The sandwich concept of construction with SCC

The cost of supplying self-compacting concrete (SCC) could be more than dou ble to that of conventional concrete. In order to reduce this cost, it may be possible to cast structural elements in layers of SCC and conventional c oncrete. This paper introduces a 'sandwich' concept of layered construction and examines its possibility by addressing the issue of compatibility betw een mixtures of different theological properties, focusing mainly on their interfacial zone during placement and the resultant strength of the composi tes. (C) 2001 Elsevier Science Ltd. All rights reserved.