WO2013123181A1 - Compositions et procédés de fabrication de béton - Google Patents

Compositions et procédés de fabrication de béton Download PDF

Info

Publication number
WO2013123181A1
WO2013123181A1 PCT/US2013/026130 US2013026130W WO2013123181A1 WO 2013123181 A1 WO2013123181 A1 WO 2013123181A1 US 2013026130 W US2013026130 W US 2013026130W WO 2013123181 A1 WO2013123181 A1 WO 2013123181A1
Authority
WO
WIPO (PCT)
Prior art keywords
acid
concrete composition
mix
sand
containing compound
Prior art date
Application number
PCT/US2013/026130
Other languages
English (en)
Inventor
Dwayne DILLINGHAM
Dave BRASSARD
Original Assignee
Gobasalt Llc
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 Gobasalt Llc filed Critical Gobasalt Llc
Publication of WO2013123181A1 publication Critical patent/WO2013123181A1/fr

Links

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
    • 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
    • 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
    • C04B20/10—Coating or impregnating
    • C04B20/1018—Coating or impregnating with organic materials
    • C04B20/1022—Non-macromolecular compounds
    • C04B20/1025—Fats; Fatty oils; Ester type waxes; Higher fatty acids; Derivatives 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
    • 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
    • C04B20/10—Coating or impregnating
    • C04B20/1018—Coating or impregnating with organic materials
    • C04B20/1029—Macromolecular compounds
    • 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
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/26—Corrosion of reinforcement resistance
    • 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
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/29—Frost-thaw resistance
    • 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
    • C04B2111/34—Non-shrinking or non-cracking materials
    • 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

