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All Journal Bharasumba Jurnal Multidispliner PARADIGM : JOURNAL OF MULTIDISCIPLINARY RESEARCH AND INNOVATION
anaser, Novadri
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PENGARUH PENAMBAHAN FLY ASH TERHADAP KUALITAS SEMEN DI PT SEMEN BATURAJA TBK Maghpiroh, Ana; Iskandar, Damayanti; anaser, Novadri; Tohir, Safaruddin
Jurnal Multidisipliner Bharasumba Vol 2 No 04 (2023): Jurnal Multidisipliner Bharasumba
Publisher : Pusat Studi Ekonomi, Publikasi Ilmiah dan Pengembangan SDM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/bharasumba.v2i04.806

Abstract

Fly Ash or fly ash is solid waste produced from burning coal in power plants. Fly Ash was previously obtained from the simple production of burning coal with a gas funnel and dispersed into the atmosphere. The use of Fly Ash on OPC type cement was carried out in this test with varying percentages of 2%, 4%, 6%, 8%, 10%, 12%, 14%. The test was carried out by adding an additive (Fly Ash) to the basic material for making OPC cement. Next, testing the chemical composition properties of Fly Ash using Xray, testing the physical properties of cement, namely testing the compressive strength resulting from molding the mortar and testing the setting time. Meanwhile, testing the chemical properties of cement was carried out using IR (insoluble residue) and SO3. From the results of this research, it was found that the addition of Fly Ash had a positive impact on 7 day compressive strength, setting time and SO3. The addition of Fly Ash from low to high percentages can increase the fineness of the cement so that it affects the setting time and compressive strength of the cement. From this research it was found that the addition of additives (Fly Ash) can improve the quality of OPC cement and in general it is not much different from the physical properties of PCC cement.
PENGARUH PENAMBAHAN DOSIS CEMENT GRINDING AID (CGA) TERHADAP SETTING TIME DAN KUAT TEKAN MORTAR PADA SEMEN PCC DI PT. SEMEN BATURAJA TBK Sunarsih, Tri; Marzuki, Hasan; Anaser, Novadri; Safaruddin, Safaruddin
PARADIGM : Journal Of Multidisciplinary Research and Innovation Vol 2 No 02 (2024): PARADIGM : Journal Of Multidisciplinary Research and Innovation
Publisher : Pusat Studi Ekonomi Publikasi Ilmiah dan Pengembangan SDM Azramedia indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62668/paradigm.v2i02.1192

Abstract

Cement Grinding Aid (CGA) appears as an addition that has the potential to affect the characteristics of the mortar in PCC cement. The purpose of this study is to optimize the formulation of PCC cement from CGA-MBS and CGA-MAPEI types against the Setting Time and mortar compressive strength. In this study, a physical test method was used, namely the setting time and mortar compressive strength test. From the results of the study, the setting time test is faster for the CGA-MAPEI type because it increases the smoothness of the cement, while the CGA-MBS type has a chemical composition content that more affects its properties as a more stable and resistant adhesive. In the mortar compressive strength test, the addition of a dose of CGA (100 – 400) ppm the compressive strength value of CGA-MAPEI mortar is higher than that of GCA-MBS, but in the addition of a dose of 500 ppm, the compressive strength value of CGA-MAPEI is still below the compressive strength value of CGA-MBS.
Co-Authors Damayanti Iskandar Maghpiroh, Ana Marzuki, Hasan Safaruddin Safaruddin Tohir, Safaruddin Tri Sunarsih