Nehme, KingaShanto, Md Saif Samad2026-06-112026-06-112026-05-18https://hdl.handle.net/2437/409362The establishment of environmental protection by means of durable structures is really an important factor in contemporary constructions. This thesis attempts to examine the optimization of concrete mixes to obtain a durable & eco-friendly concrete mixture in each Exposure Class. In this research, I tested 8 different mixes using 3 binders types based on EN 197-1:Danucem CEM II/A-LL 42.5 R (Portland limestone); DDC CEM II/B-S 42.5 N (slag cement, 21-35% slag) & DDC CEM II/A-S 42.5 N (slag cement, 6-20% slag) with 3 different water/cement ratio (0.4,0.45 & 0.5). Optimization of aggregate skeleton & inclusion of rock flour for improving the density of matrix are other critical aspects of this research. As part of this process, by adopting a superior aggregate skeleton (fine aggregate 46%, medium aggregate 18% & coarse aggregate 36%) & obtaining Fineness Modulus of 6.18, I attained a Class-1 (Ideal) grading curve . Also, by the inclusion of limestone filler in some mixes, an effect called Micro Filler Effect has been generated in the concrete that is actually physically dense enough to block water from penetrating into it & that helped to meet the high standards of the XV3 durability class. Based on the experimental results, it is evident that these improvements greatly contribute to the improved mechanical & fresh properties; Mix 2 reached the highest compressive strength of 81.12 N/mm² & SCC mixes exhibited excellent fluidity & reached a maximum spread of 795 mm. More importantly, the dense matrix obtained the lowest value of water permeability at just 6.0 mm. According to microscopic observation, lowering the water/cement ratio to 0.45 breaks down the continuity of the capillary porosity matrix & hence that makes the matrix more dense & may increase the estimated service life from 15 to more than 80 years.138en-USHigh-Performance ConcreteCEM II BindersAggregate OptimizationMicro Filler EffectXV3 DurabilityService Life PredictionMűszaki tudományok::MélyépítészetHozzáférhető a 2022 decemberi felsőoktatási törvénymódosítás értelmében.