The Hypothesis of the Deformation Mechanism of Cement Slurry

Abstract

Exploring the deformation mechanism of cement slurry is of great theoretical significance to ensure the safety and stability of construction, highways, railways, hydropower, nuclear waste disposal and other engineering components, which can provide a theoretical basis for disaster prevention and environmental protection. Scientists have established many theories and models, which are partially reasonable and clearly insufficient because they cannot explain the various deformations, microstructure evolution, strength formation and development of cement slurry solidification. A new hypothesis of the cement slurry deformation mechanism is proposed. The hypothesis is that the combination of clinker and its hydration products expands, shrinks, and re-expands in sequence, and the stress between them changes from repulsion to attraction and then to the coexistence of repulsion and attraction, inducing micro-and macro deformation of the cement slurry. The water cement ratio and mean size are the main factors affecting the deformation. This hypothesis can reasonably explain the deformation of cement slurry. The formation and development of the cement slurry strength are discussed. Some viewpoints are questioned, and some suggestions are given.