TY  - JOUR
T1  - Alternatif Gerilim Uygulanan Betonlarda S/Ç Oranının ve Hiperakışkanlaştırıcı Oranının Priz Bitiş Süresi ve Basınç Dayanımına Etkilerinin Araştırılması
TT  - Investigation of the Impacts of W/C Ratio and Hyper Plasticizer Ratio on Final Setting Time and Compressive Strength for the Concretes to which Alternating Current Applied
AU  - Hocaoğlu, İsmail
AU  - Uygunoğlu, Tayfun
PY  - 2019
DA  - December
DO  - 10.2339/politeknik.480915
JF  - Politeknik Dergisi
PB  - Gazi University
WT  - DergiPark
SN  - 2147-9429
SP  - 1045
EP  - 1051
VL  - 22
IS  - 4
LA  - tr
AB  - Bu çalışmada su/çimento oranları0.45, 0.55, 0.65 ve 0.70 olan 300 dozajlı betonlara 80 V AC gerilimuygulanmıştır. S/ç oranları 0.55 olan % 0.5, % 1 ve % 1.5 oranlarındahiperakışkanlaştırıcı konulan betonlar üretilmiştir. Taze haldeki betonlarelektriksel yalıtımlı 10cm x 10cm x 35cm boyutlarındaki kalıplar içerisindeelektrik akımı uygulanmış, ölçümler oda sıcaklığında yapılmıştır. Elektrikakımı uygulanmış ve elektrik akımı uygulanmamış numunelerde iç sıcaklık ölçümüile priz bitiş süresi belirlenmiştir. Alternatif gerilimin, s/ç oranının vehiperakışkanlaştırıcı oranının priz sona erme süresi, 1 günlük basınç dayanımıve 28 günlük basınç dayanımına etkileri araştırılmıştır. Bu araştırmada betonabelirli oranda hiperakışkanlaştırıcı konulması ve alternatif gerilim uygulamasısonucu priz bitiş süresinin kısaltılması amaçlanmıştır. Betonlara az miktarda(% 0.5) hiperakışkanlaştırıcı konulması ve 80 V AC gerilim uygulaması ile ciddibasınç dayanım kaybı yaşanmadan priz süresinin kısaltılabileceğibelirlenmiştir.
KW  - Alternatif gerilim
KW  - beton
KW  - priz bitiş süresi
N2  - In this study,80 V AC current is applied to 300 dosaged concretes whose water/cement ratiosare 0.45, 0.55, 0.65 and 0.70. Admixtures having different hyper plasticizerratios (0.5 %, 1 % and 1.5 %) and admixtures having constant water/cement ratio(0.55) at 300 dosaged levels were prepared. Electrical current was applied tothe fresh concretes in the electrically isolated molds whose sizes are 10cm x10cm x 35cm. The measurements were done at room temperature. As a result ofmeasuring internal temperatures of concretes, the differences between finalsetting time with and without electric current application on the specimenswere investigated. The effects of Alternating Current (AC), water/cement ratio,hyper plasticizer ratio on final setting time, 1 day compressive strength and28 day compressive strength are investigated. It is aimed to shorten theduration of final setting time through adding hyper plasticizer in a certainrate to the concrete and application of AC current. As a result, adding littlehyper plasticizer (0.5 %) and application of 80 V AC electrical current to theconcretes shorten the setting time without critical compressive strength loss.
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UR  - https://doi.org/10.2339/politeknik.480915
L1  - https://dergipark.org.tr/en/download/article-file/643906
ER  -