#TITLE_ALTERNATIVE#

• Main Author: BUDIANTO (NIM : 13705039); Pembimbing Utama : Dr. Ir. Aditianto Ramelan, ANDRE
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/14883
• Institution: Institut Teknologi Bandung

Concrete brick is an important element in construction to withstand a high mechanical load. <br /> <br /> <br /> <br /> <br /> Somehow, the construction cost in the usage of concrete brick is higher than traditional brick. <br /> <br /> <br /> <br /> <br /> Indonesian National Standard (SNI) regulates that minimum compressive strength of the concrete is <br /> <br /> <br /> <br /> <br /> 2.5 MPa (B 25). High cost of construction anticipated in this experiment by adding some additives <br /> <br /> <br /> <br /> <br /> to reduce the amount of cement used in the construction. Additives studied in this experiment are <br /> <br /> <br /> <br /> <br /> trass and CaCO3 <br /> <br /> <br /> <br /> <br /> In this experiment, some specimens prepared from Portland Cement Composite (PCC) that using <br /> <br /> <br /> <br /> <br /> trass or CaCO3. The compositions of trass or CaCO3 used in this experiment are 10w/o, 20w/o and <br /> <br /> <br /> <br /> <br /> 30w/o. Curing process conducted in this experiment is water curing in 7, 14 and 21 days. <br /> <br /> <br /> <br /> <br /> Compression test according to ASTM C39 conducted in this experiment is to find the compressive <br /> <br /> <br /> <br /> <br /> strength for certain compositions. The characterization employed in this experiment is using XRD to <br /> <br /> <br /> <br /> <br /> determine the existence of trass and PCC in concrete brick. <br /> <br /> <br /> <br /> <br /> The result of this experiment is the higher amount of trass will reduce compressive strength <br /> <br /> <br /> <br /> <br /> from 25.81 MPa (0w/o) to 7.94 MPa (30w/o). However, CaCO3 addition gave the optimum <br /> <br /> <br /> <br /> <br /> compressive strength at 10w/o with 7.46 MPa. Both mixture compositions still have the compressive <br /> <br /> <br /> <br /> <br /> strength above SNI B 25 standard. Therefore, both additives can be used as complementary <br /> <br /> <br /> <br /> <br /> substance to reduce the amount of cement in purpose to minimize the construction cost.