EP4149902A1 - Clinker de ciment portland finement broyé dans un système de mortier multicomposants à base de ciment, destiné à être utilisé comme système de scellement chimique inorganique - Google Patents

Clinker de ciment portland finement broyé dans un système de mortier multicomposants à base de ciment, destiné à être utilisé comme système de scellement chimique inorganique

Info

Publication number
EP4149902A1
EP4149902A1 EP21722923.6A EP21722923A EP4149902A1 EP 4149902 A1 EP4149902 A1 EP 4149902A1 EP 21722923 A EP21722923 A EP 21722923A EP 4149902 A1 EP4149902 A1 EP 4149902A1
Authority
EP
European Patent Office
Prior art keywords
component
mortar system
weight
cementitious
cement
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.)
Pending
Application number
EP21722923.6A
Other languages
German (de)
English (en)
Inventor
Markus Schönlein
Armin Pfeil
Bernhard Middendorf
Tim Schade
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP4149902A1 publication Critical patent/EP4149902A1/fr
Pending 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
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/48—Clinker treatment
    • C04B7/52—Grinding ; After-treatment of ground cement
    • C04B7/527—Grinding ; After-treatment of ground cement obtaining cements characterised by fineness, e.g. by multi-modal particle size distribution
    • 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
    • C04B28/16—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 anhydrite, e.g. Keene's cement
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/06—Quartz; Sand
    • 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
    • C04B18/14—Waste materials; Refuse from metallurgical processes
    • C04B18/146—Silica fume
    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/2641—Polyacrylates; Polymethacrylates
    • C04B24/2647—Polyacrylates; Polymethacrylates containing polyether side chains
    • 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
    • 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
    • C04B40/0042—Powdery mixtures
    • 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
    • C04B40/06—Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers ; Inhibiting the action of active ingredients
    • C04B40/0641—Mechanical separation of ingredients, e.g. accelerator in breakable microcapsules
    • C04B40/065—Two or more component mortars
    • 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
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
    • 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
    • C04B2111/00715—Uses not provided for elsewhere in C04B2111/00 for fixing bolts or the like
    • 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 invention relates to the chemical fastening of anchoring elements in mineral substrates in the construction industry and fastening technology, and in particular relates to the chemical fastening of anchoring elements by means of an inorganic chemical fastening system based on finely ground Portland cement clinker in a multi-component cementitious mortar system.
  • Composite mortars for fastening anchoring elements in mineral substrates in the construction industry and fastening technology are known. These composite mortars are based almost exclusively on organic epoxy-containing resin / hardener systems. However, it is well known that such systems are polluting, expensive, potentially dangerous and / or toxic to the environment and the person who operates them, and they often require special labeling. In addition, organic systems often have a greatly reduced stability when exposed to strong sunlight or otherwise elevated temperatures, which reduces their mechanical performance in the chemical fastening of anchoring elements.
  • a ready-to-use multicomponent cementitious mortar system preferably a two-component cementitious mortar system
  • a two-component cementitious mortar system which matches the prior art systems in terms of environmental aspects, health and safety, handling, storage time and good balance is superior between setting and curing.
  • a cementitious multi-component mortar system is desirable that is characterized by excellent load values.
  • a cementitious system in particular a cementitious multi-component mortar system, in particular a cementitious two-component mortar system, which overcomes the disadvantages of the prior art systems.
  • a ready-to-use cementitious multicomponent mortar system that is easy to handle and environmentally friendly, that can be stored stably for a certain period of time before use and that has a good balance between setting and hardening, and also under the influence of elevated temperatures has excellent mechanical performance in the chemical fastening of anchoring elements in mineral substrates.
