Microstructure of 2 and 28-day cured Portland limestone cement pastes
Küçük Resim Yok
Tarih
2010
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Natl Inst Science Communication-Niscair
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, microstructures of limestone cement pastes cured for 2 and 28 days are investigated. For this purpose, limestone and clinker are separately ground in a ball-mill until obtained a given constant 32 pm sieve residue. The gypsum is kept constant as 5% by weight of cement. Cement pastes with 0.5 water/binder ratios and 0, 6, 35% limestone/clinker ratios are prepared. After 2 and 28 days standard curing, ESEM investigations are carried out on these specimens. It is found that hydration products are accumulated around limestone particles. In 2 days, compared to the control specimen, pore percentages of cements containing 6% limestone are decreased whereas pore percentages of cement pastes containing 35% limestone are increased. The difference between porosities of the control paste and limestone cement paste is decreased at 28 days.
Açıklama
Anahtar Kelimeler
Limestone, clinker, hardened cement paste microstructure
Kaynak
Indian Journal of Engineering and Materials Sciences
WoS Q Değeri
Q4
Scopus Q Değeri
N/A
Cilt
17
Sayı
4
