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asphalt pat-paper test 3
 

image

Fig. 8. — Strong Stain.
illustrating discussion of the amount of asphalt cement or bitumen which a mineral aggregate will carry, and preparation of a pat test for mailing to laboratory.

ex Clifford Richardson. The Modern Asphalt Pavement. Second edition, revised and enlarged. New York: 1913. ( image cropped from page 355, here )
 

17 February 2013
tags: asphalt; drawing; infrastructure; Richardson, Clifford; stains