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Steel-Reinforced Grout (SRG) Strengthening of Shear-Critical RC Beams (2019)
Journal Article
Thermou, G., Papanikolaou, V., Lioupis, C., & Hajirasouliha, I. (2019). Steel-Reinforced Grout (SRG) Strengthening of Shear-Critical RC Beams. Construction and Building Materials, 216, 68-83. doi:10.1016/j.conbuildmat.2019.04.259

This paper investigates the effectiveness of Steel-Reinforced Grout (SRG) jackets to strengthen shear critical reinforced concrete (RC) beams. Eleven RC beams were tested in three-point bending. Key parameters of investigation were the strengthening... Read More about Steel-Reinforced Grout (SRG) Strengthening of Shear-Critical RC Beams.

Design-oriented models for concrete columns confined by steel-reinforced grout jackets (2018)
Journal Article
Thermou, G. E., & Hajirasouliha, I. (2018). Design-oriented models for concrete columns confined by steel-reinforced grout jackets. Construction and Building Materials, 178, 313-326. doi:10.1016/j.conbuildmat.2018.05.088

This paper investigates the axial stress–strain response of concrete confined with Steel-Reinforced Grout (SRG) jackets comprising of Ultra-High Tensile Strength Steel textiles embedded in an inorganic binder. Brittle, semi-ductile and ductile stress... Read More about Design-oriented models for concrete columns confined by steel-reinforced grout jackets.

Seismic rehabilitation of substandard R.C. buildings with masonry infills (2018)
Journal Article
Pardalopoulos, S. I., Pantazopoulou, S. J., & Thermou, G. E. (2018). Seismic rehabilitation of substandard R.C. buildings with masonry infills. Journal of Earthquake Engineering, doi:10.1080/13632469.2018.1453397

Seismic deformation demands are localized in areas of stiffness discontinuity, such as in the soft storys of frame structures, where disproportionate damage is often reported in post-earthquake reconnaissance. In many parts of the world, this damage... Read More about Seismic rehabilitation of substandard R.C. buildings with masonry infills.

Compressive behaviour of concrete columns confined with steel-reinforced grout jackets (2017)
Journal Article
Thermou, G. E., & Hajirasouliha, I. (2018). Compressive behaviour of concrete columns confined with steel-reinforced grout jackets. Composites Part B: Engineering, 138, 222-231. doi:10.1016/j.compositesb.2017.11.041

This paper investigates the compressive strength of concrete columns confined with a new jacketing system using high strength steel reinforced fabrics embedded in an inorganic matrix (SRG). A comprehensive experimental programme was conducted on 52 c... Read More about Compressive behaviour of concrete columns confined with steel-reinforced grout jackets.

Experimental investigation of substandard RC columns confined with SRG jackets under compression (2017)
Journal Article
Thermou, G. E., Katakalos, K., & Manos, G. (2018). Experimental investigation of substandard RC columns confined with SRG jackets under compression. Composite Structures, 184, 56-65. doi:10.1016/j.compstruct.2017.09.082

This paper aims to explore the behaviour of substandard reinforced concrete (RC) columns confined with Steel-Reinforced Grout (SRG) jackets under monotonically increasing uniaxial compression. A total of 24 specimens of short RC columns of square cro... Read More about Experimental investigation of substandard RC columns confined with SRG jackets under compression.

Retrofit Design Methodology for Substandard R.C. Buildings with Torsional Sensitivity (2017)
Journal Article
Thermou, G. E., & Psaltakis, M. (2018). Retrofit Design Methodology for Substandard R.C. Buildings with Torsional Sensitivity. Journal of Earthquake Engineering, 22(7), 1233-1258. doi:10.1080/13632469.2016.1277569

Recent earthquakes have revealed the susceptibility of non-ductile reinforced concrete (R.C.) buildings with deficiencies related to stiffness and/or mass irregularities in plan and elevation. This paper proposes a design methodology for the seismic... Read More about Retrofit Design Methodology for Substandard R.C. Buildings with Torsional Sensitivity.

Background to the European seismic design provisions for retrofitting RC elements using FRP materials (2015)
Journal Article
Pantazopoulou, S. J., Tastani, S. P., Thermou, G. E., Triantafillou, T., Monti, G., Bournas, D., & Guadagnini, M. (2016). Background to the European seismic design provisions for retrofitting RC elements using FRP materials. Structural Concrete, 17(2), 194-219. doi:10.1002/suco.201500102

This paper is a comprehensive background document on the state of the art in European seismic design provisions which was assembled by fib committee 5.1 to support the development of design guidelines regarding the use of externally applied fibre rei... Read More about Background to the European seismic design provisions for retrofitting RC elements using FRP materials.

