改造施工：纤维混凝土的进展

English | 2024 | 978-3-031-70145-0 | 858 pages| Epub PDF (True) | 354 MB

Macro-Synthetic Fiber Reinforced Concretes (MSFRCs) have emerged not long ago if compared with other types of Fiber Reinforced Concretes (FRCs). They have mainly used in non-structural works but in nowadays, MSFRCs are becoming gradually accepted in the structural field. To reach this situation, a characterization of this complex material is needed and although several authors have contributed to the study of their behaviour, many aspects require further investigation in this area. This experimental study addresses the effect of environmental temperatures on the tensile behavior of MSFRC after a short-period of exposure. To carry out this, one type of concrete matrix is selected and reinforced with 8 kg/m3 of a commercial Class II macro-synthetic fiber. Uniaxial tension tests are conducted on notched cylinders of MSFRC obtained by coring from standard prismatic beams. The tests are performed at the temperatures ranging from –30 ℃ to 40 ℃ using an environmental chamber to maintain controlled temperature conditions throughout the experiments. The results show that temperature variations influence on the tension behavior of MSFRC. High temperatures lead to a decline in MSFRC performance, whereas an increase is noted at temperatures below zero.

English | 2024 | 978-3-031-70145-0 | 858页| Epub PDF（True）|与其他类型的纤维增强混凝土（FRCs）相比，不久前出现了354 MB的宏合成纤维增强混凝土。它们主要用于非结构工程，但如今，MSFRC在结构领域逐渐被接受。为了达到这种情况，需要对这种复杂材料进行表征，尽管几位作者对其行为的研究做出了贡献，但许多方面需要在这一领域进行进一步的研究。这项实验研究探讨了环境温度对短时间暴露后MSFRC拉伸行为的影响。为了实现这一点，选择了一种混凝土基质，并用8kg/m3的商用II级宏合成纤维进行加固。对通过标准棱柱梁取芯获得的MSFRC切口圆柱体进行了单轴拉伸试验。测试在-30℃至40℃的温度范围内进行，使用环境室在整个实验过程中保持受控的温度条件。结果表明，温度变化对MSFRC的拉伸行为有影响。高温会导致MSFRC性能下降，而在零度以下的温度下会出现性能上升。

---

Download from free file storage

 Download from nitroflare.com  Download from rapidgator.net

---

我要反馈

---

本站不对文件进行储存，仅提供文件链接，请自行下载，本站不对文件内容负责，请自行判断文件是否安全，如发现文件有侵权行为，请联系管理员删除。