Development of a new short-term concrete prism test method (SCPT) to improve predictability for potential alkali reactivity of aggregates
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Construction Materials Laboratory, Turkish Standard Institution, 06100 Ankara, Turkey
Department of Civil Engineering, Yildirim Beyazit University, 06760 Ankara, Turkey
Publication date: 2022-04-05
Cement Wapno Beton 26(6) 478-492 (2021)
This experimental study basically aims to come up with a new method [SCPT], which would be a reliable accelerated performance for predicting potential alkali reactivity of aggregates, because available test methods whether long or accelerated, have some drawbacks such as long test duration in the CPT [concrete prism test] and false tests results in the AMBT [accelerated mortar bar test]. The new method called as short-term concrete prism test [SCPT] has been designed with analysing the degree of correlation between the designed new methods and available test method by examining 32 types of aggregate, whose field performances can be observable. Common specifications of the SCPT includes 50 mm x 50 mm x 200 mm concrete prisms, 16 mm maximum aggregate size, storage temperature at 60°C and soak solution with 0.35N NaOH + 1% CaCl2 and takes only 28 days.
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