Studying the Feasibility of Using Roller Compacted Concrete with Partial Replacement of Cementitious Materials by Cement Kiln Dust in Airport Aprons

Authors

  • Zahraa A.M. Ali khan, Ali A. Altameemi

Abstract

Roller compacted concrete (RCC), is known as, concrete compacted by roller compaction that, in its unhardened state, will support a roller while being constructed. RCC is a reliable material used successfully in the construction of heavy-duty low speed pavements.

      The aim of this research was to study the characteristics of RCC in which, different percentages (0, 5, 10 and 20) % of cementitious materials (CMs) were replaced by cement kiln dust (CKD).

.     The results indicated that the mechanical properties of the RCC control mix (with 0 % CKD) fulfilled the requirements of concrete used for airport pavements.  It was proved that the RCC specimens in which 5% of the CMs (6.67 % of cement) was replaced by CKD possessed the best properties in comparison with other specimens with 10, and 20% replacement percentages. The study showed that the RCC with 5%, partial replacement of CMs by CKD could fulfill the requirements of the surface layer of airport apron pavements, while RCC with 10% replacement could be used  for  the construction of subsurface layers of these pavements. A new usage of RRC was confirmed, lowering the negative environmental impact of CKD, and achieving  the production of sustainable pavements in airports,.

Published

2020-11-01

Issue

Section

Articles