6. The main ingredient of Portland Cement are:
Explained The compositions of portlend cement is, lime (64.64%), Silica (21.28%), Alumina (5.60%); Iron- oxider (3.36%), Magnesia (2.06%) Sulpher Trioxide (2.14%); N₂O (0.05%); loss of Ignition (0.64%); lime saturation water (0.92%) The arrangement made to support an unsafe structure temporarily as; উত্তর সহ কয়েকটি অনুরুপ গুরুত্বপূর্ণ প্রশ্ন 1. The main ingredients of Portland cement are Lime & Silica. 2. Portland cement এ CaO এর পরিমাণ- 63%. 3. Portland cement এ SiO2 এর পরিমাণ -22%, 4. Portland cement এ Al₂O3 =7%, Fe2O3= 3%, MgO=2%, SO3= 2%, Alkalies =1%.