Farklı kür sıcaklıkları ve kür koşullarının ince taneli çimento ile enjeksiyon yapılmış kum zeminlerin permeabilite katsayısına etkisi

Yıl 2022, Cilt: 37 Sayı: 3, 1155 - 1168, 28.02.2022

Eyubhan Avcı , Emre Deveci , Aydın Gökçe

https://doi.org/10.17341/gazimmfd.900487

Öz

Bu deneysel çalışmada farklı kür sıcaklıkları ve farklı kür koşullarının ince taneli çimento ile enjeksiyon yapılmış kum numunelerin permeabilite katsayısına etkisi araştırılmıştır. Deneylere farklı Su/Çimento (S/Ç) oranlarında hazırlanmış ince taneli çimento süspansiyonlarının reolojik özelliklerinin (sedimentasyon, viskozite ve katılaşma süresi) belirlenmesi deneyleri ile başlanmıştır. Reolojik özellikler belirlendikten sonra S/Ç oranları 1,5, 1,8, 2,1 ve 2,5 olan ince taneli çimento süspansiyonları ile farklı gradasyonda ve %30 rölatif sıkılıkta hazırlanmış kum numunelere enjeksiyon deneyleri yapılmıştır. Enjeksiyon deneylerinde başarılı olan numuneler farklı kür sıcaklıkları ve farklı kür koşullarında bekletilerek 3, 7, 14, 28, 56 ve 120. günlerde düşen seviyeli permeabilite deneyleri yapılmıştır. İnce taneli çimento ile enjeksiyon yapılmış ve kür tankında bekletilmiş olan numunelerin permeabilite katsayıları zamana bağlı olarak azalırken, açık ortamda bekletilen numunelerin permeabilite katsayıları zamana bağlı olarak artmıştır. Sıcaklığın artması kür tankında bekletilen numunelerin permeabilite katsayısını artırırken, açık ortamda bekletilen numunelerin permeabilite katsayısını azaltmıştır. İnce taneli çimento ile enjeksiyon yapılmış ve açık ortamda bekletilmiş olan numunelerin permeabilite katsayı değerleri kür tankında bekletilmiş olan numunelerin permeabilite katsayı değerlerinden yüksek çıkmıştır. Yapılan deneysel çalışmalar farklı kür süresi ve sıcaklığının ince taneli çimento ile enjeksiyon yapılmış kum numunelerin permeabilite katsayısını etkilediğini göstermiştir.

Anahtar Kelimeler

Kür sıcaklığı, kür koşulları, ince taneli çimento

Kaynakça

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