Effect of filler types on physical, mechanical and microstructure of self compacting concrete and Flow-able concrete

Effect of filler types on physical, mechanical and microstructure of self compacting concrete and Flow-able concrete

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The objective of this study is to evaluate the effect of various filler types on the fresh and hardened properties of self-compacting concrete (SCC) and Ringette Pant Cover Flow-able concrete.For this purpose, two groups of fillers were selected.The first group was pozzolanic fillers (silica fume and metakaolin) while the second group was non-pozzolanic fillers (limestone powder, granite dust and marble dust).

Cement contents of 400 kg/m3 and 500 kg/m3 were considered while the used filler material was 7.5%, 10% and 15%.Slump and slump flow, T50, sieve stability and bleeding tests were performed on fresh concrete.

The studied hardened properties included unit weight, voids ACTA-RESVERATROL ratio, porosity, and water absorption and cube compressive strength.In addition, thermo-gravimetric analysis, X-ray diffraction analysis and scanning electronic microscope were performed.The test results showed that filler type and content have significant effect on fresh concrete properties where non-pozzolanic fillers improve segregation and bleeding resistance.

Generally, filler type and content have significant effect on unit weight, water absorption and voids ratio.In addition, non-pozzolanic fillers have insignificant negative effect on concrete compressive strength.Finally, there was a good correlation between fresh concrete properties and hardened concrete properties for SCC and Flow-able concrete.