WO2015060667A1 - Composition de mortier à durcissement rapide pour la réparation de routes, et son procédé de préparation - Google Patents

Composition de mortier à durcissement rapide pour la réparation de routes, et son procédé de préparation Download PDF

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Publication number
WO2015060667A1
WO2015060667A1 PCT/KR2014/010018 KR2014010018W WO2015060667A1 WO 2015060667 A1 WO2015060667 A1 WO 2015060667A1 KR 2014010018 W KR2014010018 W KR 2014010018W WO 2015060667 A1 WO2015060667 A1 WO 2015060667A1
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Prior art keywords
weight
mortar
mortar composition
road repair
aggregate
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PCT/KR2014/010018
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English (en)
Korean (ko)
Inventor
남기철
Original Assignee
주식회사 휴리스
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.)
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Publication of WO2015060667A1 publication Critical patent/WO2015060667A1/fr

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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
    • C04B22/08—Acids or salts thereof
    • 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
    • C04B28/34—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 cold phosphate binders
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • 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
    • 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
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
    • 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

Definitions

  • the present invention relates to a mortar composition for super-speed road repair, and a method for manufacturing the same, and more particularly, excellent adhesion to existing ground concrete, good workability, and the required strength can be obtained in a short time.
  • the present invention relates to a super speed mirror mortar composition suitable for use in repairing road defects, and a method of manufacturing the same.
  • Concrete structures are subject to various natural or artificial effects after construction, resulting in deterioration of physical performance due to physical and chemical deformation depending on the years of use.
  • efforts to restore safety and functional performance have been increased. Accelerating aging of such construction structures causes cross-sectional defects in the structure, ie concrete, due to expansion pressures caused by corrosion, freeze-thawing, carbonation, and so on. This may cause problems.
  • the aluminate-based mortar has a problem that the product is not stable in the long term as the product is transferred to a secondary hydrate that exhibits low strength after the hydration reaction, and in particular, it is vulnerable to calcium chloride, thereby deteriorating durability.
  • calcium fluoroaluminate-based and sub-type mortar is relatively superior in performance, but it may not be economical because it requires a separate firing process and a process to be pulverized into fine powder is added.
  • the mortar manufactured through the alkali-activated material is mostly fast-speed, not super-fast, and at least one day of strength is required after mixing with water. For example, road repairs in winter, bridge repairs, construction at water contact sites, etc. are difficult to apply.
  • Patent Document 0001 Domestic Registered Patent No. 10-0807850 (registered February 20, 2008)
  • Patent Document 0002 Domestic Patent No. 10-0982469 (September 09, 2010 registration)
  • Patent Document 0003 Domestic Publication No. 10-1999-0048208 (July 05, 1999 publication)
  • the present invention is to provide a mortar composition for super-speed roadway repair that can obtain the required strength in a short time while maintaining excellent adhesion to the ground concrete and good workability.
  • the present invention is to provide a mortar composition for the super-speed road repair that does not contain a lime component, such as the existing Portland cement can be repaired the road in an environmentally friendly manner, and solve the delay problem of curing time in winter.
  • the present invention is to provide a method of manufacturing a mortar composition for super-speed road repairing economical and stable to repair the shortage of the road in a short time because the curing time proceeds faster than the conventional Portland cement.
  • the present invention is to provide a method for producing a mortar composition for super-speed roadway repair to improve the injection and transport characteristics of the phosphate cement, to manufacture at low cost, and to adjust the curing time to adjust the desired compressive strength. .
  • the mortar composition for super-speed road repair according to the present invention, phosphate 10 to 20% by weight, calcium silicate 3 to 6% by weight, silica fume 15 to 25% by weight, inorganic binder 20 to 60% by weight, aluminum oxide 5 to 10% by weight And 5 to 10 weight percent of magnesium oxide.
  • the phosphate may be used potassium monophosphate.
  • the silica fume may have a density of 2.0 to 2.2 g / cm 3 and a specific surface area of 150,000 to 200,000 cm 2 / g.
  • the silica fume may be an average particle diameter of 0.2 to 0.5 ⁇ m.
  • the silica fume may be configured in a granular form.
  • the inorganic binder may be a mixture of fly ash and aggregate.
  • the aggregate may be one or two or more of bottom ash aggregate, steelmaking slag aggregate, copper smelting slag aggregate and nickel smelting slag aggregate.
  • the road repair mortar composition may further include a lower silica.
  • the lower silica has a particle size of 212 ⁇ m or less (average particle diameter of 50 ⁇ m) and has a range of 30 to 50 wt%, and particles of 212 ⁇ m or more may have a range of 50 to 70 wt%.
