Akademik Veri Yönetim Sistemi
4. Int. Conf. on Civil Environmental, Geology and Mining Engineering (ICOCEM- 2019), Trabzon, Türkiye, 20 - 22 Nisan 2019, cilt.1, ss.51-65
Durability in a reinforced concrete structure depends not only on the
environment class inside the structure but also on the compression of the
concrete and the water/cement ratio. One of the most important developments in
ready-mixed concrete technology over the past 40 years is the presence of
superplasticizer additives. When we look at today, such additives is one of the
basic elements of the ready-mixed concrete industry. The aim of the plasticizer
additive science is to provide low water/cement ratio and long workability at
the same time. In this study, domestic and foreign studies on the advances of
plasticizer additive technology in recent years have been reviewed. Among this
research following topics were mentioned; plasticizer additive and cement
adaptation, mechanism of plasticizer additives, types and purpose of use. In
addition, recent experimental studies on the plasticizer additive were included
in the last chapter. In the meantime, the number of vehicles is increasing all
over the world and this leads to the increase production of used engine oil
(UEO). It was found that addition of UEO to concrete was similar to adding
plasticizer admixture to concrete. The results show that the used motor oil
added to the concrete resulted in a positive increase in compressive strength,
tensile strength and ductility of the concrete. Thus UEO is a good alternative
for SP and thereby solving the problems of higher cost of SP and efficient
utilization of hazardous waste like UEO which causes severe environmental
issues. In addition, some researchers have investigated the effect of different
amounts of plasticizer admixtures on concrete hydration heat as a new study.
Especially in high dosage, large reinforced concrete applications release high
amount of heat by the hydration reaction of cement.