WO2003070655A1 - Composition fluide controlee a faible resistance - Google Patents

Composition fluide controlee a faible resistance Download PDF

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Publication number
WO2003070655A1
WO2003070655A1 PCT/US2003/004835 US0304835W WO03070655A1 WO 2003070655 A1 WO2003070655 A1 WO 2003070655A1 US 0304835 W US0304835 W US 0304835W WO 03070655 A1 WO03070655 A1 WO 03070655A1
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WO
WIPO (PCT)
Prior art keywords
calcium
fly ash
class
composition
amount
Prior art date
Application number
PCT/US2003/004835
Other languages
English (en)
Inventor
Scott F. Timmons
Original Assignee
Flowable Fill, Ltd.
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 Flowable Fill, Ltd. filed Critical Flowable Fill, Ltd.
Priority to AU2003219790A priority Critical patent/AU2003219790A1/en
Publication of WO2003070655A1 publication Critical patent/WO2003070655A1/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
    • C04B28/021—Ash cements, e.g. fly ash cements ; Cements based on incineration residues, e.g. alkali-activated slags from waste incineration ; Kiln dust cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
    • 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
    • C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
    • C04B2111/00706—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like around pipelines 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • 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

  • This invention relates to Controlled Low-Strength Mixtures (CLSMs), or flowable back-fills.
  • CLSMs Controlled Low-Strength Mixtures
  • This class of materials has utility as pipe bedding materials where they are used to both protect the pipe from external agents and internal loads. They have also been used as an erosion barrier in embankments and as a mine fill material.
  • CLSMs typically have strengths of less than 2000 psi and, in cases where removal is contemplated, less than 200 psi for ease of removal.
  • the material should be initially in the form of an easily pumpable, self-leveling slurry. Rapid early strength development (approximately 50-70 psi) is a desirable property and is currently not obtainable with commercial products without the penalty of high strength development at later stages.
  • Patent No. 5,106,422 discloses Class C Fly ash in a rapid setting flowable backfill composition and method for its use.
  • existing compositions are based upon the use of either Portland cement or Class C fly ash used individually or in combination as the hydraulic cement component of the CLSM system.
  • these cementitious materials are used at less than 5% by weight in the case of Portland cement or as much as 50% in the case of Class C fly ash with the remainder being some form of aggregate, usually fine sand or soil from the spoil with small amounts of additional rock and gravel or Class F fly ash.
  • Cement-based materials can take days to hydrate, cure, and achieve even a modest strength of 50 psi which is typically the minimum strength required for a man to walk upon the surface of the bedding material and represents the minimum safe time before the cover fill may be placed.
  • Class C fly ash based systems may take as long as four hours to hydrate, cure, and achieve this strength. In many cases, locally available Class C fly ash is not desirable for use in these types of product due to slow hydration, cure, and set times and low strengths. Strength may be compensated for by the use of additional Class C fly ash but the cost of the additional fly ash may result in cost prohibitive products.
  • the system of the present invention minimizes the down time before cover fill may be placed and represents a significant savings of both time and money for the user.
  • the present inventive composition and method allow for control variability in strength and hydration, cure, and set times of a CLSM system utilizing Class C fly which results in a Class C-based flowable fill capable of competing in markets previously inaccessible.
  • BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a graphic representation of the effect of set time of Class C mortars with lime.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Class C fly ash as defined in ASTM C 618 is a coal combustion product that meets particular size requirements and mineralogical specifications.
  • a typical chemical composition for this class of fly ash is as follows: Percent by Weight Silicon dioxide (SiO 2 ) plus aluminum oxide (Al 2 O 3 ) plus iron oxide (Fe 2 O 3 ), min. 50.0 Sulfur trioxide (SO 3 ), max. 5.0 Moisture content, max. 3.0 Loss on ignition, max. 6.0 This is a rather broad description for this class of material, and significant variability may exist for materials conforming to this requirement. The variability manifests itself as differences in hydration and set time and strength between several samples of Class C fly ash either from the same or different sources. It has been found that a major factor contributing to variability is the amount of available calcium present in the sample.
  • Class C Fly ash 50 grams of Class C Fly ash, 250 grams ASTM C 33 graded washed silica sand (Espey Sand, San Antonio, Texas) and 35 mL deionized water were mixed for 1 minute and poured into a 2" cube mold. The set time was determined to be 62 minutes as shown in Table 1 below. Examples 2-8 Coal Fly ash from Deeley Power Plant, San Antonio, Texas, was obtained and used as received. 50 grams of Class C Fly ash, 250 grams ASTM C 33 graded washed silica sand (Espey Sand, San Antonio, Texas), varying amounts of type S hydrated lime and 35 mL deionized water were mixed for 1 minute and poured into a 2" cube mold.

