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A study of mortars prepared with fly ash and silica fume for use in structures exposed to marine enviroments

机译:用粉煤灰和硅粉制备的砂浆用于暴露于海洋环境的结构的研究

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摘要

The purpose of this study is to evaluate different mortar mixtures containing 5, 10 and 15 percent P/P silica fume and 5, 10, 12.5, 15 and 17.5 percent P/P fly ash to be used for repairing/canstructing reinforced concrete structures exposed to marine environments. These were evaluated from the following standpoints: physical-chemical (capillary absorption and effective porosity); mechanical (compressive strength); electrachemical (lineal polarization, cyclic polarizacion and rapid chloride permeation); morphological (scanning electron microscopy). Results showed that 15 percent silica fume mixture whith no fly ash gave the best performance from both the physical-mechanical as well as the economic standpoint.
机译:这项研究的目的是评估包含5%,10%和15%的P / P硅粉以及5%,10%,12.5%,15%和17.5%的P / P粉煤灰的不同砂浆混合物,以修复/构造暴露的钢筋混凝土结构海洋环境。从以下观点进行了评估:物理化学(毛细管吸收和有效孔隙率);机械的(抗压强度);电化学(线极化,环状极化和氯离子快速渗透);形态学(扫描电子显微镜)。结果表明,从物理机械和经济角度来看,没有粉煤灰的15%硅粉混合物均具有最佳性能。

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