Browsing by Author "Muhammad Shahzaib Safdar"

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    Void fraction on the properties of self compacting mortar system (scm)
    (2022) Muhammad Shahzaib Safdar; Muhammad Aman; Uphaz Fazal; Daniyal Maqsood
    The behavior of SCC is affected and changed by the size, distribution and percentage of the voids, the porosity of the aggregate and powder phases. As a matter of fact, it is important for engineers to consider in detail particle packing concepts and their influence on the physical performance of concrete in both fresh and hardened states. In this study the grading and packing of all aggregate phases and powder phases was studied in terms of fine to coarse aggregate percentage and corresponding void ratio with the aim to find typical range of aggregate phase percentage and corresponding percent voids. Local Sargodha coarse aggregates passing from sieve no ¾”and retaining on sieve no ½” and Chenab River fine aggregates retaining on sieve no 30, having their void fraction of loose condition (fine/course) is more than the void fraction of compacted condition (fine/course). All the sand/gravel mixes attain the minimum void fraction of Sand/gravel (mass) ratio 0/60 to 60/40 (both loose and compacted conduction). Optimization of the composition of the aggregate material in concrete is beneficial with respect to economy (low cement content), strength and durability. Based on the result it is analyzed that which combination of sand/gravel results in lowest paste content. The validation of H.J.H. Brouwers *, H.J. Radix paper in our experimental work is satisfactorily