ES458593A1 - Process for the manufacture of shaped products from calcium sulphate dihydrate - Google Patents

Process for the manufacture of shaped products from calcium sulphate dihydrate

Info

Publication number
ES458593A1
ES458593A1 ES458593A ES458593A ES458593A1 ES 458593 A1 ES458593 A1 ES 458593A1 ES 458593 A ES458593 A ES 458593A ES 458593 A ES458593 A ES 458593A ES 458593 A1 ES458593 A1 ES 458593A1
Authority
ES
Spain
Prior art keywords
sand
cement
shaped products
compressed
manufacture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES458593A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stamicarbon BV
Original Assignee
Stamicarbon BV
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 Stamicarbon BV filed Critical Stamicarbon BV
Publication of ES458593A1 publication Critical patent/ES458593A1/en
Expired legal-status Critical Current

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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Abstract

An improved procedure for manufacturing shaped products from dihydrated calcium sulfate, cement and sand, in which CaSO4.2H2O is compressed in the presence of cement, sand and water, characterized in that a. sand content is selected to be up to 40% by weight based on dry CaSO4.2H2O; b. the cement content is selected to be 8 to 15% by weight based on the combined weight of said CaSO4.2H2O and said sand and c. the water content is selected so as to be between 5 and 25% by weight based on the total components, the said composition of CaSO4.2H2O, sand, cement and water being compressed, after homogenization at a pressure of 5 to 40 Mpa, after which the compressed composition is left to condition for at least one day at a relative humidity of 80 to 100% (Machine-translation by Google Translate, not legally binding)
ES458593A 1976-05-08 1977-05-07 Process for the manufacture of shaped products from calcium sulphate dihydrate Expired ES458593A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7604948A NL7604948A (en) 1976-05-08 1976-05-08 PROCESS FOR MANUFACTURING FORMINGS FROM CALCIUM SULPHATE DIHYDRATE.

Publications (1)

Publication Number Publication Date
ES458593A1 true ES458593A1 (en) 1978-12-01

Family

ID=19826153

Family Applications (1)

Application Number Title Priority Date Filing Date
ES458593A Expired ES458593A1 (en) 1976-05-08 1977-05-07 Process for the manufacture of shaped products from calcium sulphate dihydrate

Country Status (13)

Country Link
JP (1) JPS52141835A (en)
BE (1) BE854355A (en)
BR (1) BR7702957A (en)
CA (1) CA1090377A (en)
DE (1) DE2720463A1 (en)
ES (1) ES458593A1 (en)
FR (1) FR2350312A1 (en)
GB (1) GB1568884A (en)
IT (1) IT1079014B (en)
LU (1) LU77273A1 (en)
NL (1) NL7604948A (en)
OA (1) OA05799A (en)
ZA (1) ZA772739B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3117436A1 (en) * 1981-05-02 1982-11-11 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Gunning compounds for consolidating freshly cut rock, preferably for mining galleries
JP2596994B2 (en) * 1988-12-06 1997-04-02 三菱重工業株式会社 Method for producing hardened gypsum
US6241815B1 (en) * 1999-08-10 2001-06-05 United States Gypsum Company Gypsum-cement system for construction materials

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE818747C (en) * 1948-10-02 1951-10-29 Metallgesellschaft Ag Processing of superphosphate sludge into building elements
NL7410706A (en) * 1974-08-09 1976-02-11 Unie Van Kunstmestfab Bv PROCESS FOR MANUFACTURING FORMINGS FROM GIPS.
NL7414904A (en) * 1974-11-15 1976-05-18 Unie Van Kunstmestfab Bv Gypsum mouldings e.g. building blocks - by mixing moist uncalcined calcium sulphate dihydrate with cement and moisture, pressing and drying

Also Published As

Publication number Publication date
NL7604948A (en) 1977-11-10
BR7702957A (en) 1978-01-10
BE854355A (en) 1977-11-07
CA1090377A (en) 1980-11-25
IT1079014B (en) 1985-05-08
LU77273A1 (en) 1977-08-24
JPS52141835A (en) 1977-11-26
DE2720463A1 (en) 1977-11-24
ZA772739B (en) 1978-03-29
OA05799A (en) 1981-05-31
GB1568884A (en) 1980-06-11
FR2350312A1 (en) 1977-12-02

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