  • Embodiments of the present invention relate to construction materials. More specifically, embodiments of the invention relate to concrete compositions with improved properties.
  • Typical concrete also requires a lengthy cure cycle. Many concrete mixtures require up to 28 days to display full strength. These long cure cycles delay projects and create higher project costs. These problems create significant difficulties in the field during lengthy application times, structural quality issues and inefficiency creating budget over-runs. [05] Typical concrete has a short working time. After the typical 1.5 to 2 hrs. are exceeded, the concrete has to be dumped as it will start curing. These short cycles create many handling issues.
  • One or more embodiments of the present invention provides a method for preparing a concrete composition, the method comprising the steps of combining portland cement and one or more aggregates to form a cement pre-mix; combining a boron-containing compound, a silicon-containing compound other than sand, a surfactant, and water to form an additive pre-mix; mixing the cement pre-mix, the additive pre-mix, and water to form a saturated cement mixture; placing the saturated cement mixture in a form; compacting the saturated cement mixture; and curing the saturated cement mixture to form a concrete composition.
  • One or more embodiments of the present invention provides a method for preparing a concrete composition, the method comprising the steps of combining portland cement and one or more aggregates to form a cement pre-mix; combining at least one acid, a silicon-containing compound other than sand, and water to form an additive pre-mix; mixing the cement pre-mix, the additive pre-mix, and water to form a saturated cement mixture; placing the saturated cement mixture in a form; compacting the saturated cement mixture; and curing the saturated cement mixture to form a concrete composition.
  • One or more embodiments of the present invention further provides a method for preparing a concrete composition, the method comprising the steps of combining portland cement and one or more aggregates to form a cement pre-mix; combining at least one organic acid, a silicon-containing compound other than sand, and water to form an additive pre-mix; mixing the cement pre-mix, the additive pre-mix, an encapsulated acid, and water to form a saturated cement mixture; placing the saturated cement mixture in a form; compacting the saturated cement mixture; and curing the saturated cement mixture to form a concrete composition.
  • One or more embodiments of the present invention provides a concrete composition prepared by combining portland cement and one or more aggregates to form a cement pre-mix; combining a boron-containing compound, a silicon-containing compound other than sand, a surfactant, and water to form an additive pre-mix; mixing the cement pre- mix, the additive pre-mix, and water to form a saturated cement mixture; placing the saturated cement mixture in a form; compacting the saturated cement mixture; and curing the saturated cement mixture to form a concrete composition.
  • One or more embodiments of the present invention provides a concrete composition
  • a concrete composition comprising portland cement; one or more aggregates selected from the group consisting of sand, crushed stone, and gravel; one or more surfactants selected from the group consisting of amphoteric, anionic, cationic, and nonionic surfactants, with the proviso that the compostion comprises less than 0.1 wt.
  • % of any air entrainment surfactant a boron- containing compound selected from the group consisting of boron nitride, borax, boric acid, and sodium salts of boric acid; and a silicon-containing compound other than sand selected from the group consisting of silicates, siloxanes, polyhedral oligomeric silsesquioxane (POSS), silsequioxanes, silicone MQ resins, silanes, silicone polymers, silicone copolymers, and wet or dry silica, fused or ground quartz (from about 5 microns to about 100 microns in particle size), colloidal silica, precipitated silica, organosilane-treated precipitated silica (primary particle size from about 13 to about 100 nanometers), fumed silica and organosilane- treated fumed silica (particle size from about 9 nanometers to about 300 nanometers).
  • a boron- containing compound selected from the group consisting of
  • One or more embodiments of the invention further provide a concrete composition
  • a concrete composition comprising portland cement; one or more aggregates selected from the group consisting of sand, crushed stone, and gravel; one or more acids selected from the group consisting of organic acids; a silicon-containing compound other than sand, selected from the group consisting of silicates, siloxanes, polyhedral oligomeric silsesquioxane (POSS), silsequioxanes, silicone MQ resins, silanes, silicone polymers, silicone copolymers, and wet or dry silica, fused or ground quartz (from about 5 microns to about 100 microns in particle size), colloidal silica, precipitated silica, organosilane-treated precipitated silica (primary particle size from about 13 to about 100 nanometers), fumed silica and organosilane-treated fumed silica (particle size from about 9 nanometers to about 300 nanometers); and optionally one or more en
  • Fig. 1 is a graphical representation of temperature (°F) versus time for Example E.
  • Fig. 2 is a graphical representation of temperature versus time for Example F.
  • Fig. 3 is a graphical representation of temperature versus time for Example B.
  • Fig. 4 is a graphical representation of temperature versus time for Example D.
  • FIGs. 5-18 are sequential pictorial representations of testing according to ASTM E-119.
