Samenvatting
This report presents suggested changes to coal fly ash specifications and test protocols contained in American Association of State Highway and Transportation Officials (AASHTO) Standard Specifications for Transportation Materials and Methods of Sampling and Testing (AASHTO M 295). The changes suggested include modifications to the test methods currently specified for evaluating acceptability of fly ash for use in highway concrete as well as the introduction of new test methods for enhancing such evaluations. Attachment C: 'Details of the research into methods for evaluating fly ash use in highway concrete' is only available online at http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_rpt_749AttachmentC.pdf. (Author/publisher)