TECHNICAL NOTE: DEVELOPMENT OF A PROTOTYPE VARIABLE IMPACT TESTING APPARATUS. UNBOUND AGGREGATES IN ROADS. PROCEEDINGS OF THE 3RD INTERNATIONAL SYMPOSIUM, UNIVERSITY OF NOTTINGHAM, APRIL 11-13, 1989
This article describes the development of a prototype portable impact testing apparatus known as the Variable Impact Swinging Hammer Test Apparatus or ODIN. The apparatus has been used to investigate the effects of variation of the drop height (0-600 mm), hammer diameter (50-300 mm) and hammer mass (5-20 kg) on the results of the peak decelerations and time periods of impulse measured in impact tests of various granular materials (oolitic limestone, ballast, crushed motorway arisings with some plastic fines, and crushed concrete). The theory of the equipment is presented, as are results of tests showing the stress related behaviour of the granular materials for a range of hammer masses and diameters that include a combination closely approximating to the Clegg Impact Hammer. Preliminary results indicate that with a suitable plate size and drop height, the apparatus gives a useful indication of the quasi-elastic (resilient) modulus of these materials. For the covering abstract of the conference see IRRD 827698.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0408043555
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Corporate Authors:
Butterworths and Company Publishers, Limited
Borough Green
Sevenoaks, Kent TN15 8PH, England -
Authors:
- Boyce, J R
- COBBE, M I
- FLEMING, P R
- Publication Date: 1989-8
Language
- English
Media Info
- Pagination: p. 397-407
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Serial:
- Publication of: Butterworth and Company, Limited
- Publisher: Butterworths and Company Publishers, Limited
Subject/Index Terms
- TRT Terms: Concrete; Conferences; Granular materials; Impacts; Limestone; Measurement; Modulus of elasticity; Portable equipment; Recycling; Test procedures
- Subject Areas: Data and Information Technology;
Filing Info
- Accession Number: 00604638
- Record Type: Publication
- Source Agency: Transport and Road Research Laboratory (TRRL)
- ISBN: 0-408-04355-5
- Files: ITRD, TRIS
- Created Date: Feb 28 1991 12:00AM