NANO SİLİKA KÜR UYGULAMASININ ÇİMENTO BAĞLAYICILI KOMPOZİTLERİN DONMA-ÇÖZÜLME DİRENCİ ÜZERİNE ETKİSİNİN ARAŞTIRILMASI

Year 2019, , 1032 - 1040, 31.07.2019

Arife Akın

https://doi.org/10.28948/ngumuh.560866

Cited By: 1

Abstract

   Bu çalışmada nano silica solüsyonunda kür etkisine
maruz bırakılan çimento bağlayıcılı kompozitlerin (ECC), donma-çözülme döngüleri
gibi ağır çevresel koşullar altında gösterdikleri direnç araştırılmıştır. Bu
amaçla iki farklı tip uçucu kül iki farklı oranda kullanılarak dört farklı karışım
olarak hazırlanan ECC numuneleri, ASTM C666 ProsedürA’ya uygun olarak 300
donma-çözülme döngüsüne maruz bırakılmıştır. Numunelerin mekanik özelliklerindeki
değişimler basınç ve eğilme testleri ile, fiziksel özelliklerindeki değişimler ise,
30 çevrimde bir ağırlıklarının ölçülmesi ile belirlenmiştir. Çalışma neticesinde
elde edilen sonuçlar, çimento bağlayıcılı kompozitlerde nano silica (NS) kür uygulamasının,
zorlayıcı çevresel koşullar altında numunelerin dayanım ve dayanıklılık gibi özelliklerinde
suda kür uygulamasına göre kayda değer artışlar sergilediğini göstermiştir. 

Keywords

çimento bağlayıcılı kompozitler, donma-çözülme etkileri, uçucu kül, mekanik ve fiziksel özellikler

Supporting Institution

TÜBİTAK

Project Number

116M003

Thanks

Yazar bu çalışmanın gerçekleşmesinde sağladığı finansal kaynaktan ötürü TÜBİTAK’ a teşekkürlerini sunar. Proje No: 116M003

INVESTIGATION OF THE EFFECT OF NANO-SILICA CURING ON THE FREEZE-THAW RESISTANCE OF CEMENTITIOUS COMPOSITES

Abstract

   In this study, the resistance of
cementitious composites (ECC) exposed to the curing effect in nano-silica
solution under heavy environmental conditions such as freeze-thaw cycles is
investigated. For this purpose, ECC samples prepared as four different mixtures
using two different types of fly ash in two different ratios were subjected to
300 freeze-thaw cycles in accordance with ASTM C666 Procedure A.The changes in
the mechanical properties of the samples were tested with compressive and
bending tests, changes in the physical properties of the samples were
determined by measuring their weights in every 30 cycles. The results of the
study showed that nano-silica curing in cementitious composites exhibit
remarkable increases in the properties such as strength and durability of the
samples even under challenging environmental conditions compared to water
curing.

Keywords

Cementitious composites, freez-thaw effects, flyash, mechanical and physical properties

Project Number

116M003

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