Development and Performance of Cement Bound Materials in Road Pavements
Abstract
The use of cement bound materials (CBMs) for road construction in Qatar is relatively
new. CBM improves the structural capacity and durability of pavement, but considerations
should be made to the setting time and strength development in hot arid environment,
such as in Qatar. The paper presents a laboratory development and performance
characteristics of CBM mixtures, with environmental and economic benefits through
the use of local and recycled materials. The developed mixtures showed full compliance
with the grading, strength and durability requirements of the Qatar Construction
Specifications (QCS, 2014). Site data from Ashghal projects indicated the difficulty
of producing consistent strength in practice, with the potential of increased strength
and associated risk of reflection cracking in the asphalt overlaying. Recommendations
are made to improve the construction practice and specification of cement and other
hydraulically bound materials to enhance the service life of pavement and support the
government strategy of sustainable construction.
Collections
- Theme 2: Materials and Transportation Engineering [43 items ]