Influence of the cross section shape on the behaviour of SRG-confined prismatic concrete specimens (2015)
Journal Article
Thermou, G. E., Katakalos, K., & Manos, G. (2016). Influence of the cross section shape on the behaviour of SRG-confined prismatic concrete specimens. Materials and Structures, 49(3), 869-887. doi:10.1617/s11527-015-0545-2

The effectiveness of the steel-reinforced grout (SRG) jacketing technique in increasing both strength and deformation capacity has been substantiated by experimental evidence [1-3]. What it has not been addressed yet is the influence of the cross sec... Read More about Influence of the cross section shape on the behaviour of SRG-confined prismatic concrete specimens.

Flexural behaviour of reinforced concrete jacketed columns under reversed cyclic loading (2014)
Journal Article
Thermou, G. E., Papanikolaou, V. K., & Kappos, A. J. (2014). Flexural behaviour of reinforced concrete jacketed columns under reversed cyclic loading. Engineering Structures, 76, 270-282. doi:10.1016/j.engstruct.2014.07.013

The objective of the present study is the development of an analytical model for predicting the response under reversed cyclic loading of structural members with ‘old-type’ detailing, strengthened with reinforced concrete (RC) jacketing. The analytic... Read More about Flexural behaviour of reinforced concrete jacketed columns under reversed cyclic loading.

Behaviour of rehabilitated RC beams with self-compacting concrete jacketing – Analytical model and test results (2014)
Journal Article
Chalioris, C. E., Thermou, G. E., & Pantazopoulou, S. J. (2014). Behaviour of rehabilitated RC beams with self-compacting concrete jacketing – Analytical model and test results. Construction and Building Materials, 55, 257-273. doi:10.1016/j.conbuildmat.2014.01.031

The use of thin reinforced self-compacting concrete jackets as a method to repair and strengthen under-designed flexural concrete members is investigated by means of experimental and analytical studies. The experimental component comprises 20 beam te... Read More about Behaviour of rehabilitated RC beams with self-compacting concrete jacketing – Analytical model and test results.

Concrete confinement with steel-reinforced grout jackets (2014)
Journal Article
Thermou, G. E., Katakalos, K., & Manos, G. (2015). Concrete confinement with steel-reinforced grout jackets. Materials and Structures, 48(5), 1355-1376. https://doi.org/10.1617/s11527-013-0239-6

The potential of steel fiber reinforced jackets combined with inorganic matrix (cementitious grout matrix) as an alternative strengthening system to fiber-reinforced polymer (FRP) jackets was investigated experimentally in the current study. For this... Read More about Concrete confinement with steel-reinforced grout jackets.

Screening criteria to identify brittle R.C. structural failures in earthquakes (2012)
Journal Article
Pardalopoulos, S. J., Thermou, G. E., & Pantazopoulou, S. J. (2013). Screening criteria to identify brittle R.C. structural failures in earthquakes. Bulletin of Earthquake Engineering, 11(2), 607-636. doi:10.1007/s10518-012-9390-7

Collapse of structures in severe earthquakes is synonymous with loss of vertical load bearing capacity in the columns and walls of the structural system. This paper identifies criteria that could be used in the context of preliminary assessment in... Read More about Screening criteria to identify brittle R.C. structural failures in earthquakes.

Global Interventions for Seismic Upgrading of Substandard RC Buildings (2011)
Journal Article
Thermou, G. E., Pantazopoulou, S. J., & Elnashai, A. S. (2012). Global Interventions for Seismic Upgrading of Substandard RC Buildings. Journal of Structural Engineering, 138(3), 387-401. https://doi.org/10.1061...%29st.1943-541x.0000474

A methodology is developed in this paper for the design and proportioning of interventions for seismic upgrading of substandard reinforced-concrete (RC) buildings. The retrofit approach is presented in the form of a simple design tool that aims towa... Read More about Global Interventions for Seismic Upgrading of Substandard RC Buildings.

