Use of pyrolyzed carbon black as additive in hot mix asphalt

Journal Article · Fri Oct 31 23:00:00 EST 1997 · Journal of Transportation Engineering

DOI:https://doi.org/10.1061/(ASCE)0733-947X(1997)123:6(489)· OSTI ID:563889

Park, T ^[1]; Lee, K ^[2]; Salgado, R; Lovell, C W ^[3]; Coree, B J ^[4]

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1. Housing Research Inst., Seoul (Korea, Republic of)
2. Kyungsung Univ., Pusan (Korea, Republic of)
3. Purdue Univ., West Lafayette, IN (United States). School of Civil Engineering
4. Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States). Dept. of Civil Engineering

This paper deals with the performance of mixtures of asphalt, pyrolyzed carbon black (CB{sub p}), and two aggregates (limestone and slag). Marshall mix design was performed to determine the optimum binder content at 5% of air voids. The range of the optimum binder content was 4.2%--5.5% for limestone mixtures and 6.3%--7.8% for slag mixtures, respectively. Dynamic confined creep tests, gyratory tests, resilient modulus tests, indirect tensile tests, and Hamburg wheel tracking tests were carried out using mixtures at the optimum binder content. The test results indicate that the use of CB{sub p} in asphalt pavements increases Marshall stability, decreases permanent strain, decreases the mix strain rate at 50 C and 138 kPa confinement, increases resilient modulus and tensile strength, and increases the stripping inflection point. These results suggest that CB{sub p} improves asphalt pavement performance.

• Sponsoring Organization: USDOE
• OSTI ID: 563889
• Journal Information: Journal of Transportation Engineering, Journal Name: Journal of Transportation Engineering Journal Issue: 6 Vol. 123; ISSN JTPEDI; ISSN 0733-947X
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ASPHALTS
CARBON BLACK
COMPOSITE MATERIALS
PAVEMENTS
PYROLYSIS
ROADS
TIRES
WASTE PRODUCT UTILIZATION