CIRIA C660 provides a rational, calculation-based framework to predict the risk of cracking and design appropriate reinforcement. It moves away from the overly simplistic rules of thumb and introduces a method based on the "Limit State Design" philosophy.
What makes C660 genuinely interesting is its refusal to prescribe a single solution. Instead, it gives you three independent levers to pull, depending on your site constraints: early-age thermal crack control in concrete ciria c660
Several tools incorporate C660 methods:
For decades, engineers relied on rule-of-thumb limits (e.g., "keep the temperature below 70°C") or outdated standards. However, the definitive modern guide is (Early-age thermal crack control in concrete). Published by the Construction Industry Research and Information Association, C660 provides a risk-based, performance-driven methodology for controlling thermal cracking. CIRIA C660 provides a rational