CN109553320B - Nickel slag cement expanding agent and silicate cement doped with same - Google Patents

Nickel slag cement expanding agent and silicate cement doped with same Download PDF

Info

Publication number
CN109553320B
CN109553320B CN201811520583.5A CN201811520583A CN109553320B CN 109553320 B CN109553320 B CN 109553320B CN 201811520583 A CN201811520583 A CN 201811520583A CN 109553320 B CN109553320 B CN 109553320B
Authority
CN
China
Prior art keywords
cement
nickel slag
expanding agent
doped
nickel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201811520583.5A
Other languages
Chinese (zh)
Other versions
CN109553320A (en
Inventor
仓定龙
侯贵华
陈思佳
姚恒山
嵇蔚冰
李晨钟
刘俊
王军卫
姚庚
王学为
高峰
杨华筛
成海翔
朱育金
陈龙
顾威桥
朱珠
陈爱
仓东婷
仓东芝
卞连玉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yancheng Guotai Concrete Co ltd
Original Assignee
Yancheng Guotai Concrete Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yancheng Guotai Concrete Co ltd filed Critical Yancheng Guotai Concrete Co ltd
Priority to CN201811520583.5A priority Critical patent/CN109553320B/en
Publication of CN109553320A publication Critical patent/CN109553320A/en
Application granted granted Critical
Publication of CN109553320B publication Critical patent/CN109553320B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/0006—Waste inorganic materials
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/14—Cements containing slag
    • C04B7/147—Metallurgical slag
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

Abstract

The invention discloses a nickel slag cement expanding agent and silicate cement doped with the same, wherein the nickel slag cement expanding agent is prepared by the following method: firstly, mixing glycerol, strontium nitrate and water in a mass ratio of 1:1: 60-100 to prepare an extraction solution, then soaking nickel slag powder in the extraction solution, and filtering to remove the solution to obtain the nickel slag cement expanding agent. The main chemical component of the silicon-rich magnesium-nickel slag is SiO2And MgO is used as a source of MgO in the expanding agent, and an extraction solution is prepared to extract the free MgO part in the nickel slag, so that the expansion of the MgO is controlled. In the silicate cement doped with the nickel slag cement expanding agent, the doping amount of the nickel slag cement expanding agent is 5-15%, and after the nickel slag cement expanding agent is doped, the mechanical strength of the cement can be improved to a certain extent, the impermeability of the cement is obviously improved, and the contractibility of the cement is reduced.

