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Browsing by Author "Floyd, R.W."

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Browsing by Author "Floyd, R.W."

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    Effect of concrete compressive strength on transfer length 
    Ramirez-Garcia, Alberto T.; Floyd, R.W.; Hale, W. M.; Martí Vargas, José Rocío (Elsevier, 2016)
    [EN] This paper examines the effect of concrete compressive strength on the transfer length of prestressing strands. The paper includes the results from several research projects conducted at the University of Arkansas ...
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    Influence of concrete strength on development length of prestressed concrete members 
    Ramirez-Garcia, Alberto T.; Floyd, R.W.; Hale, W. M.; Martí Vargas, José Rocío (Elsevier, 2016)
    [EN] Fifty seven prestressed concrete beams were fabricated at the University of Arkansas (UA) to determine the influence of concrete strength on the development length of seven wire prestressing strand. The variables ...
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    Measured Transfer Lengths of 0.7 in. (17.8 mm) Strands for Pretensioned Beams 
    Dang, C.N.; Floyd, R.W.; Hale, W. M; Martí Vargas, José Rocío (American Concrete Institute, 2016-01)
    [EN] The use of 0.7 in. (17.8 mm), Grade 270 (1860) prestressing strands has advantages over 0.5 and 0.6 in. (12.7 and 15.22 mm) strands. This study provides design guidelines for estimating transfer length of 0.7 in. (17.8 ...
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    Spacing requirements of 0.7 in. (18 mm) diameter prestressing strands 
    Dang, C.N.; Floyd, R.W.; Hale, W.M.; Martí Vargas, José Rocío (2016)
    [EN] The use of 0.7 in. (18 mm) diameter strands for pretensioned concrete girders is advantageous when increasing the flexural capacity and extending girder spans. The current codes have no design guidelines for predicting ...
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    Temperature Gradients in Bridge Concrete I-Girders under Heat Wave 
    Hagedorn, R.; Martí Vargas, José Rocío; Dang, C.N.; Hale, W.M.; Floyd, R.W. (American Society of Civil Engineers, 2019-08-01)
    [EN] This paper presents an experimental research work to determine temperature gradients in concrete bridge girders under natural environmental conditions. Three AASHTO Type I-girders having different configurations (with ...