Study on the Computing Method of Asphalt Absorption Coefficient in the Effective Relative Density of Aggregate

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Abstract:

According to the computing formula of the effective relative density of aggregate and its physical significance, the theoretical computing formula of asphalt absorption coefficient C has been deduced through the Four-phase system theory of aggregate, and the rationality of asphalt absorption coefficient has been verified through testing and comparison with other computing methods. It is concluded that: (1) the asphalt absorption coefficient is between 0.2 and 0.8 when the water absorptivity of aggregate is between 0.5% and 4.0%; (2) the formula of asphalt absorption coefficient should includes bulk relative density of aggregate; (3) when the water absorptivity of aggregate goes up, the impact exerted by the bulk relative density of aggregate upon the asphalt absorption coefficient would be greater accordingly.

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1886-1893

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October 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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