Investigation into the properties of reinforced microconcrete for accurate structural modelling

Oriola, Folagbade Olusoga (1989) Investigation into the properties of reinforced microconcrete for accurate structural modelling. University of Southampton, Doctoral Thesis.

Abstract

The object of this investigation was to develop model materials which minimised size effects in small scale reinforced concrete models. Dimensional Analysis was used to develop the general dynamic similarity conditions for elastic models. These conditions were then used as a basis to develop accurate similarity conditions for realistic reinforced microconcrete models. Using these new equations as a basis, design curves for producing microconcrete with properties similar to those of prototype concrete of a similar compressive strength were developed with the aid of trial mixes. Similarly, reinforcing rods which have similar characteristics to prototype ribbed bars were also developed. The performance of materials developed was checked by failure study tests on microconcrete model beams and was shown to be good. There was close agreement of the test results with theoretical full-scale concrete prediction methods. These materials were also used to check the accuracy of the shearing strength equations and the reinforcement details which were developed for halving joints which failed in the shear-splitting mode.

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