The Study Of Heating at Temperature 600, 700, 800 oC and Heating Time 90, 120, 150, Minutes for Portland Composite Cement (PCC) Hidration Strength

• Main Author: Fauzan Adzy, Imam
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/42769
• Institution: Institut Teknologi Bandung

One part of the building that has a negative impact due to fire is concrete. Concrete is a composite material consisting of reinforcement and binder. Generally, concrete structures consist of cement, water, fine aggregate, coarse aggregate. Hydrated cement is a binder, while fine aggregate, coarse aggregate and reinforcing steel are reinforcing parts. This research contains and studies the compressive strength, phase changes, and visual observations of the growth of hydrated cracked portland composite (PCC) cement that has been heated at a heating temperature of 600, 700, 800 oC with heating time of 90, 120, 150 minutes. The specimens are in the cubes form withdimensions 5cm x 5cm x 5cm which have been referred to the ASTM C-109 standard. Specimens are made of a mixture of water and cement with a weight ratio of 0.33 water / cement. The specimen is heated after curing at 28 days. Specimens are characterized by using the X-Ray Diffraction (XRD) method. This study also studied the compressive strength of hydrated semen, where compressive testing was carried out 1, 10, 100 days after heating. The results of this study concluded that increasing the heating temperature would reduce the compressive strength value of the specimen. Increasing the heating time will reduce the compressive strength value of the specimen. The highest compressive strength of hydrated cement is 24.5 ± 1.7 MPa whichthe sample with a heating of 600 oC for 90 minutes. The lowest compressive strength of hydrated semen is 7.1 ± 0.6 MPawhich the sample with a heating temperature of 800 oC for 150 minutes.Compressive strength will also decrease when compressive testing is carried out 1, 10, 100 days after heating. The XRD results show that with the increase in heating temperature there will be a decrease in the percentage of the CSH phase which is the main compound providing strength in hydrated cement.