Highways Agency Report

             Shelfmark: SSR/TRL/WP163
       Personal author: Emerson M
                 Title: The absorption of water by concrete: cyclic wetting
             Publisher: Transport and Road Research Laboratory, 1991
  Physical description: 8p., charts
                 Price: Unpriced
                Series: Working Paper: WP/SB/6/91
       Notes - general: Abstract: Historically, permeability has been regarded
                        as the property which affects the durability, and
                        hence the quality, of concrete.  It is suggested that,
                        for cover concrete, sorptivity should also be taken
                        into account.  This is a relatively new concept
                        regarding concrete, and it is recommended that
                        sortivity data are collected and standardised in order
                        that they can be considered for inclusion in
                        Specifications and Codes of Practice.  The result of
                        experimental work to investigate the effect of initial
                        moisture content on the  sorptivity of  concrete are
                        presented.  It is shown that sorptivity values
                        decrease as the initial moisture content of the
                        concrete increases.  Data are not yet sufficient for a
                        relationship to be defined.  It is suggested that
                        further work is necessary in order to investigate the
                        effects of moisture distribution, sample thickness and
                        different durations of wetting cycles.
               Keyword: Concrete Analysis
 TRRL WORKING PAPER
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