TY - JOUR AU - Ranti Hidayawanti, AU - Supriadi Legino, AU - Iriansyah Sangadji, AU - Rony Panca Adi Widodo, PY - 2019/01/10 Y2 - 2024/03/28 TI - THE EFFICIENCY OF FLY ASH AND CEMENT SLAG TO DEVELOPMENT BUILDING JF - GEOMATE Journal JA - INTERNATIONAL JOURNAL OF GEOMATE VL - 16 IS - 57 SE - Articles DO - UR - https://geomatejournal.com/geomate/article/view/2838 SP - 95-100 AB - <p>In world construction, the construction of high-rise buildings almost entirely uses concrete. This <br>study uses fly ash and cement slag as a cement substitute as a reduction in cement requirements. This is due to <br>the limited amount of cement in the market and the binding function of cement and the increasing cement <br>prices. The use of fly ash and cement slag is toxic hazardous waste material that must be handled so that it can <br>be used properly. From the results of the age strength of concrete 1-3 days, the compressive strength of fly ash <br>is higher than that of cement slag but from a mixture of 28 days, it reaches 100% in accordance with the <br>specified standard. In this laboratory test for the use of fly ash and slag cement, 50%, in the future it is necessary <br>to research that the use of fly ash and slag cement can be up to 70% so that the use of fly ash material and <br>cement slag can replace the function of concrete mixed cement as a binder of coarse and fine material to get <br>concrete compressive strength with specified standards. Production costs can be minimized so that if this <br>applied can avoid the company from potential billions/year losses.</p> ER -