Assessment indices for the seismic vulnerability of existing R.C. buildings (2010)
Journal Article
Thermou, G. E., & Pantazopoulou, S. J. (2011). Assessment indices for the seismic vulnerability of existing R.C. buildings. Earthquake Engineering and Structural Dynamics, 40(3), 293-313. doi:10.1002/eqe.1028

The seismic vulnerability of old multi‐storey reinforced concrete (R.C.) buildings reinforced with substandard details is assessed as a function of interstorey drift demand imposed by the design earthquake while considering brittle termination of ela... Read More about Assessment indices for the seismic vulnerability of existing R.C. buildings.

Design and assessment spectra for retrofitting of RC buildings (2010)
Journal Article
Thermou, G. E., Elnashai, A. S., & Pantazopoulou, S. J. (2010). Design and assessment spectra for retrofitting of RC buildings. Journal of Earthquake Engineering, 14(5), 743-770. doi:10.1080/13632460903410764

This article presents a novel approach for deriving Retrofit Design Spectra (RDS) that are intended for use in preliminary development and assessment of seismic upgrading scenarios of existing structures. The new spectral representation relates the c... Read More about Design and assessment spectra for retrofitting of RC buildings.

Fiber-Reinforced Polymer Retrofitting of Predamaged Substandard RC Prismatic Members (2009)
Journal Article
Thermou, G. E., & Pantazopoulou, S. J. (2009). Fiber-Reinforced Polymer Retrofitting of Predamaged Substandard RC Prismatic Members. Journal of Composites for Construction, 13(6), 535-546. doi:10.1061/(asce)cc.1943-5614.0000057

An experimental study was conducted to investigate the efficiency of FRP jackets in upgrading the seismic behavior of lightly reinforced concrete prismatic members previously damaged under a combination of axial compression and a reversed cyclic late... Read More about Fiber-Reinforced Polymer Retrofitting of Predamaged Substandard RC Prismatic Members.

Flexural Behavior of Brittle RC Members Rehabilitated with Concrete Jacketing (2007)
Journal Article
Thermou, G., Pantazopoulou, S., & Elnashai, A. (2007). Flexural Behavior of Brittle RC Members Rehabilitated with Concrete Jacketing. Journal of Structural Engineering, 133(10), 1373-1384. doi:10.1061/(asce)0733-9445(2007)133:10(1373)

The composite flexural action of prismatic reinforced concrete (RC) members repaired/strengthened by RC jacketing was modeled with a dual-section approach. The model considers the relative slip at the interface between the existing member and the jac... Read More about Flexural Behavior of Brittle RC Members Rehabilitated with Concrete Jacketing.

Design Methodology for Seismic Upgrading of Substandard Reinforced Concrete Structures (2007)
Journal Article
Thermou, G. E., Pantazopoulou, S. J., & Elnashai, A. S. (2007). Design Methodology for Seismic Upgrading of Substandard Reinforced Concrete Structures. Journal of Earthquake Engineering, 11(4), 582-606. doi:10.1080/13632460601031573

This article presents a design methodology for seismic upgrading of existing reinforced concrete (RC) buildings. The methodology is based on the modification of the deflected shape of the structure so as to achieve a near-uniform distribution of inte... Read More about Design Methodology for Seismic Upgrading of Substandard Reinforced Concrete Structures.

Metallic fabric jackets: an innovative method for seismic retrofitting of substandard RC prismatic members (2006)
Journal Article
Thermou, G., & Pantazopoulou, S. (2007). Metallic fabric jackets: an innovative method for seismic retrofitting of substandard RC prismatic members. Structural Concrete, 8(1), 35-46. doi:10.1680/stco.2007.8.1.35

This paper presents the results of a recent experimental research study where metallic (high-strength steel cord) fabric jackets (MF jackets) were utilised for the seismic upgrading of substandard reinforced concrete members. The proposed interventio... Read More about Metallic fabric jackets: an innovative method for seismic retrofitting of substandard RC prismatic members.

Seismic retrofit schemes for RC structures and local-global consequences (2006)
Journal Article
Thermou, G., & Elnashai, A. (2006). Seismic retrofit schemes for RC structures and local-global consequences. Progress in Structural Engineering and Materials, 8(1), 1-15. doi:10.1002/pse.208

A review of repair schemes for reinforced concrete frame buildings is presented in this paper, within the context of global objectives of the intervention process. Local as well as global intervention measures are discussed and their technological ap... Read More about Seismic retrofit schemes for RC structures and local-global consequences.