  • the present invention relates to a cementitious multicomponent mortar system comprising finely ground Portland cement clinker with a grinding fineness in the range from 6000 to 12000 cm 2 / g, which is for use as an inorganic chemical Fastening system for anchoring elements in mineral substrates is ideally suited to achieve high load values.
  • the present invention relates to a cementitious multi-component mortar system comprising finely ground Portland cement clinker with a grinding fineness in the range from 6000 to 12000 cm 2 / g, a sulfate carrier and optionally silica dust, which is ideally suited for use as an inorganic chemical fastening system for anchoring elements in mineral substrates to achieve high load values.
  • the present invention also relates to the use of such a multi-component cementitious mortar system for the chemical fastening of anchoring means, preferably metal elements, in mineral substrates, such as structures made of masonry, natural stone, concrete, permeable concrete or the like.
  • the present invention also relates to the use of finely ground Portland cement clinker with a grinding fineness in the range from 6000 to 12000 cm 2 / g in a cementitious mortar system as an inorganic chemical fastening system for anchoring elements in mineral substrates to increase the load values.
  • binder or “binder component” relates in the context of the present invention to the cementitious component and optional components such as fillers of the multi-component mortar system. In particular, this is also referred to as the A component.
  • initiator or also “initiator component” relates in the context of the present invention to the aqueous hydrating constituent, preferably Added water that causes stiffening, solidification and hardening as a secondary reaction. In particular, this is also referred to as the B component.
  • a cementitious multi-component mortar system comprising finely ground Portland cement clinker with a grinding fineness in the range from 6000 to 12000 cm 2 / g is ideally suited for use as an inorganic chemical fastening system for anchoring elements in mineral substrates in order to withstand high loads achieve, in particular a cementitious multi-component mortar system comprising finely ground Portland cement clinker with a grinding fineness in the range from 6000 to 12000 cm 2 / g, a sulfate carrier and optionally silica dust.
  • such a system in particular the cementitious multi-component mortar system, is characterized by positive advantages in terms of environmental aspects, health and safety, handling, storage time and a good balance between setting and hardening, without affecting the handling, properties and mechanical performance of the adversely affect the chemical fastening system.
  • the present invention relates to a cementitious multi-component mortar system comprising finely ground Portland cement clinker with a Grinding fineness in the range from 6000 to 12000 cm 2 / g, for use as an inorganic chemical fastening system for anchoring elements in mineral
  • the present invention relates to a multi-component cementitious mortar system comprising finely ground
  • the multi-component cementitious mortar system preferably comprises a binder component and an initiator component. It is preferred that the finely ground portland cement clinker be present in the binder component. It is particularly preferred that the cementitious multi-component mortar system is a two-component mortar system and comprises a powdery cementitious binder component and an aqueous initiator component.
  • the Portland cement clinker of the cementitious multi-component mortar system comprises from 58 to 70% calcium oxide (CaO), from 18 to 26% silicon dioxide (S1O2), from 1 to 10% aluminum oxide (AI2O3) and from 1 to 10% iron oxide (Fe2C> 3).
  • Other parameters of Portland cement clinker are titanium dioxide (T1O2), sodium oxide (Na 2 0), potassium oxide (K2O), chloride, sulfide, phosphorus pentoxide (P2O5), sulfur trioxide (SO3) and magnesium oxide (MgO), which preferably make up less than 5% of the clinker .
  • the clinker phases of the Portland cement clinker of the cementitious multi-component mortar system comprise from 40 to 80% tricalcium silicate (alite) C3S, from 5 to 30% dicalcium silicate (belite) C2S, from 1 to 20% tricalcium aluminate C3A, from 1 to 20% calcium aluminate ferrite C4AF and other phases that are present in smaller quantities in the clinker.
  • the cementitious multicomponent mortar system of the present invention comprises finely ground Portland cement clinker with a grinding fineness in the range from 6000 to 12000 cm 2 / g, preferably in a range from 7000 to 12000 cm 2 / g, most preferably in a range from 9000 to 12000 cm 2 / g.