Description

Nickel slag cement expanding agent and silicate cement doped with same
Technical Field
The invention relates to a cement expanding agent and silicate cement, in particular to a nickel slag cement expanding agent and silicate cement doped with the same, belonging to the field of building materials.
Background
The nickel slag is industrial waste slag discharged in the process of smelting metal nickel, is mainly slag obtained by water quenching and quenching or air cooling nickel-iron slag in a high-temperature molten state, and has wide source and high yield. The Yangtian is suitable for reinforcing the strength of concrete by replacing partial cement and sand with nickel slag of different grain sizes in the concrete preparation process (Yangtian is suitable for wear-resistant concrete doped with nickel slag, CN 104478368B [ P ]. 2016).
The common cement has shrinkage, and the addition of the expanding agent can improve the defect and improve the performances of the cement such as impermeability and the like. The principle of the common expanding agent is that CaO or MgO changes into Ca (OH) when meeting water2、Mg(OH)2The volume expansion is generated in the process. The common expanding agent is CaO expanding agent prepared by calcining lime or dihydrate gypsum. Zhang George, etc. uses phase-change material as wrapping layer to wrap core layer of CaO expansion agent so as to effectively compensate concrete temp. shrinkage [ Naja, Wangrui, Zhang George, etc.. A modified calcium oxide expansion agent for cement concrete and its preparation method, CN104671695A [ P].2015]. But this method is costly. The main chemical component of the silicon-rich magnesium-nickel slag is SiO2And MgO, which can reduce the cost and promote the sustainable development of the environment if it is used as a mineral source of MgO.
However, the problem that the silicon-magnesium-nickel-rich slag contains free MgO, which can cause uncontrollable expansion of cement concrete in the later period, thereby causing the damage of concrete structure, limits the application of the nickel slag as a cement expanding agent.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problem that the nickel slag cannot be used as a cement expanding agent because the nickel slag contains free MgO, the invention provides the nickel slag cement expanding agent, and the expansion characteristic of the free MgO is controlled by processing the nickel slag, so that the nickel slag can be used as the cement expanding agent; meanwhile, the invention also provides silicate cement doped with the nickel slag cement expanding agent.
The technical scheme is as follows: the nickel slag cement expanding agent is prepared by the following method: firstly, mixing glycerol, strontium nitrate and water in a mass ratio of 1:1: 60-100 to prepare an extraction solution, then soaking nickel slag powder in the extraction solution, and filtering to remove the solution to obtain the nickel slag cement expanding agent.
In the cement expansive agent containing nickel slag, nickel slagThe powder is preferably silicon-rich magnesium-nickel slag powder; SiO in Si-rich Mg-Ni slag powder2The mass fraction of the component (A) is more than 50 percent, the mass fraction of MgO is more than 20 percent, and the sum of the mass fractions of the two is more than 70 percent.
Preferably, the mass ratio of the nickel slag powder to the extraction solution is not less than 4: 1. Wherein the specific surface area of the nickel slag powder is 500-800 m2/kg, preferably 550. + -.10 m2/kg。
Further, the soaking time of the nickel slag powder in the extraction solution is 10-30 h.
The silicate cement is doped with the nickel slag cement expanding agent. Preferably, the mixing amount of the nickel slag cement expanding agent is 5-15% of the mass of the silicate cement.
The invention principle is as follows: the invention utilizes the main component MgO in the silicon-rich magnesium-nickel slag as the source of the expanding agent, and prepares the extraction solution to extract out part of MgO in the nickel slag, and destroys the structures of the residual MgO and minerals thereof, improves the chemical reaction activity thereof, and controls the expansion of the MgO. After the cement is added, the mechanical strength of the cement can be improved to a certain extent, the impermeability of the cement is obviously improved, and the shrinkage of the cement is reduced.
Has the advantages that: compared with the prior art, the invention has the following advantages: (1) in the invention, the MgO in the nickel slag is partially extracted from a mixed solution consisting of glycerol, strontium nitrate and water, the structures of the residual MgO and minerals thereof are damaged, the chemical reaction activity of the residual MgO is improved, the expansion of the MgO is controlled, and the expansion speeds (chemical reactions) of the MgO are different along with the difference of extraction time; (2) after the nickel slag cement expanding agent is added into cement, the mechanical strength of the cement can be improved to a certain extent, the impermeability of the cement is obviously improved, and the shrinkage of the cement is reduced; (3) the nickel slag cement expanding agent has the advantages of simple preparation process and low cost.
Drawings
FIG. 1 is a flow chart of the preparation process of the silicate cement doped with the nickel slag cement expansive agent.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
Referring to fig. 1, the nickel slag cement expanding agent of the present invention is prepared by the following method: firstly, mixing glycerol, strontium nitrate and water in a mass ratio of 1:1: 60-100 to prepare an extraction solution, then soaking nickel slag powder in the extraction solution, and filtering to remove the solution to obtain the nickel slag cement expanding agent.
Wherein the nickel slag powder can be silicon-rich magnesium-nickel slag powder, SiO in the silicon-rich magnesium-nickel slag powder2The mass fraction of the component (A) is more than 50%, the mass fraction of MgO is more than 20%, and the sum of the mass fraction of MgO and the mass fraction of MgO is more than 70%. The specific surface area of the nickel slag powder is 500-800 m2/kg。
And during soaking, the mass ratio of the nickel slag powder to the extraction solution is not less than 4: 1. The soaking time is 10-30 h.
The nickel slag cement expanding agent is doped into silicate cement, so that the impermeability and the mechanical strength of the obtained silicate cement are effectively improved, and the contractibility is reduced. Wherein the mass of the nickel slag cement expanding agent is 5-15% of that of the silicate cement.
The technical means of the present invention will be described in detail in examples 1 to 8. The nickel slag cement expanding agent is prepared firstly, then the nickel slag cement expanding agent is doped into portland cement to prepare a cement expanding agent test block, and the performance of the prepared cement expanding agent test block is tested.
Wherein the preparation process of the nickel slag cement expanding agent comprises the following steps: mixing glycerol, strontium nitrate and water according to a mass ratio, and stirring for 30 minutes to obtain an extraction solution. Grinding the nickel slag to 500-800 m of specific surface area2And/kg, soaking the nickel slag powder in the extraction solution for 10-30 hours at a mass ratio of the steel slag to the solution of 8:2, and filtering to remove the solution to obtain the nickel slag cement expanding agent. In the embodiments 1 to 8, silicon-magnesium-nickel-rich slag is selected as a raw material to prepare the nickel slag cement expanding agent, wherein the silicon-magnesium-nickel-rich slag powder comprises the following components in percentage by weight:
TABLE 1 composition of nickel slag (wt%)
Figure BDA0001903129690000031
Example 1
The experimental conditions were as follows:
