Document Archives

Lap Joints of Welded Mesh Fabric in Lightweight Concrete Structures

• ID:

  595

• ESCSI:

  4251.032

• Author:

  Rehm, Gallas; Tewes, Ruediger

• Publication Name:

  Deutsch Ausschuss Stahlbeton

• Type of Publication:

  Journal

• Publisher:

  Universitaet Stuttgart, Germany

• Dated:

  1986

• Issue/Volume:

  No. 367

• Other ID:

• Page(s):

  65-84

• Reference List:

  Y

• Abstract:

  The results of eight tests with lap joints of welded mesh fabric are reported which aimed at extending the experiences of the former programs for normal concrete slabs – reported in this same issue and in N/SUP/O 291 of the “Schriftenreihe des Deutschen Ausschusses fuer Stahlbeton” – to the area of reinforced lightweight concrete. In order to evaluate quantitatively the bearing capacity of lightweight concrete lap joints, some tests were carried out for a direct comparison with the results of identical tests in normal concrete. Further tests aimed at the evaluation of the influences of high concrete strength, the position of reinforcement during concreting and the bearing behavior of joints of fabric with large cross-section areas (cm/SUP/2/m), lapped in a second, inner layer. The tests are described and the results discussed. A proposition for the design of lap joints of welded mesh fabric in lightweight concrete is derived, which provides – for predominantly static loads – satisfying serviceability and safety against sudden failure. These propositions became part of DIN 4219 (German code for reinforced lightweight concrete). In German.