Evaluation of pozzolanic activity and physico-mechanical characteristics in ceramic powder-lime pastes

被引：34
|
作者：
Bakolas, A. [1 ]
Aggelakopoulou, E. [1 ]
Moropoulou, A. [1 ]
机构：
[1] Natl Tech Univ Athens, Sch Chem Engn, Sect Mat Sci & Engn, GR-15773 Athens, Greece
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2008年 / 92卷 / 01期
关键词：
ceramic powder; hydrated lime; hydration phases; pozzolanic activity; thermal analysis;
D O I：
10.1007/s10973-007-8858-1
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Ceramic powder has been used as an artificial pozzolanic addition, in preparing pozzolanic mortars for the historic/traditional structures' construction. In order to evaluate the pozzolanic activity of ceramic powder, several pastes were prepared, by mixing it with hydrated time, in different ratios. The pastes were stored in standard conditions (RH=99 +/- 1%, T=25 +/- 1 degrees C) and evaluated using thermal analysis (DTA/TG), X-ray diffraction (XRD), compressive strength tests and mercury intrusion porosimetry (MIP), in time. The obtained results revealed that the compounds formed were CSH and C(4)ACH(11) (monocarboaluminate) after 270 days of curing. The calcium hydroxide consumption increases as the initial amount of the ceramic powder in the paste augments. The maximum strength development is obtained for ceramic powder/hydrated lime ratio 3:1.
引用
收藏
页码：345 / 351
页数：7
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