ABSTRACT
Limestone with an organic material content (TOC) between 0.2% and 0.5% by mass may also be suitable for producing satisfactory cement with acceptable performance. Until adequate performance tests are developed by TC 51/WG 12, cements containing these limestones are permitted to be specified in national standards and other regulations valid in the place where the cement is used. This is, however, unlikely to be the case in the UK
The procedure for determining the total organic content (TOC) in limestone was prepared by a European Cement Association (CEMBUREAU) working group(6).
