צמנט רגיל צמנט : מסמך זה הוא הצעה בלבד מכון התקנים הישראלי

ועדה 10601EN 197-1:2011 (E)7.2 Physical requirements7.2.1 Initial setting timeThe initial setting time, determined in accordance with EN 196-3, shall conform to the requirements in Table 3.7.2.2 SoundnessThe expansion, determined in accordance with EN 196-3, shall conform to the requirement in Table 3.7.2.3 Heat of hydrationThe heat of hydration of low heat common cements shall not exceed the characteristic value of 270 J/g, determined inaccordance with either EN 196-8 at 7 days or in accordance with EN 196-9 at 41 h.Low heat common cements shall be identified by the notation "LH".NOTE 1 Pre-normative research has demonstrated the equivalence of test results for EN 196-8 at 7 days and EN 196-9 at 41 h.Nevertheless, in case of dispute between laboratories, the method to be applied should be agreed.NOTE 2 Cement with a higher hydration heat value is appropriate for some applications. It is necessary that this value should beagreed upon between manufacturer and user, and that this cement should not be identified as low heat cement (LH).7.3 Chemical requirementsThe properties of the cements of the cement type and strength class shown in columns 3 and 4 respectively of Table 4shall conform to the requirements listed in column 5 of this table when tested in accordance with the standard referredto in column 2.18