rock asphalt

rock asphalt

[′räk ′as‚fȯlt]
(geology)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

rock asphalt

Porous rock such as sandstone or limestone that has become impregnated with natural asphalt through a geological process.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
[16.] Suaryana, N., Performance Evaluation of Stone Matrix Asphalt using Indonesian Natural Rock Asphalt as Stabilizer, International Journal of Pavement Research and Technology, Jhongli: Chinese Society of Pavement Engineering, 9(5), 2016, pp.
Rock asphalt (RA) is a kind of asphalt coming from the petroleum flowing into the split cracks of rock.
found that the addition of rock asphalt improved the high-temperature performance of petroleum bitumen binders and mixtures.
In view of the construction variability which is inevasible for the production of the Buton rock asphalt-modified asphalt by "dry process," this research innovatively put forward the "wet process." The rock asphalt is firstly pretreated by the activation process for preliminary grinding and activation.
The raw material of the Buton rock asphalt (BRA) is the rock asphalt powder produced by Hubei Zhengkang Asphalt Technology Co., Ltd.
The activation pretreatment aims at improving the degree of fusion between the rock asphalt and the matrix asphalt and thus fully exerts the modification ability of the rock asphalt [13].
"Wet Process" of the Buton Rock Asphalt. Specifically, the "wet process" of the Buton rock asphalt developed in this paper includes the following: the matrix asphalt is firstly preheated from 150[degrees]C to 160[degrees]C by a heating system and is then pumped to the asphalt tank.
In order to compare the influence of different mixing amounts of the Buton rock asphalt on the performance of modified asphalt and asphalt mixture and determine the optimum mixing amount of rock asphalt, 10%, 20%, 30%, 40%, and 50% of the activated rock asphalt are, respectively, added to the No.
Influence of Different Rock Asphalt Contents on the Physical and Mechanical Properties of Asphalt Binder.
At the same time, after the aging of the rotating film, the residual penetrations of the modified Buton rock asphalt with five different mixing amounts are all higher than that of the matrix asphalt, indicating that the antiaging performance of the modified Buton rock asphalt has obvious improvement.
Sun and Li tested fatigue properties of high modulus asphalt using Dynamic Shear Rheometer (DSR) and showing that the fatigue performance of PR-Plasts is better than rock asphalt and 15/25# is the worst at given conditions [9].
Materials Appearance Size Melting point Density (mm) ([degrees]C) (g/[cm.sup.3]) PRM Grey 5 175 0.93-0.965 PRS Cylinder black 2~4 140-150 0.91-0.965 RA Granular black 2~4 150 0.96 ZQ Black solid 3 >160 1-1.2 Materials Ingredient PRM -- PRS Plastic > 95%, filling < 5% RA Rock asphalt, low density polyethylene ZQ -- Table 5: Static modulus test scheme.