The effect of high temperature on lightweight concretes produced with colemanite coated pumice aggregates
Yükleniyor...
Dosyalar
Tarih
2016
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Sci Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Concrete is a non-combustible material. But it is known to have serious changes in its physical, chemical and mechanical properties when exposed to high temperatures. In this study, the surface of large pumice aggregate was coated with cement + colemanite (CLM) dual mixtures (0%, 7.5%, 12.5% and 17.5%). Lightweight concretes were produced by using coated aggregates. Then by exposing to temperatures at 20 degrees C (Control), 200 degrees C, 400 degrees C and 600 degrees C, the unit weight, compressive strength, ultrasonic pulse velocity and weight loss of concrete samples were determined. Also, in order to identify the internal structural properties of the samples, DTA-TGA and SEM-EDS analysis were performed. As a result of the study, the optimum value was obtained from 12.5-CLM samples. It is determined that the lightweight concretes that would be produced with pumice aggregates coated with cement + colemanite dual mixture would have a high performance against high temperature. (C) 2016 Elsevier Ltd. All rights reserved.
Açıklama
SALLI BIDECI, Ozlem/0000-0002-9699-6003
WOS: 000375817400065
WOS: 000375817400065
Anahtar Kelimeler
Colemanite, Pumice, High-temperature properties, Mechanical testing, SEM-EDS
Kaynak
Construction And Building Materials
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
113
