Atýk lastik parçalarýyla güçlendirilmiþ iri taneli zeminlerin donma-çözülme sonucu mukavemetlerindeki deðiþimin incelenmesi

Ýklimsel farklýlýklarýn sýkça yaþandýðý bölgelerde mühendislik yapýlarý farklý yükler altýnda olumsuz etkilemektedir. Bu etkinin iri taneli zeminlerde çeþitli atýk malzemeler katýlýmýyla azaltýlmasý yönünde çalýþmalar yapýlmaktadýr. Bu çalýþma da atýk lastik parçalarýyla (AL) güçlendirilmiþ iri taneli zeminin(TZ) donma-çözülme sonucu mukavemetlerindeki deðiþim incelenmiþtir. Deneyler standart proktor enerjisi altýnda sýkýþtýrýlmasý ile hazýrlanan iri taneli zemin numuneleri üzerinde yürütülmüþtür. Bu iri taneli zemin örneðine %0,5, %1 ve %2 atýk lastik ilavesi yapýlarak 1, 7 ve 28 günlük çalýþma odasý sýcaklýðýndaki (+21oC) kür sonucu, serbest basýnç mukavemetleri belirlenmiþtir. En yüksek mukavemet artýþý; TZ+%0.5AL(1.18 mm.) karýþýmda %8.62, TZ+%1AL(2.00 mm.) karýþýmda %16.92 ve TZ+%1AL(3.15 mm.) karýþýmda ise %9.54 oranýnda olmuþtur. Bu karýþýmlar, donma-çözülme deneyine tabii tutulmuþtur. Deney sonucunda, TZ+%0.5AL(1.18 mm.) karýþýmýn mukavemeti %28.05 ve TZ+%1AL (3.15 mm.) karýþýmýnýn mukavemeti %13.33 oranýnda düþerken, TZ+%1AL(2.00 mm.) karýþýmýn mukavemeti ise %5.61 oranýnda artmýþtýr.

Investigation on the variation of strength of coarse grained soils reinforced with waste tires pieces as a result of freezing and thawing cycles

In regions where climatic differences frequently are affects especially engineering structures under different loads. This effect is being studied to reduce the participation of various waste materials in coarse grained soil. In this study, the changes in strength of coarse grained soil (CG) reinforced with scrap tire pieces (ST) was investigated under freezing- thawing conditions. Experiments were conducted on coarse grained samples prepared by compression under standard proctor energy. Unconfined compressive strength values of coarse grained soil sample with 0.5%, 1% and 2% addition of scrap tires were determined at studied temperature (+21oC) on days 1, 7 and 28. The highest increase rate of strength was 8.62% in CG+0.5%ST(1.18 mm) mixture, %16.92 in CG+1%ST(2.00 mm.) mixture and %9.54 in CG+%1ST(3.15 mm.) mixture. The freeze-thaw test was applied on this mixture. The results showed that while the strength rate of CG+0.5%ST(1.18 mm.) and CG+1%ST(3.15 mm.) mixtures decreased to 28.05% and 13.33%, respectively; the strength of CG+1%ST(2.00 mm.) mixture increased to 5.61%.