WO2000024690A1 - Improved cement composition - Google Patents

Improved cement composition Download PDF

Info

Publication number
WO2000024690A1
WO2000024690A1 PCT/BE1999/000130 BE9900130W WO0024690A1 WO 2000024690 A1 WO2000024690 A1 WO 2000024690A1 BE 9900130 W BE9900130 W BE 9900130W WO 0024690 A1 WO0024690 A1 WO 0024690A1
Authority
WO
WIPO (PCT)
Prior art keywords
acid
wouastonite
cement composition
composition according
phosphate cement
Prior art date
Application number
PCT/BE1999/000130
Other languages
French (fr)
Inventor
Xiao Wu
Junn Gu
Original Assignee
Vrije Universiteit Brussel
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 Vrije Universiteit Brussel filed Critical Vrije Universiteit Brussel
Priority to AU10203/00A priority Critical patent/AU1020300A/en
Publication of WO2000024690A1 publication Critical patent/WO2000024690A1/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
    • 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
    • C04B28/34—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 cold phosphate binders
    • 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
    • C04B14/043—Alkaline-earth metal silicates, e.g. wollastonite

Definitions

  • the present invention concerns the field of cement, and relates particularly to phosphate cements.
  • the aim of the treatment is to have a good opacity properties and low abrasiveness resistance, so that the final product, i.e., acid treated woUastonite, can be used as a pigment for paper industry (column 1, line 41-53).
  • the treated woUastonite called surface-pacified woUastonite in US2, may be used as an inert filler, or in the composition of US3.
  • the aim of treating the woUastonite by the acid is to have a "reaction uniformity" of the woUastonite (column 1, line 19-27), so that the reaction, presumably the quick-setting process of the US3, will not be influenced by the different batches and grades of raw material.
  • Example 4 of US2 shows a setting time of 1 hour, which is considered as quick-setting in an industrial process.
  • Example 2 of US2 was tested to examine its setting process, and the result shows that it has a setting time of less than 10 minutes at 20°C (Table 3).
  • Wl our previous invention, discloses a composition comprising an acid metal phosphate solution, a woUastonite compound and an oxy-boron compound as setting retarder.
  • This composition discloses a technique to reduce reactivity of the composition by the setting retarder which results in a long pot life.
  • the Wl composition may provide a long pot life. However, its setting will take long time as well at 20 °C because the reactivity of the composition is significantly reduced by the retarder. High temperature curing may be used to accelerate the setting, but there are times when high temperatures are not suitable.
  • the Invention disclosed herein relates to a phosphate cement composition, its method of preparation and resulting products formed therefrom.
  • Some particular objectives of the Invention are: (1) to reduce pH value of the woUastonite by a treatment so that reactivity of the said component A can be fundamentally reduced, resulting in further extended pot life; and (2) to provide a technique so that setting of the composition become obtainable whenever it is required.
  • a phosphate cement composition which comprises, in combination, a component A and a component B wherein the component A comprises an acid-treated woUastonite compound, an acid aqueous solution of metal phosphate, and a setting retarder; and component B comprises a setting accelerator.
  • the metal phosphate is selected from the group consisting of: aluminium phosphates, zirconium phosphates, magnesium phosphates, zinc phosphates, calcium phosphates, iron phosphates, including derivatives and mixtures thereof.
  • the setting retarder may be selected from the group consisting of boric acid, alkali metal and, alkaline-earth metal salts of boric acid, amine and ammonium salts of boric acid, including hydrates and mixtures thereof.
  • the setting retarder may be selected from the group consisting of: boric acid, sodium borate, ammonium borate, calcium borate, including hydrates and mixtures thereof.
  • Preferably said setting retarder is added as a powder or a liquid.
  • Suitable accelerators are be known in the art; one is MgO.
  • the woUastonite of the said acid-treated woUastonite compound may be a natural or synthetic woUastonite, in calcined or non-calcined state, or a combination thereof.
  • the acid-treated woUastonite has preferably has a pH value of 6-8 a measured using a woUastonite 10 % water slurry.
  • the said acid used to treat the woUastonite may be an inorganic acid.
  • the acid used to treat the woUastonite may be sulphuric acid, phosphoric acid, carbonate acid, acetate acid, or a combination thereof.
  • the said acid may be sulphuric acid, phosphoric acid, carbonate acid, acetate acid, boric acid, or a combination thereof.
  • the said acid preferably has a normality of O.03 - 0.05.
  • composition A forming the composition into a shape
  • composition C adding composition C to set the cement in the shape
  • the component A has a sufficiently long pot life, while the component B can be added to component at any moment during the pot life to form the cement which sets in relative short period so that a shaped body can be fully cured and produced at circa 20 °C by the Invention.
  • controlling the setting time is realised using a setting accelerator.
  • this setting accelerator is added to the Invention composition A at any moment during the pot life, a setting mechanism is induced immediately which causes setting and full curing of the Invention composition at ambient temperature condition in a relatively short period.
  • the Invention is fundamentally different frown the Wl (Table 1) in the particular woUastonite employed and presence of the setting accelerator. This significantly improves industrial applicability of the technology.
  • the composition of the Invention is evidently different not only in the presence of setting retarder and a setting accelerator, but also in the particular woUastonite employed.
  • the presence of silica gel indicates that woUastonite structure is attacked during the treatment.
  • the Invention has novelty, inventive step and industrial applicability with regard to its composition, method of treating the woUastonite and the resulting products formed from the cement.

