Research Repository

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Effect of curing conditions on the pore solution and carbonation resistance of alkali-activated fly ash and slag pastes (2018)
Journal Article
Nedeljković, M., Ghiassi, B., van der Laan, S., Li, Z., & Ye, G. (2019). Effect of curing conditions on the pore solution and carbonation resistance of alkali-activated fly ash and slag pastes. Cement and Concrete Research, 116, 146-158. doi:10.1016/j.cemconres.2018.11.011

The effect of curing conditions (sealed and unsealed) on the pore solution composition and carbonation resistance of different binary alkali-activated fly ash (FA) and ground granulated blast furnace slag (GBFS) pastes is investigated in this study.... Read More

CO2 binding capacity of alkali-activated fly ash and slag pastes (2018)
Journal Article
Nedeljković, M., Ghiassi, B., Melzer, S., Kooij, C., Laan, S. V. D., & Ye, G. (in press). CO2 binding capacity of alkali-activated fly ash and slag pastes. Ceramics International, doi:10.1016/j.ceramint.2018.07.216. ISSN 0272-8842

Quantification of the CO2 binding capacity of reinforced concrete is of high importance for predicting the carbonation potential and service life of these structures. Such information is still not available for alkali activated materials that have re... Read More

Fiber-to-mortar bond behavior in TRM composites: effect of embedded length and fiber configuration (2018)
Journal Article
Dalalbashi, A., Ghiassi, B., Oliveira, D. V., & Freitas, A. (2018). Fiber-to-mortar bond behavior in TRM composites: effect of embedded length and fiber configuration. Composites Part B: Engineering, 152, (43-57). doi:10.1016/j.compositesb.2018.06.014. ISSN 1359-8368

The use of Textile Reinforced Mortar (TRM) composites for Externally Bonded Reinforcement (EBR) of reinforced concrete (RC) and masonry structures has attracted several attentions during the last years. The effectiveness of these composites in struct... Read More

Bond behavior in NSM-strengthened masonry (2018)
Journal Article
Maljaee, H., Ghiassi, B., & Lourenço, P. B. (2018). Bond behavior in NSM-strengthened masonry. Engineering Structures, 166, doi:10.1016/j.engstruct.2018.03.091. ISSN 0141-0296

Near Surface Mounted (NSM) reinforcement is an interesting technique for seismic strengthening of masonry and historical structures. Despite having several advantages compared to conventional techniques, little attention has been given to understandi... Read More

Effect of test setup on the fiber-to-mortar pull-out response in TRM composites: experimental and analytical modeling (2018)
Journal Article
Dalalbashi, A., Ghiassi, B., Oliveira, D. V., & Freitas, A. (2018). Effect of test setup on the fiber-to-mortar pull-out response in TRM composites: experimental and analytical modeling. Composites Part B: Engineering, 143, doi:10.1016/j.compositesb.2018.02.010. ISSN 1359-8368

Textile-reinforced mortars (TRM) have recently received significant attention for the externally bonded reinforcement (EBR) of masonry and reinforced concrete structures. The fiber-to-mortar bond, the TRM-to-substrate bond, and the mechanical propert... Read More

Micromechanical modeling of tension stiffening in FRP-strengthened concrete elements (2018)
Journal Article
Ghiassi, B., Soltani, M., & Rahnamaye Sepehr, S. (2018). Micromechanical modeling of tension stiffening in FRP-strengthened concrete elements. Journal of Composite Materials, 52(19), (2577-2596). doi:10.1177/0021998317751248. ISSN 0021-9983

This article presents a micromodeling computational framework for simulating the tensile response and tension-stiffening behavior of fiber reinforced polymer–strengthened reinforced concrete elements. The total response of strengthened elements is co... Read More

Round Robin Test on tensile and bond behaviour of Steel Reinforced Grout systems (2017)
Journal Article
De Santis, S., Ceroni, F., de Felice, G., Fagone, M., Ghiassi, B., Kwiecień, A., …Viskovic, A. (2017). Round Robin Test on tensile and bond behaviour of Steel Reinforced Grout systems. Composites Part B: Engineering, 127, 100-120. doi:10.1016/j.compositesb.2017.03.052

Mortar-based reinforcements are an innovative solution for retrofitting existing structures that combine effectiveness, compatibility, and sustainability. Despite the recent spreading of field applications, there is still insufficient knowledge on th... Read More

