High grouting material and how much do you know of self-compacting concrete crack propagation process

Self-compacting concrete, high strength grouting material cracks in the study of high strength grouting material and fracture mechanics of self-compacting concrete data, must find out the concrete grouting grouting test material under the stress of the fracture extension mechanism. High strength grouting material under stress and self-compacting concrete crack extension, can through the following ways to test; High strength grouting material and self-compacting concrete stress - The decrease of the strain curve slope; Poisson's ratio increases; To apply brittle lacquer on the surface of the block, or direct microscopic observation of the surface of the photoelastic coating; And decreased after block of sound waves, etc. Block under stress after section, the section on the geometric properties of fracture, can after scanning electron microscope (sem) or the crack dyeing microscope observation method to study. Hardened high strength grouting material and self-compacting concrete before by external force effect, due to the chemical composition by hydration of cement to shorten and decrease of physical cause the change of volume of mortar, the rough Inner Mongolia grouting material manufacturers on the interface of aggregate and mortar produced the uneven spread of tensile stress. It is enough to damage the coarse aggregate and mortar interface, form many scattered mess of interface cracks. Other also because of the high strength grouting material and self-compacting concrete forming the exudation of the effect, some rising water stop by coarse aggregate particles, thus set in the edge of the coarse aggregate, high strength grouting material and self-compacting concrete hardening after became interface crack. High strength grouting material and the self-compacting concrete, from external force effect produced its internal tensile stress, the tensile stress in a simple geometry to form the micro crack at the top of the form of stress concentration, with the increasing tensile stress, leading to the further extension of tiny cracks, collection, extend, after the geometry of visible cracks. The relationship between load and deformation is the performance of the internal micro crack law of development. High strength grouting material and self-compacting concrete under external force effect of the deformation and damage process, also is the internal cracks occur and the strength of cement grouting material developing process, it is a mutation from development to the process of mutation. Only when high strength grouting material and self-compacting concrete internal microscopic damage development to a certain level to make high strength grouting material and overall damage of self-compacting concrete.