Abstract

The present invention concerns the field of cement, and relates particularly to phosphate cements. According to one aspect of the present invention there is provided a phosphate cement composition which comprises, in combination, a component A and a component B wherein the component A comprises an acid-treated wollastonite compound, an acid aqueous solution of metal phosphate, and a setting retarder; and component B comprises a setting accelerator.

Description

IMPROVED CEMENT COMPOSITION
The present invention concerns the field of cement, and relates particularly to phosphate cements.
Following abbreviations will be used throughout the text:
US1 = US Patent 3,642,511
US2 = US Patent 4,956,321 US3 = US Patent 4,375,516
Wl = WO 97/19033
Invention = newly developed inventio .
Background information
US1 discloses a method to treat woUastonite by acid, say sulphuric acid and phosphoric acid, to a degree of pH <= 4.0. The aim of the treatment is to have a good opacity properties and low abrasiveness resistance, so that the final product, i.e., acid treated woUastonite, can be used as a pigment for paper industry (column 1, line 41-53).
US2 discloses a method to treat woUastonite by acid, say sulphuric acid, carbonate acid and acetate acid, to a degree that the treated woUastonite has a pH=9-10. The treated woUastonite, called surface-pacified woUastonite in US2, may be used as an inert filler, or in the composition of US3. The aim of treating the woUastonite by the acid is to have a "reaction uniformity" of the woUastonite (column 1, line 19-27), so that the reaction, presumably the quick-setting process of the US3, will not be influenced by the different batches and grades of raw material. As a result, the treated woUastonite has a pH=9-10, which is not fundamentally different from that of the untreated woUastonite of pH=9-10.7 (column 2, line 34-39). This is an indication that US2 seeks to keep the reactivity of the US3 composition. As an evidence, Example 4 of US2 shows a setting time of 1 hour, which is considered as quick-setting in an industrial process. We have tested the Example 2 of US2 to examine its setting process, and the result shows that it has a setting time of less than 10 minutes at 20°C (Table 3).
Wl, our previous invention, discloses a composition comprising an acid metal phosphate solution, a woUastonite compound and an oxy-boron compound as setting retarder. This composition discloses a technique to reduce reactivity of the composition by the setting retarder which results in a long pot life. The woUastonite used in the Wl is an untreated woUastonite having a pH = 9-12. The Wl composition may provide a long pot life. However, its setting will take long time as well at 20 °C because the reactivity of the composition is significantly reduced by the retarder. High temperature curing may be used to accelerate the setting, but there are times when high temperatures are not suitable.
There is a pressing need to develop a technique to accelerate setting reaction of a composition according to Wl, using means other than increased curing temperature, so that a shaped body can be fully cured and obtained in a relatively short period.
It is an object of the present invention to provide a composition which fulfils the above need.
Description of the Invention
The Invention disclosed herein relates to a phosphate cement composition, its method of preparation and resulting products formed therefrom.
Some particular objectives of the Invention are: (1) to reduce pH value of the woUastonite by a treatment so that reactivity of the said component A can be fundamentally reduced, resulting in further extended pot life; and (2) to provide a technique so that setting of the composition become obtainable whenever it is required.
According to one aspect of the present invention there is provided a phosphate cement composition which comprises, in combination, a component A and a component B wherein the component A comprises an acid-treated woUastonite compound, an acid aqueous solution of metal phosphate, and a setting retarder; and component B comprises a setting accelerator.
Preferably the metal phosphate is selected from the group consisting of: aluminium phosphates, zirconium phosphates, magnesium phosphates, zinc phosphates, calcium phosphates, iron phosphates, including derivatives and mixtures thereof.
The setting retarder may be selected from the group consisting of boric acid, alkali metal and, alkaline-earth metal salts of boric acid, amine and ammonium salts of boric acid, including hydrates and mixtures thereof.
The setting retarder may be selected from the group consisting of: boric acid, sodium borate, ammonium borate, calcium borate, including hydrates and mixtures thereof. Preferably said setting retarder is added as a powder or a liquid. Suitable accelerators are be known in the art; one is MgO.
The woUastonite of the said acid-treated woUastonite compound may be a natural or synthetic woUastonite, in calcined or non-calcined state, or a combination thereof.
The acid-treated woUastonite has preferably has a pH value of 6-8 a measured using a woUastonite 10 % water slurry.
The said acid used to treat the woUastonite may be an inorganic acid. For example, the acid used to treat the woUastonite may be sulphuric acid, phosphoric acid, carbonate acid, acetate acid, or a combination thereof.
According of another aspect of the invention there is provided a method of producing acid-treated woUastonite for a cement composition comprising: (1) mixing woUastonite with an inorganic acid aqueous solution in a concentration and quantity sufficient to form an acid/wollastonite mixture having a pH=6-8; and (2) drying the mixture after its pH value becomes stable.
