An investigation on the use of tincal ore waste, fly ash, and coal bottom ash as Portland cement replacement materials

被引:83
|
作者
Kula, I
Olgun, A [1 ]
Sevinc, V
Erdogan, Y
机构
[1] Dumlupinar Univ, Dept Chem, Kutahya, Turkey
[2] Celal Bayar Univ, Dept Chem, Manisa, Turkey
[3] Sakarya Univ, Dept Chem, Sakarya, Turkey
关键词
compressive strength; expansion; setting time; microstructure; tincal ore waste;
D O I
10.1016/S0008-8846(01)00661-5
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The possibility of using tineal ore waste (TW), coal bottom ash (BA), and fly ash (FA) as partial replacement in concrete was examined through a number of tests. The properties examined include setting time, compressive strength, mortar expansion, water consistency of mortar, and microstructure. The results showed that compressive strength of all specimens containing I wt.% of TW was higher than that of the control at the 28th day of curing. At 90 days, the contribution to strength by BA + TW and FA + TW was higher than in the concrete-prepared equivalent TW beyond 3 wt.% of Portland cement (PC) replacement. With the replacement of 3-5 wt.% of PC by TW, the compressive strength of the concrete decreased compared to control concrete. However, the values obtained are within the limit of Turkish Standards (TS). Adding BA or FA with TW improved the performance relative to TW replacement only. Increasing replacement of TW gives rise to a higher setting time. As a result. TW, BA, and FA samples may be used as cementitious materials. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:227 / 232
页数:6
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