نتایج جستجو برای: fatigue cracking
تعداد نتایج: 80232 فیلتر نتایج به سال:
Cracking is one of the primary distresses for asphalt pavements. There are many types laboratory tests developed to evaluate cracking performance material, however, relatively little attention has been dedicated evaluating and correlating measured properties with actual pavement performance. The main objective this study investigate relationships between various binder/mixture (including both f...
improvements in the properties of ordinary sidewall compound (nr/br) with the addition of epdm by reactive processing method were evaluated. the results show that ozone resistance of these sidewalls was improved with increased addition of epdm. also the tensile strength and elongation-at-break were increased in comparison with nrbrepdm compounds that were made by non-reactive processing. sem ph...
This study aims to characterise fatigue cracking of two types waste-derived (bio-oil and LDPE) bitumen. Modified Paris’ law Griffith criterion were proposed investigate crack propagation initiation the Results show that bio-oil delays LDPE accelerates initiation, bitumen itself dominates unaged The did not take effects in altering bitumen’s performance after pressure ageing vessel (PAV) ageing....
<p>A prestressed concrete bridge was built in 1963 with BBRV cables. It has three spans and a total length of 134.8 m. Due to mining activities the loaded trucks weight 90 ton during 2012-2014 from 2019. Crack development been monitored manually 2020 strain gauges LVDTs. Cracks normally vary between 0.1 0.3 mm width grow time. In November some on showed alarming growth closed for traffic....
Measurements based on DC resistance have traditionally been used to monitor the reliability of electronic products. Unfortunately, DC resistance is not useful for detecting intermediate stages between a short and an open, such as a partially degraded interconnect. Under cyclic loading conditions, interconnect degradation is caused by fatigue cracking, which often initiates at the surface where ...
Database cracking has been an area of active research in recent years. The core idea of database cracking is to create indexes adaptively and incrementally as a side-product of query processing. Several works have proposed different cracking techniques for different aspects including updates, tuple-reconstruction, convergence, concurrency-control, and robustness. However, there is a lack of any...
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