High temperature behaviour of self-consolidating concrete

An investigation of high-volume fly ash concrete blended with slag subjected to elevated temperatures

“…In addition, at approximately 573 o C, the allotropic transformation of quartz-α into quartz-β occurred with an expansion (Fares et al, 2010). Further, the possible chemical transformations included decomposition of the cementing compound of CSH with its different phases, where cementing ability was lost.…”

Specimen size effect on the residual properties of engineered cementitious composites subjected to high temperatures

“…The behavior of ECC exposed to high temperature has in particular to be evaluated. When a cement based composite is exposed to high temperature, it causes a material degradation in the form of strength decrease, cracking, and in some cases, spalling [5]. Mechanical properties and microstructure of fire-damaged ECC on 50 mm cubic specimens were assessed by Sahmaran et al [6], and in that study it was concluded that the mechanical performance of fire-deteriorated ECC mixture is similar to or better than that of conventional concrete incorporating polypropylene or steel fibers.…”

The use of surface coating in enhancing the mechanical properties and durability of concrete exposed to elevated temperature

“…After exposure to 200°C, the residual compressive strength ratios of concrete increased from 98% to 101% after recuring for 90 days, while for concrete with SCC it increased from 98% to 107%. According to the results concluded by Fares et al, the porosity of concrete increased between 150 and 300°C due to the departure of water [26]. The microstructure of concrete deteriorated quickly.…”