Experimental verification of indirect tests for stress-crack opening curve of concrete in tension from a round robin test: application to railway sleeper elements
نویسندگان
چکیده
Abstract This paper presents experimental verification of indirect tests for the determination stress-crack opening curve concrete, based on method described in RILEM TC 187-SOC report and submitted to ACI Committee 446 Fracture Toughness Testing Concrete, which relies standard cohesive model. In such method, a bilinear approximation softening is determined from three-point bending notched specimens under crack-mouth-opening-displacement control tensile splitting tests, produces good predictions complete crack evolution. The current work focusses brittleness length, directly related parameters linear defined by first branch curve, one main fracture since it controls behaviour thin cracks. length can be obtained simple version experiments conducted up peak load, thus, favouring its application industry. particular, this results round-robin test carried out collaboration with Spanish Association Railway Sleeper Element Manufacturers determine concrete. A specific implementation has been proposed order perform using facilities available all factories. have satisfactory, supporting viability proposals. Moreover, developed allows concrete easily railway sleeper element
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ژورنال
عنوان ژورنال: Materials and Structures
سال: 2022
ISSN: ['1359-5997', '1871-6873']
DOI: https://doi.org/10.1617/s11527-022-02050-3