Investigation of the connection between test results found in the laboratory on volume stability and the values found in practice for LD slags
This project aims to compare the results of the accelerated expansion tests with the behaviour of BOS slag in weathering heaps and as laid in roads. This test has the advantage of measuring the characteristic of BOS slag which is of most relevance to its use as an aggregate: its capacity to expand as a result of hydration of the free lime present. A test panel of BOS slag was laid in the sub-base of a road and sampled at regular intervals by drilling. Comparison of these samples with those from weathering heaps or after the accelerated expansion test suggests that the reactions occurring in the test are closely similar to those occurring under ambient conditions. Thus the test is a good representation, in a considerably shorter time, of the natural processes. Variants on the normal test were also examined. In particular, the presence of sodium chloride exercised a considerable effect on the extent of the reaction. This was itself affected by the differing effects of water as vapour and liquid on the hydration behaviour of free lime.
Bibliographic Reference: EUR 13430 EN (1991) 57 pp., FS, ECU 7.50
ISBN: ISBN 92-826-0566-3
Record Number: 199111023 / Last updated on: 1994-12-02
Original language: en
Available languages: en