Recently, these guidelines of greater long-term autogenous shrinkage occurring at lower n,/c ratios have been supported by French research [18]. Baroghel-Bouny has shown that with a decreasing w/c ratio the 28-day autogenous shrinkage of cement paste increases, as shown in Fig. 6. Tazawa and Miyazawa [ 9] attribute this to the denser paste microstructure