Ramirez-Garcia, Alberto T.; Dang, Canh N.; Hale, W. Micah; Martí Vargas, José Rocío(Elsevier, 2017)
[EN] In pretensioned concrete members, the bond between prestressing strands and concrete in the transfer zone is necessary to ensure the two materials can work as a composite material. This study develops a computer program ...
Ramirez-Garcia, Alberto T.; Dang, C.N.; Deschenes, R.A.; Hale, W. M.; Martí Vargas, José Rocío(American Concrete Institute, 2018)
[EN] Transfer length is a significant parameter in the design of pretensioned
concrete members. This study reports the measured transfer
length of 15.2 mm (0.6 in.) prestressing strands. Twenty-four pretensioned
concrete ...
Dang, Canh N.; Hale, W. Micah; Martí Vargas, José Rocío(Elsevier, 2017)
[EN] The use of 18-mm prestressing strands is advantageous in the construction of long-span bridges. Transmission length is a significant parameter in the design of pretensioned concrete members. This study provides a ...
Dang, Canh N.; Martí Vargas, José Rocío; Hale, W. Micah(Techno-Press, 2020-10-10)
[EN] Pretensioned concrete (PC) is widely used in contemporary construction. Bond of prestressing strand is significant for composite-action between the strand and concrete in the transfer and flexural-bond zones of PC ...
[EN] The bond between prestressing strands and concrete in the transfer zone of pretensioned concrete members is a complicated mechanism. Concrete creep and shrinkage are dominant time-dependent factors that affect the ...
Kareem, Rahman S; Alsalman, Ali; Dang, Canh N.; Martí Vargas, José Rocío; Hale, W. Micah(American Concrete Institute, 2022-05)
[EN] Ultra-high-performance concrete (UHPC) is characterized by high durability and enhanced mechanical properties. However, proprietary UHPC is not an eco-friendly material due to its high cement content. To improve these ...
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 ...
García Segovia, Purificación; Harrington, Robert J.; Han-Seok Seo(Elsevier, 2015-01)
This study aimed to determine whether there is an interaction between small (i.e., table setting) and large (i.e., eating location) scales of the eating environments in affecting food acceptance and consumption. An ...
The use of 0.7 in. (17.8 mm), Grade 270 (1860) prestressing strands in construction is slow regardless of the engineering advantages of these types of strands. The limited research data and unavailable design guidelines ...
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 ...
Alsalman, Ali; Dang, Canh N.; Martí Vargas, José Rocío; Hale, W. Micah(Elsevier, 2020-01)
[EN] Ultra-High Performance Concrete (UHPC) offers innovative applications to concrete structures based on enhanced mechanical properties. The use of local materials is necessary to reduce the UHPC cost and save materials ...
Dang, Canh N.; Floyd, Royce W.; Hale, W. Micah; Martí Vargas, José Rocío(Thomas Telford Ltd., 2018)
[EN] Development length of prestressing strands is a significant parameter in the design of pretensioned concrete members.
The adequacy of the code equations used to predict the development length needs to be verified when ...
Dang, C.N.; Hale, W. M.; Martí Vargas, José Rocío(Elsevier, 2018)
[EN] The use of 18-mm prestressing strands has extensive advantages in building and bridge construction. Strand bond is a critical factor that constitutes the strand behavior in pretensioned concrete girders and directly ...
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 ...