The said acid may be sulphuric acid, phosphoric acid, carbonate acid, acetate acid, boric acid, or a combination thereof. The said acid preferably has a normality of O.03 - 0.05.
According to yet another aspect of the invention there is provided a shaped product formed from cement as hereinbefore described.
According to yet a further aspect of the invention there is provided a shaped product containing the acid treated woUastonite as hereinbefore described.
According to yet another aspect of the invention there is provided a method of making a solid shaped article comprising: providing composition A, forming the composition into a shape, and adding composition C to set the cement in the shape.
In general, the component A has a sufficiently long pot life, while the component B can be added to component at any moment during the pot life to form the cement which sets in relative short period so that a shaped body can be fully cured and produced at circa 20 °C by the Invention.
In general, reducing reactivity of the composition A of the Invention is achieved by treating the woUastonite with acid, to a degree that the treated woUastonite has a pH = 6-8 in woUastonite 10 % water slurry (this method of pH measurement will be used hereafter). When this treated woUastonite of pH = 6-8 meets acid metal phosphate solution, it reacts much slower than that of untreated woUastonite having a pH = 9-12. This results in a more extended pot life for the component A, even compared to that of Wl.
On the other hand, controlling the setting time is realised using a setting accelerator. When this setting accelerator is added to the Invention composition A at any moment during the pot life, a setting mechanism is induced immediately which causes setting and full curing of the Invention composition at ambient temperature condition in a relatively short period.
These techniques have never been developed prior to this Invention, specially for the accelerator. This is because the phosphate cement using woUastonite as primary material has always been known as a quick-setting cement (with the exception of that disclosed in Wl) so no setting accelerator has ever been considered necessary.
Following is a description of some comparative tests illustrating the effectiveness of the compositions of the present invention.
Composition
With respect to composition, the Invention is fundamentally different frown the Wl (Table 1) in the particular woUastonite employed and presence of the setting accelerator. This significantly improves industrial applicability of the technology.
Compared to US2, the composition of the Invention is evidently different not only in the presence of setting retarder and a setting accelerator, but also in the particular woUastonite employed. The Invention woUastonite is a mixture of a calcium salt of the particular acid used in the treatment (calcium sulphate, for instance), a silica gel and an un-reacted woUastonite, characterised by pH = 6-8. The presence of silica gel indicates that woUastonite structure is attacked during the treatment. While the US2 woUastonite is only surface-pacified with a surface-displaceable anion without altering crystal structure, and having a pH = 9-10 (column 3, line 30-38). These therefore are two different materials, to be used for different applications.
Table 1 Composition difference
Figure imgf000011_0001
Setting process
Because of the difference in material composition, setting process of the Invention, US2 and Wl are consequently different, as summarised in the Table 2.
Table 2 Difference in the setting process
Figure imgf000012_0001
*Controllable quick setting in the sense that the setting can be realised by adding setting accelerator.
Comparative tests
Comparative tests has been made, using compositions of the Invention, Wl and US2 to verify their setting process (Table 3). The woUastonite used in the test is very reactive and has a pH=12. The surface-pacified woUastonite used for US2 is obtained by treating it with sulphuric acid having a normality of 0.01, rinsed with de-ionised water and then dried, as required by the Example 2, US2 (column 3, Example 2). The acid treated woUastonite used in the Invention is a mixture comprising calcium sulphate, silica gel and un-reacted woUastonite obtained by treating it with sulphuric acid having a normality of 0.04 and then dried at 60°C.
Table 3 Pot life at 20°C
Figure imgf000013_0001
(1) phosphate to woUastonite ratio (2) maximum pot life, no setting accelerator is used
(3) aluminium phosphate from US2 Example 2, columns 3-4.
The test results show that when the US2 composition is used, it is always quick-setting together with foaming, independent of the pH value of the woUastonite. It demonstrates that the surface-pacified woUastonite cannot provide long pot life. On the other hand, when the Invention composition is employed, the woUastonite of pH = 7 does reduce reactivity of the component A compared to Wl and the US2, indicated by the dramatic increase of pot life.
Field of Application
The field of application and industrial applicability is summarised in the table 4 .
Table 4 properties and field of application
Field of application Industrial suitability
Invention 1. fibre reinforced much improved over composites l
3. cement
4. adhesive
5. foams
Wl 1. fibre reinforced Yes composites
3. cement
4. adhesive
5. foams
US2 1. foams difficult
2. quick-setting applications In view of the difference in composition, setting process and industrial applicability, the Invention has novelty, inventive step and industrial applicability with regard to its composition, method of treating the woUastonite and the resulting products formed from the cement.