  • Embodiments of the compositions of the present invention utilize a unique combination of key additives to create portland concrete mixes having very unique properties. In one or more embodiments, these unique properties are accomplished via a more thorough hydration of the concrete.
  • the concrete compositions include portland cement, one or more aggregates, one or more surfactants, a boron-containing compound, and a silicon- containing compound other than sand.
  • the portland cement is defined by ASTM C 150.
  • the portland cement includes calcium oxide, silicon dioxide, aluminum oxide, ferric oxide, and sulfate.
  • the portland cement includes calcium oxide, CaO, 61-67%, silicon dioxide, Si0 2 , 19-23%, aluminum oxide, A1 2 0 3 , 2.5-6%, ferric oxide, Fe 2 0 3 , 0-6%, sulfate 1.5-4.5%, wherein all percentages are expressed in mass percent.
  • the amount of portland cement in the concrete composition is not particularly limited. In one or more embodiments, the amount of portland cement is from about 5 to about 25 wt. %, based upon the total weight of the concrete composition. In other embodiments, the amount of portland cement is from about 7 to about 20 wt. %, in other embodiments, from about 9 to about 18 wt. %, based upon the total weight of the concrete composition.
  • Examples of aggregates include, without limitation, sand, gravel, and crushed stone.
  • the aggregates include sand and crushed stone. Mixtures of stone dust and larger crushed stone may be employed.
  • crushed stone include class 57 stone. In one or more embodiments, the average diameter of the class 57 stone is from about 0.75 inches to about 1 inch.
  • the amount of aggregates in the concrete composition is not particularly limited.
  • the amount of crushed stone is from about 30 to about 70 wt. %, in other embodiments from about 35 to about 68 wt. %, in other embodiments, from about 38 to about 65 wt. %, based upon the total weight of the concrete composition.
  • the amount of sand is from about 30 to about 70 wt. %, in other embodiments from about 35 to about 68 wt. %, in other embodiments, from about 38 to about 65 wt. %, based upon the total weight of the concrete composition.
  • surfactants include, without limitation amphoteric, anionic, cationic and nonionic surfactants.
  • the surfactant is selected from anionic surfactants, with the proviso that the anionic surfactant is not an air entrainment surfactant. While some anionic surfactants have previously been employed at high pH (8-14) for air entrainment, air entrainment surfactants are not preferred in the present invention, because direct fire contact will cause spallation when the concrete contains micro bubbles. Therefore, in one or more embodiments, the concrete compositions of the present invention contain less than about 0.1 wt. % of air entrainment surfactants, in other embodiments, less than about 0.05 wt.
  • the concrete composition is devoid of air entrainment surfactants.
  • the amount of surfactant (non-air entrainment surfactant) in the concrete composition is from about 0.01 to about 0.10 wt. %, in other embodiments, from about 0.02 to about 0.08 wt. %, based upon the total weight of the concrete composition.
  • Examples of boron-containing compounds include salts, acids and esters. More specific examples of boron-containing compounds include boron nitride, borax, boric acid, sodium salts of boric acid, and the like.
  • the amount of boron-containing compound in the concrete composition is from about 0.01 to about 0.20 wt. %, in other embodiments, from about 0.02 to about 0.18 wt. %, in other embodiments, from about 0.05 to about 0.15 wt. %, based upon the total weight of the concrete composition.
  • Examples of silicon-containing compounds other than sand include, without limitation, silicates, siloxanes, polyhedral oligomeric silsesquioxane (POSS), silsequioxanes, silicone MQ resins, silanes, silicone polymers, silicone copolymers, and wet or dry silica.
  • Examples of silicas include fused or ground quartz (from about 5 microns to about 100 microns in particle size), colloidal silica, precipitated silica and organosilane-treated precipitated silica (primary particle size from about 13 to about 100 nanometers), fumed silica and organosilane-treated fumed silica (particle size from about 9 nanometers to about 300 nanometers).
  • siloxanes are employed.
  • the siloxanes may lower surface tension of the composition.
  • examples of siloxanes include silsequioxanes, POSS, trimethyl and silanol terminated polydimethylsiloxanes, and hydride-terminated siloxane copolymers.
  • the amount of silicon-containing compound other than sand in the concrete composition is from about 0.01 to about 0.50 wt. %, in other embodiments, from about 0.02 to about 0.45 wt. %, in other embodiments, from about 0.05 to about 0.41 wt. %, in other embodiments, from about 0.08 to about 0.39 wt. %, based upon the total weight of the concrete composition.
  • the concrete compositions include portland cement, one or more aggregates, one or more acids, and a silicon-containing compound other than sand.
  • the portland cement, one or more aggregates, and silicon-containing compound other than sand may be as described above.
  • a surfactant may also be present, as described above.
  • the acid is an organic acid.
  • the organic acid is a carboxylic acid.
  • the carboxylic acid may be selected from the group consisting of acetic acid, formic acid, citric acid, oxalic acid, benzoic acid, propionic acid, stearic acid, malic acid, malonic acid, butyric acid, and the like.
  • the amount of organic acid in the concrete composition is from about 0.001 to about 0.25 wt. %, in other embodiments, from about 0.01 to about 0.20 wt. %, in other embodiments, from about 0.1 to about 0.18 wt. %, based upon the total weight of the concrete composition.
  • the concrete composition includes two or more acids.
