Furthermore, the length of plateau period of stress-strain curve is obviously shortened and the area surrounded by the curve is also significantly reduced. The dynamic peak stress, peak strain and impact toughness of PVA/ECC decrease significantly with ...
stress strain curve 4 结论 1 本文采用绝对体积法初次试配了 PVA 纤维增强水泥基复合材料 对材料的投放顺序和 搅拌工艺进行了详细的描述 并考虑了其对流动 性的影响 2 讨论了不同掺合料对流动性 抗压强度 直接拉伸应力 应变曲线及其试验结果的影响 3 本文配制的 PVA 纤维增强水泥基复合 材料的极限拉应变最大...
Hu YF. Recycled coarse aggregate concrete pressed stress-strain curve experimental research after high temperature and finite element heat exchange analysis[D]. Guangxi University, (2012). GB/T 50081–2002 Standard for test methods of mechanical properties of ordinary concrete [S]. Beijing: China Bu...
At lower confining pressure,PVA fiber content by volume has some effect on the decreased section of stress-strain curve. According to test results,the paper establishes formula of confining pressure with ultimate strength and axial peak strain respectively. 展开 关键词: PVA high Performance fiber ...
(a) Effect of PVA content on tensile strength; (b) Stress-strain curves; (c) Young's modulus, E, calculated in the initial linear range from the stress-strain curves; (d) Fracture energy. 3.6. Toughness of PVA/PAM hydrogels Tough hydrogels usually possess remarkable energy dissipation, ...
(SPE:4TiO2). From theTGAcurve least weight loss has been observed for CPE-II indicating high thermal stability compared to other systems. Stress–strain curve of the prepared samples confirm the enhancement oftensile strengthin CPE-II compared to CPE-I and SPE. Conductivity studies show that ...
Fire resistances of the mixtures are then quantified in terms of the residual mechanical properties (strength, stress-strain curve, deflection, and stiffness) and mass loss. The role of PVA fibers and fly ash is discussed through the analysis of microstructure and fiber-matrix interactions as a ...
图1 PVA-ECC的应力—应变关系曲线及裂缝宽度Fig.1 Typical tensile stress-strain-crack width relationship of PVA-ECC 图2 能量平衡概念下纤维桥联裂缝的σ-δ曲线Fig.2 Energy balance concept on fiber bridgingstress-crack opening σ-δ curve 1 多重饱和裂纹破坏的细观力学准则 研究表明纤维增强水泥基复合材...
The tests such as contact angle, rotational viscosity, temperature scanning, multiple stress creep and recovery (MSCR) and the linear amplitude sweep (LAS) are conducted to study the compatibility and high temperature rheological properties of original PVA fiber (T) and surface treated PVA fiber (...
https://doi.org/10.1016/j.matdes.2020.109094Get rights and content Under a Creative Commonslicense open access Highlights • 3D printed PVA with hexagonal boron nitride and bacterial cellulose were promising for bone tissue engineering applications. ...