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Effect of curing temperature on the soil physical and mechanical properties on clay shale geopolymer fly ash stabilization Hartono, Edi; Diana, Willis; Muntohar, Agus Setyo; Azhar, Muhammad; Indriani, Lia
SINERGI Vol 29, No 1 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2025.1.005

Abstract

Clay shale is an easily degraded mudrock when exposed to weathering. The reduced strength due to degradation can be mitigated through soil stabilization. In recent years, soil stabilization using geopolymers has become one of the latest popular methods due to its economic benefits and lower carbon footprint. A widely used cementitious material for this method is fly ash-based geopolymer. The relationship between curing temperatures and the performance of clay shale stabilized with fly ash-based geopolymer has yet to be studied for the purpose of identifying a more effective stabilization method. In this study, clay shale was stabilized using geopolymer. The geopolymer was made of fly ash and an activator. Sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) as activators. The activator is diluted with water to create a 12 M mixture. Before the unconfined compressive strength test, the specimens were subjected to various curing temperatures from 26oC to 60oC. The test result shows that, in general, higher curing temperatures increased the dry density from 1.66 g/cm3 to 1.84 g/cm3. Meanwhile, the unconfined compressive strength multiplies about 3.5 times. Furthermore, the moisture content decreased after the curing process from 19% to 2.5%. This led to the specimen volume experiencing decrement due to the shrinkage during the curing period. The volume reduces from 67.7 cm3 to 63.5 cm3. In general, temperature plays a significant role in enhancing the strength of clay shale stabilized using fly ash-based geopolymer.
PENGARUH DISIPLIN KERJA, MOTIVASI, DAN IKLIM KERJA TERHADAP KINERJA GURU DI SMK NEGERI X PEKANBARU Indriani, Lia; Machasin; Tarigan, Mida Aprilina
JURNAL ILMU MANAJEMEN DAN KEWIRAUSAHAAN (JIMK) Vol 5 No 2 (2024): Desember
Publisher : Program Studi Manajemen Fakultas Ekonomi dan Bisnis, Universitas Muslim Nusantara Al-Washliyah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32696/jimk.v5i2.3881

Abstract

This study aims to see the Influence of Work Discipline, Motivation, and Work Climate on Teacher Performance at SMK Negeri X Pekanbaru. The population in this study were all civil servant teachers at SMK Negeri X Pekanbaru. The sampling technique used was saturated sampling, which is a sampling technique when all members of the population are used as samples. The sample used was 46 civil servant teachers at SMK Negeri X Pekanbaru. The data analysis method used was multiple linear regression analysis using the SPSS Version 26 program. The results of the study showed that 1) work discipline had a positive and significant effect on teacher performance, 2) motivation had a positive and significant effect on teacher performance, 3) work climate had a positive and significant effect on teacher performance, 4) work discipline, motivation, and work climate together had a positive and significant effect on teacher performance.
ANALYSIS OF THE APPLICATION OF THE TALAQQI METHOD IN IMPROVING SHORT HADITH MEMORIZATION IN EARLY CHILDHOOD Wahyuni, Akhtim; Indriani, Lia; Rahmawati, Erlinda Nur
Journal of Learning on History and Social Sciences Vol. 2 No. 12 (2025): Journal of Learning on History and Social Sciences
Publisher : PT. Antis International Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61796/jlhss.v2i12.1583

Abstract

Objective: This research aims to analyze the effectiveness of applying the Talaqqi method in improving hadith memorization in early childhood and determine the supporting and inhibiting factors in its application. Method: The Talaqqi method is a method that can be used to memorize hadith by imitating the teacher's reading. Results: This research shows that the application of the Talaqqi method is effective in improving the ability to memorize hadiths in young children. The results of this research show that the Talaqqi method has advantages such as improving the quality of memorization and making it easier for children to memorize hadiths. Novelty: However, in this research, it was also found that teachers faced difficulties in implementing the Talaqqi method, namely the lack of parental attention to providing reinforcement of hadiths that had been memorized at school.