  • the two or more acids include a mineral acid and an organic acid.
  • at least one of the acids is encapsulated.
  • encapsulated acids include acetic acid, phosphoric acid, hydrochloric acid, sulfuric acid, nitric acid, formic acid, acetic acid, sulfamic acids, citric acid, glycolic acid, maleic acid, and fumeric acid.
  • encapsulation shell material examples include semi-permeable membrane material such as, but not limited to, partially to fully hydrogenated vegetable oil, such as tristearin, latex, gelatins, carageenans, polyethylene, polypropylene, polyisobutylene, a copolymer of vinyl chloride and vinylidene chloride, a copolymer of vinylidene chloride and an ester of an unsaturated carboxylic acid or a copolymer of ethylene and an unsaturated carboxylic acid.
  • semi-permeable membrane material such as, but not limited to, partially to fully hydrogenated vegetable oil, such as tristearin, latex, gelatins, carageenans, polyethylene, polypropylene, polyisobutylene, a copolymer of vinyl chloride and vinylidene chloride, a copolymer of vinylidene chloride and an ester of an unsaturated carboxylic acid or a copolymer of ethylene and an unsaturated carboxylic acid.
  • the thickness of the shell is from about 0.1 millimeter (mm) to about 2.0 mm.
  • the thickness of the shell and the type of shell material may be selected such that the shell dissolves or ruptures within a certain time period, thus allowing the acid to mix with the other ingredients and initiate cure of the cement.
  • the amount of encapsulated acid in the concrete composition is from about 0.1 to about 0.5 wt. %, in other embodiments, from about 0.11 to about 0.45 wt. %, based upon the total weight of the concrete composition.
  • Optional ingredients may also be present, such as additives known in the art of concrete, with the proviso that they do not deleteriously affect the properties of the concrete.
  • additives that have typically been used in conventional concrete compositions are not necessary for the compositions of the present invention, and can be limited or absent.
  • the compositions of the present invention contain less than about 0.5 wt. % of any super plasticizers, in other embodiments less than about 0.2 wt. %, in other embodiments less than about 0.1 wt. % super plasticizers, based upon the total weight of the concrete composition.
  • the compositions are devoid of super plasticizers.
  • the compositions of the present invention contain less than about 0.5 wt. % of any accelerators, in other embodiments less than about 0.2 wt. %, in other embodiments less than about 0.1 wt. % accelerators, based upon the total weight of the concrete composition. In one or more embodiments, the compositions are devoid of accelerators.
  • the compositions of the present invention contain less than about 0.5 wt. % of any high pH soaps, in other embodiments less than about 0.2 wt. %, in other embodiments less than about 0.1 wt. % high pH soaps, based upon the total weight of the concrete composition. In one or more embodiments, the compositions are devoid of high pH soaps.
  • water is added during the process of mixing the concrete ingredients, in order to hydrate the cement.
  • the amount of water may vary, so long as enough water is added to saturate and hydrate the portland cement. In one or more embodiments, the amount of water is from about 0.2 to about 0.8, in other embodiments, from about 0.25 to about 0.6 parts by weight, per hundred parts by weight of the composition.
  • An exemplary mixture of a standard Class C concrete, without the additives of the present invention, would include about 564 pound of standard type 1 portland cement, about 1800 pounds of class 57 stone, about 1200 pounds of sand, and about 25 gallons of water. Into this standard Class C mix the key additives are utilized at levels less than about 2 percent and greater than about 0.1 % by weight.
  • the present invention further provides a method of preparing a concrete composition, the method comprising the steps of combining ingredients that include portland cement, one or more aggregates, one or more surfactants, a boron-containing compound, a silicon-containing compound other than sand, and water, to form a mixture.
  • the mixture is substantially homogeneous. That is, the aggregate is substantially well-distributed throughout the mixture.
  • the mixture may be characterized as having a liquid paste consistency.
  • the present invention further provides a method of preparing a concrete composition, the method comprising the steps of combining ingredients that include portland cement, one or more aggregates, a silicon-containing compound other than sand, one or more acids, and water, to form a mixture.
  • the mixture is substantially homogeneous. That is, the aggregate is substantially well-distributed throughout the mixture.
  • the mixture may be characterized as having a liquid paste consistency.
  • the aggregates may be pre-blended prior to adding them to the cement.
  • the portland cement and aggregates are mixed with stirring or rotation, prior to adding the surfactants, boron-containing compound, and silicon-containing compound other than sand.
  • One or more of the ingredients may be pre- mixed with water, and added to the mixture as a slurry or solution.
  • the method further comprises the steps of placing the mixture, compacting the mixture, and curing the mixture.
  • the composition of the shell of the microencapsulated acid, as well as the shell thickness can be selected to activate the cure of the mixutre at any desired cure time. As the shell dissolves, at the desired cure time, the mixture rapidly turns solid.
  • the methods of the present invention enable a cure-on-demand capability, while maintaining a relatively low hydration exotherm.