Claims

1. A phosphate cement composition which comprises, in combination, a component A and a component B wherein the component A comprises an acid-treated woUastonite compound, an acid aqueous solution of metal phosphate, and a setting retarder; and component B comprises a setting accelerator.
2. A phosphate cement composition according to claim 1 wherein the metal phosphate is selected from the group consisting of: aluminium phosphates, zirconium phosphates, magnesium phosphates, zinc phosphates, calcium phosphates, iron phosphates, including derivatives and mixtures thereof.
3. A phosphate cement composition according to claim 1 or claim 2 wherein said setting retarder is selected from the group consisting of boric acid, alkali metal and, alkaline-earth metal salts of boric acid, a ine and ammonium salts of boric acid, including hydrates and mixtures thereof .
4. A phosphate cement composition according to claim 3 wherein the setting retarder is selected from the group consisting of: boric acid, sodium borate, ammonium borate, calcium borate, including hydrates and mixtures thereof .
5. A phosphate cement composition according to claim 3 or claim 4 wherein said setting retarder is added as a powder or a liquid.
6. A phosphate cement composition according to claim 1 wherein the woUastonite of the said acid-treated woUastonite compound is a natural or synthetic woUastonite, in calcined or non-calcined state, or a combination thereof .
7. A phosphate cement composition according to claim 1 and claim 6 wherein said acid-treated woUastonite has a pH value of 6-8 a measured using a woUastonite 10 % water slurry.
8. A phosphate cement composition according to claim 1 and claims 6 or 7 wherein the said acid used to treat the woUastonite is an inorganic acid.
9. A phosphate cement composition according to claim 1 and any of claims 6 to 8 wherein the acid used to treat the woUastonite is sulphuric acid, phosphoric acid, carbonate acid, acetate acid, or a combination thereof.
10. A method of producing acid-treated woUastonite for a cement composition comprising: (1) mixing woUastonite with an inorganic acid aqueous solution in a concentration and quantity sufficient to form an acid/wollastonite mixture having a pH=6-8; and (2) drying the mixture after its pH value becomes stable.
11. A method according to claim 10 wherein the said acid is sulphuric acid, phosphoric acid, carbonate acid, acetate acid, boric acid, or a combination thereof.
12. A method according to claim 10 or 11 wherein the said acid has a normality of O.03 - 0.05.
13. A shaped product formed from cement according to any of claims 1-10.
14. A shaped product containing the acid treated woUastonite of claim 11 or 12.
PCT/BE1999/000130 1998-10-23 1999-10-22 Improved cement composition WO2000024690A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU10203/00A AU1020300A (en) 1998-10-23 1999-10-22 Improved cement composition

