This document presents a proposed method for designing high-strength concrete mixes containing silica fume. The method aims to determine mix proportions that achieve compressive strengths between 41-90 MPa, with maximum aggregate sizes of 14-25 mm and silica fume replacements of 5-15% by weight of cement. The method involves fixing the cementitious material at 520 kg/m3 and determining initial superplasticizer dosages, water-cement ratios, and aggregate contents needed to achieve the target strengths through a series of trial mixtures. Forty-five initial trials were used to establish superplasticizer dosages, followed by additional trials to refine the relationships between water-cement ratio, aggregate size and amount, and achieved compress