Fly Ash Utilization Analysis as A Substitute of Cement in Cement Treated Base (CTB)

Abstract

Cement Treated Base (CTB) is a pavement layer located between the sub-base and surface layers. This pavement layer uses fine aggregate (sand) and cement as a binder. Fly ash is coal burning waste that can be used as an added material for road pavement. This study aimed to analyze the use of fly ash in the cement treated base pavement mixture. Fly ash was used as a substitute of cement. The composition used consists of fine aggregate (sand), cement, fly ash and water. The compressive strength test was carried out on variations in the composition of the test object. The requirements for CTB specifications were to have compressive strength test results ranging between 45 kg/cm2 – 55 kg/cm2 at the age of the test object for 7 days. After being tested, it was found that the composition of 70% fine aggregate (sand), 5% Portland cement, and 25% fly ash had an average compressive strength of 49.823 kg/cm2.

Analisis Pengaruh Bahan Campuran Terhadap Kekuatan Lapis Pondasi Agregat Semen (LPAS) Kelas A dengan Fly Ash (Abu Terbang)

“…Penelitian ini menggunakan metode Taguchi. Metode Taguchi merupakan metode perancangan yang berprinsip pada perbaikan mutu dengan memperkecil akibat dari variansi tanpa menghilangkan penyebabnya (Soejanto, 2009). Hal ini dapat diperoleh melalui optimasi produk dan perancangan proses untuk membuat unjuk kerja kebal terhadap berbagai penyebab variasi suatu proses yang disebut perancangan parameter (Wahjudi et al, 2001).…”

Stabilization of Liang Anggang Sand With Fly Ash and Cement as Subgrade Improvement Materials

“…Fly ash can be used as a filler for paved mixtures for surface layers [2]. The use of fly ash as a cement substitution material on the asphalt cement foundation layer can also be done and meet the required specifications [3]. Stabilized clay soils using fly ash can be used as a subgrade layer in road construction.…”