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9823285.3 1998-10-23
GBGB9823285.3A GB9823285D0 (en) 1998-10-23 1998-10-23 Improved cement composition

Publications (1)

Publication Number Publication Date
WO2000024690A1 true WO2000024690A1 (en) 2000-05-04

Family

ID=10841208

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BE1999/000130 WO2000024690A1 (en) 1998-10-23 1999-10-22 Improved cement composition

Country Status (3)

Country Link
AU (1) AU1020300A (en)
GB (1) GB9823285D0 (en)
WO (1) WO2000024690A1 (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6518212B1 (en) 2000-09-18 2003-02-11 The University Of Chicago Chemically bonded phospho-silicate ceramics
US7491267B2 (en) 2001-08-10 2009-02-17 Ceratech, Inc. Composite materials and methods of making and using such composite materials
US7517402B2 (en) 2001-10-08 2009-04-14 Xexos Ltd. Composition comprising a phosphate binder and its preparation
US7798287B1 (en) 2005-01-20 2010-09-21 Serious Materials, Inc. Acoustical ceiling panels
US7908818B2 (en) 2008-05-08 2011-03-22 Serious Materials, Inc. Methods of manufacturing acoustical sound proofing materials with optimized fracture characteristics
US7909136B2 (en) 2004-11-24 2011-03-22 Serious Materials, Inc. Soundproof assembly
US7921965B1 (en) 2004-10-27 2011-04-12 Serious Materials, Inc. Soundproof assembly and methods for manufacturing same
WO2012064194A1 (en) 2010-11-11 2012-05-18 Delft University Of Technology Hot gas handling device and motorized vehicle comprising the device
US8181738B2 (en) 2007-04-24 2012-05-22 Serious Energy, Inc. Acoustical sound proofing material with improved damping at select frequencies and methods for manufacturing same
US8424251B2 (en) 2007-04-12 2013-04-23 Serious Energy, Inc. Sound Proofing material with improved damping and structural integrity
US8916277B2 (en) 2007-11-16 2014-12-23 Serious Energy, Inc. Low embodied energy wallboards and methods of making same
US9387649B2 (en) 2007-06-28 2016-07-12 Pacific Coast Building Products, Inc. Methods of manufacturing acoustical sound proofing materials with optimized fracture characteristics
US9388568B2 (en) 2007-04-06 2016-07-12 Pacific Coast Building Products, Inc. Acoustical sound proofing material with improved fracture characteristics and methods for manufacturing same
CN106927781A (en) * 2017-04-28 2017-07-07 重庆大学 One kind is with CO2Phosphate cement foam concrete for foamed gas and preparation method thereof
CN107903002A (en) * 2017-11-21 2018-04-13 常州可赛成功塑胶材料有限公司 A kind of preparation method of high-early-strength phosphorus slag based cementitious material
US10174499B1 (en) 2007-05-01 2019-01-08 Pacific Coast Building Products, Inc. Acoustical sound proofing material for architectural retrofit applications and methods for manufacturing same
US11124965B2 (en) 2017-09-26 2021-09-21 Certainteed Gypsum, Inc. Plaster boards having internal layers and methods for making them
US11203864B2 (en) 2017-09-28 2021-12-21 Certainteed Gypsum, Inc. Plaster boards and methods for making them
US11214962B2 (en) 2017-09-30 2022-01-04 Certainteed Gypsum, Inc. Tapered plasterboards and methods for making them
US11753817B2 (en) 2016-12-15 2023-09-12 Certainteed Gypsum, Inc. Plaster boards and methods for making them

