US1808762A - Method of accelerating the hardening of plastic materials - Google Patents

Method of accelerating the hardening of plastic materials Download PDF

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Publication number
US1808762A
US1808762A US444863A US44486330A US1808762A US 1808762 A US1808762 A US 1808762A US 444863 A US444863 A US 444863A US 44486330 A US44486330 A US 44486330A US 1808762 A US1808762 A US 1808762A
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US
United States
Prior art keywords
hardening
mass
accelerating
plastic materials
temperature
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 - Lifetime
Application number
US444863A
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English (en)
Inventor
Brund Albert
Bohlin Helge
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Individual
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Individual
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Publication date
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Application granted granted Critical
Publication of US1808762A publication Critical patent/US1808762A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • B28B11/242—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening by passing an electric current through wires, rods or reinforcing members incorporated in the article
    • 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
    • C04B40/02—Selection of the hardening environment
    • C04B40/0204—Selection of the hardening environment making use of electric or wave energy or particle radiation
    • C04B40/0209—Electric, magnetic or electromagnetic fields
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/43—Processes of curing clay and concrete 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/46—Molding using an electrical heat
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S65/00—Glass manufacturing
    • Y10S65/04—Electric heat

Definitions

  • Themain objects of this invention are to provide an improved method of accelerating the hardening of concrete, mortar and similar coalescent material; and to provide an improved method of this kind which will require only a very small amount of apparatus.
  • Our improved method primarily consists in passing an electric current, preferably alternating current, through the plastic mass. By reason of the heat generated in the mass by the electric current, the setting is greatly accelerated. As a result of many experiments, we have determined that with this improved method, after the mass' has been-subjected to the electric current for only a few hours, it
  • the concrete orother substance is poured into the mold.
  • the mold mut'be provided with electrodes placed in any suitable position within the mass. If the concrete is provided with the customary metal reinforcing bars, such bars may be used as the electrodes.
  • S ilbstantiallythe only apparatus which is necessary to carry out this improvedprocess comprises a transformer, conductors, and electrodes, which are much cheaper to acquire and maintain than the boilers, pipe systems, steam chambers, etc., used in other methods.
  • the consumption of electricity in carrying outzthis method is between thirty and fifty Kwh. per cubic meter of mass. If'desired the molds may be heat insulated and also covered to prevent evaporation of the water.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Electron Sources, Ion Sources (AREA)
US444863A 1928-04-05 1930-04-16 Method of accelerating the hardening of plastic materials Expired - Lifetime US1808762A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1808762X 1928-04-05

Publications (1)

Publication Number Publication Date
US1808762A true US1808762A (en) 1931-06-09

Family

ID=7744194

Family Applications (1)

Application Number Title Priority Date Filing Date
US444863A Expired - Lifetime US1808762A (en) 1928-04-05 1930-04-16 Method of accelerating the hardening of plastic materials

Country Status (2)

Country Link
US (1) US1808762A (en:Method)
SE (1) SE74535C1 (en:Method)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485742A (en) * 1948-03-03 1949-10-25 Jr Benjamin M King Process for molding cellular products
US2500866A (en) * 1948-03-18 1950-03-14 Stark Brick Company Method for making concrete articles
US2522298A (en) * 1948-07-06 1950-09-12 Stark Brick Company Casting of refractory articles
US2683916A (en) * 1952-05-23 1954-07-20 Joseph C Kelly Method of accelerating the hardening of concrete slabs
US2841856A (en) * 1955-04-28 1958-07-08 Lawrence F Gelbman Electric concrete molding process
US3270102A (en) * 1964-12-23 1966-08-30 Ken Mar Clay Products Ltd Method and apparatus for the production of hardened clay products
US3510547A (en) * 1961-01-20 1970-05-05 Paul Eisler Method of heat treating a body of curable material
US5104594A (en) * 1989-02-02 1992-04-14 Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann Drying the surface of a fresh concrete body
US5252266A (en) * 1992-07-02 1993-10-12 Brabston William N Control of the hardening of binders and cements

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485742A (en) * 1948-03-03 1949-10-25 Jr Benjamin M King Process for molding cellular products
US2500866A (en) * 1948-03-18 1950-03-14 Stark Brick Company Method for making concrete articles
US2522298A (en) * 1948-07-06 1950-09-12 Stark Brick Company Casting of refractory articles
US2683916A (en) * 1952-05-23 1954-07-20 Joseph C Kelly Method of accelerating the hardening of concrete slabs
US2841856A (en) * 1955-04-28 1958-07-08 Lawrence F Gelbman Electric concrete molding process
US3510547A (en) * 1961-01-20 1970-05-05 Paul Eisler Method of heat treating a body of curable material
US3270102A (en) * 1964-12-23 1966-08-30 Ken Mar Clay Products Ltd Method and apparatus for the production of hardened clay products
US5104594A (en) * 1989-02-02 1992-04-14 Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann Drying the surface of a fresh concrete body
US5252266A (en) * 1992-07-02 1993-10-12 Brabston William N Control of the hardening of binders and cements

Also Published As

Publication number Publication date
SE74535C1 (en:Method) 1932-06-14

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