Effects of Loading Rate on Flexural-tension Properties and Uniaxial Compressive Strength of Micro-su

来源 :Journal of Wuhan University of Technology(Materials Science | 被引量 : 0次 | 上传用户:lxxfeng
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The major objective of this research was to discuss the effects of loading rate on the flexural-tension properties and uniaxial compressive strength of micro-surfacing mixture using three-point bending test and uniaxial compressive test respectively. As a preventive maintenance surface treatment on asphalt pavement, micro-surfacing was formed on the basis of the ISSA recommendation of an optimum micro-surfacing design. Tests were conducted over a wide range of temperature to investigate the difference of properties from low loading rate to a relatively high loading rate. Three-point bending test was used to study the flexural strength, strain and modulus of micro-surfacing mixture, and uniaxial compressive test was carried out to obtain the relationship between strength and the loading rate as well as temperature. The experimental results showed that flexural strength at high loading rate was larger than that at low loading rate. The flexural strength difference between low and high loading rate enlarged when the temperature rose. The flexural strain at high loading rate increased compared with results of the low loading rate. Results of the flexural modulus revealed that micro-surfacing mixture exhibited better anti-cracking characteristic at low temperature when given a relatively low loading rate. Results of uniaxial compressive test revealed that the strength difference of micro-surfacing among different loading rates increased with the increase of temperature. The logarithm relationship between the strength and loading rate over a wide range of temperature was obtained to compare the experimental and predicted values, which resulting in a reasonable consistency. The major objective of this research was to discuss the effects of loading rate on the flexural-tension properties and uniaxial compressive strength of micro-surfacing mixture using three-point bending test and uniaxial compressive test respectively. As a preventive maintenance surface treatment on asphalt pavement , micro-surfacing was formed on the basis of the ISSA recommendation of an optimum micro-surfacing design. Tests were conducted over a wide range of temperature to investigate the difference of properties from low loading rate to a relatively high loading rate. Three-point bending test was used to study the flexural strength, strain and modulus of micro-surfacing mixture, and uniaxial compressive test was carried out to obtain the relationship between strength and the loading rate as well as temperature. The experimental results showed that flexural strength at high loading rate was larger than that at low loading rate. The flexural strength difference between low and high lo The flexural strain at high temperature when given a relatively low loading rate. The flexural strain at high temperature when given a relatively low loading rate loading rate. Results of uniaxial compressive test revealed that the strength difference of micro-surfacing among different loading rates increased with the increase of temperature. The logarithm relationship between the strength and loading rate over a wide range of temperature was obtained to compare the experimental and predicted values, which resulting in a reasonable consistency.
其他文献
本文所指晚元古代时限为距今1000—600百万年。中国晚元古代可分为两个阶段,自1000—800百万年一段暂不建纪,因为这一时期的地层在全国的对比还存在很多问题,生物面貌远不明
<正> 根据模拟試驗和野外观察,岩石破碎常导因于剪力破裂面。这些剪力破裂面常成两組出現,相交呈X型;但常由于旋轉应力和非均匀应变关系,一組常比另一組发育为好。挤压力作用
引言 岩石块体的稳定分析在岩体工程地质力学研究中已经逐渐形成一个重要的课题,很多文献在这方面进行了探讨。 在岩石块体的稳定分析时,由于多组结构面的约束,往往遇到超静
热力去毛刺法德文叫“Thermische Entgrat-Meltio一de”,简称为TEM;国内有的称这种工艺为“高温去毛刺法”,这与其含义不太相符;西德DIN标准分类,属于化学范围内去毛刺法;英
氨气氮化是使钢表面硬化,提高耐磨耗、耐疲劳强度的方法之一。这种方法,自1923年由A.Fry发表以后已有五十多年,至今尚在利用,实属伟大的发明。以后,于1932年由Bernhard Berg
石吉高速公路是泉州至南宁国家高速公路江西境内石城至吉安的一段新建工程,路线全长190.719km;它的建设对于完善江西省高速公路网的布局,加快江西省南部地区社会经济发展,加
由高压造型紧实的湿型砂的扫描电镜图显示砂粒破裂的开始和延续,并作出一定量的评价。通过临界紧实压力的作用,达到临界的紧实密度,在这时第一批颗粒开始破裂。影响这个过程
锚固工程工后稳定性分析是边坡领域常遇到的一个问题,然而在类似问题的分析中人们往往忽视了锚固工程当前应力水平的变化。这有时会造成边坡稳定性分析时对既有工程的锚固应
一、概况 低碳低温回火高强度钢(≤0.25%C),即具有高的强度,又具有高的韧性、塑性和断裂韧性等,已被国内外的实际应用和试验研究所证实。18Cr2Ni4WA(18Cr2Ni4MoA)、25Cr2Ni4W
本空气静压轴承应用于游丝测试设备——游丝弹性后效仪。该仪器工作时转速很低(可看作零转速),支承系统的负荷小(负荷不到10克),但要求支承系统具有极低的摩擦力矩,特别是要