  • the fine Ground Portland cement clinker has a grinding fineness in the range from 9000 to 12000 cm 2 / g.
  • the multi-component cementitious mortar system of the present invention preferably comprises the finely ground portland cement clinker in a range from 1% to 50% by weight, more preferably from 10% to 40% by weight, most preferably in one Range from 20 wt% to 30 wt% based on the total weight of the binder.
  • the multi-component cementitious mortar system further comprises a sulphate carrier and optionally silica fume.
  • the sulfate carrier and the optional silica fume are preferably present in the binder component.
  • the finely ground Portland cement clinker, the sulphate carrier and optionally silica dust are particularly preferably present in the binder component.
  • the sulphate carrier of the cementitious multi-component mortar system comprises a sulphate carrier selected from the group consisting of calcium sulphate, sodium sulphate, lithium sulphate, magnesium sulphate and potassium sulphalt.
  • the multi-component cementitious mortar system preferably comprises calcium sulfate selected from calcium sulfate dihydrate, calcium sulfate anhydrite, calcium sulfate hemihydrate and mixtures thereof.
  • the sulphate carrier is a mixture of anhydrite and hemihydrate, preferably with a% by weight ratio of 1.5: 1.
  • the sulphate carrier significantly controls the setting behavior of the cement mixed with water.
  • the multicomponent cementitious mortar system of the present invention preferably comprises the sulfate carrier in a range from 1% to 6% by weight, more preferably from 1.5% to 5% by weight, most preferably in a range of 2% by weight to 4% by weight, based on the total weight of the binder component.
  • the sulfate carrier has a grinding fineness in the range from 6000 to 12000 cm 2 / g, preferably in a range from 7000 to 10000 cm 2 / g, most preferably in a range of 8000 to 9500 cm 2 / g is present in the multi-component cementitious mortar system.
  • the silica fume of the multi-component cementitious mortar system is in a range from 1% by weight to 10% by weight, preferably from 2% by weight to 8% by weight, most preferably in a range of 4% by weight up to 6% by weight, based on the total weight of the binder.
  • the silica fume preferably has an average particle size of 0.4 ⁇ m and a surface area of 180,000 to 220,000 cm 2 / g or 18-22 m 2 / g.
  • the silica dust can also be replaced by pozzolan materials or by materials with pozzolan properties or by other fine reactive or inert fillers. These are, for example, corundum, calcite, dolomite, brick flour, rice husk ash, phonolite, calcined clay, fly ash, blast furnace slag, kaolin and metakaolin.
  • the silica fume is present in a range from 5% by weight to 6% by weight, based on the total weight of the binder.
  • At least one filler or filler mixture can be present in the binder component.
  • These are preferably selected from the group consisting of quartz, sand, quartz powder, clay, fly ash, blast furnace slag, pigments, titanium oxides, light fillers, limestone fillers, corundum, dolomite, alkali-resistant glass, crushed stones, gravel, pebbles and mixtures thereof.
  • the at least one filler of the multi-component cementitious mortar system is preferably in a range from 20% by weight to 70% by weight, more preferably from 30% by weight to 60% by weight, most preferably in a range from 40% by weight .-% to 50% by weight, based on the total weight of the binder.
  • the filler is sand and is present in a range from 50 to 55% by weight, based on the total weight of the binder.
  • the filler is a mixture of sand and quartz powder.
  • the sand lies in one In the range from 50% by weight to 55% by weight and the quartz powder in a range from 10% by weight to 11% by weight, based on the total weight of the binder.
  • the binder component can contain at least one accelerator or accelerator mixtures in powder form.
  • Common accelerators for Portland cement can be used.
  • the accelerator consists of at least one alkali and / or alkaline earth metal salt, which is selected from the group consisting of hydroxides, chlorides, sulfates, phosphates, monohydrogen phosphates,
  • the at least one accelerator is an alkali and / or alkaline earth metal salt, a calcium metal salt such as calcium hydroxide, calcium sulfate, calcium carbonate,
  • Calcium chloride calcium nitrate, calcium formate or calcium phosphate, a sodium metal salt such as sodium hydroxide, sodium sulfate, sodium carbonate,