Landscapes

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

Abstract

Cette invention concerne une composition contrôlée à prise rapide et à faible résistance, à base de cendres volantes de classe C, qui renferme une quantité suffisante de chaux éteinte pour accélérer l'hydratation et le temps de prise desdites cendres volantes. Dans certains exemples, on ajoute un matériau de charge. L'invention porte sur une méthode permettant d'accélérer l'hydratation et le temps de prise d'un mélange à base de ciment auquel on ajoute de la chaux éteinte à raison de 0,1 % à 5 % en poids du matériau à base de ciment. On peut également ajouter une source de calcium aux cendres volantes de classe C pour en accélérer l'hydratation et le temps de prise.
PCT/US2003/004835 2002-02-20 2003-02-19 Composition fluide controlee a faible resistance WO2003070655A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003219790A AU2003219790A1 (en) 2002-02-20 2003-02-19 Controlled low strength flowable fill composition

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US35813602P 2002-02-20 2002-02-20
US60/358,136 2002-02-20

Publications (1)

Publication Number Publication Date
WO2003070655A1 true WO2003070655A1 (fr) 2003-08-28

Family

ID=27757707

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/004835 WO2003070655A1 (fr) 2002-02-20 2003-02-19 Composition fluide controlee a faible resistance

Country Status (2)

Country Link
AU (1) AU2003219790A1 (fr)
WO (1) WO2003070655A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004080911A1 (fr) * 2003-03-10 2004-09-23 Flowable Fill, Ltd. Composition de remblai fluide, regulee, de faible resistance, contenant des compose de chelation du fer
US7288148B2 (en) * 2004-02-13 2007-10-30 Cemex, Inc. Rapid hardening hydraulic cement from subbituminous fly ash and products thereof
CN104496222A (zh) * 2014-12-11 2015-04-08 同济大学 用电石渣、钢渣和煤矸石制造可控性低强度材料的方法
US9561983B2 (en) * 2014-06-25 2017-02-07 CR Minerals Company, LLC Pozzolanic compositions containing fly ash and remediation agents for use in cementitious materials
CN106396436A (zh) * 2015-07-28 2017-02-15 武汉科技大学 一种将钢渣水洗尘泥改质成水泥熟料的方法
US10457601B2 (en) 2017-02-24 2019-10-29 CR Minerals Company, LLC Settable compositions comprising remediated fly ash (RFA) and methods of cementing in subterranean formations
US10822442B2 (en) 2017-07-17 2020-11-03 Ecolab Usa Inc. Rheology-modifying agents for slurries

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4018617A (en) * 1976-02-02 1977-04-19 Nicholson Realty Ltd. Mixture for pavement bases and the like
WO1989005284A1 (fr) * 1987-12-11 1989-06-15 Lone Star Industries, Inc. Ciment hydraulique et composition l'utilisant
AT394036B (de) * 1989-12-20 1992-01-27 Oesterr Draukraftwerke Fliessfaehige mischung zum verfuellen von hohlraeumen, wie kuenetten fuer fernwaermerohre, lagertanks, mit einem gehalt an flugasche, hydraulischem bindemittel und wasser
US5106422A (en) 1991-01-18 1992-04-21 American Electric Power Service Corporation Rapid-setting flowable backfill composition and method of using
FR2672046A1 (fr) * 1991-01-29 1992-07-31 Jacquart Arnould Procede d'activation de liants hydrauliques et pouzzolaniques latents a l'aide de residus industriels basiques.
EP0539287A1 (fr) * 1991-10-22 1993-04-28 Eurogranulats Composition pour assise de chaussée à base de laitier d'aciérie électrique et procédé pour la préparer
US5584792A (en) * 1995-01-10 1996-12-17 Webster; William C. Method of stabilizing industrial wastes and fly ash compositions useful in same
DE19531942A1 (de) * 1995-08-18 1997-02-20 Ver Energiewerke Ag Verfahren zur Herstellung von hydraulisch erhärtenden Deponiebaustoffen und -systemen für Deponatverfestigung und -immobilisierung aus Rückständen von Braunkohlenkraftwerken
EP1112985A2 (fr) * 1999-12-16 2001-07-04 Halliburton Energy Services, Inc. Compositions de puits fluides et durcissables
US6277189B1 (en) * 1999-08-31 2001-08-21 The Board Of Trustees Of Southern Illinois University Coal combustion by-products-based lightweight structural materials and processes for making them
US6334895B1 (en) * 1998-07-20 2002-01-01 The University Of Wyoming Research Corporation System for producing manufactured materials from coal combustion ash

