This paper describes a test programme aimed at establishing for aggregate concrete blocks the characteristic compressive strength of single leaf masonry made with voided blocks and solid blocks laid flat and also with solid blocks laid in collar jointed construction. Proposals are made for incorporating the results in the National Application Document for DD ENV 1996-1-1, Eurocode 6 and the revision to BS 5628: Part 1.
It is shown that the compressive strength of blocks laid flat can be readily found from conventional compressive strength tests carried out with blocks laid on their bed face, i.e. normal aspect tests. The paper also compares the compressive strength of units prepared and conditioned by the ground/air dry method and the capped/saturated method given in prEN 772-1.
M. E. Phipps, BScTech, PhD, CEng, MICE, MIStructE
Professor of Structural Masonry Department of Civil and Structural Engineering, UMIST, Manchester
S. A. Mirza, BSc, MSc
Research Assistant, Department of Civil and Structural Engineering, UMIST, Manchester
A. J. Bell, BEng, MSc, PhD
Senior Lecturer, Department of Civil and Structural Engineering, UMIST, Manchester
G. J. L. Pettit, Standards Manager, Tarmac Topblock M. Ormesher, Technical Manager, Forticrete N. G. Lewis, Technical Manager, RMC Concrete Products