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CONCRETE TECHNOLOGY60 CPI %u2013 Concrete Plant International %u2013 4 | 2025 www.cpi-worldwide.comMacro-synthetic fibre-reinforced concrete (MSFRC) is gaining traction as a durable and sustainable alternative to traditional steel reinforcement. This article outlines a European software-based design approach using CivilMapei, enabling engineers to model and verify MSFRC structures in line with Eurocode and national standards. With a focus on practical applications, material characterization and structural performance, the article shows how MSFRC supports efficient, corrosion-free solutions across precast and industrial sectors.1. Designing durable concrete with macrosynthetic fibres: a software-based methodThe integration of macro-synthetic fibre-reinforced concrete (MSFRC) into structural applications is gaining momentum due to its advantages in durability, constructability and sustainability. Mapei introduces a design methodology supported by CivilMapei %u2013 a structural design software which enables engineers to incorporate MSFRC effectively, particularly in precast and industrial applications. CivilMapei facilitates compliance with Eurocode 2(1) and national Standards by implementing advanced models for residual strength, crack control and early-age checks. Its use streamlines the design process, allowing for optimized reinforcement strategies and reliable structural performance.Over the past decade, macro-synthetic fibres have emerged as a credible alternative to steel reinforcement in both structural and non-structural concrete elements. Their use addresses key durability concerns, particularly corrosion, and offers practical benefits such as reduced labour, improved safety and lower environmental impact. However, structural use of MSFRC requires rigorous design verification, especially at ultimate and serviceability limit states. This paper presents a software-based approach that aids engineers in adopting MSFRC while ensuring code compliance and structural reliability.2. Motivation for using macro-synthetic fibresSteel corrosion remains a primary limitation to the longevity of reinforced concrete structures. Macro-synthetic fibres offer a corrosion-free reinforcement system with effective post-cracking behaviour, particularly beneficial in aggressive environments or where reduced maintenance is critical. Benefits include:%u2022 Elimination of corrosion-related deterioration%u2022 Reduced embodied carbon compared with traditional steel%u2022 Simplified handling and placement.Applications in precast elements further benefit from the consistent fibre distribution and the possibility of reducing or eliminating conventional bar reinforcement, particularly in serviceability-driven scenarios. Design using MSFRC must address minimum ductility requirements and ensure sufficient post-crack tensile resistance, especially when load redistribution or accidental actions are expected. These requirements demand appropriate modelling tools to simulate residual tensile capacity under flexure and shear.3. Software-based design frameworkCivilMapei implements the design principles outlined in the fib Model Code (2) as well as in national Codes and Annexes, ensuring compliance with evolving international Standards for fibre-reinforced concrete.CivilMapei builds on over 25 years of validated modules originally created for bridge and civil infrastructure design. These modules have been extended to incorporate the contribution of macro-synthetic fibres in flexure, shear and crack control. The software is available free of charge to all Mapei clients and collaborators to promote the adoption of advanced MSFRC solutions in structural applications.CivilMapei supports design using MSFRC by automating key verifications required by international and national standards. It includes dedicated modules for:%u2022 sectional analysis (e.g., beams, walls, tanks)%u2022 2D plate analysis (e.g., slabs, panels)%u2022 industrial pavement design (per TR34(3).Designing durable concrete with macro-synthetic fibres: A European software-based approachMapei S.p.A., Milano, Italyn Dr. Jos%u00e9 Mar%u00eda Vaquero and Dr. Carles Cots, Mapei