Mechanical and thermophysical properties of lightweight aggregate concretes
Yükleniyor...
Tarih
2015-10-15
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/restrictedAccess
Attribution-NonCommercial-ShareAlike 3.0 United States
Attribution-NonCommercial-ShareAlike 3.0 United States
Özet
In this study, experimental investigation is performed for producing new cement-based with relatively high strength, low density and good thermal properties for energy efficient buildings. Different types of concretes containing silica fume (SF), superplasticizer (SP) and air-entrained admixtures are prepared with a constant water–cement ratio, and normal aggregates replaced by lightweight aggregates (LWAs) including pumice (PA), expanded perlite (EPA) and rubber aggregates (RA) at different volume fractions of 10%, 20%, 30%, 40% and 50%. 102 samples with different materials and compositions are produced, and their characteristics are tested in accordance with ASTM and EN standards. Based on the experimental results, equations are presented to determine the relation between the thermophysical properties of composite samples. The investigation revealed that the addition of PA, EPA and RA reduced the material bulk density and compressive strength, and improved the insulation characteristics of the composite concretes. Furthermore, it was found out that the reductions in thermal conductivity and diffusivity of the produced samples reached to 82% and 74%, respectively.
Açıklama
Anahtar Kelimeler
Lightweight Aggregate Concrete, Pumice, Perlite, Rubber, Thermal Conductivity, Thermophysical Properties
Kaynak
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
Cilt
96
Sayı
Künye
Oktay, H., Yumrutaş, R., Akpolat, A. (2015). Mechanical and thermophysical properties of lightweight aggregate concretes. Construction and Building Materials, 96, pp.217-225. DOI:http://dx.doi.org/10.1016/j.conbuildmat.2015.08.015
