WO2011038426A2 - Additif pour des compositions à base de ciment et de suppression des poussières - Google Patents

Additif pour des compositions à base de ciment et de suppression des poussières Download PDF

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Publication number
WO2011038426A2
WO2011038426A2 PCT/ZA2010/000057 ZA2010000057W WO2011038426A2 WO 2011038426 A2 WO2011038426 A2 WO 2011038426A2 ZA 2010000057 W ZA2010000057 W ZA 2010000057W WO 2011038426 A2 WO2011038426 A2 WO 2011038426A2
Authority
WO
WIPO (PCT)
Prior art keywords
additive
plant extract
ions
active ingredient
surface active
Prior art date
Application number
PCT/ZA2010/000057
Other languages
English (en)
Other versions
WO2011038426A3 (fr
Inventor
Pieter Gideo Van Der Merwe
Original Assignee
Pieter Gideo Van Der Merwe
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 Pieter Gideo Van Der Merwe filed Critical Pieter Gideo Van Der Merwe
Publication of WO2011038426A2 publication Critical patent/WO2011038426A2/fr
Publication of WO2011038426A3 publication Critical patent/WO2011038426A3/fr
Priority to ZA2011/04444A priority Critical patent/ZA201104444B/en

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
    • 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
    • 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
    • C04B24/16—Sulfur-containing compounds
    • C04B24/18—Lignin sulfonic acid or derivatives thereof, e.g. sulfite lye
    • 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
    • C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
    • C04B2103/0075—Anti-dusting agents