  • a method for preparing mortar for superhard roadway repair includes mixing 10 to 20% by weight of phosphate and 3 to 6% by weight of calcium silicate with respect to a dry mortar powder composed of 20 to 60% by weight of an inorganic binder. 15-25 wt% of silica fume, 5-10 wt% of magnesium oxide, and 5-10 wt% of aluminum oxide may be mixed using a mixer to prepare a slurry to form a slurry, followed by natural curing.
  • the natural curing may be a vibratory molding by injecting a mixture of the slurry phase into the molding die, and may be natural curing in the curing machine adjusted to room temperature after demolding.
  • the cemented carbide road repair mortar may further include lower silica.
  • the mortar composition for the super fast-speed road repair according to the present invention has an effect of achieving desired strength in a short time while maintaining excellent adhesion with the ground concrete and maintaining good workability.
  • the mortar composition for cemented carbide road repair according to the present invention does not contain the same lime component as the conventional portland cement, so that the road can be repaired in an environmentally friendly manner, and there is an effect of solving the problem of delay in curing time in winter. .
  • the manufacturing method of the mortar composition for the super-speed road repair according to the present invention since the curing time proceeds faster than the existing Portland cement, it is possible to repair the shortage of the road in a short time has an excellent economic and stability effect.
  • the manufacturing method of the mortar composition for the super fast-paced road repair according to the present invention improves the spraying and pressure-feeding characteristics of phosphate cement, it is manufactured at low cost, the effect of controlling the desired compressive strength by adjusting the curing time There is.
  • the superfine mortar composition for road repair includes 10 to 20 wt% of phosphate, 3 to 6 wt% of calcium silicate, 15 to 25 wt% of silica fume, 20 to 60 wt% of inorganic binder, and 5 to 5 aluminum oxide. 10 weight percent and 5 to 10 weight percent magnesium oxide.
  • the phosphate may be contained in an amount of 10 to 20% by weight based on the total mortar composition for the super fast-speed road repair.
  • the phosphate used in the present invention is potassium monophosphate, potassium diphosphate, potassium triphosphate, sodium monophosphate, sodium diphosphate, sodium triphosphate, aluminum phosphate, zinc phosphate, ammonium polyphosphate, sodium nucleated metaphosphate, calcium monophosphate , Calcium diphosphate, calcium triphosphate and the like can be used.
  • the phosphate When the phosphate is added, it is possible to confirm that the binding time of the binder is extended, and the extended time during the manufacture of the product enables the molding of the product and induces the rearrangement time of the raw materials, thereby suppressing cracking in the product. Done.
  • the termination termination time is extended in various ways depending on the type of phosphate used, and this advantage can be seen that the applicability can be greatly extended depending on the site.
  • the calcium silicate may be included in the amount of 3 to 6% by weight based on the total mortar composition for the super speed road repair.
  • the calcium silicate is used to improve the spraying and pumping properties of the phosphate. Mortar formed from the phosphate tends to cure quickly and has excellent chemical stability and compressive strength, but mortar made of phosphate has poor spraying and pumping properties due to its fast cure property. Therefore, the calcium silicate (calcium silicate) by adding 3 to 6% by weight, it is possible to improve the spraying and feeding properties of the mortar prepared by the phosphate.
  • the silica fume may be included in an amount of 15 to 25% by weight based on the total mortar composition for the ultrafast mirror road repair.
  • the silica fume exerts a high binding force with alkali ions, and can improve the mixing properties between components when pouring mortar.
  • the silica fume is a material concentrated from the gas discharged from the furnace, and contains a large amount of amorphous silicon secondary oxide, and may be very fine spherical particles.
  • the silica fume may have a density of 2.0 to 2.2 g / cm 3 and ultrafine particles having a specificity of 150,000 to 200,000 cm 2 / g.
  • the silica fume may have an average particle diameter of 0.2 to 0.5 ⁇ m, and may be ultrafine particles having an average particle diameter of 0.2 ⁇ m, which is advantageous in terms of a highly reactive mortar material.
  • the silica fume type may be in its original form as powder (as-produced), sludge suspended in water, pelletized, densified or compacted, etc., preferably It may be granular in consideration of workability and workability with other powders.
  • the silica fume may be included in the 15 to 25% by weight, if the silica fume is included in the above range may provide the appropriate viscosity, mixing and workability when pouring mortar.
  • the inorganic binder may be included in 20 to 60% by weight.
  • the inorganic binder is a mixture of fly ash aggregate, the aggregate may be one or two or more of the bottom ash aggregate, steelmaking slag aggregate, copper smelting slag aggregate and nickel smelting slag aggregate.
  • wastes such as fly ash, bottom ash, urban waste incineration, aggregate ash and blast furnace slag generated in thermal power plants.
  • 15-30% is used as a mixed material in the composition, the amount of use is drastically reduced in the winter due to delay of curing time.
  • the inorganic binder is used to mix the fly ash aggregate
  • the aggregate may be one or two or more of the bottom ash aggregate, steelmaking slag aggregate, copper smelting slag aggregate and nickel smelting slag aggregate.
  • the bottom ash can be used by sieving the state that is discarded by grinding in a coal-fired power plant as it is to a certain particle size.
  • the steelmaking slag is divided into an electric furnace slag generated when smelting scrap metal and a converter slag generated in the process of making molten steel.
  • Furnace slag is further classified into electric furnace oxidizing slag generated in the primary oxidation refining plant and reducing slag generated in the casting process after the secondary reduction refining.
  • the reducing slag has a high content of free CaO and MgO, which are expandable materials, and is difficult to use as aggregate.
  • Electric Arc Furnace Oxidizing Slag containing relatively less free CaO is used as fine aggregate in the composition for concrete of the present invention under the system that no reducing slag is incorporated.
  • the copper smelting slag is a slag generated in the copper smelting process, and the main component is iron olivine (fayalite) (2FeOSiO 2 ), and also includes metal oxides such as CaO, MgO, and Al 2 O 3 .
  • the nickel smelting slag is a slag generated in a ferronickel smelter and is a silicate material of magnesium and iron and is composed of metal oxides such as MgO, Fe 2 O 3 , and SiO 2 .
  • Ultrasonic mirror road repair mortar composition according to the present invention may further comprise a lower silica.
  • the lower silica may be contained 15 to 25% by weight based on the total weight of the inorganic binder.
  • the lower silica may be utilized for the lower silica that is disposed of or disposed of around the mine, or cover.
  • Lower quartzite is produced from the blasting process and the crushing process to dig the silica, and the particle size is 212 ⁇ m or less (average particle size 50 ⁇ m) and has a range of 30 to 50% by weight, and the particles larger than 212 ⁇ m 50 ⁇ 70 It is preferred to have a range of weight percent.
  • the main chemical composition of the lower silica used in the present invention is SiO 2 (79.2% by weight) + Al 2 O 3 (13.3% by weight) is composed of 92.5% by weight, as a minor component Fe 2 O 3 , MgO, Na 2 O And other ingredients may include 7.5 weight percent.
  • the aluminum oxide may be included in 5 to 10% by weight.
  • the aluminum oxide can be used to cure the mortar for road repair according to the invention very quickly.
  • the aluminum oxide has a short curing time and is strong in water.
  • the aluminum oxide protects the mortar coating, the internal reinforcing bars, etc. by the coating, and the aluminum oxide coating blocks the penetration of air to exert strong corrosion resistance and water resistance.
  • the magnesium oxide may be included in 5 to 10% by weight.
  • the magnesium oxide is to determine the reaction rate, the reaction rate is controlled due to the magnesium oxide, it is possible to suppress the generation of severe heat during the production of mortar for road repair.
  • the inorganic binder is a mixture of fly ash aggregate, the aggregate may be one or two or more of the bottom ash aggregate, steelmaking slag aggregate, copper smelting slag aggregate and nickel smelting slag aggregate.
  • phosphate potassium monophosphate, potassium diphosphate, potassium triphosphate, sodium monophosphate, sodium diphosphate, sodium triphosphate, aluminum phosphate, zinc phosphate, ammonium polyphosphate, sodium nucleated metaphosphate, calcium monophosphate, calcium diphosphate , Calcium triphosphate, and the like can be used, and preferably potassium monophosphate can be used.
  • the calcium silicate may be added to improve the injection and transport characteristics of the phosphate.
  • silica fume may be ultrafine particles having a density of 2.0 to 2.2 g / cm 3 and specific surface area of 150,000 to 200,000 cm 2 / g, and have an average particle diameter of 0.2 to 0.5 ⁇ m.
  • the slurry prepared using the mortar mixer as described above is vibrated using a vibration molding machine, and is molded without adding any external force other than vibration.
  • the molded article obtained by the present invention is produced by natural curing in a curing machine adjusted to room temperature (25 ° C) after demolding.
  • the high-strength super-speed roadway repair mortar using phosphate, calcium silicate, silica fume, inorganic binder, aluminum oxide and magnesium oxide produced by the present invention is a significant improvement of the existing molding and curing process to be produced only by natural curing. There are features that can be.
  • the inorganic binder used in the present invention 50 wt% of the inorganic binder was dry mixed using a mortar mixer.
  • the fly ash and the bottom ash aggregate were used, and the fly ash and the bottom ash aggregate were mixed to be 1: 1 in weight ratio.
  • 15% by weight of phosphate and 6% by weight of calcium silicate were added to the total weight of the mortar composition for ultra-fast road repair, and potassium monophosphate was used as the phosphate.
  • the molded specimen was cured for a certain time by natural curing, and then cured at room temperature to prepare a mortar composition for ultra-fast road repair.
  • the mortar composition for the super speed mirror road repair according to the present invention has been confirmed that the compressive strength is 11.2N / mm 2 and the daily compressive strength is 33.0N / mm 2, the super-speed and super-tension strength It is expected to be preferably used as an emergency road repair mortar.
  • it shows excellent performance in flexural strength, adhesion strength, alkali resistance, neutralization resistance, and chloride ion penetration resistance.
  • the length change rate is -0.3 ⁇ 0.3% as the length change rate is -0.11%. It can be seen that the stability is greater than that of the general mortar. Therefore, the present invention is expected to be advantageous in durability when applied as an emergency road repair mortar.

