Rutting and surface-initiated cracking mechanisms of semi-flexible pavements with cement asphalt emulsion pastes

2022 ◽  
pp. 1-15
Author(s):  
Sohrab Zarei ◽  
Mohsen Alae ◽  
Jian Ouyang ◽  
Yanqing Zhao
Keyword(s):  
Flexible Pavements ◽  
Asphalt Emulsion ◽  
Cracking Mechanisms

Finite element viscoelastic simulations of rutting behavior of hot mix and warm mix asphalt overlay on flexible pavements

2021 ◽  
Vol 14 (6) ◽  
pp. 708-719
Author(s):  
Hossein Alimohammadi ◽  
Junxing Zheng ◽  
Ashley Buss ◽  
Vernon R. Schaefer ◽  
Christopher Williams ◽  
...  
Keyword(s):  
Finite Element ◽  
Flexible Pavements ◽  
Warm Mix Asphalt ◽  
Asphalt Overlay ◽  
Rutting Behavior

scholarly journals Research on the Properties of Mineral–Cement Emulsion Mixtures Using Recycled Road Pavement Materials

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 563
Author(s):  
Łukasz Skotnicki ◽  
Jarosław Kuźniewski ◽  
Antoni Szydło
Keyword(s):  
Road Construction ◽  
Base Layer ◽  
Asphalt Emulsion ◽  
Reclaimed Asphalt ◽  
Pavement Materials ◽  
Road Pavement ◽  
Road Surfaces ◽  
Cement Binder ◽  
Pavement Structures ◽  
By Products

The reduction in natural resources and aspects of environmental protection necessitate alternative uses of waste materials in the area of construction. Recycling is also observed in road construction where mineral–cement emulsion (MCE) mixtures are applied. The MCE mix is a conglomerate that can be used to make the base layer in road pavement structures. MCE mixes contain reclaimed asphalt from old, degraded road surfaces, aggregate improving the gradation, asphalt emulsion, and cement as a binder. The use of these ingredients, especially cement, can cause shrinkage and cracks in road layers. The article presents selected issues related to the problem of cracking in MCE mixtures. The authors of the study focused on reducing the cracking phenomenon in MCE mixes by using an innovative cement binder with recycled materials. The innovative cement binder based on dusty by-products from cement plants also contributes to the optimization of the recycling process in road surfaces. The research was carried out in the field of stiffness, fatigue life, crack resistance, and shrinkage analysis of mineral–cement emulsion mixes. It was found that it was possible to reduce the stiffness and the cracking in MCE mixes. The use of innovative binders will positively affect the durability of road pavements.

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