can be adopted to substitute river sand configuration concrete, then not only protect limited river sand resource, also take full advantage of aggregate chips, namely decrease environmental pollution, again reduce production cost.
Adopting iron ore tailings is the waste material that iron ore produces in mining and the course of processing, and owing to reasonably not utilized, the accumulation that CHARACTERISTICS OF TAILINGS SAND is a large amount of, occupies soil, and cause environmental pollution.Therefore in building concrete, use CHARACTERISTICS OF TAILINGS SAND, both solved concrete aggregate scarcity, decreased the pollution to environment simultaneously.
Summary of the invention
The object of the invention is to overcome the dependency to the Machine-made Sand produced by grating and river sand of ready mixed concrete in prior art, seek to design a kind of concrete adopting aggregate chips iron tailings sand and polycarboxylate water-reducer preparation, the Machine-made Sand using the aggregate chips of common production and adopting iron ore tailings to replace needing grinding stone to produce by grating and river sand, reduce production cost, improve the adaptability of its fine aggregate and polycarboxylate water-reducer, adopt the effect of polycarboxylate water-reducer height diminishing, reduce water consumption, ensure concrete quality.
To achieve these goals, the technical solution used in the present invention is:
A kind of concrete adopting aggregate chips iron tailings sand and polycarboxylate water-reducer preparation, count by weight, comprise following component: cement 239-262 part, flyash 45-55 part, breeze 71-84 part, CHARACTERISTICS OF TAILINGS SAND 190-210 part, aggregate chips 800-830 part, stone 780-820 part, water 163-175 part, polycarboxylate water-reducer 4.8-4.9 part, wherein sand coarse aggregate ratio is 0.55-0.57;
The fineness modulus of described aggregate chips is 3.1, and silt content is 5%; The fineness modulus of described CHARACTERISTICS OF TAILINGS SAND is 1.7; The particle diameter of described stone is 5-31.5mm continuous grading, and silt content is less than or equal to 2.4%;
Described polycarboxylate water-reducer contains the thickening material of 0.5%.
Preferably, described cement is blue or green alkali 42.5 ordinary Portland cement, and its 3 days intensity are 23.1MPa, and 28 days intensity is 51.6MPa.
Preferably, described breeze is S95 level breeze, and its 7 days specific activitys 86%, 28 days specific activitys 98%, specific surface area is 435mm2/g, water demand ratio 98%.
Preferably, described flyash is power station II level flyash, and fineness is 8.6, water demand ratio 97%, and within 28 days, activity index is 91%, and loss on ignition is 1.8%.
Preferably, described thickening material includes increases aggregate adhesion agent, ether of cellulose, air entrapment agent, suppression aggregate stone flour absorption water reducer inhibitor, and the water-reducing rate of this water reducer volume when 1.5%C is 18%.
Concrete grade prepared by the present invention is C30.
Beneficial effect of the present invention is:
(1) Machine-made Sand adopting aggregate chips, CHARACTERISTICS OF TAILINGS SAND to substitute to need grinding stone to produce by grating and river sand, aggregate chips is the remaining tailing of processing stone, and CHARACTERISTICS OF TAILINGS SAND is the waste after ore dressing is processed; Draw materials convenient and cheap, the present invention not only realizes the Appropriate application of resource, reduces discarded aggregate chips and CHARACTERISTICS OF TAILINGS SAND environmental pollution, and reduces concrete production cost.
(2) water reducer adopted not only has the composition of dispersion mortar gel material, also there is the composition keeping concrete plasticity, ensure that the concrete strength that the present invention adopts aggregate chips, CHARACTERISTICS OF TAILINGS SAND and stone and produces, namely water consumption is reduced, concrete water retention, adhesive aggregation degree can be ensured again, extend the slump-loss time, ensure concrete use continuity.
(3) the present invention's Machine-made Sand of adopting aggregate chips, CHARACTERISTICS OF TAILINGS SAND to replace needing grinding stone to produce by grating and river sand, not only there is certain economy and environment benefit, simultaneously by reasonably optimizing mix proportion, while reduction concrete production cost, ensure the performance index of product, there are good market outlook, meet the Mode of Circular that country promotes.