Definitions

  • the invention relates to an additive for a cementitious composition, such as concrete.
  • an additive for cementitious compositions or dust suppression compositions including at least:
  • the plant extract may be selected from the group including short chain carbohydrates, long chain carbohydrates, oils, gums, salts thereof, and mixtures thereof.
  • the plant extract may be derived from wood or grasses.
  • the plant extract may be derived from sugar cane.
  • the plant extract may include wood sugars.
  • the plant extract may include lignine and sulphur derivatives thereof, such as lignosulphates and lingosulphonates.
  • Typical lignosulphates of the invention include sodium lignosulphate and calcium lignosulphate.
  • the plant extract may be heated to a temperature of from 50°C to 350°C.
  • the plant extract may be heated to a temperature of from 100°C to 250°C.
  • the heat treatment temperature of the plant extract may be maintained for a period of from 0.1 hours, typically from 0.5 hours to 5 hours, in some embodiments from 2 to 3 hours.
  • the heat treated plant extract may be emulsified with the surface active ingredient, and optionally water or another liquid.
  • the surface active ingredient may be an anionic surfactant.
  • the surface active ingredient may include a base liquid including solid particles and/or ions dispersed or dissolved in water in the following percentage ranges by volume:
  • Nitrate ions 1 to 2% Nitrate ions 1 to 2%
  • the base liquid may be prepared by dissolving sodium chloride and sodium alkyl ether sulphate in the water of the base liquid, with the proportion of the water to sodium chloride to sodium alkyl ether sulphate being between 1 : 1 : 1 ,5 and 1 : 1 : 5.
  • the surface active ingredient may include sea water as a component thereof whereby one or more of the particles and/or ions are present in the sea water and any deficiencies are made up by addition thereof in the form of salts, dispersions, and/or solutions.
  • the sea water may include or be synthetic sea water whereby the particles and/or ions are introduced into water to achieve a sea water like composition having the percentages by volume as per the above.
  • the surface active ingredient composition may be a product available from Marine 3 Technologies (Pty) Ltd under the designation M3T 3005TM .
  • the additive may contain binders and/or fillers.
  • the binders and/or fillers may be of plant and/or crude oil origin.
  • the additive may include a carbonaceous material, for example, activated charcoal.
  • the additive may include water retention aids, for example, polymers.
  • the additive may include a catalyst, for example, one or more of urea, formaldehyde, and citric acid.
  • a catalyst for example, one or more of urea, formaldehyde, and citric acid.
  • the additive may include magnesium sulphate.
  • the additive may include water or treated water.
  • the additive may include a pH modifier.
  • the additive may include aluminium sulphate.
  • a method of preparing an additive for use in cemetitious compositions and/or dust suppression compositions including the step of emulsifying a plant extract and a surface active ingredient as described above.
  • the method may include the prior step of heat treating the plant extract at a temperature of from 50°C to 350°C maintained for a period of from 0.1 hours.
  • the plant extract may be heated to a temperature of from 100°C to 250°C.
  • the heat treatment temperature may be maintained for a period of from 0.5 hours to 5 hours, in some embodiments from 2 to 3 hours
  • the method may include blending polymers into the emulsion.
  • the blending may be performed by a high speed mixer or pump agitation.
  • wood sugars deriving from the paper and pulp industry, or sugarcane industry.
  • the wood sugars are present in a dilute liquid form and thus first need to be evaporated to remove excess water and to form a concentrate. Typically from 50% -70% of the water is evaporated.
  • the wood sugars are then processed as calcium lignosulphate.
  • the concentrated wood sugars are then heat treated at a temperature of from 100°C to 250°C for 2-3 hours. It is believed that this heat treatment caramelizes the wood sugars to form long-chain carbohydrates.
  • the heat treated wood sugars are emulsified with anionic surfactants to enhance the chemical and/or physical properties associated with binders and fillers, organic or chemical. These additives are typically used in amounts of from 1 mass% to 25 mass%.
  • carbon fortified material can be added as an additional agent, to increase strength and durability, depending on the required application.
  • carbonaceous material may be added in an amount of from 1 mass% to 5 mass%.
  • Polymers such as Hydro SpamTM which aid water retention and assist the binding material may be added.
  • the polymers are believed to spread and transfer properties of materials to bind and/or penetrate dust particles. From 1 mass% to 25 mass% polymers are blended into the emulsion with a high speed mixer or agitated with pumps. If a gloss finish, friction resistance or increased water permeability is required, a mix of urea, formaldehyde and citric acid as a catalyst could be added at a rate of from 1 mass% to 25 mass% blend in a 500 : 20 : 1 ratio.
  • Magnesium Sulphate due to its high solubility, could be added at an amount of up to 5 mass% as a soil agent.
  • H 2 0 treated with 0 3 and/or anodized and/or treated with sodium and/or fresh and/or sea water and/or synthetic sea water is added to form a slurry. Typically this forms from 10 mass% to 90 mass% of the additive depending on the use.
  • Ph of water could be altered by standard means, if required.
  • the anionic surfactant is typically M3T 2005TM from Marine 3 Technologies (Pty) Ltd and is believed to reduce surface and interfacial tension in water, remove sterric charges, aid penetration and aid wetting of dust and aggregates.
  • the anionic surfactant forms from 0.001 mass% to 5 mass% of the final liquid composition applied for dust suppression.
  • All mixing and adding of products is a blend or mix in dry or liquid with stirrers, mixers or pumps.
  • the additive may be stored in bulk or decanter into drums.
  • Example 2 The additive may be stored in bulk or decanter into drums.
  • composition of example 2 is typically the same as that of example 1 , with the following differences:
  • Aluminium sulfate is used to make the concrete waterproof and to accelerate curing and is used at a rate of from 1 mass% to 5 mass%.
  • Polymers can be added to influence the PI at a rate of from 1 mass% to 5 mass%
  • Advantages of the additive of the invention as exemplified are believed to include that the anionic surfactant enhances and manipulates the properties of water, resulting in the reduction of water in concrete up to 40% and improving MPa and CBR thereof.
  • Applications of the invention include uses thereof in concrete and cement preparation in the building and construction environment, road stabilization and compaction, and dust suppression.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)