  • the binding agent component can contain other cements, such as calcium aluminate-based cement.
  • the binder component can contain fibers such as mineral fibers, chemical fibers, natural fibers, synthetic fibers, fibers made from natural or synthetic polymers, fibers made from inorganic materials, in particular carbon fibers or glass fibers.
  • the initiator component of the multi-component mortar system comprises water and optionally a superplasticizer.
  • the water content is in a range of more than 70% by weight, preferably more than 80% by weight, most preferably more than 90% by weight, based on the total weight of the initiator component.
  • the water content is in a range from 70% by weight to 100% by weight, more preferably from 80% by weight to 95% by weight, most preferably in a range from 90% by weight to 95% by weight, based on the total weight of the initiator component.
  • the optional flow agent is in a range from 1% by weight to 30% by weight, preferably from 5% by weight to 25% by weight, most preferably in a range from 10% by weight to 20% by weight. -%, based on the total weight of the initiator component, before.
  • the optional superplasticizer is selected from the group consisting of polyacrylic acid polymers with low molecular weight (LMW), Super plasticizers from the family of polyphosphonate polyox and polycarbonate polyox, polycondensates, e.g. naphthalene-sulfonic acid-formaldehyde polycondensate or melamine-sulfonic acid-formaldehyde polycondensate,
  • Suitable flow agents are commercially available products.
  • the water content is 90% to 95% by weight and the superplasticizer content is 5% to 10% by weight, based on the total weight of the initiator component.
  • At least one filler or filler mixture can be present in the initiator component.
  • These are preferably selected from the group consisting of quartz, sand, quartz powder, clay, fly ash, blast furnace slag, pigments, titanium oxides, light fillers, limestone fillers, corundum, dolomite, alkali-resistant glass, crushed stones, gravel, pebbles and mixtures thereof.
  • the initiator component can contain at least one accelerator or accelerator mixtures in aqueous form.
  • Common accelerators for Portland cement can be used.
  • the accelerator consists of at least one alkali and / or alkaline earth metal salt selected from the group consisting of hydroxides, chlorides, sulfates, phosphates, monohydrogen phosphates, dihydrogen phosphates, nitrates, carbonates and mixtures thereof; the at least one accelerator is preferably an alkali and / or alkaline earth metal salt, a calcium metal salt such as calcium hydroxide, calcium sulfate, calcium carbonate, calcium chloride, calcium nitrate, calcium formate or calcium phosphate, a sodium metal salt such as sodium hydroxide, sodium sulfate, sodium carbonate, sodium chloride, sodium nitrate, sodium formate or sodium phosphate, or from Master X-Seed 100 (BASF) .
  • BASF Master X-Seed 100
  • the initiator component can additionally comprise a thickener.
  • the thickener can be selected from the group consisting of bentonite, silica, thickeners based on acrylate, such as alkali-soluble or alkali swellable emulsions, fumed silica, clay and titanate chelating agents.
  • polyvinyl alcohol PVA
  • hydrophobically modified alkali-soluble emulsions HASE
  • hydrophobically modified ethyleneoxy durethane polymers which are known in the art as HEUR
  • cellulose thickeners such as hydroxymethyl cellulose (HMC), hydroxyethyl cellulose (HEC), hydrophobically modified hydroxyethyl cellulose (HMHEC), sodium carboxymethyl cellulose (SCMC), sodium carboxymethyl-2-hydroxyethyl cellulose, 2-hydroxypropylmethyl cellulose, 2-hydroxyethylmethyl cellulose, 2-hydroxybutylmethyl cellulose, 2-hydroxyethyl-ethyl cellulose, 2-hydroxypropyl cellulose, and mixtures thereof, attapulg.
  • Suitable thickeners are commercially available products such as Optigel WX (BYK-Chemie GmbH, Germany), Rheolate 1 (Elementis GmbH, Germany) and Acrysol ASE-60 (The Dow Chemical Company).
  • the A component or binder component which comprises the finely ground Portland cement clinker with a fineness in the range of 6000 to 12000 cm 2 / g, the sulfate carrier and the silica fume, is in solid form, preferably in the form of a powder or dust.
  • the B component or initiator component is in aqueous form, optionally in the form of a slurry or paste.
  • the weight ratio between the A component and the B component is preferably between 10/1 and 1/3, and is preferably 8/1-4/1.
  • the multi-component cementitious mortar system preferably comprises up to 80% by weight of the A component and up to 40% by weight of the B component.
  • the cementitious multi-component mortar system is a two-component mortar system, preferably a cementitious two-component capsule system.
  • the system preferably comprises two or more foil bags for separating the curable binder component and the initiator component.
  • the contents of the chambers, glass capsules or bags, such as foil bags, which under mechanical action, preferably by introducing a Anchoring element, mixed with one another, are preferably already in a borehole.
  • the arrangement in multi-chamber cartridges or buckets or sets of buckets is also possible.
  • the cementitious multi-component mortar system of the present invention can be used for chemical fastening of anchoring elements, preferably metal elements, such as anchor rods, in particular threaded rods, bolts, steel reinforcing rods or the like, in mineral surfaces such as structures made of masonry, concrete, permeable concrete or natural stone .
  • anchoring elements preferably metal elements, such as anchor rods, in particular threaded rods, bolts, steel reinforcing rods or the like, in mineral surfaces such as structures made of masonry, concrete, permeable concrete or natural stone .
  • the multi-component cementitious mortar system of the present invention can be used for chemical fastening of anchoring elements, such as metal elements, in boreholes. It can be used for anchoring purposes that include increasing load capacity and / or increasing bond strength when cured.
  • cementitious multi-component mortar system of the present invention can be used for the application of fibers, scrims, knitted fabrics or composites, in particular fibers with a high modulus, preferably carbon fibers, in particular for reinforcing building structures, for example walls or ceilings or floors, and furthermore for Assembly components, such as plates or blocks, for example made of stone, glass or plastic, can be used on buildings or structural elements.
  • finely ground Portland cement clinker with a grinding fineness in the range from 6000 to 12000 cm 2 / g is used in a multi-component cementitious mortar system in order to increase the load values.
  • finely ground Portland cement clinker with a grinding fineness in the range of 6000 to 12000 cm 2 / g, a sulfate carrier and optionally silica fume is used in a cementitious two-component mortar system in order to increase the load values.
  • Composition of the clinker Table 1 Chemical composition, characteristic values and phase composition of the clinker meals, determined by means of X-ray fluorescence analysis (XRF) and X-ray diffraction analysis (RBA)
  • the powdery binder component (A component) and the liquid initiator component (B component) of Comparative Examples 1, 8, 10, 12 and 14 and Examples 2-7, 9, 11, 13 and 15 according to the invention are first produced
  • Table 2 Composition of component A based on finely ground Portland cement clinker (% by weight).
  • Calcium sulfate mixture of calcium sulfate hemihydrate and calcium sulfate anhydrite in a% by weight ratio of 1: 1.5; Fineness of grind in cm 2 / g (Blaine) 9,000; Size distribution (pm) 0.1-30.
  • silica fume fineness of grind in cm 2 / g (Blaine) 180,000-220,000; Size distribution (pm) 0.1-10. 3) Sand: size distribution (pm) 125-1000.
  • Quartz flour size distribution (pm) 0.1-100.
  • Table 3 Composition of component B (% by weight).
  • Table 4 Mixing ratio of component A to component B.
  • the powdery binder component A and the initiator component B are mixed with a mixer. All samples are mixed for 1 minute. The mixtures are poured into a stainless steel sleeve drill hole with a diameter of 12 mm, an anchorage depth of 32 mm and ground undercuts of 0.33 mm. Immediately after filling, an M8 threaded rod with a length of 100 mm is inserted into the borehole.
  • the load values of the hardened mortar compositions are determined at certain times within 24 hours using a "Zwick Roell Z050" material testing device (Zwick GmbH & Co. KG, Ulm, Germany).
  • the stainless steel sleeve is attached to a plate, while the threaded rod is attached to the force measuring device with a nut.
  • the breaking load is determined by pulling out the threaded rod in the middle.
  • Each sample consists of an average of five extracts.
  • the breaking load is calculated as the internal strength and given in Table 5 in N / mm 2 .
  • Table 5 Internal strength in N / mm 2 .
  • finely ground binders of the present invention in particular with a fineness in the range of 6000 to 12000 cm 2 / g, preferably a particle fineness of 10,000 to 12,000 cm 2 / g, increases the load values and thus increases the mechanical properties Strength even at low temperatures compared to systems with low particle fineness of 3000 cm 2 / g.

