Loss of Prestress, Camber and Deflection of Non-Composite and Composite Prestressed Concrete Structures

Branson, Dan E.; Kripanarayanan, K. M.

doi:10.15554/pcij.09011971.22.52

Cited by 23 publications

(6 citation statements)

References 14 publications

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“…In this study, the linear behavior of reinforced concrete and prestressed concrete beams, anchorage slip, bilinear steel properties, and crack progress in concrete were examined. The results obtained from the prestressed concrete beams were similar to those in the experiment performed by Branson et al [8]. Kachlakev [9] studied beams externally strengthened with reinforced plastic carbon fiber (CFRC) with no stirrups being used in the experiment.…”

Section: Introductionsupporting

confidence: 74%

Analytical modeling of post-tensioned precast beam-to-column connections

Kaya

Arslan

2009

Materials & Design

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Section: Introductionsupporting

confidence: 74%

Analytical modeling of post-tensioned precast beam-to-column connections

Kaya

Arslan

2009

Materials & Design

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“…As for prestressed RAC members, Brandes and Kurama 123 tested 18 pretensioned NAC and RAC beams with 50 and 100% coarse RA. While only the results of this study are available, the effect of RA incorporation on the time‐dependent behavior of the beams was modest and could be predicted using the Branson Multiplier method 124 …”

Section: Recycled Aggregate Concrete Structuresmentioning

confidence: 95%

Toward a codified design of recycled aggregate concrete structures: Background for the new fib Model Code 2020 and Eurocode 2

Tošić

Torrenti

Sedran

et al. 2020

Structural Concrete

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The use of recycled aggregate (RA) to produce recycled aggregate concrete (RAC) is a proven way of decreasing the consumption of natural aggregate (NA) and the landfilling of construction and demolition waste. However, adoption of codes for the design of RAC and RAC structures has been lacking. Within the framework of the new fib Model Code 2020 and Eurocode 2, provisions for RAC can be adopted. Therefore, in this study, a comprehensive and critical review of literature on RAC is performed as well as own meta‐analyses of results. Material properties of RAC and structural behavior of reinforced and prestressed RAC members are analyzed, and based on the findings, code adjustments for RAC are proposed. The results show that, in order to incorporate RAC into design codes, changes are necessary in expressions for physical–mechanical properties (volumetric mass, modulus of elasticity, tensile strength, fracture energy, peak and ultimate strains, shrinkage strain and creep coefficient), durability‐related properties (minimum concrete cover for durability) and structural behavior (shear strength of members not requiring shear reinforcement and deflections). The recommendations are formulated in terms of the total mass substitution ratio of RA that can be classified as Type A according to standard EN 206 for concrete. The results and findings presented herein can provide an important contribution toward the codification of RAC use and the wider utilization of RA in construction.

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“…The American Concrete Institute (ACI) proposed a compressive strength development prediction model according to the time history based on an empirical formula given by Equation (1) [ 7 , 8 ].

…”

Section: Literature Reviewmentioning

confidence: 99%

The Time-Dependent Effect in Ultra High-Performance Concrete According to the Curing Methods

et al. 2022

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Ultra-high-performance concrete (UHPC) is required to develop multifunctional concrete structures such as long-span bridges. During the construction of long-span bridges, girders exhibit significant differences in age because they use different curing days in the precast process. In this study, the performances of UHPC were compared when subjected to long-term storage under various conditions after 3-day steam curing. At 365 days, the compressive strength of steam curing is 197 MPa, moist is 191 MPa, and the air is 169 MPa. Based on these differences, prediction models were proposed for long-term performances. Furthermore, the development characteristics of compressive strength, modulus of elasticity (MOE), and flexural strength until 365 days of age were analyzed under air, moist, and steam conditions. Steam curing exhibited the highest level of strength development while air curing showed the lowest. Flexural strength showed no significant difference depending on age because steel fibers were mixed with UHPC; they significantly contributed to flexural performance. The results would contribute to recognizing differences in strength between members at sites where UHPC is applied and to managing high-quality structures constructed using precast members. These research results are expected to contribute to efficient member production and process management during the construction of large structures such as super-long-span bridges.

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Loss of Prestress, Camber and Deflection of Non-Composite and Composite Prestressed Concrete Structures

Cited by 23 publications

References 14 publications

Analytical modeling of post-tensioned precast beam-to-column connections

Analytical modeling of post-tensioned precast beam-to-column connections

Toward a codified design of recycled aggregate concrete structures: Background for the new fib Model Code 2020 and Eurocode 2

The Time-Dependent Effect in Ultra High-Performance Concrete According to the Curing Methods

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