A comparative study on deflection-hardening behavior of ductile alkali-activated composite (2017)
Book Chapter
Zhang, S., Nedeljković, M., Ghiassi, B., & Ye, G. (2018). A comparative study on deflection-hardening behavior of ductile alkali-activated composite. In V. Mechtcherine, V. Slowik, & P. Kabele (Eds.), Strain-hardening cement-based composites, 123-130. Springer Netherlands. doi:10.1007/978-94-024-1194-2_14

Alkali-activation technology as an environmental friendly approach to produce construction materials can lead to a great CO2 emission reduction and provide high potential for waste reutilization. Alkali activated materials (AAMs) generally exhibit be... Read More

Modelling of the in-plane and out-of-plane performance of TRM-strengthened masonry walls (2017)
Journal Article
Mininno, G., Ghiassi, B., & Oliveira, D. V. (2017). Modelling of the in-plane and out-of-plane performance of TRM-strengthened masonry walls. Key Engineering Materials, 747, 60-68. doi:10.4028/www.scientific.net/kem.747.60

Tensile Reinforced Mortars (TRMs) are promising composites that address the compatibility demands required for strengthening of masonry and historical constructions. Although many recent studies have been devoted to the use of these materials for str... Read More

Effect of synergistic environmental conditions on thermal properties of a cold curing epoxy resin (2017)
Journal Article
Maljaee, H., Ghiassi, B., & Lourenço, P. B. (2017). Effect of synergistic environmental conditions on thermal properties of a cold curing epoxy resin. Composites Part B: Engineering, 113, 152-163. doi:10.1016/j.compositesb.2017.01.027

This study presents an investigation addressing the effect of environmental conditions on the thermal properties of a cold curing epoxy resin used in repair and strengthening of masonry structures. The exposure conditions consist of laboratory indoor... Read More

Modelling the nonlinear behaviour of masonry walls strengthened with textile reinforced mortars (2016)
Journal Article
Wang, X., Ghiassi, B., Oliveira, D. V., & Lam, C. (2017). Modelling the nonlinear behaviour of masonry walls strengthened with textile reinforced mortars. Engineering Structures, 134, 11-24. doi:10.1016/j.engstruct.2016.12.029

Textile Reinforced Mortars (TRMs) have found extensive attention for externally bonded reinforcement of masonry and historical structures. However, only few information is available regarding their mechanical properties and effectiveness in improving... Read More

Multi-level characterization of steel reinforced mortars for strengthening of masonry structures (2016)
Journal Article
Ghiassi, B., Oliveira, D. V., Marques, V., Soares, E., & Maljaee, H. (2016). Multi-level characterization of steel reinforced mortars for strengthening of masonry structures. Materials and Design, 110, 903-913. doi:10.1016/j.matdes.2016.08.034

Textile Reinforced Mortars (TRMs) have received extensive attention for externally bonded reinforcement of historical and masonry structures. Despite this recent attention, the available information on the test methods and mechanical performance of T... Read More

FRP–brick masonry bond degradation under hygrothermal conditions (2016)
Journal Article
Maljaee, H., Ghiassi, B., Lourenço, P. B., & Oliveira, D. V. (2016). FRP–brick masonry bond degradation under hygrothermal conditions. Composite Structures, 147, 143-154. doi:10.1016/j.compstruct.2016.03.037

Externally bonded reinforcement (EBR) of masonry structures with Fiber Reinforced Polymers (FRPs) has received extensive attention during the last years. Despite the vast literature on mechanics and short-term performance, the durability and long-ter... Read More

Tensile and Bond Characterization of Natural Fibers Embeeded in Inorganic Matrices (2016)
Book Chapter
Ghiassi, B., Razavizadeh, A., Oliveira, D. V., Marques, V., & Lourenço, P. B. (2016). Tensile and Bond Characterization of Natural Fibers Embeeded in Inorganic Matrices. In Natural Fibres: Advances in Science and Technology Towards Industrial Applications, 305-314. Springer Netherlands. doi:10.1007/978-94-017-7515-1_23

Innovative composite materials made of continuous fibers embedded in mortar matrices have been recently received attention for externally bonded reinforcement of masonry structures. In this regards, application of natural fibers for strengthening of... Read More

Repair of composite-to-masonry bond using flexible matrix (2015)
Journal Article
Kwiecień, A., de Felice, G., Oliveira, D. V., Zając, B., Bellini, A., De Santis, S., …Prota, A. (2016). Repair of composite-to-masonry bond using flexible matrix. Materials and Structures, 49(7), 2563-2580. doi:10.1617/s11527-015-0668-5

The paper presents an experimental investigation on an innovative repair method, in which composite reinforcements, after debonding, are re-bonded to the substrate using a highly deformable polymer. In order to assess the effectiveness of this soluti... Read More