Figure BDA0001903129690000032
the preparation method of the Portland cement doped with the nickel slag cement expanding agent comprises the following steps: the nickel slag cement expanding agent is prepared according to the experimental conditions, and the P & II 42.5 Portland cement is doped, wherein the doping amount is 5%. Adding water and mixing, wherein the water-to-glue ratio is 0.44. Pouring the cement paste into a mold with 4cm by 16cm, carrying out vibration molding, and measuring the compressive strength according to GB175-2017 after standard curing for 28 days. Pouring cement paste into a mold with 4cm x 14cm, vibrating and molding, curing in water for 7 days, curing in air for 21 days, and testing the limited expansion rate according to GB/T23439-. The compressive strength and the limited expansion rate are shown in the attached table 2.
Example 2
The experimental conditions were as follows:
Figure BDA0001903129690000033
Figure BDA0001903129690000041
the preparation method of the Portland cement doped with the nickel slag cement expanding agent comprises the following steps: the nickel slag cement expanding agent is prepared according to the experimental conditions, and the P & II 42.5 Portland cement is doped, wherein the doping amount is 5%. Adding water and mixing, wherein the water-to-glue ratio is 0.44. Pouring the cement paste into a mold with 4cm by 16cm, carrying out vibration molding, and measuring the compressive strength according to GB175-2017 after standard curing for 28 days. Pouring cement paste into a mold with 4cm x 14cm, vibrating and molding, curing in water for 7 days, curing in air for 21 days, and testing the limited expansion rate according to GB/T23439-. The compressive strength and the limited expansion rate are shown in the attached table 2.
Example 3
The experimental conditions were as follows:
Figure BDA0001903129690000042
the preparation method of the Portland cement doped with the nickel slag cement expanding agent comprises the following steps: the nickel slag cement expanding agent is prepared according to the experimental conditions, and the P & II 42.5 Portland cement is doped, wherein the doping amount is 5%. Adding water and mixing, wherein the water-to-glue ratio is 0.44. Pouring the cement paste into a mold with 4cm by 16cm, carrying out vibration molding, and measuring the compressive strength according to GB175-2017 after standard curing for 28 days. Pouring cement paste into a mold with 4cm x 14cm, vibrating and molding, curing in water for 7 days, curing in air for 21 days, and testing the limited expansion rate according to GB/T23439-. The compressive strength and the limited expansion rate are shown in the attached table 2.
Example 4
The experimental conditions were as follows:
Figure BDA0001903129690000043
the preparation method of the Portland cement doped with the nickel slag cement expanding agent comprises the following steps: the steel slag cement expanding agent is prepared according to the experimental conditions, and P.II 42.5 Portland cement is doped, wherein the doping amount is 7%. Adding water and mixing, wherein the water-to-glue ratio is 0.44. Pouring the cement paste into a mold with 4cm by 16cm, carrying out vibration molding, and measuring the compressive strength according to GB175-2017 after standard curing for 28 days. Pouring cement paste into a mold with 4cm x 14cm, vibrating and molding, curing in water for 7 days, curing in air for 21 days, and testing the limited expansion rate according to GB/T23439-. The compressive strength and the limited expansion rate are shown in the attached table 2.
Example 5
The experimental conditions were as follows:
Figure BDA0001903129690000051
the preparation method of the Portland cement doped with the nickel slag cement expanding agent comprises the following steps: the steel slag cement expanding agent is prepared according to the experimental conditions, and P.II 42.5 Portland cement is doped, wherein the doping amount is 7%. Adding water and mixing, wherein the water-to-glue ratio is 0.44. Pouring the cement paste into a mold with 4cm by 16cm, carrying out vibration molding, and measuring the compressive strength according to GB175-2017 after standard curing for 28 days. Pouring cement paste into a mold with 4cm x 14cm, vibrating and molding, curing in water for 7 days, curing in air for 21 days, and testing the limited expansion rate according to GB/T23439-. The compressive strength and the limited expansion rate are shown in the attached table 2.
Example 6
The experimental conditions were as follows:
Figure BDA0001903129690000052
the preparation method of the Portland cement doped with the nickel slag cement expanding agent comprises the following steps: the steel slag cement expanding agent is prepared according to the experimental conditions, and the P & II 42.5 Portland cement is doped, wherein the doping amount is 10%. Adding water and mixing, wherein the water-to-glue ratio is 0.44. Pouring the cement paste into a mold with 4cm by 16cm, carrying out vibration molding, and measuring the compressive strength according to GB175-2017 after standard curing for 28 days. Pouring cement paste into a mold with 4cm x 14cm, vibrating and molding, curing in water for 7 days, curing in air for 21 days, and testing the limited expansion rate according to GB/T23439-. The compressive strength and the limited expansion rate are shown in the attached table 2.
Example 7
The experimental conditions were as follows:
Figure BDA0001903129690000061
the preparation method of the Portland cement doped with the nickel slag cement expanding agent comprises the following steps: the steel slag cement expanding agent is prepared according to the experimental conditions, and the P & II 42.5 Portland cement is doped, wherein the doping amount is 10%. Adding water and mixing, wherein the water-to-glue ratio is 0.44. Pouring the cement paste into a mold with 4cm by 16cm, carrying out vibration molding, and measuring the compressive strength according to GB175-2017 after standard curing for 28 days. Pouring cement paste into a mold with 4cm x 14cm, vibrating and molding, curing in water for 7 days, curing in air for 21 days, and testing the limited expansion rate according to GB/T23439-. The compressive strength and the limited expansion rate are shown in the attached table 2.
Example 8
The experimental conditions were as follows:
Figure BDA0001903129690000062
the preparation method of the Portland cement doped with the nickel slag cement expanding agent comprises the following steps: the steel slag cement expanding agent is prepared according to the experimental conditions, and the P & II 42.5 Portland cement is doped, wherein the doping amount is 15%. Adding water and mixing, wherein the water-to-glue ratio is 0.44. Pouring the cement paste into a mold with 4cm by 16cm, carrying out vibration molding, and measuring the compressive strength according to GB175-2017 after standard curing for 28 days. Pouring cement paste into a mold with 4cm x 14cm, vibrating and molding, curing in water for 7 days, curing in air for 21 days, and testing the limited expansion rate according to GB/T23439-. The compressive strength and the limited expansion rate are shown in the attached table 2.
Comparative example
P.II 42.5 Portland cement is mixed with water, and the water-cement ratio is 0.44. Pouring the cement paste into a mold with 4cm by 16cm, carrying out vibration molding, and measuring the compressive strength according to GB175-2017 after standard curing for 28 days. Pouring the cement paste into a mold with 4cm x 14cm, vibrating and molding, curing in water for 7 days, curing in air for 21 days, and testing the limited expansion rate according to GB/T23439-2017. The compressive strength and the limited expansion rate are shown in the attached table 2.
Table 2 Performance characterization of Cement expansive agent test pieces prepared in examples 1-8 and comparative examples
Figure BDA0001903129690000071