  • the concrete compositions contain less free water within the cured concrete composition, when compared to standard concrete compositions, where standard concrete compositions are concrete compositions that contain the same amount of portland cement, aggregates, and water, but do not contain the additives taught herein.
  • the cured concrete compositions of the present invention are substantially non-porous.
  • the non-porosity results in reduced spallation from both freezing and exposure to high temperatures.
  • the sealed concrete composite material will not allow surface water, salts, chloride containing liquids or other liquids to permeate into the cured concrete composite. This sealed structure will enable a long service-life product by reducing premature wear from spallation and in addition minimize metallic rebar corrosion.
  • concrete compositions of the present invention results in a concrete composite product that is more durable, and offers a non-exotherm capability unique in concrete type products. That is, embodiments of the present invention exhibit a lower hydration exotherm than standard concrete compositions.
  • Embodiments of the methods of the present invention provide a cure-on-demand curing technology, wherein the user may select a desired open time prior to a rapid on-set of cure.
  • Example A was prepared by combining the following ingredients, in a concrete mixer, at approximately room temperature (65 oF), in the order shown, to form a mixture having the following proportions:
  • Example B was prepared by combining the following ingredients, in a concrete mixer, at approximately room temperature (65 oF), in the order shown, to form a mixture having the following proportions:
  • Example C was prepared by combining the following ingredients, in a concrete mixer, at approximately room temperature (65 oF), in the order shown, to form a mixture having the following proportions:
  • Comparative Control Example D was prepared by combining the following ingredients, in a concrete mixer, at approximately room temperature (65 oF), in the order shown, to form a mixture having the following proportions:
  • Example A Compared to Example D was measured as follows. The samples were weighed, and then totally immersed in room temperature water. At intervals of 1 hour, 6 hours, and 12 hours, the samples were removed from the water and towel dried, and then weighed. The measured weight gain for Example A, and the percent weight gain based upon the total original weight, is summarized in Table 1 below. It can be seen that the compositions of the present invention absorb water at a significantly slower rate.
  • Example E was prepared according to the procedure described above for Example B, except that the amount of acid was slightly lower, although still within the stated range.
  • the exotherm during curing for Example E is shown graphically in Fig. 1.
  • Example F was prepared according to the procedure described above for Example B, except that the amount of acid was slightly lower, although still within the stated range, and slightly higher than the amount of acid in Example E. The exotherm during curing for Example F is shown graphically in Fig. 2.
  • Example B was re-run, and the exotherm during curing is shown graphically in Fig. 3.
  • Example D (control) was re-run, and the exotherm during curing is shown graphically in Fig. 4.
  • Cure speed was measured according to ASTM C 1074- 11. Results are summarized below for Example C-l, C-2, C-3 and Control Example D, wherein C-l, C-2, and C-3 were each prepared according to the procedure described above for Example C, and differ only in the thickness of the shell that was used to encapsulate the mineral acid. The thickness of the shell employed in C-3 was greater than the thickness of the shell employed in C-2, which was greater than the thickness of the shell employed in C-l, all of which were within the range disclosed as suitable herein above.
  • Example G was prepared as follows. Portland cement (300 grams) and concrete sand (900 grams) was combined. From about 0.01 to about 0.1 wt. % wet or dry silica was mixed with 36 grams of water. From about 0.001 to about 0.1 wt. % of a mineral acid was added to the water mixture, and then the water mixture was added to the cement/sand mixture. The sample was cubed and tested according to ASTM method CI 09, and the results are shown below.
  • Example H was prepared according to the procedure described above for Example G, except that a slightly lower amount of acid was employed, albeit still within the stated range.
  • Example I was prepared according to the procedure described above for Example G, except that the amount of acid was slightly lower than the amount of acid in Example H, albeit still within the stated range.
  • Example J differs from Example G in that the acid was not pre-mixed with water and silica, but was added straight to the mixture of the cement and aggregate, and also in that the amount of acid was greater than the stated range of 0.001 to 0.1 wt. %.
  • control sample was prepared as follows. Portland cement (300 grams) and concrete sand (900 grams) was combined, and mixed with 36 grams of water. The sample was cubed and tested according to ASTM method CI 09. [68] Examples G, H, I, J and the control were tested according to ASTM method CI 09, and the results are summarized below.
  • Fig. 5-18 concrete compositions prepared according to the present invention, in this case a composition according to Example A, do not exhibit any spoliation when tested according to ASTM E-119.
  • Fig. 5 shows the pre-test condition, with beams in place.
  • Fig. 6 shows the columns and small cylinder in place.
  • Fig. 7 shows the slab being put into place.
  • Fig. 8 shows insulation around the beams and bricks closing the opening between the beams.
  • Fig. 9 shows the gas on.
  • Fig. 10 shows a time of 1 :04.
