The fracture behavior and microstructure of calcium aluminate cement concrete with various water-cement ratios

Using beam and ENDB specimens to evaluate fracture characteristics of wavy steel fiber‐reinforced self‐compacting concrete containing different coarse aggregate volumes

“…Chen et al 36 have claimed that the fracture toughness increases by up to 40% with an increase in the CA volume and decreases at higher volumes. Like earlier researches, 89–91 nonlinear relations established in the present study between the fracture toughness and compressive strength have the following form shown also in Figure 8B.…”

“…According to CEB‐FIP, 88 the fracture energy can be expressed as a relation based on the compressive strength; this has also been shown in the studies of some recent researchers 89–91 . The present study has presented a relationship between and the compressive strength ( ) with varying WSF volumes in different CA volumes (Figure 5).…”

“…According to CEB-FIP, 88 the fracture energy can be expressed as a relation based on the compressive strength; this has also been shown in the studies of some recent researchers. [89][90][91] The present study has presented a relationship between G F and the compressive strength (f C ) with varying WSF volumes in different CA volumes (Figure 5). As a Figure 5, the fracture energy-compressive strength relation established in the present study shows that when the fiber volume increases, the G F trend is descending at G30 and G40 and ascending at G50 and G60.…”

Physicochemical, Mineralogical, and Mechanical Properties of Calcium Aluminate Cement Concrete Exposed to Elevated Temperatures

“…After the complete mixing of the materials, the slump test was conducted on the fresh concrete in accordance with ASTM 143 [ 22 ] to evaluate the rheological properties of the CACC. Considering that in the previous works [ 18 ], the effect of the water-to-cement ratio on the mechanical and fracture properties of CACC was addressed, the water-to-cement ratio of 0.4 was considered in this work given the better mechanical and fracture behavior it provides for the concrete. Note that the slump test was conducted on all the mix designs, and to obtain the allowable slump values based on the standards, the amount of the superplasticizer was determined.…”

“…Data about this subject are scarce in the literature. The impact of water-to-cement ratio on the mechanical features of CACC was explored in the previous work of the authors [ 18 ], where the proper feature of this concrete at w/c = 0.4 was observed. Therefore, the mix with this w/c ratio was also regarded as the standard mix in this work.…”