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3804651A (en) * 1972-07-21 1974-04-16 Department Of Transportation Lime silico-phosphate cement
US4504555A (en) * 1982-09-07 1985-03-12 Masonite Corporation Composition and process for forming inorganic resins and resulting product
US4956321A (en) * 1988-06-16 1990-09-11 Armstrong World Industries, Inc. Surface pacified wollastonite
WO1996038394A1 (en) * 1995-05-30 1996-12-05 Reslab A/S Curable gypsum-containing composition and method for stabilization of unconsolidated core samples
WO1997019033A1 (en) * 1995-11-17 1997-05-29 Vrije Universiteit Brussel Inorganic resin compositions, their preparation and use thereof
US5773376A (en) * 1994-01-21 1998-06-30 Melcher; Gerhard Process for producing a mainly inorganic foam, and thus produced mass or moulded part

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3804651A (en) * 1972-07-21 1974-04-16 Department Of Transportation Lime silico-phosphate cement
US4504555A (en) * 1982-09-07 1985-03-12 Masonite Corporation Composition and process for forming inorganic resins and resulting product
US4956321A (en) * 1988-06-16 1990-09-11 Armstrong World Industries, Inc. Surface pacified wollastonite
US5773376A (en) * 1994-01-21 1998-06-30 Melcher; Gerhard Process for producing a mainly inorganic foam, and thus produced mass or moulded part
WO1996038394A1 (en) * 1995-05-30 1996-12-05 Reslab A/S Curable gypsum-containing composition and method for stabilization of unconsolidated core samples
WO1997019033A1 (en) * 1995-11-17 1997-05-29 Vrije Universiteit Brussel Inorganic resin compositions, their preparation and use thereof

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6518212B1 (en) 2000-09-18 2003-02-11 The University Of Chicago Chemically bonded phospho-silicate ceramics
US7491267B2 (en) 2001-08-10 2009-02-17 Ceratech, Inc. Composite materials and methods of making and using such composite materials
US7517402B2 (en) 2001-10-08 2009-04-14 Xexos Ltd. Composition comprising a phosphate binder and its preparation
US7736429B2 (en) 2001-10-08 2010-06-15 Xexos Ltd. Composition comprising a phosphate binder and its preparation
US7921965B1 (en) 2004-10-27 2011-04-12 Serious Materials, Inc. Soundproof assembly and methods for manufacturing same
US7909136B2 (en) 2004-11-24 2011-03-22 Serious Materials, Inc. Soundproof assembly
US7798287B1 (en) 2005-01-20 2010-09-21 Serious Materials, Inc. Acoustical ceiling panels
US9388568B2 (en) 2007-04-06 2016-07-12 Pacific Coast Building Products, Inc. Acoustical sound proofing material with improved fracture characteristics and methods for manufacturing same
US10132076B2 (en) 2007-04-06 2018-11-20 Pacific Coast Building Products, Inc. Acoustical sound proofing material with improved fracture characteristics and methods for manufacturing same
US10125492B2 (en) 2007-04-06 2018-11-13 Pacific Coast Building Products, Inc. Acoustical sound proofing material with improved fracture characteristics and methods for manufacturing same
US8424251B2 (en) 2007-04-12 2013-04-23 Serious Energy, Inc. Sound Proofing material with improved damping and structural integrity
US8181738B2 (en) 2007-04-24 2012-05-22 Serious Energy, Inc. Acoustical sound proofing material with improved damping at select frequencies and methods for manufacturing same
US10174499B1 (en) 2007-05-01 2019-01-08 Pacific Coast Building Products, Inc. Acoustical sound proofing material for architectural retrofit applications and methods for manufacturing same
US9387649B2 (en) 2007-06-28 2016-07-12 Pacific Coast Building Products, Inc. Methods of manufacturing acoustical sound proofing materials with optimized fracture characteristics
US8916277B2 (en) 2007-11-16 2014-12-23 Serious Energy, Inc. Low embodied energy wallboards and methods of making same
US7908818B2 (en) 2008-05-08 2011-03-22 Serious Materials, Inc. Methods of manufacturing acoustical sound proofing materials with optimized fracture characteristics
WO2012064194A1 (en) 2010-11-11 2012-05-18 Delft University Of Technology Hot gas handling device and motorized vehicle comprising the device
US11753817B2 (en) 2016-12-15 2023-09-12 Certainteed Gypsum, Inc. Plaster boards and methods for making them
CN106927781A (en) * 2017-04-28 2017-07-07 重庆大学 One kind is with CO2Phosphate cement foam concrete for foamed gas and preparation method thereof
US11124965B2 (en) 2017-09-26 2021-09-21 Certainteed Gypsum, Inc. Plaster boards having internal layers and methods for making them
US11655635B2 (en) 2017-09-26 2023-05-23 Certainteed Gypsum, Inc. Plaster boards having internal layers and methods for making them
US11203864B2 (en) 2017-09-28 2021-12-21 Certainteed Gypsum, Inc. Plaster boards and methods for making them
US11214962B2 (en) 2017-09-30 2022-01-04 Certainteed Gypsum, Inc. Tapered plasterboards and methods for making them
US11976465B2 (en) 2017-09-30 2024-05-07 Certainteed Gypsum, Inc. Tapered plasterboards and methods for making them
CN107903002A (en) * 2017-11-21 2018-04-13 常州可赛成功塑胶材料有限公司 A kind of preparation method of high-early-strength phosphorus slag based cementitious material

