Beneficial Use of Fly-Ash through Soil Stabilization and Portland Cement Concrete Mix

Adam Kaplan, Kennesaw State University
M. A. Karim, Kennesaw State University
Youngguk Seo, Kennesaw State University

Description

Beneficial Use of Fly-Ash through Soil Stabilization and Portland Cement Concrete Mix Authors Dr. Adam Kaplan - United States - Kennesaw State University Dr. M. A. Karim - United States - Kennesaw State University Dr. Youngguk Seo - United States - Kennesaw State University Abstract A study was conducted to investigate the effect of fly-ash (FA) on soil stabilization and on partial replacement of fine aggregate (sand) and cement in Portland Cement Concrete (PCC). Only FA Type F was used in soil stabilization experiments with varied percentages of FA contents and unconfined compression strength tests were conducted for several curing periods. Both Types of FA (Type C and Type F) were used in the PCC study to partially replace sand and cement with varied percentages. Concrete cylinders were cast and cured in water for 7, 14, 28 days and slumps were measured during the casting to understand workability and compressive strength and electrical resistivity were measured to understand the strength and durability of the PCC. For soil stabilization, a fly ash content range of 32–50% was optimum that would perform better as subgrade materials for a curing period of 16–19 days. For PCC study, FA Type C content of 5, 10, 15 and 20% for fine aggregate replacement and 10, 20, and 30% for cement replacement provided strengths at least equal or more than that of the controls for all curing periods. Similar trends were also observed for the FA Type F.

 
May 14th, 2:00 PM May 14th, 2:30 PM

Beneficial Use of Fly-Ash through Soil Stabilization and Portland Cement Concrete Mix

Grand Rapids, Michigan

Beneficial Use of Fly-Ash through Soil Stabilization and Portland Cement Concrete Mix Authors Dr. Adam Kaplan - United States - Kennesaw State University Dr. M. A. Karim - United States - Kennesaw State University Dr. Youngguk Seo - United States - Kennesaw State University Abstract A study was conducted to investigate the effect of fly-ash (FA) on soil stabilization and on partial replacement of fine aggregate (sand) and cement in Portland Cement Concrete (PCC). Only FA Type F was used in soil stabilization experiments with varied percentages of FA contents and unconfined compression strength tests were conducted for several curing periods. Both Types of FA (Type C and Type F) were used in the PCC study to partially replace sand and cement with varied percentages. Concrete cylinders were cast and cured in water for 7, 14, 28 days and slumps were measured during the casting to understand workability and compressive strength and electrical resistivity were measured to understand the strength and durability of the PCC. For soil stabilization, a fly ash content range of 32–50% was optimum that would perform better as subgrade materials for a curing period of 16–19 days. For PCC study, FA Type C content of 5, 10, 15 and 20% for fine aggregate replacement and 10, 20, and 30% for cement replacement provided strengths at least equal or more than that of the controls for all curing periods. Similar trends were also observed for the FA Type F.