摘要:
A method of producing a plurality of metal-reinforced panels in a molding box (10) having a cavity defined by a bottom wall (16), two side walls (14,15) and two front walls (12, 13); a number of reinforcing metal elements (17, 18) is arranged in the cavity with partitioning means between adjacent elements (17, 18); a flowable and hardenable material, such as a concrete mix, is fed into the cavity and is allowed to harden therein to form the metal-reinforced panels; the reinforcing metal elements (17, 18) each have a generally stratiform biplanar structure (100) and are formed of at least two distanced metal sheets (101, 102) maintained in a substantially parallel and mutually supporting arrangement. Preferably, this method is carried out in a tiltable molding apparatus (7) having a molding box (71) and at least one fluid-cushion (78) capable of varying its outer shape (V,. V 2 , V 3 ) in response to varying the amount of fluid within the cushion (78); the cushion (78) rests on a support surface (77) and is connected with molding box (71) for a tilting movement (F, Z, E) of molding box (71) by variation of the amount of fluid within the cushion (78).
摘要:
A method of producing a plurality of metal-reinforced panels in a molding box (10) having a cavity defined by a bottom wall (16), two side walls (14,15) and two front walls (12, 13); a number of reinforcing metal elements (17, 18) is arranged in the cavity with partitioning means between adjacent elements (17, 18); a flowable and hardenable material, such as a concrete mix, is fed into the cavity and is allowed to harden therein to form the metal-reinforced panels; the reinforcing metal elements (17, 18) each have a generally stratiform biplanar structure (100) and are formed of at least two distanced metal sheets (101, 102) maintained in a substantially parallel and mutually supporting arrangement. Preferably, this method is carried out in a tiltable molding apparatus (7) having a molding box (71) and at least one fluid-cushion (78) capable of varying its outer shape (V,. V 2 , V 3 ) in response to varying the amount of fluid within the cushion (78); the cushion (78) rests on a support surface (77) and is connected with molding box (71) for a tilting movement (F, Z, E) of molding box (71) by variation of the amount of fluid within the cushion (78).
摘要:
In order to increase the rigidity and reduce the shrinkage in a building and construction material, especially concrete to be processed, the finest-grain components of
摘要:
In order to increase the rigidity and reduce the shrinkage in a building and construction material, especially concrete to be processed, the finest-grain components of
摘要:
Um mittels eines Bau- oder Konstruktionswerkstoffes Formkörper oder Konstruktionselemente mit stark erhöhter Festigkeit herstellen zu können, wird vorgeschlagen, den Werkstoff mit einer weitgehendst gleichmässig verteilten feinstporigen Struktur bzw. einer microzellularen Struktur zu versehen. Die Feinstporen weisen dabei vorzugsweise einen Durchmesser im Bereich von ca. 0,01µ bis ca. 5µ auf und sind in sich geschlossen. Der Werkstoff umfasst dabei ein Reaktivbindemittel bzw. einen Reaktivmatrix-Werkstoff, wobei es sich beispielsweise um eine Zement/Wassermischung handeln kann oder aber auch um ein Kunstharz, wie Polyurethan, Epoxidharz und dergleichen.
摘要:
An expanded mineral material suitable for use as a filler, e.g. instead of or in addition to sand or gravel in concrete mixes, is produced by dropping a stream of solid pellets into a rising stream of heated gas contained in a substantially vertical reactor space; the pellets consist essentially of a fusible mineral composition and a latent blowing agent; while falling in counter-current to the gas stream the pellets are heated progressively and expand at least to the point where they are capable to float in the gas stream and are carried in concurrent motion with the gas stream out of the reactor space. This reversal of motion of the expanding particles provides for a substantially self-regulating residence period of the particles in the expansion zone resulting in substantially improved process control and economy. An apparatus (1, 2) for carrying out this process is disclosed.