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
  • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
  • B28B23/0068—Embedding lost cores
• • 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
  • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
  • B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members

Definitions

• the invention relates to a process for the production of reinforced concrete products Claim 1 and such a concrete product.
• Reinforced concrete products and their manufacture are well known in the art.
• Concrete is an artificial stone made from a mixture of cement, concrete aggregate and Water is formed by hardening the cement paste. If necessary, the concrete Added additives and / or additives.
• the mixture of cement, concrete aggregate and Water is mixed in various equipment and at the construction site or in the concrete plant in introduced the components in their intended position and hardened there. Concrete is a building material the pressure, but no tensile forces can absorb. To absorb the tensile forces is therefore the use of reinforcing steel required.
• For the production of reinforced concrete products is into a mold or form a suitable iron reinforcement, e.g. Mild steel mats or similar, inserted. Then the concrete mixture is poured into the mold and hardens there.
• Concrete products can be prefabricated very well in the concrete plant.
• Reinforced concrete products have, among other things, the benefits of high strength, any Shaping and longevity.
• the disadvantage is the extremely high weight and partly also poor thermal insulation properties, so that when using concrete in house building sometimes additional insulation is needed.
• This goal comes with a procedure for producing reinforced concrete products according to claim 1 and a concrete product achieved according to claim 6.
• this reinforcement is combined with shed the bodies in a mold or formwork with concrete.
• the density of the body out Plastic or foamed plastic is much lower than that of concrete, that is Total weight of the finished concrete product lower than that of a conventional one Concrete product.
• the weight saving depends on the total volume of the used Body off; the more bodies are used and the larger the body, the larger the Weight savings.
• round, preferably spherical bodies are used, the Structure of the concrete product due to the good force redirection around the body only slightly weakened.
• the number and size of, preferably spherical body can be varied depending on the application.
• Reinforcement or reinforcements are preferably mild steel mats or Structural steel wires used. Mild steel mats consist of two intersecting layers of Steel rods, the i.d.R. connected by spot welding.
• the Concrete product can have a variety of different reinforcements, such as. e.g. Reinforcement baskets or trusses, welded mesh or reinforcing frames etc. Not all Reinforcements must be provided with the bodies; some reinforcements can be completely free remain and others only on a partial area or completely be provided with bodies.
• the Body in particular of plastic or foamed plastic are at least one attached to the reinforcements, e.g. by gluing. Another possibility is to provide the reinforcements with fasteners.
• These pins or mandrels are advantageously an integral part of the reinforcements and are made together with the reinforcement. Alternatively, the pins or mandrels also be subsequently welded to the vegetation or the reinforcements.
• the pencils or mandrels are advantageously made of metal, in particular of the same material as the Reinforcement itself.
• the bodies are attached to the pins or mandrels. To this Purpose, the bodies can be provided with appropriate holes in which the pins or Spikes are introduced. Alternatively, the bodies can also without drilling on the pins or thorns are plugged.
• the pins or mandrels can be sharpened advantageous advantage be to facilitate the plugging.
• the body with at least one provided through hole.
• the bars of the reinforcement are made before joining the Rods led to mats through these holes.
• the bodies are on the free sections between the crossing points or at the crossing points, what a very good fixation of the body causes.
• the number of bodies as needed selectable, e.g. between each crossing point one or more bodies be provided or only between every second or third crossing point, Etc.
• the bodies are advantageous to the reinforcement or the reinforcements of each other spaced apart. This makes it possible for the largely liquid concrete the body completely enclosing, so that the space remaining between the bodies fills out Concrete still has sufficient carrying properties. Thus it is despite a relative high number of bodies of particular plastic or foamed plastic possible, to obtain a relatively strong and durable concrete product.
• the rounds, preferably spherical bodies may advantageously be hollow to a particularly high To achieve weight savings. Under "round” can in this context also forms be understood, e.g. ellipsoidal or egg-shaped, but in the best case spherical and therefore a good diversion of the lines of force in the surrounding concrete at Allow exposure to the designed compressive stress.
• At round Training form is a diameter of 2 to 20 cm advantageous. It is also important that the Body are relatively inexpensive and easy to produce.
• the foamed plastics must have a certain mechanical strength to withstand the pressure of them during casting to withstand surrounding concrete. Particularly suitable for this purpose Rigid foams of e.g. Polystyrene, i. Styrofoam®, polyurethane, polyvinyl chloride and like.
• the invention is particularly advantageous in the production of precast concrete elements such as. Use precast concrete slabs.

Landscapes

• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Chemical & Material Sciences (AREA)
• Ceramic Engineering (AREA)
• Mechanical Engineering (AREA)
• Moulds, Cores, Or Mandrels (AREA)
• Producing Shaped Articles From Materials (AREA)
• Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=34428593

Family Applications (1)

Country Status (2)

Family Cites Families (6)

• 2003
  • 2003-11-07 DE DE2003151982 patent/DE10351982A1/de not_active Ceased
• 2004
  • 2004-11-08 EP EP04026458A patent/EP1529616A3/fr not_active Withdrawn

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