Academic literature on the topic 'Age-Adjusted Effective Modulus'

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Journal articles on the topic "Age-Adjusted Effective Modulus"

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Khazanovich, L. "Age‐Adjusted Effective Modulus Method for Time‐Dependent Loads." Journal of Engineering Mechanics 116, no. 12 (1990): 2784–89. http://dx.doi.org/10.1061/(asce)0733-9399(1990)116:12(2784).

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Han, Bing, and Yuan Feng Wang. "Age-Adjusted Effective Modulus Method for Creep of High-Performance Concrete." Key Engineering Materials 302-303 (January 2006): 693–99. http://dx.doi.org/10.4028/www.scientific.net/kem.302-303.693.

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This paper discusses the suitability of using several creep theories of common concrete for creep of high-performance concrete (HPC). Based on the Age-Adjusted Effective Modulus method (AEMM) for creep of concrete, Improved Dischinger (ID) method and the Elastic Continuation and Plastic Flow (ECPF) theory for calculating relaxation coefficient and considering characteristics of HPC, a method is set up for calculating the creep of HPC under changing stresses, and comparing results gotten by the method with some experimental data, it can be considered that the above methods are suit for the calc
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Kovler, K. "Drying creep of concrete in terms of the age-adjusted effective modulus method." Magazine of Concrete Research 49, no. 181 (1997): 345–51. http://dx.doi.org/10.1680/macr.1997.49.181.345.

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Wang, Weinan, and Jinxin Gong. "New relaxation function and age-adjusted effective modulus expressions for creep analysis of concrete structures." Engineering Structures 188 (June 2019): 1–10. http://dx.doi.org/10.1016/j.engstruct.2019.03.009.

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Zvolánek, Lukáš, and Ivailo Terzijski. "Relaxation of Structural Concrete due to its Shrinkage in Terms of Age-Adjusted Effective Modulus Method." Key Engineering Materials 737 (June 2017): 471–76. http://dx.doi.org/10.4028/www.scientific.net/kem.737.471.

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This paper focuses on the calculation of residual stresses due to shrinkage with a tensile creep effect. Whereas the shrinkage of concrete causes stresses in the material, the tensile creep counteracts the shrinkage as a stress relaxation mechanism. The main objective of this paper is to evaluate the ageing coefficient c (referred to as Trost-Bazant Coefficient) reflecting the load history. The coefficient is used for the residual stress analysis by means of a simplified method called Age-adjusted Effective Modulus Method. The tensile creep effect was evaluated according to the rheological mod
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Batchelor, B. DeV, Jayanth Srinivasan, and Mark F. Green. "Losses in partially prestressed concrete." Canadian Journal of Civil Engineering 15, no. 5 (1988): 890–99. http://dx.doi.org/10.1139/l88-114.

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The calculation of prestress losses by the age-adjusted effective modulus method is analyzed and compared with the Ontario highway bridge design code predictions for partially prestressed concrete. Specifically, the effect of nonprestressed reinforcement on prestress losses is studied. The age-adjusted effective modulus method for calculating prestress losses is outlined, and plots of prestress losses versus partial prestressing ratio are presented and analyzed. It is shown that prestress losses decrease with increasing amounts of nonprestressed reinforcement. Also, the Ontario highway bridge
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Bae, Doo-Byong, Chang-Kook Oh, and Sok-Hwan Choi. "Experimental Verification of Age-adjusted Effective Modulus Method to Long-Term Behavior Estimation of Prestressed Composite Girders." Journal of Korean Society of Steel Construction 24, no. 5 (2012): 571–82. http://dx.doi.org/10.7781/kjoss.2012.24.5.571.

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Ge, Jun Ying, and Hao Zhang. "Practical Method for Concrete Creep Calculation Based on ANSYS." Advanced Materials Research 255-260 (May 2011): 1915–19. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.1915.