Claims (4)

1. The nickel slag cement expanding agent is characterized by being prepared by the following method: firstly, mixing glycerol, strontium nitrate and water in a mass ratio of 1:1: 60-100 to prepare an extraction solution, then soaking nickel slag powder in the extraction solution, and filtering to remove the solutionObtaining the nickel slag cement expanding agent, wherein the nickel slag powder is silicon-rich magnesium-nickel slag powder, and SiO2 The mass fraction of the nickel slag powder is more than 50%, the mass fraction of MgO is more than 20%, the mass ratio of the nickel slag powder to the extraction solution is not less than 4:1, and the soaking time of the nickel slag powder in the extraction solution is 10-30 h.
2. The nickel slag cement expanding agent as claimed in claim 1, wherein the specific surface area of the nickel slag powder is 500-800 m2/kg。
3. A silicate cement doped with the nickel slag cement expander of claim 1.
4. The silicate cement according to claim 3, wherein the amount of the nickel slag cement expansion agent is 5-15% by mass of the silicate cement.
CN201811520583.5A 2018-12-12 2018-12-12 Nickel slag cement expanding agent and silicate cement doped with same Active CN109553320B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811520583.5A CN109553320B (en) 2018-12-12 2018-12-12 Nickel slag cement expanding agent and silicate cement doped with same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811520583.5A CN109553320B (en) 2018-12-12 2018-12-12 Nickel slag cement expanding agent and silicate cement doped with same

