Effects of Water-to-Cement Ratio on Pore Structure Evolution and Strength Development of Cement Slurry Based on HYMOSTRUC3D and Micro-CT

Changing the water-to-cement ratio is one of major ways to develop cement slurry with different densities, which in turn will greatly affect pore structure and mechanical properties slurry. In current study, hydration model HYMOSTRUC3D was used investigate effects (w/c) (0.40, 0.44, 0.50) on evolution strength development The microstructure stone characterized via scanning electron microscope (SEM) micro-computed tomography (micro-CT), tested analyzed a tester. simulated compressive capillary porosity are good agreement measured data, where relative error between results within 0.6~10.7% 13.04~25.31%, respectively. proved as main factor affecting w/c ratios. Herein, mathematical relationship could be well fitted prediction models Balshin function (R2 = 0.95), Ryshkewitch 0.94), Schiller 0.96), linear regression 0.95). Moreover, (y −2.38x + 82.76) can characterize predict quantitative stone. findings this study provide reference value fields oil gas cementing building concrete.