  • Fig. 11 shows the T/C wire going into the end of the beam.
  • Fig. 12 shows a time of 2:00 and no change.
  • Fig. 13 shows a time of 3:00 and no change.
  • Fig. 5 shows the pre-test condition, with beams in place.
  • Fig. 6 shows the columns and small cylinder in place.
  • Fig. 7 shows the slab being put into place.
  • Fig. 8 shows insulation
  • Fig. 14 shows a time of 4:00 and no change.
  • Fig. 15 shows the removal of the slabe after the test, and the exposed side.
  • Figs. 16 and 17 show the columns and beams intact after the test.
  • Fig. 18 shows the columsn and cylinder after the test.
  • 1 A concrete mixture that allows longer travel times due to a larger percentage of hydration of Portland. This results in a concrete product with less shrinkage and cracking.
  • 2 A concrete mixture that is easier to finish due to its slower curing, due to hydration.
  • 3 A concrete mixture that upon curing displays a fireproof, non-spalling surface when held at direct flame and temperatures as high as 5000 oF. Typically trapped water becomes steam and explodes violently releasing projectiles of concrete.
  • 4 A concrete product that displays a very low surface porosity and low absorption of exposed liquids. Additionally claimed is a reduced rate of chloride ion penetration due to internal pore sealing from the technology.
  • 5 A concrete product that cures faster and stronger than typical concrete, ie. 7 days @ 4660 PSI vs. 7 days to 3660 PSI for 564 pounds portland.
  • 6 Stronger bond to and suspension of stone in mix vs. typical settling out. Enhanced thixotropy through hydrogen bonding enables a uniform suspension of reinforcing solids.
  • 7 Increased flexural strength of 700 vs. 600 PSI and reduced slab curl from a fuller reacted concrete mix and less shrinkage.
  • 8 A concrete product with enhanced freeze thaw potential via internal pore sealing of the concrete. These sealed pores disallow water egress and the resultant expansion and spallation from freezing.
  • 9 A concrete mixture that reduces the production of hydroxides, which are corrosive to steel, metal rebar and application equipment. 10 - A safer to use concrete mixture that through a reduced pH results in less skin irritation and chemical burns. 11 - A safer to use concrete that minimizes skin burns through a greatly reduced or eliminated exotherm. 12 — A green concrete product that through less hydroxides has less impact to the environment via less basic water run-off.
  • 1 A concrete mixture containing key additives that displays, upon curing, a sealed, non-porous composite that has reduced surface porosity and low absorption of exposed liquids. This is unlike standard, unsealed concrete, which absorbs water.
  • 2 A concrete mixture containing key additives that upon curing displays a fireproof, non-spalling surface when held at direct flame at temperatures as low as 1,800 oF. This in unlike standard concrete, which rapidly releases trapped water becoming steam, and explodes violently releasing projectiles of concrete.
  • 3 A concrete mixture containing key additives that offers, through reduced surface permeability to liquids, a reduced rate of liquid absorption and chloride ion penetration due to internal pore sealing from the technology. This reduced chloride content should directly translate to enhanced rebar service life.
  • 4 A concrete mixture containing key additives to result in a more thorough hydration of the cement mixture.
  • 5 A concrete mixture containing key additives to result in a concrete product with reduced free water content. This reduced free water content will result in reduced spallation from freeze thaw conditions.
  • 6 A concrete mixture containing key additives that results in a product with enhanced freeze thaw potential via internal pore sealing of the concrete.
  • a concrete mixture containing key additives that upon curing results in a sealed concrete composite material. Concrete compositions of the present invention require 14 days to fully stop liquid transmission, and don't require a secondary coating operation to be fully sealed. This is unlike standard concrete, which takes 28 days to fully cure and then it requires a secondary operation to be coated to seal-out liquids. 8 - A concrete mixture containing key additives that creates, upon curing, a concrete product that cures stronger than standard concrete. Standard concrete requires 28 days to attain the same 4000 PSI break strength.
  • Concrete compositions of the present invention are unlike standard concrete, which displays a significant exotherm of greater than 75 oF from time of placement.
  • 11 - The methods of the present invention enable a cure on demand capability, by utilizing microencapsulated acidic activators with a water soluble shell.
  • Varying rates of cure are included in the methods of the present invention, and can be accomplished via varying microencapsulation material shell composition and thickness.
  • 13 - Acidic activators within the microencapsulated beads can contain organic acids, which upon reacting with the concrete produce seed crystal formation, resulting in rapid cure with a low heat of hydration.
  • the following is provided.
  • 1 A concrete mixture containing key additives that during curing displays a less than about 8 oF exotherm at 24 hours, as compared to standard concrete, which display a significant exotherm of more than about 75 to 100 oF from placement temperature.
  • 2 A concrete mixture containing key additives that creates upon curing a concrete product that is denser and stronger than standard concrete, and that during curing displays a minimal exotherm of less than about 8 oF.
  • 3 A method of preparing a cured concrete composition wherein no exotherm is produced during curing, or wherein a minimal exotherm is produced during curing.