Also Published As

Publication number Publication date
AU1020300A (en) 2000-05-15
GB9823285D0 (en) 1998-12-23

Similar Documents

Publication Publication Date Title
WO2000024690A1 (en) Improved cement composition
US4956321A (en) Surface pacified wollastonite
US4352694A (en) Process of producing sorel cement
CA1220794A (en) Liquid solidification accelerators for concrete mixes
US2450952A (en) Phosphate cements
US5164006A (en) Method for preparing acid resistant calcium carbonate pigments
WO1997008248A1 (en) Surface modified calcium carbonate composition and uses therefor
NO314896B1 (en) Process for the preparation of aluminum phosphate, aluminum phosphate as prepared, composition comprising this, and its use in the manufacture of ceramic components and as a binder, curing agent or metal coating agent
US3782991A (en) Aluminum sulfate and calcium sulfate additives for improving the quality of cement,mortar and concrete and method for 0he production of such improved products
EP1992595A1 (en) Process to reduce the amount of Cr (VI) in a cement-containing composition and a composition comprising cement and coated metallic sulphate particles
US2114692A (en) Coating process
CN110128081A (en) A kind of concrete and preparation method thereof
De La Grée et al. The effect of glucose on the hydration kinetics of ordinary Portland cement
HUT61714A (en) Water- and wear-resisting sorel cement composition for bearers and process for producing such bearers
JPH11505204A (en) Method for delaying setting speed of magnesium phosphate cement
KR101155639B1 (en) Friendly Environment Inorganic Adhesive Composition and Manufacturing Method Thereof
JPH0625017B2 (en) Hardener for water glass
IE47357B1 (en) Expansive cement compositions
KR101793660B1 (en) Manufacturing method and composition for a functional surface hardener for concrete
JPS5884163A (en) Inorganic foam and manufacture thereof from phosphoric acid metal tertiary salt
PL163726B1 (en) Method of obtaining cement or cement grout or mortar
US5569323A (en) Inorganic liquid filler compositions for consolidation/sealing of ground formations and building materials
JPH101337A (en) Formation of hardened product of water glass and blast furnace water-crashed granulated, slag, and hardening composition
JPH11246257A (en) Vegetable fiber cement molding and production thereof
US4600437A (en) Inorganic material, a process for producing same and a solidifying method thereof

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref country code: AU

Ref document number: 2000 10203

Kind code of ref document: A

Format of ref document f/p: F

AK Designated states

Kind code of ref document: A1

Designated state(s): AE AL AM AT AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ CZ DE DE DK DK DM EE EE ES FI FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase