WO2020157775A1 - Additif pour augmenter la teneur en matériaux cimentaires supplémentaires dans du ciment, du mortier et du béton - Google Patents

Additif pour augmenter la teneur en matériaux cimentaires supplémentaires dans du ciment, du mortier et du béton Download PDF

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Publication number
WO2020157775A1
WO2020157775A1 PCT/IN2020/050098 IN2020050098W WO2020157775A1 WO 2020157775 A1 WO2020157775 A1 WO 2020157775A1 IN 2020050098 W IN2020050098 W IN 2020050098W WO 2020157775 A1 WO2020157775 A1 WO 2020157775A1
Authority
WO
WIPO (PCT)
Prior art keywords
additive
cement
alkali metal
concrete
supplementary cementitious
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.)
Ceased
Application number
PCT/IN2020/050098
Other languages
English (en)
Inventor
Ramkumar Natarajan
Gaurav P. N. KHAUNTE
Krishnamurthy S. MEEMANSHI
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.)
Alcolab (india) LLP
Original Assignee
Alcolab (india) LLP
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
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Publication of WO2020157775A1 publication Critical patent/WO2020157775A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • 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
    • C04B28/021—Ash cements, e.g. fly ash cements ; Cements based on incineration residues, e.g. alkali-activated slags from waste incineration ; Kiln dust 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
    • C04B28/04—Portland 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
    • C04B28/08—Slag 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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • 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 an additive for increasing the loading of supplementary cementitious materials such as fly ash and slag in cement, mortar, concrete or precast concrete products.
  • the additive manufactured according to the present invention may be used along with cement, mortar or concrete as an accelerating composition for increasing the compressive strength or for i ncreasing the percentage loading of Granulated blast furnace slag (GGBFS) or fly ash etc. without affecting the initial strength gain.
  • GGBFS Granulated blast furnace slag
  • the additive according to the present invention generally comprises an alkali metal sulfate having a pH greater or equal to 9, a first alkaline component and or alkali metal thiosulfates and or alkali metal carbonate and or alkanol amine.
  • the composition may further comprise fly ash, a waste by product from a coal burning power plant.
  • Construction related materials such as mortars, blocks, pavers, concretes and plasters are typically formed by combining an aggregate material, such as sand and gravel, with a cementitious binder (cement).
  • a cementitious binder cementitious binder
  • the most common binder used in the world today is Ordinary Portland cement (OPC).
  • OPC is a finely-ground material containing binding phases based on calcium, aluminum, silica and Iron. When a mixture of OPC and an aggregate is further combined with water, a hydration reaction occurs, and the mixture solidifies.
  • OPC has many benefits as a binder in concretes and related materials. Concretes produced using OPC are reasonably quick to set and cure to a high compressive strength. The raw materials for the manufacture of OPC are readily available and the cement itself is relatively cheap. Other cementitious materials, such as pozzolan or blast furnace slags, may produce structures with increased final strength or durability, but the setting and curing of such materials tends to be inferior in comparison with OPC based materials. Thus, conventional cement compositions comprise a proportion of OPC even if other cementitious materials are also used. in recent years, the environmental impact of various industrial processes has become a great global concern. These industrial processes produce substantial amount of waste materials having self or supplementary cementing properties (like slag and fly ash) which can be used beneficially in cement and concrete.
  • self or supplementary cementing properties like slag and fly ash
  • the present invention discloses an additive having a pH greater than 9, that can be used to increase the percentage use of GGBFS or fly ash along with cement, mortars or concrete of any grade without affecting the initial strength gain or other properties.
  • cement grinding aid and preparation method thereof The invention describes a cement grinding aid comprising sodium sulfate, amine, glycol and polyol.
  • the use of sodium thiosulfate or high pH sodium sulfate is not disclosed.
  • the invention relates to the use of a thiosulfate as a setting accelerator for a mineral binder composition, in particular, a cement-containing binder composition comprising different types of thiosulfates.
  • a thiosulfate as a setting accelerator for a mineral binder composition, in particular, a cement-containing binder composition comprising different types of thiosulfates.
  • the use of high pH sodium sulfate is not disclosed. 4) Patent Application Number: W02018122091
  • a strength enhancing admixture for cementitious and/or pozzolanic compositions comprising different types of sulfates, amines, carboxylate ethers etc., however, not including high pH sodium sulfate or thiosulfates. 5) Patent Application Number: WO2016207429 Title: Additive for hydraulically setting compositions
  • the invention relates to an additive for hydraulically setting compositions which is suitable more particularly as a slump retainer. It provides a colloidal composition comprising different inorganic salts of sulfates, phosphates, carbonates etc. The use of high pH sodium sulfate or thiosulfates is not taught by WO2016207429. 6) Patent Application Number: JP2010132547 Title: Cementitious mixture containing high pozzolan cement replacement and compatabilizing admixture therefor
  • a composition for cementitious mixtures containing the pozzolanic cement replacement comprising different inorganic salts of thiosulfates, hydroxides, nitrates, thiocynates, amines etc.
  • JP2010132547 doesn't teach the use of high pH sodium sulfate.
  • GGBFS Granulated blast furnace slag
  • the present invention relates to an additive for increasing the loading of supplementary cementitious materials like fly ash and granulated blast furnace slag in cement, mortar, concrete or precast concrete products.
  • the additive according to the present invention generally comprises at least one of an alkali metal sulfate having a pH greater than 9, an alkali metal thiosulfate or an alkanolamine, where preferably the alkali metal is sodium and the alkanolamine is Triethanol amine.
  • the additive may further include alkali metal nitrate, alkali metal carbonate, alkali metal hydroxide, Polyhydroxyalkylamine or combinations thereof.
  • the additive significantly reduces the delay in setting time and increases early strength gain of concrete or cement containing a high proportion of pozzolanic substitute material for hydraulic or Portland type cement and often eliminates that delay.
  • Pozzolanic cement substitute materials for hydraulic or Portland type cement which can be used in high proportions according to the invention include both Class C and Class F fly ash, blast furnace slag and natural pozzolanic materials or combinations thereof. These substitution materials can be used in proportions greater than 10% by weight, preferably greater than 15% by weight, and most preferably greater than 2G0% y weight of the hydraulic cement and cement substitute. However, it is most preferred that the cementitious mix comprises at least 50% by weight of Portland cement of the total weight of the combination of Portland cement and pozzolanic cement substitute material.
  • the invention relates to a composition
  • a composition comprising sodium sulfate having a pH greater than 9, a source of thiosulfate and a source of amine, to increase the loading of supplementary cementitious materials in cement, concrete and precast products.
  • Supplementary cementitious materials according to the present invention include fly ash (both Class C fly ash and Class F fly ash), blast furnace slag and natural pozzolanic material.
  • Preferable weight proportion of components of the composition a) Alkali metal sulfate having a pH greater than 9. (0.5-95%)
  • the additive of this invention can be added in powder form to a cement composition in weight percentage of 0.1-4% based on the total weight of the additive with clinker, supplementary cementitious material and gypsum. Further, the additive of this invention can be added to a cement, mortar or concrete composition, in the form of an aqueous solution where the weight percentage of the water in said aqueous solution is 0.1-80%, the weight percentage of the alkali metal sulfate is 0.5-95%, the weight percentage of the alkali metal thiosulfate is 0.5-60% and the weight percentage of the Triethanol amine is 0.2-20%.
  • Admixture the composition normally used in concrete for the purpose of retaining the workability of concrete for a longer period.
  • Additive -the composition of the current invention added to increase the supplementary cementitious loading (in this case slag or fly ash).
  • Example 1 Cement trials using sodium sulfate (SS) having two different pH as additive.
  • Example 2 Cement trials with Sodium sulfate having a pH of 10 with increased slag percentage. Sodium sulfate used in both the trials were in powder form. No other chemicals other than sodium sulfate was used.
  • Sodium sulfate used in both the trials were in powder form. No other chemicals other than sodium sulfate was used.
  • Example 3 Cement trials with additive containing sodium thiosulfate and triethanolamine solution (35.7 % water, 53.6% Sodium Thiosulfate, 3.6% sodium sulfate having a pH 10, 7.1% Triethanol amine) with increased slag percentage.
  • Example 4 Cement trials with additive containing sodium thiosulfate and triethanolamine solution (50% water, 45% Sodium Thiosulfate, 5% Triethanol amine) with increased fly ash percentage
  • Example 5 Grade of Concrete -M-30
  • Additive Composition 66.7% water, 26.6 % Sodium Sulfate with a pH of 10 and 6.7% Triethanol amine.
  • Additive Composition 66.7 % water, 26.6 % Sodium Sulfate with a pH of 10 and 6.7% Triethanol amine.
  • Additive Composition 66.7 % water, 26.6 % Sodium Sulfate with a pH of 10 and 6.7% Triethanol amine.

Landscapes

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

Abstract

La présente invention concerne un additif destiné à augmenter la charge de matériaux cimentaires supplémentaires tels que des cendres volantes et du laitier de haut fourneau granulé dans du ciment, du mortier, du béton ou des produits en béton préfabriqué. L'additif selon la présente invention comprend généralement au moins l'un parmi un sulfate de métal alcalin ayant un pH supérieur à 9, un thiosulfate de métal alcalin ou une alcanolamine, de préférence le métal alcalin étant le sodium et l'alcanolamine étant la triéthanolamine. L'additif peut en outre comprendre du nitrate de métal alcalin, du carbonate de métal alcalin, de l'hydroxyde de métal alcalin, de la polyhydroxyalkylamine ou des combinaisons de ceux-ci. L'additif réduit de manière significative le délai dans le temps de prise et augmente le gain de résistance initiale du béton ou du ciment contenant une proportion élevée de matériau de substitution pouzzolanique pour du ciment de type hydraulique ou Portland et élimine souvent ce délai.
PCT/IN2020/050098 2019-01-31 2020-01-30 Additif pour augmenter la teneur en matériaux cimentaires supplémentaires dans du ciment, du mortier et du béton Ceased WO2020157775A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201921003897 2019-01-31
IN201921003897 2019-01-31

Publications (1)

Publication Number Publication Date
WO2020157775A1 true WO2020157775A1 (fr) 2020-08-06

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PCT/IN2020/050098 Ceased WO2020157775A1 (fr) 2019-01-31 2020-01-30 Additif pour augmenter la teneur en matériaux cimentaires supplémentaires dans du ciment, du mortier et du béton

Country Status (1)

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WO (1) WO2020157775A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114835423A (zh) * 2022-05-12 2022-08-02 武汉理工大学 一种用于过磷石膏矿渣水泥早强剂及其制备方法和应用
EP4112589A1 (fr) * 2021-07-01 2023-01-04 HeidelbergCement AG Dispositif d'amélioration des performances pour ciments composites
CN115893880A (zh) * 2022-11-21 2023-04-04 河海大学 一种低碳胶凝材料及其制备方法和应用
CN115947562A (zh) * 2022-06-16 2023-04-11 桂林理工大学 一种高适应性超细矿物掺合料助磨激发剂及其制备方法
EP4286350A1 (fr) * 2022-05-31 2023-12-06 Sika Technology AG Accélérateur de réaction d'aluminosilicates à haute teneur en silicium avec l'eau

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6326790A (en) * 1989-10-06 1991-04-11 W.R. Grace & Co.-Conn. Enhanced blended and portland cement compositions
WO2013150145A1 (fr) * 2012-04-05 2013-10-10 Chryso Adjuvant pour compositions hydrauliques
CA2853143A1 (fr) * 2013-06-05 2014-12-05 Cemblend Systems Inc. Composition cimentaire avec cendres volantes
WO2017085565A2 (fr) * 2015-11-18 2017-05-26 Eko Tech4Trans Pvt. Ltd. Activation exempte de ciment portland de laitier de haut fourneau granulé broyé
US10000414B2 (en) * 2009-07-15 2018-06-19 U.S. Concrete, Inc. Accelerated drying concrete compositions and methods of manufacturing thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6326790A (en) * 1989-10-06 1991-04-11 W.R. Grace & Co.-Conn. Enhanced blended and portland cement compositions
US10000414B2 (en) * 2009-07-15 2018-06-19 U.S. Concrete, Inc. Accelerated drying concrete compositions and methods of manufacturing thereof
WO2013150145A1 (fr) * 2012-04-05 2013-10-10 Chryso Adjuvant pour compositions hydrauliques
CA2853143A1 (fr) * 2013-06-05 2014-12-05 Cemblend Systems Inc. Composition cimentaire avec cendres volantes
WO2017085565A2 (fr) * 2015-11-18 2017-05-26 Eko Tech4Trans Pvt. Ltd. Activation exempte de ciment portland de laitier de haut fourneau granulé broyé

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4112589A1 (fr) * 2021-07-01 2023-01-04 HeidelbergCement AG Dispositif d'amélioration des performances pour ciments composites
CN114835423A (zh) * 2022-05-12 2022-08-02 武汉理工大学 一种用于过磷石膏矿渣水泥早强剂及其制备方法和应用
CN114835423B (zh) * 2022-05-12 2023-02-24 武汉理工大学 一种用于过磷石膏矿渣水泥早强剂及其制备方法和应用
EP4286350A1 (fr) * 2022-05-31 2023-12-06 Sika Technology AG Accélérateur de réaction d'aluminosilicates à haute teneur en silicium avec l'eau
WO2023232775A1 (fr) * 2022-05-31 2023-12-07 Sika Technology Ag Accélérateurs pour la réaction d'aluminosilicates à haute teneur en silice avec de l'eau
CN115947562A (zh) * 2022-06-16 2023-04-11 桂林理工大学 一种高适应性超细矿物掺合料助磨激发剂及其制备方法
CN115893880A (zh) * 2022-11-21 2023-04-04 河海大学 一种低碳胶凝材料及其制备方法和应用
CN115893880B (zh) * 2022-11-21 2023-08-29 河海大学 一种低碳胶凝材料及其制备方法和应用

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