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)
  • Oil, Petroleum & Natural Gas (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

La présente invention concerne un procédé de préparation d'une composition de béton ayant des propriétés améliorées. Selon l'invention, le procédé comprend les étapes consistant à combiner du ciment Portland et un ou plusieurs agrégats pour former un prémélange de ciment ; à combiner un composé contenant du bore, un composé contenant du silicium autre que du sable, un tensioactif et de l'eau pour former un prémélange additif ; à mélanger le prémélange de ciment, le prémélange additif et de l'eau pour former un mélange de ciment saturé ; à mettre en place le mélange de ciment saturé dans un coffrage ; à compacter le mélange de ciment saturé ; et à polymériser le mélange de ciment saturé pour former une composition de béton. Dans des variantes de mode de réalisation, on peut employer un acide organique et/ou un acide encapsulé.
PCT/US2013/026130 2012-02-14 2013-02-14 Compositions et procédés de fabrication de béton WO2013123181A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201261598566P 2012-02-14 2012-02-14
US61/598,566 2012-02-14
US201361752234P 2013-01-14 2013-01-14
US61/752,234 2013-01-14

Publications (1)

Publication Number Publication Date
WO2013123181A1 true WO2013123181A1 (fr) 2013-08-22

Family

ID=48984696

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2013/026130 WO2013123181A1 (fr) 2012-02-14 2013-02-14 Compositions et procédés de fabrication de béton

Country Status (1)

Country Link
WO (1) WO2013123181A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016114796A1 (fr) 2015-01-16 2016-07-21 Brassard David M Compositions de béton et leur procédé de préparation
CN107474253A (zh) * 2017-08-24 2017-12-15 重庆三圣实业股份有限公司 一种改进型混凝土早强剂及其制备方法
CN108531126A (zh) * 2018-04-03 2018-09-14 苏州世华新材料科技股份有限公司 一种含有硼改性mq有机硅增粘剂的有机硅压敏胶
EP3250536A4 (fr) * 2015-01-26 2018-11-07 United States Mineral Products Company Matériaux résistant au feu appliqués par pulvérisation et résistant à la corrosion
US10196310B2 (en) 2016-08-04 2019-02-05 Geopolymer Solutions LLC Cold fusion concrete
CN110128078A (zh) * 2019-06-10 2019-08-16 济南市坤鹏技术开发中心 一种高强度防水混凝土建筑材料
CN110204278A (zh) * 2019-06-10 2019-09-06 济南市坤鹏技术开发中心 一种高强度防水混凝土建筑结构
CN110407538A (zh) * 2019-07-31 2019-11-05 大连理工大学 一种抗冲击纳米氮化硼改性混凝土
US10954162B1 (en) 2019-09-24 2021-03-23 Geopolymer Solutions, LLC Protective coating
CN115677249A (zh) * 2022-11-22 2023-02-03 河南建筑材料研究设计院有限责任公司 一种水热合成粉煤灰硅酸盐骨料的制备方法
CN116375443A (zh) * 2023-03-31 2023-07-04 江苏五茅建设集团有限公司 一种自修复桥梁裂缝的复合材料及其制备方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001002317A1 (fr) * 1999-07-02 2001-01-11 Densit A/S Materiaux au ciment a eau entrainee
WO2004111382A1 (fr) * 2003-06-13 2004-12-23 Halliburton Energy Services, Inc. Compositions de ciment presentant des caracteristiques de perte du fluide ameliorees et procedes de cimentation dans des formations souterraines
US20070066728A1 (en) * 2005-09-22 2007-03-22 Nippon Shokubai Co., Ltd. Polycarboxylic acid polymer for cement admixture and cement admixture
US20080178770A1 (en) * 2007-01-19 2008-07-31 Ceratech, Inc. High strength cement, mortar and concrete including industrial by-products
US20090234046A1 (en) * 2005-06-15 2009-09-17 Tatsuo Izumi Concrete and mortar admixture
WO2011086095A1 (fr) * 2010-01-15 2011-07-21 Sika Technology Ag Granulat revêtu pour la préparation de béton

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001002317A1 (fr) * 1999-07-02 2001-01-11 Densit A/S Materiaux au ciment a eau entrainee
WO2004111382A1 (fr) * 2003-06-13 2004-12-23 Halliburton Energy Services, Inc. Compositions de ciment presentant des caracteristiques de perte du fluide ameliorees et procedes de cimentation dans des formations souterraines
US20090234046A1 (en) * 2005-06-15 2009-09-17 Tatsuo Izumi Concrete and mortar admixture
US20070066728A1 (en) * 2005-09-22 2007-03-22 Nippon Shokubai Co., Ltd. Polycarboxylic acid polymer for cement admixture and cement admixture
US20080178770A1 (en) * 2007-01-19 2008-07-31 Ceratech, Inc. High strength cement, mortar and concrete including industrial by-products
WO2011086095A1 (fr) * 2010-01-15 2011-07-21 Sika Technology Ag Granulat revêtu pour la préparation de béton

