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Influence factors and test of mineral filler sedimentation in asphalt mortar(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2012年04期
Page:
12-15,20
Research Field:
Publishing date:

Info

Title:
Influence factors and test of mineral filler sedimentation in asphalt mortar
Author(s):
LI Zu-zhong1; 3;  WU Jiang-long2;  CHEN Shuan-fa1;  YANG Fei-peng1
1. School of Material Science and Engineering, Chang'an University, Xi'an 710061, Shaanxi, China; 2. CCCC Second Highway Engineering Co Ltd, Xi'an 710065, Shaanxi, China; 3. Dushanzi Petrochemical Company, PetroChina, Kelamayi 833600, Xinjiang, China
Keywords:
road engineering;  asphalt mortar;  mineral filler;  sedimentation test;  percentage of density difference;  mortar performance
PACS:
U414.75
DOI:
-
Abstract:
To study the sedimentation of mineral filler in asphalt mortar, this paper designed mortar sedimentation test to determine the density and viscosity of mortar under different temperatures, analyzed the effect of test conditions and material composition on the mineral filler sedimentation by percentage of density difference to evaluate the applicability of the performance test methods of the asphalt mortar. The results show that the influence of mineral filler sedimentation on the uniformity of mortar is not significant during condensation at room temperature and the existing test methods of mortar performance by molding specimens at room temperature are applicable. The viscosity of asphalt mortar declines sharply and the rate of the mineral filler sedimentation accelerates with the rising of mortar temperature. It also proves that the difference of sedimentation among the mortars reduces as the increasing of filler-asphalt ratio, the higher the grade of base asphalt, the larger quantity of sediment miller is. The percentage of density difference of modified asphalt is smaller than that of base asphalt and the uniformity of the modified asphalt mortar is much better than that of the base asphalt mortars. 5 tabs, 1 fig, 10 refs.

References:

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Last Update: 2012-08-30