Influence of iron oxide pigments on the properties of concrete interlocking blocks

Iron ore tailings in the production of cement tiles: a value analysis on building sustainability

“…The inorganic pigments used in cement tiles are fine particles, generally insoluble in water (LEE;LEE;YU, 2003). They are usually comprised of iron oxide and chromium oxide; with proportions that vary according to the desired colour.…”

Characterisation of the variations of tint and the adhesion of pigments onto the surface of mortar

“…Moreover, some types of pigments added in excessive amount can degrade the properties of the fresh concrete. According to the mix-design of mortar or concrete and the type of pigments, the ranges of the weight ratio between pigment and cement becomes acceptable between 4 and 9 wt.% [16,17]. This research considers new recent developments to decrease the amount of pigments used to colour the mortar or concrete.…”

“…16 (OH) 2 Á4H 2 O) and the existence of porosity, it may be estimated that the X-ray emission of calcium have an attenuation length in the paste of the order of 30 lm. The detectors being located at an angle of 45°relative to normal, the depth of analysis of calcium emission is about 20 lm.…”

Color stability in mortars and concretes. Part 1: Study on architectural mortars

“…Evaluations conducted on concrete interlocking blocks with inorganic pigments revealed denser structures when black pigment was used [12]. The flow of mortars with yellow, red, black or green pigments proportions varying from 3% to 12% was also evaluated; the experimental results showed that with yellow or red pigment, the flow decreased rapidly with increasing pigment content.…”