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For concrete bridge, creep effect throughout the whole process that from construction to the entire service life, and it has large effect on internal force and deformation of the bridge, therefore, accurate calculation of the effect is very meaningful. In this paper, we put up the detailed implementation calculation in the ANSYS based on “Age-Adjusted Effective Modulus Method (AEMM)”. Finally the author verified by the example.
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Zvolánek, Lukáš, and Ivailo Terzijski. "Methods Considering the Concrete Creep due to Shrinkage." Solid State Phenomena 259 (May 2017): 3–8. http://dx.doi.org/10.4028/www.scientific.net/ssp.259.3.

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Creep of concrete is a phenomenon that is not only significant in the long term, but also at young concrete. The paper deals with methods considering the tensile creep of concrete due to shrinkage. It was proved, that the tensile creep can be taken into account by simplified methods called Age-adjusted Effective Modulus Method with the ageing coefficient χvalue falling between 0.4 and 0.45. Calculated values were experimentally verified by means of Ring-test.
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Mu, Guang Bo, and Lian Guang Wang. "Deformation Calculation of Prestressed Steel Reinforced Concrete Beam under Long-Term Loading." Advanced Materials Research 243-249 (May 2011): 871–74. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.871.

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The deformation calculation formulas under long-term and different loading of prestressed steel reinforced concrete beams are built up by using age adjusted effective modulus method according to internal force equilibrium and strain harmony of section. Based on that, numerical methods are applied to calculate and analyze stress redistribution of steel and concrete, deformation of beam in different time slice, as well as the curves about how concrete strength, axial force, moment, volumetric percentage of steel and volumetric percentage of tendon affects mid-span deformation of long-term loadin
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Dissertations / Theses on the topic "Age-Adjusted Effective Modulus"

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Bowers, Susan Elizabeth. "Recommendations for Longitudinal Post-Tensioning in Full-Depth Precast Concrete Bridge Deck Panels." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/32644.

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Full-depth precast concrete panels offer an efficient alternative to traditional cast-in-place concrete for replacement or new construction of bridge decks. Research has shown that longitudinal post-tensioning helps keep the precast bridge deck in compression and avoid problems such as leaking, cracking, spalling, and subsequent rusting on the beams at the transverse panel joints. Current design recommendations suggest levels of initial compression for precast concrete decks in a very limited number of bridge configurations. The time-dependent effects of creep and shrinkage in concrete and
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Singh, Mahendra. "Long term and short term deflection of GFRP prestressed concrete slabs." 2014. http://hdl.handle.net/1993/23654.

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This thesis investigates the performance of GFRP pretensioned concrete slabs and compares their flexural behaviour with GFRP reinforced and steel prestressed concrete slabs. A total of 12 slabs were cast in this program. The slab mid-span deflections are theoretically predicted and the results indicate that the short-term response of GFRP prestressed concrete slabs can be predicted well by the existing methods. Long-term deflection behaviour has been estimated using the Age Adjusted Effective Modulus Method by incorporating three creep and shrinkage models. A large influence of creep and shrin
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Book chapters on the topic "Age-Adjusted Effective Modulus"

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Bažant, Zdeněk P., and Milan Jirásek. "Structural Effects of Creep and Age-Adjusted Effective Modulus Method." In Creep and Hygrothermal Effects in Concrete Structures. Springer Netherlands, 2018. http://dx.doi.org/10.1007/978-94-024-1138-6_4.

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Dabarera, Arosha, Liang Li, Jiahang Li, Vishvendra Singh Jamwal, Qifan Yang, and Vinh Dao. "Age-Adjusted Effective Elastic Modulus of High-Performance Concrete at Early Age." In RILEM Bookseries. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72921-9_1.

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Han, Bing, and Yuan Feng Wang. "Age-Adjusted Effective Modulus Method for Creep of High-Performance Concrete." In Environmental Ecology and Technology of Concrete. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-983-0.693.

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