Method for casting hollow core slabs

Abstract

A method for producing hollow-core slabs substantially with a horizontal slipforming process, the concrete mix to be cast being fed in said method through a limited cross section to form a product with a desired form, whereby the areal weight of the hollow-core slab to be cast is changed by changing the width of the hollow core of the hollow-core slab and/or by casting a part of the hollow-cores to be solid.

1 . A method for producing hollow-core slabs substantially with a horizontal slipforming process, the concrete mix to be cast being fed in said method through a limited cross section to form a product with a desired form, wherein the areal weight of the hollow-core slab to be cast is changed by changing the width of the hollow core of the hollow-core slab and/or by casting a part of the hollow-cores to be solid.  
     
     
         2 . A method according to  claim 1 , wherein the height of the hollow core of the product to be cast is kept substantially constant.  
     
     
         3 . A method according to  claim 1 , wherein the width of the hollow core is changed by changing the hollow-core forming element of the casting apparatus to be used.  
     
     
         4 . A method according to  claim 1 , wherein the casting of a hollow core to be solid is provided by removing the hollow-core forming element from the casting apparatus to be used.  
     
     
         5 . A method according to  claim 1 , wherein the width of at least one of the hollow cores of a hollow-core slab to be cast differs from the width of the rest of the hollow-cores.  
     
     
         6 . A method according to  claim 2 , wherein the width of the hollow core is changed by changing the hollow-core forming element of the casting apparatus to be used.  
     
     
         7 . A method according to  claim 2 , wherein the casting of a hollow core to be solid is provided by removing the hollow-core forming element from the casting apparatus to be used.  
     
     
         8 . A method according to  claim 3 , wherein the casting of a hollow core to be solid is provided by removing the hollow-core forming element from the casting apparatus to be used.  
     
     
         9 . A method according to  claim 6 , wherein the casting of a hollow core to be solid is provided by removing the hollow-core forming element from the casting apparatus to be used.  
     
     
         10 . A method according to  claim 2 , wherein the width of at least one of the hollow cores of a hollow-core slab to be cast differs from the width of the rest of the hollow-cores.  
     
     
         11 . A method according to  claim 3 , wherein the width of at least one of the hollow cores of a hollow-core slab to be cast differs from the width of the rest of the hollow-cores.  
     
     
         12 . A method according to  claim 4 , wherein the width of at least one of the hollow cores of a hollow-core slab to be cast differs from the width of the rest of the hollow-cores.  
     
     
         13 . A method according to  claim 6 , wherein the width of at least one of the hollow cores of a hollow-core slab to be cast differs from the width of the rest of the hollow-cores.  
     
     
         14 . A method according to  claim 7 , wherein the width of at least one of the hollow cores of a hollow-core slab to be cast differs from the width of the rest of the hollow-cores.  
     
     
         15 . A method according to  claim 8 , wherein the width of at least one of the hollow cores of a hollow-core slab to be cast differs from the width of the rest of the hollow-cores.  
     
     
         16 . A method according to  claim 9 , wherein the width of at least one of the hollow cores of a hollow-core slab to be cast differs from the width of the rest of the hollow-cores.