#TITLE_ALTERNATIVE#

• Main Author: MURDONO (NIM : 13703010); Dosen Pembimbing : Dr. Ir. Aditianto Ramelan, FERRYANDY
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/15683
• Institution: Institut Teknologi Bandung

Fly ash is the waste product of coal burning. Every year the amount is increased continuously and has reached 55,000 tons per year. With the large amount of this waste it may cause an environmental hazard. Hence utilizing this waste should be taken into a serious consideration. Many types of fly ash have been used as the main ingredient to produce bricks (FlashBrick) and cements. The need of building <br /> <br /> <br /> <br /> <br /> materials such as bricks and cements have been increased lately hence researches on the usage of fly ash is still a relevant issue. <br /> <br /> <br /> <br /> <br /> The fly ash and clay used in this study is obtained from the Material and Ceramic Research Center in Bandung (Balai Besar Bahan dan Penelitian Keramik) and is classified as type C2f. For observing the utilization of brick making, two composition were used which are 100% fly ash (FA) and 90% fly ash with 10% clay addition (FA1). The sample was made through dry pressing process, sintered up to 970 oC for 15.5 hours and then undergone compressive test. The firing temperature was determined following the heating microscope result which shown a softening behavior at 975 oC. The strength obtained for FA and FA1 samples are subsequently 8,79 ± 0,41 MPa, and 9,32 ± 0,19 MPa. From previous observation a type F fly ash brick has a fired strength up to 271,96 ± 52,50 MPa which is quiet high for such building material (Ihsan, 2001). To see the possibility for making cement from this type of fly ash a Bogue equation was used for calculating of possible Portland Cement phases. <br /> <br /> <br /> <br /> <br /> The result is that the cement consist of 27,48% C3A and this did not conform to the ASTM C150 which stated that the allowable C3A should be 15% maximum. Hence from those observations the utilization for either brick or cement making purposes is not feasible but further research should be carried out for having more understanding on this C2f fly ash behaviour especially for making a useful building <br /> <br /> <br /> <br /> <br /> materials.