Publications (2)

Publication Number Publication Date
CN109553320A CN109553320A (en) 2019-04-02
CN109553320B true CN109553320B (en) 2021-07-27

Family

ID=65869675

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811520583.5A Active CN109553320B (en) 2018-12-12 2018-12-12 Nickel slag cement expanding agent and silicate cement doped with same

Country Status (1)

Country Link
CN (1) CN109553320B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115629193B (en) * 2022-12-22 2023-03-31 西南交通大学 Method for determining instability process of base-cover type landslide

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6433042A (en) * 1987-07-27 1989-02-02 Ask Corp Asbestos-free millboard
CN1603272A (en) * 2004-09-27 2005-04-06 武汉理工大学 Cement and concrete expander prepared by using multiple industrial residues
CN104496209A (en) * 2014-12-10 2015-04-08 南京梅山冶金发展有限公司 Steel slag for building material and treatment process of steel slag
CN104529319A (en) * 2014-12-05 2015-04-22 南京工业大学 Low-heat micro-expansion composite cement and preparation method thereof
CN107162480A (en) * 2017-07-12 2017-09-15 合肥雅克丽新型建材有限公司 A kind of preparation method of modified concrete swelling agent

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6433042A (en) * 1987-07-27 1989-02-02 Ask Corp Asbestos-free millboard
CN1603272A (en) * 2004-09-27 2005-04-06 武汉理工大学 Cement and concrete expander prepared by using multiple industrial residues
CN104529319A (en) * 2014-12-05 2015-04-22 南京工业大学 Low-heat micro-expansion composite cement and preparation method thereof
CN104496209A (en) * 2014-12-10 2015-04-08 南京梅山冶金发展有限公司 Steel slag for building material and treatment process of steel slag
CN107162480A (en) * 2017-07-12 2017-09-15 合肥雅克丽新型建材有限公司 A kind of preparation method of modified concrete swelling agent

Also Published As

Publication number Publication date
CN109553320A (en) 2019-04-02

Similar Documents

Publication Publication Date Title
Mallikarjuna Rao et al. Final setting time and compressive strength of fly ash and GGBS-based geopolymer paste and mortar
Huang et al. Effect of recycled fine aggregates on alkali-activated slag concrete properties
EP2514727B1 (en) An alkali activated limestone concrete composition and use of composition in concrete casting
Jiao et al. Effect of dosage of alkaline activator on the properties of alkali-activated slag pastes
CN110642582A (en) Geopolymer-based concrete for block energy storage tower and preparation method thereof
CN107777981A (en) A kind of regeneration concrete and preparation method thereof
CN110078449B (en) Baking-free brick prepared from sludge generated by flushing broken stone and machine-made sand and preparation method thereof
TWI701228B (en) Concrete composition and method for producing the same
CN110498630B (en) Concrete composite additive, preparation method thereof and concrete
WO2021243441A1 (en) Method for making carbonated precast concrete products with enhanced durability
CN104817286B (en) Preparation method of full-tailing consolidation discharge cementing agent
WO2022203641A2 (en) Production method of geopolymer concrete
Jiao et al. Pottery sand as fine aggregate for preparing alkali-activated slag mortar
CN114920481A (en) Preparation method of modified steel slag mineral admixture, concrete and application
CN109553320B (en) Nickel slag cement expanding agent and silicate cement doped with same
EP3946865A1 (en) Method for making carbonated precast concrete products with enhanced durability
JP6694313B2 (en) Method for producing quick-hardening concrete
CN111592321A (en) Method for enhancing cement mortar strength by pyrophyllite
JP6759470B2 (en) Mortar and its manufacturing method
JP6292257B2 (en) Hydrated solidified product using desulfurized slag
Bahri et al. Mechanical and durability properties of high strength high performance concrete incorporating rice husk ash
JP2016216274A (en) Artificial stone material
CN109437637B (en) Steel slag cement expanding agent and silicate cement doped with same
JP2015131747A (en) cement composition
BiER et al. Ecological, Economical and Environmental Aspects of Self Compacting Concrete–Present and Future

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant