CN111747719A - PRM concrete reinforcing agent - Google Patents

PRM concrete reinforcing agent Download PDF

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Publication number
CN111747719A
CN111747719A CN202010669945.8A CN202010669945A CN111747719A CN 111747719 A CN111747719 A CN 111747719A CN 202010669945 A CN202010669945 A CN 202010669945A CN 111747719 A CN111747719 A CN 111747719A
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CN
China
Prior art keywords
gypsum
red mud
fly ash
mineral powder
prm
Prior art date
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Pending
Application number
CN202010669945.8A
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Chinese (zh)
Inventor
杨晓滨
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Shanghai Baiaoheng Renewable Resources Co ltd
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Shanghai Baiaoheng Renewable Resources Co ltd
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Priority to CN202010669945.8A priority Critical patent/CN111747719A/en
Publication of CN111747719A publication Critical patent/CN111747719A/en
Pending legal-status Critical Current

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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
    • C04B28/14—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 calcium sulfate cements
    • 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
    • C04B28/14—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 calcium sulfate cements
    • C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
    • C04B28/144—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention relates to the technical field of comprehensive utilization of red mud, gypsum and fly ash, in particular to a PRM concrete reinforcing agent. The red mud, gypsum, fly ash and mineral powder are adopted for preparation; the weight percentages of various raw materials are as follows: 5-30% of red mud, 5-30% of gypsum, 10-50% of fly ash and 10-50% of mineral powder; the preparation method comprises the following steps: the red mud, the gypsum, the fly ash and the mineral powder are filtered to remove particles with the diameter of more than 0.5cm, and are dried and fully and uniformly mixed. The invention has the advantages that: the strength is high, the price is low, a large amount of solid wastes such as red mud produced by alumina enterprises, desulfurized gypsum produced by thermal power plants, white gypsum, red gypsum and the like produced by titanium dioxide enterprises are utilized, waste is changed into wealth through comprehensive utilization, and the problem of environmental protection and solid waste treatment faced by the industries is solved.

Description

PRM concrete reinforcing agent
Technical Field
The invention relates to the technical field of comprehensive utilization of red mud, gypsum and fly ash, in particular to a PRM concrete reinforcing agent.
Background
The concrete is artificial stone which is prepared by taking cement as a main cementing material, adding water, sand, stones and chemical additives and mineral admixtures if necessary, mixing the materials according to a proper proportion, uniformly stirring, densely molding, curing and hardening. Concrete is mainly divided into two stages and states: plastic state before setting and hardening, namely fresh concrete or concrete mixture; hardened, i.e. hardened concrete or concrete. The concrete strength grade is divided into a cubic compressive strength standard value, and the Chinese common concrete strength grade is divided into 14 grades: c15, C20, C25, C30, C35, C40, C45, C50, C55, C60, C65, C70, C75 and C80.
Adopt traditional technology production concrete, the quantity of cement is great, and the cost is higher, and along with the management and control of country to the environmental protection is more and more strict, cement manufacture enterprise is at continuous compression and control productivity for the cost and the cost that cement used are more and more high, and is corresponding, and the manufacturing cost of concrete is also more and more high, and this problem is urgently waited to solve.
Disclosure of Invention
The invention aims to provide a PRM concrete reinforcing agent to solve the technical problems.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a PRM concrete reinforcing agent is characterized in that: the red mud, gypsum, fly ash and mineral powder are adopted for preparation; the weight percentages of various raw materials are as follows: 5-30% of red mud, 5-30% of gypsum, 10-50% of fly ash and 10-50% of mineral powder; the preparation method comprises the following steps: the red mud, the gypsum, the fly ash and the mineral powder are filtered to remove particles with the diameter of more than 0.5cm, and are dried and fully and uniformly mixed.
Further, the gypsum is red gypsum, white gypsum or desulfurized gypsum.
Has the advantages that: compared with the prior art, the PRM concrete reinforcing agent has the advantages that:
1. the strength is high: in the concrete gelling reaction process, the red mud and the gypsum can promote the generation of ettringite to fill pores, so that the slurry is compact and the strength development is facilitated; meanwhile, the red mud and the fly ash can promote geopolymerization reaction to generate geopolymer, the geopolymer has the excellent characteristics of high strength, high-temperature durability and the like, and the compressive strength of the produced concrete material in 28 days can reach the standard of the grade C35 and above;
2. the price is low: the price of the PRM concrete reinforcing agent is 150 yuan/ton lower than that of common 425 cement;
3. and (3) environmental protection: a large amount of solid wastes such as red mud generated by alumina enterprises, desulfurized gypsum generated by thermal power plants, white gypsum, red gypsum and the like generated by titanium dioxide enterprises are utilized, and the problem of environmental protection and solid waste treatment in the industries is solved by changing waste into valuable through comprehensive utilization.
Detailed Description
The invention is further described with reference to specific examples.
Example 1:
the PRM concrete reinforcing agent is prepared from 100 kg of red mud, 300 kg of red gypsum, 100 kg of fly ash and 500 kg of mineral powder; the preparation method comprises the following steps: the red mud, the gypsum, the fly ash and the mineral powder are filtered to remove particles with the diameter of more than 0.5cm, and the particles are dried and fully and uniformly mixed.
Example 2:
the PRM concrete reinforcing agent is prepared from 300 kg of red mud, 100 kg of white gypsum, 500 kg of fly ash and 100 kg of mineral powder; the preparation method comprises the following steps: the red mud, the gypsum, the fly ash and the mineral powder are filtered to remove particles with the diameter of more than 0.5cm, and the particles are dried and fully and uniformly mixed.
Example 3:
the PRM concrete reinforcing agent is prepared from 200 kg of red mud, 200 kg of desulfurized gypsum, 400 kg of fly ash and 400 kg of mineral powder; the preparation method comprises the following steps: the red mud, the gypsum, the fly ash and the mineral powder are filtered to remove particles with the diameter of more than 0.5cm, and the particles are dried and fully and uniformly mixed.
In the concrete stirring production, the chemical reaction product and the strength enhancing mechanism after the PRM concrete reinforcing agent is added are as follows:
1. red mud (containing NaOH) + Gypsum (containing 2H 2O. CaSO4) → ettringite (calcium aluminum → calcium aluminum gypsum)
In the concrete gelling reaction process, the red mud and the gypsum can promote the generation of ettringite (calcium aluminum gypsum) to fill pores, so that the slurry is compact and the strength development is facilitated.
2. Red mud (containing NaOH) + flyash (amorphous SiO)2→ amorphous SiO2，Al2O3) + powdered ore (granulated blast furnace slag) → geopolymer
Meanwhile, the red mud, the fly ash and the mineral powder can promote geopolymerization to generate geopolymer, and the geopolymer has the excellent characteristics of high strength, high-temperature durability and the like.
3. Red mud (containing NaOH) + mineral powder (amorphous NCaO → CaO)
Data for concrete produced using the PRM concrete enhancer of example 3 compared to concrete produced by conventional production techniques are shown in the following table:
Figure BDA0002581898860000031
therefore, the invention application of the PRM concrete reinforcing agent not only contributes to reducing the cost and improving the quality of the concrete industry, but also has more prominent contribution: a large amount of solid wastes such as red mud generated by alumina enterprises, desulfurized gypsum generated by thermal power plants, white gypsum and red gypsum generated by titanium dioxide enterprises and the like are utilized, and the problem of environmental protection and solid waste treatment in the industries is solved by changing waste into valuable through comprehensive utilization.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (2)

