Influence of silica fume addition on concretes physical properties and on corrosion behaviour of reinforcement bars

Durability of sulfur concrete in various aggressive environments

“…They can improve particle packing and provide better properties of concrete, even reducing the amount of cement in concrete without loss of strength. Increase in the bulk density of concrete is a result of filling the mixture voids by very small fillers particles (micro filler effect) [14,15].…”

Electrochemical Behavior, Microstructural Analysis, and Morphological Observations in Reinforced Mortar Subjected to Chloride Ingress

“…The electrochemical behavior of steel reinforcement has been extensively studied and outcomes are reported in literature. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] The intention of this work is to see how well different electrochemical techniques agree for reinforced cement-based materials rather than obtaining absolute quantitative parameters ͑such as corrosion rate for example͒ and, further, to correlate results with structural and morphological observations of the bulk matrix and the steel/cement paste interface, thus setting up a combination of techniques for the assessment of corrosion and protection in reinforced concrete. …”

Estudio de la velocidad de corrosión de aceros embebidos en morteros de cemento sustituidos con residuo de catalizador de craqueo catalítico (FC3R)

“…En general, la sustitución de cemento por humo de sílice (en cantidades de hasta el 15%) producía poca influencia en los valores de Icorr en ausencia de agentes agresivos como los cloruros o el dióxido de carbono y en condiciones de elevada humedad relativa (25)(26)(27). Por su parte, algunos autores apuntaron que el uso de escorias de alto horno (en cantidades en torno al 50%) ofrecía claras mejoras en los niveles de corrosión produciendo mayores potenciales de corrosión, menores velocidades de corrosión y un retraso en los tiempos de iniciación cuando las probetas se sometían a un ataque por cloruros (2,25,(28)(29)(30).…”

“…As a rule, cement replacement by silica fume (up to 15%) had a scant impact on Icorr values in the absence of aggressive agents such as chlorides or carbon dioxide under conditions of high relative humidity (25)(26)(27). Several authors have reported that the use of (up to 50%) blast furnace slag led to visible improvements in corrosion levels, with higher corrosion potentials, lower corrosion rates and retarded starting times when the specimens were exposed to chloride attack (2,25,(28)(29)(30).…”