QUANTIFICATION OF THE SPECIFIC SURFACE AREA OF AGGREGATE USING X-RAY TOMOGRAPHY
Abstract eng: This paper presents a new method using x-ray tomography imaging to quantify the specific surface area of aggregates. The method reconstructs the three-dimensional (3D) representation of individual particles and computes the specific surface area and the sphericity (a shape factor) of individual particles. The quantified specific surface area of a limestone aggregate in the sieve size range (3/8″-No.4) indicates that the specific surface area and the sphericity have a large variation among individual particles. However, the overall specific surface area of the aggregate particles within the same sieve size range can be accurately obtained using about 25-30 particles. It has been found that the specific surface area of the aggregates is much larger (84%) than that of the spheres of equivalent size.
Contributors:
Publisher:
Columbia University in the City of New York
Conference Title:
Conference Title:
15th ASCE Engineering Mechanics Division Conference
Conference Venue:
New York (US)
Conference Dates:
2002-06-02 / 2002-06-05
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2014-11-19, last modified 2014-11-19
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