王立久   

Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates

Title : 大连理工大学(土木水力学院) 建筑材料研究所 所长 大连理工大学建筑能源技术研究中心 主任 辽宁省复合材料学会常务副理事长兼秘书长 政协辽宁省委员会委员 “建筑技术与应用”“混凝土”和“国外连建材科技“等杂志编委

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Language:English

Paper Publications

Title of Paper:Fractal Dimension Analysis of the Fine Aggregate Gradation of Interlocking Skeleton Asphalt Mixture

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Date of Publication:2011-06-01

Journal:JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION

Included Journals:SCIE、EI、ISTIC

Volume:26

Issue:3

Page Number:567-572

ISSN No.:1000-2413

Key Words:fractal dimension; fine aggregate gradation; compressive strength; splitting strength

Abstract:By analyzing the fine aggregate gradation scales from standards, fine aggregate in the asphalt mixture is regarded as a whole research object and fractal dimensions X of the samples were obtained by linear regression and (AC-13) is 2.43-2.56, Sup-13 is 2.28-2.54, SMA-13 is 2.66-2.88 and SAC-13 is 2.54-2.73. In the dense gradation mixture, there are little different between fractal dimensions of coarse and fine aggregates but it makes sense for skeleton asphalt mixture. For a given coarse aggregate gradation and the same percentage of coarse aggregates, the compressive strengths and splitting strengths of the asphalt mixture are studied when the fractal dimensions are selected as 2.60, 2.65 and 2.70, respectively. When asphalt-stone ratio is less than optimal asphalt-stone ratio, the higher compressive strength is, the bigger X can be gotten. When asphalt-stone ratio is larger than optimal asphalt-stone ratio, little difference of compressive strength can be observed under these three conditions. The largest splitting strength can be got when X is 2.65, and larger splitting strength can be observed with the ascending of the asphalt-stone ratio.

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