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

Abstract

L'invention concerne un système de mortier multicomposants à base de ciment comprenant du clinker de ciment Portland finement broyé présentant une finesse de broyage comprise dans la plage allant de 6 000 à 12 000 cm2/g, destiné à être utilisé comme système de scellement chimique inorganique pour des éléments d'ancrage dans des substrats minéraux.
EP21722923.6A 2020-05-15 2021-05-06 Clinker de ciment portland finement broyé dans un système de mortier multicomposants à base de ciment, destiné à être utilisé comme système de scellement chimique inorganique Pending EP4149902A1 (fr)

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EP20174877.9A EP3909931A1 (fr) 2020-05-15 2020-05-15 Clinker de ciment portland finement moulu dans un système de mortier cimentaire à composants multiples pour l'utilisation en tant que système de fixation chimique inorganique
PCT/EP2021/062012 WO2021228683A1 (fr) 2020-05-15 2021-05-06 Clinker de ciment portland finement broyé dans un système de mortier multicomposants à base de ciment, destiné à être utilisé comme système de scellement chimique inorganique

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EP4149902A1 true EP4149902A1 (fr) 2023-03-22

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EP20174877.9A Withdrawn EP3909931A1 (fr) 2020-05-15 2020-05-15 Clinker de ciment portland finement moulu dans un système de mortier cimentaire à composants multiples pour l'utilisation en tant que système de fixation chimique inorganique
EP21722923.6A Pending EP4149902A1 (fr) 2020-05-15 2021-05-06 Clinker de ciment portland finement broyé dans un système de mortier multicomposants à base de ciment, destiné à être utilisé comme système de scellement chimique inorganique

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US (1) US20230167027A1 (fr)
EP (2) EP3909931A1 (fr)
CN (1) CN115397787A (fr)
AU (1) AU2021271085A1 (fr)
CA (1) CA3173280A1 (fr)
WO (1) WO2021228683A1 (fr)

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DE102007046835B3 (de) * 2007-09-29 2009-06-10 Holcim Technology Ltd. Verfahren und Anlagen zur Herstellung von Mehrkomponentenzementen
DE102011006286B4 (de) * 2011-03-29 2014-05-15 Hilti Aktiengesellschaft Hybridbindemittel-Zusammensetzung und deren Verwendung
RU2544355C2 (ru) * 2013-03-18 2015-03-20 Закрытое акционерное общество "ИМЭТСТРОЙ" (ЗАО "ИМЭТСТРОЙ") Способ производства наноцемента и наноцемент
RU2737095C2 (ru) * 2015-10-20 2020-11-24 Хильти Акциенгезельшафт Применение содержащей сульфат кальция двухкомпонентной системы строительного раствора на основе глинозёмистого цемента при использовании анкерного закрепления для увеличения значений нагрузки и уменьшения усадки
DE102016001761A1 (de) * 2016-02-16 2017-08-17 Janet Arras Formulierung einer schnellerstarrenden Betonmischung und Verfahren zur Anwendung
MX2019010234A (es) * 2017-04-12 2019-10-15 Sika Tech Ag Sistema de mortero de múltiples componentes en una bolsa de mezcla.
EP3636619A1 (fr) * 2018-10-10 2020-04-15 Hilti Aktiengesellschaft Système de mortier d'injection inorganique à deux composants à base de ciment alumineux fin ayant des valeurs de charge accrues

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AU2021271085A1 (en) 2022-11-03
CN115397787A (zh) 2022-11-25
EP3909931A1 (fr) 2021-11-17
WO2021228683A1 (fr) 2021-11-18
CA3173280A1 (fr) 2021-11-18
US20230167027A1 (en) 2023-06-01

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