خصائص قوة الكتل الخرسانية
المهندس محمود زهران هندسة المباني التعليمية EDUCATIONAL ...
🔸 Types of cement 🔸️ Ten types of cement can be produced to use each type for a certain function and one of the most important types of cement: 1 Ordinary Portland Cement Type I: It is the most common and widespread, used in all structures that are not exposed to salts of the salts in soil or groundwater. 2 Portland Cement Fast Hard or Early Strength Type II: And gives the resistance ......