When brittle concrete has been used in engineering infrastructure, sudden structural failures can occur. The brittleness of concrete plays a critical role in many performance indexes. …

1990年11月1日 · The size-effect method to determine material fracture characteristics, as previously proposed by Bazant and extensively verified for normal strength concrete, is …

Concrete, however, is a brittle material with very low tensile stress, which limits its application. To solve this problem, reinforced concrete started to be used in the mid-nineteenth century. …

2021年12月19日 · The characteristic length lch and the material length Q under the three curing conditions and the long-term development of brittleness in the concrete indicated that steam …

In various concrete-rock composite structures, such as tunnel engineering, underground mining engineering, and support engineering, the interface between rock and concrete often exhibits …

Ductility formula, combining the four parameters of peak stress, residual stress, peak strain, and residual strain of concrete with different water-cement ratios, to obtain the relationship …

One method is using the ratio between the tension strength to compressive strength: the lower the ratio, the more brittle. Another is the linear portion in the stress-strain curve observed in...

2015年9月30日 · The time-dependent brittle deformation of concrete usually causes concrete to fail under constant stress that is well below its short-term strength over an extended period of …

2008年9月1日 · The classical shear theory, to a greater degree, corresponds to the failure of earth media and brittle materials (rock, concrete and others) along weak surfaces. So, numerous …

Brittleness is lack of ductility and for a brittle material there is no plastic deformation. The elastic stage is followed by immediate fracture. Typical brittle materials: glass, concrete, ceramics, …