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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.17 [2010] >
IJEMS Vol.17(4) [August 2010] >
| Title: | Microstructure of 2 and 28-day cured Portland limestone cement pastes |
| Authors: | Sezer, Gözde İnan
Çopuroğlu, Oğuzhan
Ramyar, Kambiz |
| Keywords: | Limestone
clinker
hardened cement paste microstructure |
| Issue Date: | Aug-2010 |
| Publisher: | CSIR |
| Abstract: | 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 µm 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. |
| Page(s): | 289-294 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.17(4) [August 2010]
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