1. A PRM concrete reinforcing agent is characterized in that: the red mud, gypsum, fly ash and mineral powder are adopted for preparation; the weight percentages of various raw materials are as follows: 5-30% of red mud, 5-30% of gypsum, 10-50% of fly ash and 10-50% of mineral powder; the preparation method comprises the following steps: the red mud, the gypsum, the fly ash and the mineral powder are filtered to remove particles with the diameter of more than 0.5cm, and are dried and fully and uniformly mixed.
2. The PRM concrete enhancer of claim 1, wherein: the gypsum is red gypsum, white gypsum or desulfurized gypsum.
CN202010669945.8A 2020-07-13 2020-07-13 PRM concrete reinforcing agent Pending CN111747719A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010669945.8A CN111747719A (en) 2020-07-13 2020-07-13 PRM concrete reinforcing agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010669945.8A CN111747719A (en) 2020-07-13 2020-07-13 PRM concrete reinforcing agent

Publications (1)

Publication Number Publication Date
CN111747719A true CN111747719A (en) 2020-10-09

Family

ID=72710950

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010669945.8A Pending CN111747719A (en) 2020-07-13 2020-07-13 PRM concrete reinforcing agent

Country Status (1)

Country Link
CN (1) CN111747719A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113603383A (en) * 2021-09-07 2021-11-05 上海百奥恒再生资源有限公司 PRM concrete reinforcing agent
CN116063019A (en) * 2022-12-12 2023-05-05 上海百奥恒新材料有限公司 Red mud-based composite admixture and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4999781A (en) * 1973-01-31 1974-09-20
CN1033789A (en) * 1987-12-25 1989-07-12 安宇 A kind of inorganic cement reinforcer
CN101993208A (en) * 2010-10-26 2011-03-30 阳泉市华通建筑材料研究所 Cement concrete intensifier produced by using red mud industrial waste
CN109111902A (en) * 2018-08-09 2019-01-01 李志平 A kind of oil well second interface reinforcing agent and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4999781A (en) * 1973-01-31 1974-09-20
CN1033789A (en) * 1987-12-25 1989-07-12 安宇 A kind of inorganic cement reinforcer
CN101993208A (en) * 2010-10-26 2011-03-30 阳泉市华通建筑材料研究所 Cement concrete intensifier produced by using red mud industrial waste
CN109111902A (en) * 2018-08-09 2019-01-01 李志平 A kind of oil well second interface reinforcing agent and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113603383A (en) * 2021-09-07 2021-11-05 上海百奥恒再生资源有限公司 PRM concrete reinforcing agent
CN116063019A (en) * 2022-12-12 2023-05-05 上海百奥恒新材料有限公司 Red mud-based composite admixture and preparation method thereof
CN116063019B (en) * 2022-12-12 2024-01-30 上海百奥恒新材料有限公司 Red mud-based composite admixture and preparation method thereof

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Application publication date: 20201009