Microstructural properties of lithium-added cement mortars subjected to alkali-silica reactions
Yükleniyor...
Tarih
2018
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Indian Acad Sciences
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Little comparative research has been done on the efficiency of lithium additives to reduce the alkali-silica reaction (ASR) expansion. To reduce the ASR effects of reactive aggregate, different mortar bars were obtained by adding lithium additives (Li2SO4, LiNO3, Li2CO3, LiBr and LiF) to the mixing water by the following mass percentages of cement: 0%, 0.5%, 1%, 1.5%, 2%, 2.5% and 3%. The ASR expansions of the mortar bars at 2, 7 and 14 days were identified according to ASTM C 1260-14. The morphology of the specimens subject to the ASR effect was analysed using a scanning electron microscope, and their chemical composition was analysed by electron dispersion spectroscopy. Among all specimens, the lowest level of 14-day ASR expansion was obtained in mortar bars with 3% Li2CO3 additive.
Açıklama
Demir, Ilhami/0000-0002-8230-4053; Sevim, Ozer/0000-0001-8535-2344
Anahtar Kelimeler
Alkali-silica reaction, mortar bar, length change, lithium compounds, micro-structure
Kaynak
Sadhana-Academy Proceedings In Engineering Sciences
WoS Q Değeri
Q4
Scopus Q Değeri
Q1
Cilt
43
Sayı
7
Künye
closedAccess
