An Experimental Study of Properties of Fresh Mortar Produced by Two-Stage Mixing

概要

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Two-stage mixing is effective for decreasing the degree of bleeding and plastic viscosity of mortar/concrete. However, the quality improvement depends entirely on various manufacturing conditions, including factors that affect the quality of products, therefore, finding a stabilizing effect is not sufficient. In this study, the influence of mixing conditions such as the properties of fine aggregates, water cement ratio and S/C on the degree of bleeding and plastic viscosity of mortar is investigated. It is proved that grain size distribution, the fine powder content of fine aggregates, and water cement ratio affect mortar bleeding and the quality improvement by two-stage mixing. Moreover, it is confirmed that two-stage mixing is effective for decreasing the plastic viscosity of mortar.
東海大学の論文