Numerical simulation of bitumen emulsion-stabilised base course mixtures with C&D waste aggregates considering nonlinear elastic behaviour

Abstract

This study presents the numerical modelling of a load-volume road pavement section with bitumen emulsion-stabilised base courses. The base courses used natural and construction and demolition aggregates. A 3D finite difference model was used to determine the peak responses of the pavement sections when subjected to loads. Three nonlinear models were adopted in the two base courses. The response predictions of the three models were similar. Both the resilient and permanent behaviours of these materials were modelled. An analysis was conducted on the rutting resistance of the base course materials. Both base courses were suitable for use in low-volume roads. The base course made with construction and demolition aggregates was more resistant to rutting.

The effect of RCA pavements on the liquefaction-induced settlement

“…The created soil profiles were analyzed for 10 different strong ground motion records. In addition, the points highlighted in the literature were taken into consideration in determining the soil geometry, finite element mesh and boundary conditions, which are of great importance for numerical analysis 94 – 96 .…”

A Sustainable Cold-Recycled Solution for the Surface Finishing of Unpaved Rural Roads

“…One of the most cost-effective and environmental-friendly modes of employment of RA is represented by cold-recycling, in which RA is combined with asphalt emulsion or foamed bitumen to create a stable and durable paving mixture [ 15 ]. Although cold-recycling techniques have traditionally been used in low-volume roads due to the poorer mechanical properties of corresponding mixtures [ 8 , 16 , 17 , 18 , 19 , 20 ], promising research has been reported in which cold-recycled asphalt mixtures exhibited performance in the field comparable to that of standard bituminous layers containing exclusively virgin materials [ 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 ].…”

Esnek Yol Kaplama Tabakalarında Kullanılan Geri Dönüştürülmüş Beton Agregalarının Ağır Trafik Yükleri Altında Doğrusal Olmayan Davranışının Deneysel ve Sayısal İncelenmesi

“…Pérez vd. [17], GDBA kullanılarak hazırlanan ve bitümle stabilize edilmiş malzemelerin (BSM) yol temel tabakasında kullanımını incelemiş ve BSM ile inşa edilecek temel tabakalarının doğal agregalar kullanılarak inşa edilen temel tabakalarına kıyasla daha düşük birikmiş plastik deformasyon (tekerlek izi) ve daha yüksek esnek modülü değerlerine sahip olduğunu belirtmiştir.…”

“…Pérez vd. [17], esnek yol kaplama tabalarındaki kritik konumlarda maksimum tepkileri gözlemlemek için eksenel simetrik yaklaşımı kullanarak 3 Boyutlu sayısal bir analiz gerçekleştirmiştir.…”