CHECKING THE BUCKLING STABILITY OF SECTIONS OF STRUCTURAL LIGHTWEIGHT CONCRETE

KNICKSICHERHEITSNACHWEIS VON BAUTEILEN AUS KONSTRUKTIONS-LEICHTBETON

THE SPECIFICATION FOR THE USE OF STRUCTURAL LIGHTWEIGHT CONCRETE LIMITS LIMITS SLENDERNESS TO LAMBDA = LESS THAN OR EQUAL TO 70, AND ATTEMPTS TO BASE THE DESIGN OF STRUCTURAL LIGHTWEIGHT CONCRETE ELEMENTS UNDER BENDING WITH AXIAL PRESSURE ON THE PRINCIPLES DEVELOPED FOR NORMAL CONCRETE. THIS SOMETIMES LEADS TO UNSATISFACTORY SOLUTIONS. THE GREATER RANGE OF SLENDERNESS IS NOT POSSIBLE IN PRACTICE. THE AIM OF THE PROJECT IS TO DEVELOP DESIGN AIDS FOR SLENDER REINFORCED AND UNREINFORCED STRUCTURAL LIGHTWEIGHT CONCRETE SECTIONS WHICH WOULD ENABLE THEM TO BE USED IN APPROXIMATELY THE SAME AREAS AS NORMAL CONCRETE. THE DESIGN AIDS WOULD BE BASED ON KNOWLEDGE OBTAINED IN RESEARCH CARRIED OUT BY THE INDUSTRIAL RESEARCH ASSOCIATIONS.