A new methodology for determining particle density and absorption of lightweight, normal-weight and heavy weight aggregates in aqueous medium

摘要

Surface water absorption affects the value of the particle density obtained according to the UNE 1097-6. The aqueous medium absorption according to the standard poses problems as much in coarse fraction as in fine fraction. This new methodology is proposed in order to solve the problems observed in the current standard. The method is validated experimentally applying it to 5 different lightweight aggregates, 2 limestone normal-weight aggregates and a heavyweight aggregate. Different initial water contents and evolution of water absorption up to 28 days were analyzed. (C) 2017 Elsevier Ltd. All rights reserved.