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016114796A1 (fr) 2015-01-16 2016-07-21 Brassard David M Compositions de béton et leur procédé de préparation
EP3245171A4 (fr) * 2015-01-16 2018-07-18 New Technology Solutions, LLC Compositions de béton et leur procédé de préparation
US10494300B2 (en) 2015-01-16 2019-12-03 New Technology Solutions, Llc Concrete compositions and method for making same
EP3250536A4 (fr) * 2015-01-26 2018-11-07 United States Mineral Products Company Matériaux résistant au feu appliqués par pulvérisation et résistant à la corrosion
US10196310B2 (en) 2016-08-04 2019-02-05 Geopolymer Solutions LLC Cold fusion concrete
CN107474253A (zh) * 2017-08-24 2017-12-15 重庆三圣实业股份有限公司 一种改进型混凝土早强剂及其制备方法
CN108531126A (zh) * 2018-04-03 2018-09-14 苏州世华新材料科技股份有限公司 一种含有硼改性mq有机硅增粘剂的有机硅压敏胶
CN108531126B (zh) * 2018-04-03 2019-04-09 苏州世华新材料科技股份有限公司 一种含有硼改性mq有机硅增粘剂的有机硅压敏胶
CN110204278A (zh) * 2019-06-10 2019-09-06 济南市坤鹏技术开发中心 一种高强度防水混凝土建筑结构
CN110128078A (zh) * 2019-06-10 2019-08-16 济南市坤鹏技术开发中心 一种高强度防水混凝土建筑材料
CN110204278B (zh) * 2019-06-10 2021-11-23 临沂市理想家园建材有限公司 一种高强度防水混凝土建筑结构
CN110407538A (zh) * 2019-07-31 2019-11-05 大连理工大学 一种抗冲击纳米氮化硼改性混凝土
US10954162B1 (en) 2019-09-24 2021-03-23 Geopolymer Solutions, LLC Protective coating
CN115677249A (zh) * 2022-11-22 2023-02-03 河南建筑材料研究设计院有限责任公司 一种水热合成粉煤灰硅酸盐骨料的制备方法
CN115677249B (zh) * 2022-11-22 2023-06-27 河南建筑材料研究设计院有限责任公司 一种水热合成粉煤灰硅酸盐骨料的制备方法
CN116375443A (zh) * 2023-03-31 2023-07-04 江苏五茅建设集团有限公司 一种自修复桥梁裂缝的复合材料及其制备方法
CN116375443B (zh) * 2023-03-31 2023-10-24 江苏五茅建设集团有限公司 一种自修复桥梁裂缝的复合材料及其制备方法

Similar Documents

Publication Publication Date Title
WO2013123181A1 (fr) Compositions et procédés de fabrication de béton
CN110272244B (zh) 一种防裂缝混凝土及其制备工艺
JP5715150B2 (ja) エーロゲル複合材ならびにその製造および使用方法
EP3245171B1 (fr) Procédé de préparation des compositions de béton
US8333837B2 (en) Jute fiber-reinforced composition for concrete repair
JP5992148B2 (ja) セメント組成物
JP2017507821A (ja) コンクリートへのコロイダルシリカの添加
KR20140093880A (ko) 혹한기용 외단열 몰탈 및 이를 이용한 외단열 시스템 시공 방법
CN113683357B (zh) 一种抗渗混凝土及其制备方法
KR101380171B1 (ko) 내염성 시멘트를 포함하는 반강성 도로포장용 고내구성 시멘트와 이를 가진 주입 시공한 고내구성 반강성 도로포장 시공방법
WO2021187522A1 (fr) Composition de ciment et produit durci associé
US20220267212A1 (en) Inorganic polymers and use thereof in composite materials
CN112919849A (zh) 一种有机-无机复合憎水功能材料及其制备方法
CN111606599A (zh) 一种混凝土用聚合物改性剂、制备方法以及抗渗防水混凝土
CN106186949A (zh) 一种耐高温阻燃型防水堵漏砂浆及其制作方法
WO2021187520A1 (fr) Corps moulé en béton préfabriqué
JP6216843B2 (ja) セメント硬化体の製造方法
JP2003171161A (ja) 耐熱・高強度コンクリート及びその製造方法
KR101697976B1 (ko) 내염 및 내화학적 콘크리트 구조물에 적합한 콘크리트 보수용 알루미나 세라믹 바인더 기반 조성물 및 그 시공방법
CN104261795A (zh) 一种磷酸盐胶凝材料及其制备方法
Meng et al. Effects and mechanisms of capric acid/silica capsule on water absorption reduction of cement paste
KR102392402B1 (ko) 철근 부식성이 개선된 콘크리트 조성물
KR101618921B1 (ko) 접착성 및 장기내구성이 우수한 외단열용 몰탈 및 이를 이용한 외단열 시스템
KR100622062B1 (ko) 액체방수재
JPS585860B2 (ja) 耐酸性セメントの製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13748606

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13748606

Country of ref document: EP

Kind code of ref document: A1