ULVA. Analisa Pengaruh Limbah Fly Ash Dan Battom Ash (Faba) Sebagai Pengganti Semen Dan Agregat Halus Terhadap Kuat Tekan Beton. Civil Engineering Collaboration, [S. l.], v. 8, n. 2, p. 21–26, 2023. DOI: 10.35134/jcivil.v8i2.60. Disponível em: https://jcivil-upiyptk.org/ojs/index.php/jcivil/article/view/60. Acesso em: 25 jan. 2026.