C. Gümüşer, A. Şenol,
Volume 12, Issue 2 (4-2014)
Abstract
The total coal and lignite consumption of the thermic power plants in Turkey is approximately 55 million tons and nearly
15 million tons of fly ash is produced. The remarkable increase in the production of fly ash and its disposal in an
environmentally friendly manner is increasingly becoming a matter of global concern. Studies for the utilization of fly ash in
Turkey are necessary to reduce environmental problems and avoid economical loss caused by the disposal of fly ash. Efforts
are underway to improve the use of fly ash in several ways, with the geotechnical utilization also forming an important aspect
of these efforts. An experimental program was undertaken to investigate the effects of Multifilament (MF19average) and
Fibrillated (F19average) polypropylene fiber on the compaction and strength behavior of CH class soil with fly ash in
different proportions. The soil samples were prepared at three different percentages of fiber content (i.e. 0.5%, 1% and 1.5%
by weight of soil) and two different percentages of fly ash (i.e. 10% and 15% by weight of soil). A series of tests were prepared
in optimum moisture content and laboratory unconfined compression strength tests, compaction tests and Atterberg limits test
were carried out. The fiber inclusions increased the strength of the fly ash specimens and changed their brittle behavior into
ductile behavior.