Abstract:
As a means to ensure economic and environmental sustainability in pavementworks,
the use of locally obtainedwastematerials (rocks) in base layer design as
well as exploring energy-efficient construction methods is highly encouraged. This
study explores the use of cement-treated recycled rocks of up to 1.5 in. (37 mm) in
size as an alternative base layer material for the construction of airfield pavements.
The Preplaced Aggregate Concreting Method (PAC) was implemented to construct
the base layer without any vibration or compaction effort. This is an unconventional
airfield pavement base construction method, which solely relies on the flowability of
the grout mix to ensure the voids between rocks are filled up bymeans of gravity. The
experimental program explores the compressive strength, modulus of elasticity and
tensile strength of the material. The preliminary results demonstrate the potential of
CTRR as a viable base layer alternative to existing stabilized bases.