Abstract

L'invention porte sur un additif pour des compositions à base de ciment et/ou des compositions de suppression de poussières, ledit additif comprenant au moins un extrait végétal choisi dans le groupe comprenant les glucides à chaîne courte, les glucides à longue chaîne, les huiles, les gommes, leurs sels et des mélanges de ceux-ci, et un ingrédient tensio-actif. L'invention s'étend à un procédé de préparation d'un additif destiné à être utilisé dans des compositions à base de ciment/ou des compositions de suppression de poussières, ledit procédé comprenant l'étape d'émulsification d'un extrait végétal et d'un ingrédient tensio-actif, comprenant le traitement thermique de l'extrait végétal à une température de 50°C à 350°C maintenue pendant une période de 0,1 heure avant l'émulsification par l'ingrédient tensio-actif.
PCT/ZA2010/000057 2009-09-28 2010-09-27 Additif pour des compositions à base de ciment et de suppression des poussières WO2011038426A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA2011/04444A ZA201104444B (en) 2009-09-28 2011-06-15 Additive for cementitious and dust suppression compositions

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA200906733 2009-09-28
ZA2009/06733 2009-09-28

Publications (2)

Publication Number Publication Date
WO2011038426A2 true WO2011038426A2 (fr) 2011-03-31
WO2011038426A3 WO2011038426A3 (fr) 2011-06-09

Family

ID=43796541

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2010/000057 WO2011038426A2 (fr) 2009-09-28 2010-09-27 Additif pour des compositions à base de ciment et de suppression des poussières

Country Status (2)

Country Link
WO (1) WO2011038426A2 (fr)
ZA (1) ZA201104444B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2899173A1 (fr) * 2014-01-28 2015-07-29 Sika Technology AG Extrait de bois en tant qu'agent plastifiant pour liants minéraux
EP3023399A1 (fr) * 2014-11-18 2016-05-25 Total Marketing Services Composition d'additif anti-poussière pour matériau de construction

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5085708A (en) * 1988-01-20 1992-02-04 Sandoz Ltd. Lignosulfonates, oxycarboxylates, polycarboxylates, and polyoxalklene, alkylaryl and alkyl ethers admixtures for ultra-dry mix concrete
WO2002090286A1 (fr) * 2001-05-04 2002-11-14 Alpb - Aditivos E Ligantes Para Betões, Lda. Melanges de plastifiants a base de lignosulfonates
CN1587176A (zh) * 2004-08-27 2005-03-02 华南理工大学 木素系加气混凝土用高效砂浆外加剂及其制备方法
JP2010037116A (ja) * 2008-07-31 2010-02-18 Flowric:Kk セメント組成物用収縮低減剤及びセメント組成物

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5085708A (en) * 1988-01-20 1992-02-04 Sandoz Ltd. Lignosulfonates, oxycarboxylates, polycarboxylates, and polyoxalklene, alkylaryl and alkyl ethers admixtures for ultra-dry mix concrete
WO2002090286A1 (fr) * 2001-05-04 2002-11-14 Alpb - Aditivos E Ligantes Para Betões, Lda. Melanges de plastifiants a base de lignosulfonates
CN1587176A (zh) * 2004-08-27 2005-03-02 华南理工大学 木素系加气混凝土用高效砂浆外加剂及其制备方法
JP2010037116A (ja) * 2008-07-31 2010-02-18 Flowric:Kk セメント組成物用収縮低減剤及びセメント組成物

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2899173A1 (fr) * 2014-01-28 2015-07-29 Sika Technology AG Extrait de bois en tant qu'agent plastifiant pour liants minéraux
WO2015113993A1 (fr) * 2014-01-28 2015-08-06 Sika Technology Ag Extrait de bois servant de plastifiant pour des liants minéraux
EP3023399A1 (fr) * 2014-11-18 2016-05-25 Total Marketing Services Composition d'additif anti-poussière pour matériau de construction
WO2016079176A1 (fr) * 2014-11-18 2016-05-26 Total Marketing Services Composition d'additif anti-poussières pour matériau de construction
US11214719B2 (en) 2014-11-18 2022-01-04 Total Marketing Services Anti-dust additive composition for construction material

Also Published As

Publication number Publication date
WO2011038426A3 (fr) 2011-06-09
ZA201104444B (en) 2012-07-25

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