ABSTRACT
Radical Concrete Technology. Edited by R K Dhir and P C Hewlett. Published in 1996 by E & FN Spon, 2-6 Boundary Row, London SE1 8HN, UK. ISBN 0 419 21480 1. ABSTRACT. For better use of reinforced concrete it is necessary to study experimentally the real state of structures during assembly and service. The design of constructions and their members is based on an idealized and simplified pattern of stress, strain and force distribution, quite a bit of which in practice works out otherwise. The actual structural behaviour may, to a marked degree, differ from the rated one. Multiple reserves, sometimes also a near-collapse condition may exist. The determination of the technical resources and the reliability of structures, the verification of their actual state need examination of structures on site. Development of concrete oriented specific measuring means and test methods has become a vital necessity and the aim of the activity of the Estonian Building Research Institute. Three microprocessor complexes BCM, BPM and BTM have been developed for testing and direct measuring of strength, stress, and strain state in concrete structures. A new “negentropic prediction method for the determination of the serviceability of concrete structures” is proposed. Keywords: Concrete, Strength, Stress, Strain, Measurement, Testing, In situ, Reliability, Method. Olav Sammal, D.Ph., is Head of the Building Test Department, Estonian Building Research Institute, Estonia. He is specialized in the development of the new concrete oriented test methods and measuring devices BCM, BPM and BTM and using them in situ in building service. He is the author of the “impact-pulse (magnetoelastic) method” and the “negentropic prediction method” for the determination of the serviceability of concrete structures. He is individual member of I.A.B.S.E.
