Water sensitivity, denoted as indirect tensile strength ratio (ITSR), is determined according to EN 13108-20, Clause D.3. Water sensitivity is determined by test method after EN 12697-12 at a test temperature of 15°C. The available categories of requirements ITSR are ITSR90, ITSR80, ITSR70, ITSR60, and ITSRNR, where ITSRNR means no requirement.