Embodiment
Below by specific embodiment, the invention will be further described:
Embodiment 1
The concrete of the employing aggregate chips iron tailings sand of the present embodiment and polycarboxylate water-reducer preparation, counts by weight, comprises following component: cement 249 parts, 55 parts, flyash, breeze 74 parts; CHARACTERISTICS OF TAILINGS SAND 200 parts, aggregate chips 820 parts, 800 parts, stone, 175 parts, water, polycarboxylate water-reducer 4.8 parts; Sand coarse aggregate ratio is 0.56;
The particle diameter of aggregate chips is 0.1-2.5mm, and fineness modulus is 3.1, and silt content is 5%; The particle diameter of CHARACTERISTICS OF TAILINGS SAND is 0.1-5mm, and fineness modulus is 1.7; The particle diameter of stone is 5-31.5mm continuous grading, silt content 2.4%;
Polycarboxylate water-reducer contains the thickening material of 0.5%, and thickening material includes increases aggregate adhesion agent, ether of cellulose, air entrapment agent, suppression aggregate stone flour absorption water reducer inhibitor, and the water-reducing rate of this water reducer volume when 1.5%C is 18%.
Cement is blue or green alkali 42.5 ordinary Portland cement, and its 3 days intensity are 23.1MPa, and 28 days intensity is 51.6MPa; Breeze is S95 level breeze, its 7 days specific activitys 86%, 28 days specific activitys 98%, and specific surface area is 435mm2/g, water demand ratio 98%; Flyash is power station II level flyash, and fineness is 8.6, water demand ratio 97%, and within 28 days, activity index is 91%, and loss on ignition is 1.8%.
Embodiment 2
The concrete of the employing aggregate chips iron tailings sand of the present embodiment and polycarboxylate water-reducer preparation, counts by weight, comprises following component: cement 262 parts, 45 parts, flyash, breeze 71 parts; CHARACTERISTICS OF TAILINGS SAND 210 parts, aggregate chips 830 parts, 780 parts, stone, 165 parts, water, polycarboxylate water-reducer 4.9 parts; Sand coarse aggregate ratio is 0.57; Other are with embodiment 1.
Embodiment 3
The concrete of the employing aggregate chips iron tailings sand of the present embodiment and polycarboxylate water-reducer preparation, counts by weight, comprises following component: cement 239 parts, 55 parts, flyash, breeze 84 parts; CHARACTERISTICS OF TAILINGS SAND 190 parts, aggregate chips 800 parts, 820 parts, stone, 163 parts, water, polycarboxylate water-reducer 4.8 parts; Sand coarse aggregate ratio is 0.55; Other are with embodiment 1.
The concrete performance table that table 1 is prepared for the embodiment of the present invention
Table 1
Claims (5)
1. one kind adopts the concrete of aggregate chips iron tailings sand and polycarboxylate water-reducer preparation, count by weight, comprise following component: cement 239-262 part, flyash 45-55 part, breeze 71-84 part, CHARACTERISTICS OF TAILINGS SAND 190-210 part, aggregate chips 800-830 part, stone 780-820 part, water 163-175 part, polycarboxylate water-reducer 4.8-4.9 part, wherein sand coarse aggregate ratio is 0.55-0.57;
The fineness modulus of described aggregate chips is 3.1, and silt content is 5%; The fineness modulus of described CHARACTERISTICS OF TAILINGS SAND is 1.7; The particle diameter of described stone is 5-31.5mm continuous grading, and silt content is less than or equal to 2.4%;
Described polycarboxylate water-reducer contains the thickening material of 0.5%.
2. the concrete of employing aggregate chips iron tailings sand according to claim 1 and polycarboxylate water-reducer preparation, is characterized in that: described cement is blue or green alkali 42.5 ordinary Portland cement.
3. the concrete of employing aggregate chips iron tailings sand according to claim 1 and polycarboxylate water-reducer preparation, is characterized in that: described breeze is S95 level breeze, and specific surface area is 435mm2/g, water demand ratio 98%.
4. the concrete of employing aggregate chips iron tailings sand according to claim 1 and polycarboxylate water-reducer preparation, is characterized in that: described flyash is power station II level flyash, and fineness is 8.6, water demand ratio 97%, and loss on ignition is 1.8%.
