2004
DOI: 10.1081/lft-120034208
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Abstract: The characteristics of some residual asphalts samples obtained from Nigerian medium and heavy crudes were studied using ASTM/IP standard tests. The residual asphalts were compared with industrial solid grade asphalts and cut back samples. Penetration and softening point tests performed on the treated samples showed that some of these samples fall within the range of road paving asphalts while sample having a low temperature susceptibility was found to be of better than the solid grade asphalt. The rheological … Show more

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Cited by 2 publications
(3 citation statements)
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“…Investigation of the residual asphalts produced from twenty-three Nigerian crude oil samples revealed that these asphalts have low asphaltene contents (1.52 -6.0 wt.%) with softening points varying between 25-66.5°C (R & B) and penetration values of 26-300 (0.1 mm) and above at 25°C [46,48,58].…”
Section: Previous Studies On Asphaltsmentioning
confidence: 99%
See 1 more Smart Citation
“…Investigation of the residual asphalts produced from twenty-three Nigerian crude oil samples revealed that these asphalts have low asphaltene contents (1.52 -6.0 wt.%) with softening points varying between 25-66.5°C (R & B) and penetration values of 26-300 (0.1 mm) and above at 25°C [46,48,58].…”
Section: Previous Studies On Asphaltsmentioning
confidence: 99%
“…Oyekunle and others [5, [46][47][48][49][50][51][52][53][54][55][56][57][58][59] have carried out various studies on the physical characteristics and chemical composition of asphalts. Investigation of the residual asphalts produced from twenty-three Nigerian crude oil samples revealed that these asphalts have low asphaltene contents (1.52 -6.0 wt.%) with softening points varying between 25-66.5°C (R & B) and penetration values of 26-300 (0.1 mm) and above at 25°C [46,48,58].…”
Section: Previous Studies On Asphaltsmentioning
confidence: 99%
“…To meet these requirements, special grades are manufactured by treating the straight run residual asphalt by various means. Some of the methods used include the conventional air-blowing, which is used extensively to alter the chemical composition and improve its rheological properties via oxidation (Gun, 1973;Hobson and Pohl, 1973;Oyekunle and Adesanya, 2000;Oyekunle and Omatsone, 2004). Correspondingly, the controlled addition of elemental sulphur to residual asphalts also resulted in chemical 252 L. O.…”
Section: Introductionmentioning
confidence: 97%