3. International Conference on Civil and Environmental Engineering, (ICOCEE – Çeşme 2018), İzmir, Türkiye, 24 - 27 Nisan 2018, cilt.1, ss.619
The microwave curing method
increases the strength gaining of mortars and concrete at early ages due to the
accelerated hydration reactions of the cement. The early age strength values
obtained from microwave cured cementitious composites can be associated with
the strength values at later ages. Thus, it is possible to estimate the
strength of the concrete at the later ages. In this
study, two different types of cement, two
different types of plasticizer admixtures and F-type fly ash were used for
specimen production. The compressive strength tests were carried out after a
portion of the prepared mortar specimens had been exposed to microwave
accelerated curing while the rest of them had been cured in water for 7 days as
well as 28 days. Any linear relationship determined between the compressive
strengths of the plasticizer added specimens, and also the 7 and 28-day
compressive strengths were evaluated and thereby, estimation of the 7 and
28-day day compressive strengths of the specimens were aimed. Taking the reliability levels and margins of error into
account, it was observed that the microwave accelerated curing method yielded
more reliable results especially in terms of estimating the compressive
strengths in polycarboxylate added mortar specimens.