5. the concrete of the employing aggregate chips iron tailings sand according to any one of claim 1-4 and polycarboxylate water-reducer preparation, it is characterized in that: described thickening material includes increases aggregate adhesion agent, ether of cellulose, air entrapment agent, suppression aggregate stone flour absorption water reducer inhibitor, and the water-reducing rate of this water reducer volume when 1.5%C is 18%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511019221.4A CN105481319A (en) | 2015-12-29 | 2015-12-29 | Concrete prepared from aggregate chips, iron tailing sand and polycarboxylic acid water reducing agent |
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| CN201511019221.4A CN105481319A (en) | 2015-12-29 | 2015-12-29 | Concrete prepared from aggregate chips, iron tailing sand and polycarboxylic acid water reducing agent |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105859207A (en) * | 2016-05-26 | 2016-08-17 | 武汉源锦商品混凝土有限公司 | C30 tailing sand anti-washout concrete and preparing method thereof |
| CN106013725A (en) * | 2016-05-13 | 2016-10-12 | 中建三局集团有限公司 | Preparation method of novel cement base terrazzo floor |
| CN106186980A (en) * | 2016-07-17 | 2016-12-07 | 临汾市华基新型建材有限公司 | Utilize the concrete that tower mountain mine tailing produces |
| CN106336166A (en) * | 2016-08-23 | 2017-01-18 | 中国电建集团核电工程公司 | Method for increasing fluidity of concrete by using stone chip and machine-made sand compound addition technology |
| CN107117887A (en) * | 2017-06-08 | 2017-09-01 | 上海百理新材料科技股份有限公司 | A kind of method that use Machine-made Sand prepares fiber pump concrete |
| CN108396858A (en) * | 2018-03-19 | 2018-08-14 | 浙江红欣园林艺术有限公司 | A kind of concrete construction method of combination BIM |
| CN110627446A (en) * | 2019-10-18 | 2019-12-31 | 保利长大工程有限公司 | Economical and environment-friendly tunnel shotcrete and construction process |
| CN111825396A (en) * | 2020-07-31 | 2020-10-27 | 亚泰集团长春建材有限公司 | Concrete based on limestone tailings as raw material and preparation method thereof |
| CN112479644A (en) * | 2020-12-18 | 2021-03-12 | 陕西天皓万业混凝土工程有限责任公司 | Zirconium-titanium tailing concrete and preparation method thereof |
| CN113480262A (en) * | 2021-07-24 | 2021-10-08 | 陕西恒盛混凝土有限公司 | Machine-made sand concrete containing iron tailing sand and preparation method thereof |
| CN114804918A (en) * | 2022-06-09 | 2022-07-29 | 中建三局集团有限公司 | Ceramsite concrete and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013725A (en) * | 2016-05-13 | 2016-10-12 | 中建三局集团有限公司 | Preparation method of novel cement base terrazzo floor |
| CN105859207A (en) * | 2016-05-26 | 2016-08-17 | 武汉源锦商品混凝土有限公司 | C30 tailing sand anti-washout concrete and preparing method thereof |
| CN106186980A (en) * | 2016-07-17 | 2016-12-07 | 临汾市华基新型建材有限公司 | Utilize the concrete that tower mountain mine tailing produces |
| CN106336166A (en) * | 2016-08-23 | 2017-01-18 | 中国电建集团核电工程公司 | Method for increasing fluidity of concrete by using stone chip and machine-made sand compound addition technology |
| CN107117887A (en) * | 2017-06-08 | 2017-09-01 | 上海百理新材料科技股份有限公司 | A kind of method that use Machine-made Sand prepares fiber pump concrete |
| CN108396858A (en) * | 2018-03-19 | 2018-08-14 | 浙江红欣园林艺术有限公司 | A kind of concrete construction method of combination BIM |
| CN110627446A (en) * | 2019-10-18 | 2019-12-31 | 保利长大工程有限公司 | Economical and environment-friendly tunnel shotcrete and construction process |
| CN111825396A (en) * | 2020-07-31 | 2020-10-27 | 亚泰集团长春建材有限公司 | Concrete based on limestone tailings as raw material and preparation method thereof |
| CN112479644A (en) * | 2020-12-18 | 2021-03-12 | 陕西天皓万业混凝土工程有限责任公司 | Zirconium-titanium tailing concrete and preparation method thereof |
| CN113480262A (en) * | 2021-07-24 | 2021-10-08 | 陕西恒盛混凝土有限公司 | Machine-made sand concrete containing iron tailing sand and preparation method thereof |
| CN114804918A (en) * | 2022-06-09 | 2022-07-29 | 中建三局集团有限公司 | Ceramsite concrete and preparation method thereof |
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