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4018617A (en) * 1976-02-02 1977-04-19 Nicholson Realty Ltd. Mixture for pavement bases and the like
WO1989005284A1 (fr) * 1987-12-11 1989-06-15 Lone Star Industries, Inc. Ciment hydraulique et composition l'utilisant
AT394036B (de) * 1989-12-20 1992-01-27 Oesterr Draukraftwerke Fliessfaehige mischung zum verfuellen von hohlraeumen, wie kuenetten fuer fernwaermerohre, lagertanks, mit einem gehalt an flugasche, hydraulischem bindemittel und wasser
US5106422A (en) 1991-01-18 1992-04-21 American Electric Power Service Corporation Rapid-setting flowable backfill composition and method of using
FR2672046A1 (fr) * 1991-01-29 1992-07-31 Jacquart Arnould Procede d'activation de liants hydrauliques et pouzzolaniques latents a l'aide de residus industriels basiques.
EP0539287A1 (fr) * 1991-10-22 1993-04-28 Eurogranulats Composition pour assise de chaussée à base de laitier d'aciérie électrique et procédé pour la préparer
US5584792A (en) * 1995-01-10 1996-12-17 Webster; William C. Method of stabilizing industrial wastes and fly ash compositions useful in same
DE19531942A1 (de) * 1995-08-18 1997-02-20 Ver Energiewerke Ag Verfahren zur Herstellung von hydraulisch erhärtenden Deponiebaustoffen und -systemen für Deponatverfestigung und -immobilisierung aus Rückständen von Braunkohlenkraftwerken
US6334895B1 (en) * 1998-07-20 2002-01-01 The University Of Wyoming Research Corporation System for producing manufactured materials from coal combustion ash
US6277189B1 (en) * 1999-08-31 2001-08-21 The Board Of Trustees Of Southern Illinois University Coal combustion by-products-based lightweight structural materials and processes for making them
EP1112985A2 (fr) * 1999-12-16 2001-07-04 Halliburton Energy Services, Inc. Compositions de puits fluides et durcissables

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004080911A1 (fr) * 2003-03-10 2004-09-23 Flowable Fill, Ltd. Composition de remblai fluide, regulee, de faible resistance, contenant des compose de chelation du fer
US7288148B2 (en) * 2004-02-13 2007-10-30 Cemex, Inc. Rapid hardening hydraulic cement from subbituminous fly ash and products thereof
US10017418B2 (en) 2014-06-25 2018-07-10 CR Minerals Company, LLC Pozzolanic compositions containing fly ash and remediation agents for use in cementitious materials
US9561983B2 (en) * 2014-06-25 2017-02-07 CR Minerals Company, LLC Pozzolanic compositions containing fly ash and remediation agents for use in cementitious materials
US9611174B2 (en) 2014-06-25 2017-04-04 CR Minerals Company, LLC Pozzolanic compositions containing fly ash and remediation agents for use in cementitious materials
US10370295B2 (en) 2014-06-25 2019-08-06 CR Minerals Company, LLC Pozzolanic compositions containing fly ash and remediation agents for use in cementitious materials
US10377667B2 (en) 2014-06-25 2019-08-13 CR Minerals Company, LLC Pozzolanic compositions containing fly ash and remediation agents for use in cementitious materials
US10689292B2 (en) 2014-06-25 2020-06-23 CR Minerals Company, LLC Pozzolanic compositions containing fly ash and remediation agents for use in cementitious materials
US11299424B2 (en) 2014-06-25 2022-04-12 CR Minerals Company, LLC Pozzolanic compositions containing fly ash and remediation agents for use in cementitious materials
US11773018B2 (en) 2014-06-25 2023-10-03 CR Minerals Company, LLC Pozzolanic compositions containing coal ash and remediation agents for use in cementitious materials
CN104496222A (zh) * 2014-12-11 2015-04-08 同济大学 用电石渣、钢渣和煤矸石制造可控性低强度材料的方法
CN106396436A (zh) * 2015-07-28 2017-02-15 武汉科技大学 一种将钢渣水洗尘泥改质成水泥熟料的方法
US10457601B2 (en) 2017-02-24 2019-10-29 CR Minerals Company, LLC Settable compositions comprising remediated fly ash (RFA) and methods of cementing in subterranean formations
US10829414B2 (en) 2017-02-24 2020-11-10 CR Minerals Company, LLC Settable compositions comprising remediated fly ash (RFA) and methods of cementing in subterranean formations
US10822442B2 (en) 2017-07-17 2020-11-03 Ecolab Usa Inc. Rheology-modifying agents for slurries

Also Published As

Publication number Publication date
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