Influence of crumb rubber size particles on moisture damage and strength of the hot mix asphalt

2021 ◽  
Author(s):  
Munder Bilema ◽  
Mohamad Aman ◽  
Norhidayah Hassan ◽  
Mohamed Haloul ◽  
Saeed Modibbo
Keyword(s):  
Hot Mix Asphalt ◽  
Moisture Damage ◽  
Crumb Rubber

Behavior of a hot mix asphalt made with recycled concrete aggregate and crumb rubber

2019 ◽  
Vol 46 (6) ◽  
pp. 544-551 ◽  
Author(s):  
Marcio Muniz de Farias ◽  
Ferney Quiñonez Sinisterra ◽  
Hugo Alexander Rondón Quintana
Keyword(s):  
Hot Mix Asphalt ◽  
Resilient Modulus ◽  
Permanent Deformation ◽  
Moisture Damage ◽  
Crumb Rubber ◽  
Recycled Concrete ◽  
Asphalt Binders ◽  
Experimental Program ◽  
Concrete Aggregate ◽  
Recycled Concrete Aggregate

An experimental program was devised to evaluate the effect on the resistance of a hot mix asphalt, due to the total replacement of a natural aggregate (limestone — LS) by a recycled concrete aggregate (RCA). Two asphalt binders were used: conventional AC 50-70 (penetration grade) and AC 50-70 modified with crumb rubber (CRM). The mechanical properties investigated were the stability and flow ratio (Marshall test), indirect tensile strength, resistance to abrasion (Cantabro test), resilient modulus, resistance to permanent deformation, to fatigue and to moisture damage (modified Lottman test). When the LS is completely replaced by RCA, the resistance under monotonic loading, moisture damage and permanent deformation improved, the mass loss in the Cantabro test and the resilient modulus shows appropriate values, however, the fatigue resistance decreases. Besides, mixtures with RCA using CRM binder showed lower fatigue life under stress controlled tests, but much better rutting resistance.

scholarly journals Dataset of mechanical, marshall and rheological properties of crumb rubber – Bio-oil modified hot mix asphalt for sustainable pavement works

Data in Brief ◽  
2018 ◽  
Vol 21 ◽  
pp. 63-70 ◽  
Author(s):  
Abayomi Emmanuel Modupe ◽  
Olumoyewa Dotun Atoyebi ◽  
Opeyemi Emmanuel Oluwatuyi ◽  
Oluwasegun James Aladegboye ◽  
Ayobami Adebola Busari ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Hot Mix Asphalt ◽  
Crumb Rubber ◽  
Bio Oil

scholarly journals Evaluating the Surface Free Energy and Moisture Sensitivity of Warm Mix Asphalt Binders Using Dynamic Contact Angle

2019 ◽  
Vol 2019 ◽  
pp. 1-15 ◽  
Author(s):  
Muhammad Rafiq Kakar ◽  
Meor Othman Hamzah ◽  
Mohammad Nishat Akhtar ◽  
Junita Mohamad Saleh
Keyword(s):  
Contact Angle ◽  
Free Energy ◽  
Hot Mix Asphalt ◽  
Asphalt Binder ◽  
Moisture Damage ◽  
Warm Mix Asphalt ◽  
Work Of Adhesion ◽  
Moisture Sensitivity ◽  
Modified Binders ◽  
Production Temperature

From the environmental conservation perspective, warm mix asphalt is more preferable compared to hot mix asphalt. This is because warm mix asphalt can be produced and paved in the temperature range 20–40°C lower than its equivalent hot mix asphalt. In terms of cost-effectiveness, warm mix asphalt can significantly improve the mixture workability at a lower temperature and thus reduce greenhouse gas emissions, to be environment friendly. However, the concern, which is challenging to warm mix asphalt, is its susceptibility to moisture damage due to its reduced production temperature. This may cause adhesive failure, which could eventually result in stripping of the asphalt binder from the aggregates. This research highlights the significance of Cecabase warm mix additive to lower the production temperature of warm mix asphalt and improvise the asphalt binder adhesion properties with aggregate. The binders used in the preparation of the test specimen were PG-64 and PG-76. The contact angle values were measured by using the dynamic Wilhelmy plate device. The surface free energy of Cecabase-modified binders was then computed by developing a dedicated algorithm using the C++ program. The analytical measurements such as the spreadability coefficient, work of adhesion, and compatibility ratio were used to analyze the results. The results inferred that the Cecabase improved the spreadability of the asphalt binder over limestone compared to the granite aggregate substrate. Nevertheless, the Cecabase-modified binders improved the work of adhesion. In terms of moisture sensitivity, it is also evident from the compatibility ratio indicator that, unlike granite aggregates, the limestone aggregates were less susceptible to moisture damage.

scholarly journals Study the effect of adding crumb rubber on the performance of hot mix asphalt

2020 ◽  
Vol 737 ◽  
pp. 012129
Author(s):  
Teba Tariq Khaled ◽  
Ghufraan Mohammed Aboud ◽  
Rwayda Kh.S. Al-Hamd
Keyword(s):  
Hot Mix Asphalt ◽  
Crumb Rubber
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