Article Per Year (5 Year)
p-Index From 2021 - 2026
0.61
P-Index
This Author published in this journals
All Journal BANGUN REKAPRIMA Prawara: Jurnal Pendidikan Bahasa dan Sastra Indonesia
Diah Wulansari Hudaya, Diah Wulansari
Unknown Affiliation
Arts Humanities Civil Engineering, Building, Construction & Architecture Education Engineering Languange, Linguistic, Communication & Media Social Sciences Other

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : bangun rekaprima

 1 
EVALUASI KUAT TEKAN BETON DENGAN VARIASI SUBSTITUSI ABU BATU SEBAGAI UPAYA PEMANFAATAN LIMBAH MATERIAL: EVALUASI KUAT TEKAN BETON DENGAN VARIASI SUBSTITUSI ABU BATU SEBAGAI UPAYA PEMANFAATAN LIMBAH MATERIAL Larassati, Dian Sukma; Setiawan, Adi; Wiguna, Edo; Hudaya, Diah Wulansari; Imansyah, Salmaa R. N; Purwanto; Yuono, Sukma Setyo
Bangun Rekaprima Vol. 11 No. 2 (2025): Oktober 2025
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v11i2.7235

Abstract

Infrastructure development in Indonesia is growing rapidly, necessitating economical and environmentally friendly building materials. Concrete is a key construction material, but the cement-making process produces significant carbon emissions. To reduce environmental impacts, one method is to use industrial waste, such as rock ash, as a substitute for sand in concrete mixes. This study aimed to examine the effect of rock ash use on the compressive strength of K-225 quality concrete after 28 days. Five mixtures were tested with ratios of rock ash ranging from 0% to 100% replacing sand. The results showed that none of the mixtures achieved the desired compressive strength of 225 kg/cm². However, the mixture with 50% rock ash provided the best compressive strength of 194.385 kg/cm² with the lowest standard deviation (8.648 kg/cm²), indicating consistent quality. The decrease in compressive strength at higher rock ash levels was due to the presence of fine particles and silt exceeding the maximum limit. The study concluded that fly ash can be used as a sand substitute up to 50% of the time, provided its quality meets technical standards. The use of fly ash can help save costs, conserve natural resources, and support sustainable development.
ANALISIS PENCAHAYAAN BUATAN DI RUANG KELAS LANTAI 2 GEDUNG SEKOLAH C (SC) POLITEKNIK NEGERI SEMARANG: ANALISIS PENCAHAYAAN BUATAN DI RUANG KELAS LANTAI 2 GEDUNG SEKOLAH C (SC) POLITEKNIK NEGERI SEMARANG Setiawan, Adi; Suwarto; Sudarmono; Santosa, Stefanus; Setyono, Karnawan Joko; Wiguna, Edo; Larassati, Dian Sukma; Imansyah, Salmaa R.N; Hudaya, Diah Wulansari
Bangun Rekaprima Vol. 12 No. 1 (2026): April 2026
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v12i1.7510

Abstract

Adequate lighting is crucial for supporting comfortable and effective classroom learning. This study evaluated the artificial lighting levels in a second-floor classroom on the C Building of Semarang State Polytechnic using a digital luxmeter. The research method used was to measure artificial lighting locally and generally. The final measurement results were compared to SNI 03-6575-2001, which requires a minimum value of 350 lux for classrooms. The measurements showed that most points had lighting values ​​below 200 lux, indicating that the lighting did not meet the standard. The low lighting levels were caused by several malfunctioning lamps and uneven light distribution due to suboptimal fixture layout and room reflectance. These findings indicate the need for lighting system improvements to enhance visual comfort and support the learning process.
Co-Authors G. Gunawan Imansyah, Salmaa R. N Imansyah, Salmaa R.N Larassati, Dian Sukma Prihatmini, Eri Purwanto Setyono, Karnawan Joko Stefanus Santosa Sudarmono Sukamto, Ika Sumiyarsi Suwarto Suwarto Vebriyanto, Danu Angga Wiguna, Edo Yuono, Sukma Setyo