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

Abstract

La présente invention concerne une composition de mortier à durcissement rapide pour la réparation de routes, qui peut présenter d'excellentes performances d'adhérence au béton et de maintien d'une bonne maniabilité, et obtenir en un bref laps de temps la résistance mécanique souhaitée et requise. La composition de mortier à durcissement rapide pour la réparation de routes selon la présente invention comprend 10 à 20 % en poids de phosphate ; 3 à 6 % en poids de silicate de calcium ; 15 à 25 % en poids de silice fumée ; 20 à 60 % en poids d'un matériau liant organique ; 5 à 10 % en poids d'oxyde d'aluminium et 5 à 10 % en poids d'oxyde de magnésium. La composition de mortier à durcissement rapide mentionnée ci-dessus pour la réparation de routes selon la présente invention permet de réparer une route d'une manière respectueuse de l'environnement, car elle ne contient pas de composants chaux, tel qu'un ciment Portland classique, résout le problème de retard du temps de cure en hiver, est économique et a une excellente stabilité du fait qu'elle répare en un bref laps de temps une partie défectueuse de la route, puisque le durcissement progresse rapidement par comparaison avec le ciment Portland classique.
PCT/KR2014/010018 2013-10-25 2014-10-23 Composition de mortier à durcissement rapide pour la réparation de routes, et son procédé de préparation WO2015060667A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2013-0128018 2013-10-25
KR1020130128018A KR101653564B1 (ko) 2013-10-25 2013-10-25 초속경 도로보수용 몰탈 조성물 및 그 제조방법

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WO2015060667A1 true WO2015060667A1 (fr) 2015-04-30

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Cited By (1)

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CN112374836A (zh) * 2020-12-01 2021-02-19 中冶宝钢技术服务有限公司 一种水泥稳定碎石凝胶料及其制备方法和用途

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* Cited by examiner, † Cited by third party
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CN112759352A (zh) * 2020-12-28 2021-05-07 山东航空港建设工程有限公司 一种快速道面修补磷酸盐水泥混凝土胶结材料及其制备方法

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KR20100070983A (ko) * 2008-12-18 2010-06-28 주식회사 예람 인산염을 함유하는 고강도 결합재 조성물
KR20100121029A (ko) * 2009-05-08 2010-11-17 이주형 에코그린포장
KR101022895B1 (ko) * 2010-05-20 2011-03-16 박병욱 가로수 보호용 블록 및 그 제조방법
KR20120074385A (ko) * 2010-12-28 2012-07-06 홍석주 순환골재를 사용한 주입형 초속경 포장공법

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112374836A (zh) * 2020-12-01 2021-02-19 中冶宝钢技术服务有限公司 一种水泥稳定碎石凝胶料及其制备方法和用途

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