The flexural strength, firstcrackstrength, modulus of elasticity and flexural toughness of high-strength lightweight fiber-reinforced concrete were investigated.
Under the action of tensile stress and tensile stress, the bolt with relatively low strength will crackfirst, and then the fatigue fracture will occur.
在拉应力和应拉力交替的作用下,强度相对较低的螺栓会先产生裂纹,进而发生疲劳断裂。
3
Not only the strength at firstcrack and ultimate strength can be calculated, but the stress-strain curve of composite material can be established.