THE INFLUENCE OF BASALT MINERALS AS CEMENT SUBSTITUTION MATERIALS IN MORTAR

Autor: Muhammad Amin, David Candra Birawidha, Kusno Isnugroho, Yusup Hendronursito, Slamet Sumardi, Septa Ario, Syafriadi Syafriadi, Muhammad Al-Muttaqii
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Acta Polytechnica, Vol 59, Iss 6, Pp 536-542 (2019)
Druh dokumentu: article
ISSN: 1210-2709
1805-2363
DOI: 10.14311/AP.2019.59.0536
Popis: This study was conducted to determine the effect of the concentration of basalt as a cement substitution material in mortar. Basalt was analysed by XRD and XRF. From the XRD results, the diffractogram shows the dominant phases, such as anorthite, augite, forsterite, and quartz or silicon oxide. SiO2, Al2O3, Fe2O3 are the main components in basalt, as can be seen from the XRF. With the concentration at 5% of the basalt before the calcination, the optimum compressive strength of the OPC and PCC cement mortar was obtained. The highest compressive strength of the OPC cement mortar was 24.97MPa with a porosity of 2.4% and absorption of 1.29 %. Furthermore, the highest compressive strength of the PCC cement mortar was 22.55MPa with a porosity of 4.8% and absorption of 2.52 %. This result indicates that the substitution of composite cement with a basalt with a concentration of 5% can increase the compressive strength of the mortar.
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