Structural behavior of out-of-plane loaded precast lightweight EPS-foam concrete C-shaped slabs

Saheed, Sanusi; Amran, Yusuf; El-Zeadani, Mohamed; Aziz, Farah Nora Aznieta Abdul; Федюк, Роман; Alyousef, Rayed; Alabduljabbar, Hisham

doi:10.1016/j.jobe.2020.101597

Cited by 18 publications

(24 citation statements)

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“…Therefore, applying CFRP bar with different surface treatments as flexural reinforcement could have resulted in various bond strengths. Concerning this, extensive investigation on the local bond-slip relationship in CFRP RC beam may become significant to avoid premature slip or de-bond failure of CFRP bars from concrete [ 42 ]. Henceforth, perfect bond strength between CFRP bar and concrete is assumed by international guidelines and researchers [ 5 , 6 , 18 , 19 , 25 , 32 , 40 ].…”

Section: Hotspot Research Topics For Future Investigationsmentioning

confidence: 99%

“… ( a ) Flexural test set up with a single point load (Reprinted with permission from ref. [ 42 ], 2022, Elsevier) [ 42 ] and ( b ) Flexural test set up with a pair of point load (Reprinted with permission from ref. [ 22 ], 2022, Elsevier): Flexural tests set up.…”

Section: Figurementioning

confidence: 99%

“… Normalized cracking moment against normalized reinforcement ratio [ 17 , 22 , 32 , 36 , 38 , 39 , 40 , 42 , 44 , 45 , 46 , 47 , 48 ]. …”

Section: Figurementioning

confidence: 99%

“… Effects of normalized reinforcement ratio on the normalized ultimate moment [ 8 , 17 , 22 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 ]. …”

Section: Figurementioning

confidence: 99%

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Flexural Strength of Concrete Beam Reinforced with CFRP Bars: A Review

et al. 2022

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Conventional reinforced concrete (RC) structures are commonly associated with the corrosion of steel reinforcement. The application of carbon fiber reinforced polymer (CFRP) bars as flexural reinforcement has become a new promising option. This paper presents a state-of-the art flexural strength on concrete beams reinforced with CFRP bars. Concrete compressive and CFRP bar tensile strain, reinforcement ratio, types of surface treatment on CFRP bar and concrete compressive strength were identified as aspects of behavior. Significant findings in the literature had manifested all aspects of behavior that were affecting the flexural strength, deflections and crack characteristics of CFRP RC beams. In addition, the experimental result on 98 specimens of CFRP RC beams from the literature show that ACI 440.1R-15 and CSA S806-12 standards underestimate the ultimate flexural moment capacity of CFRP RC beams. On the other hand, Kara and Ashour predictions are more accurate with the experimental values. Moreover, hotspot research topics were also highlighted for further considerations in future studies.

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Section: Hotspot Research Topics For Future Investigationsmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

“… Normalized cracking moment against normalized reinforcement ratio [ 17 , 22 , 32 , 36 , 38 , 39 , 40 , 42 , 44 , 45 , 46 , 47 , 48 ]. …”

Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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Flexural Strength of Concrete Beam Reinforced with CFRP Bars: A Review

et al. 2022

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“…The structural performance of lightweight EPS-foam (LEPSF) concrete was studied for its application in slab systems [16]. The analyzed LEPSF concrete had a 35 MPa at a 1980 kg/m 3 density, and it revealed excellent structural behavior.…”

Section: Lightweight Construction Materialsmentioning

confidence: 99%

Design and Application of Cellular Concrete on a Mexican Residential Building and Its Influence on Energy Savings in Hot Climates: Projections to 2050

et al. 2020

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The thermal performance of economical housing located in hot climates remains a pending subject, especially in emerging economies. A cellular concrete mixture was designed, considering its thermophysical properties, to apply the new material into building envelopes. The proposed materials have low density and thermal conductivity to be used as a nonstructural lightweight construction element. From the design stage, a series of wall systems based on cellular concrete was proposed. Whereas in the second phase, the materials were analyzed to obtain the potential energy savings using dynamic simulations. It is foreseen that the energy consumption in buildings located in these climates will continue to increase critically due to the temperature increase associated with climate change. The temperatures predicted mean vote (PMV), electric energy consumption, and CO2 emissions were calculated for three IPCC scenarios. These results will help to identify the impact of climate change on the energy use of the houses built under these weather conditions. The results show that if the conventional concrete blocks continue to be used, the air conditioning energy requirements will increase to 49% for 2030 and 61% by 2050. The proposed cellular concrete could reduce energy consumption between 15% and 28%, and these saving rates would remain in the future. The results indicate that it is necessary to drive the adoption of lightweight materials, so the impact of energy use on climate change can be reduced.

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Experimental investigation on flexural and direct shear behaviors of specimens made of lightweight carbon textile‐reinforced cementitious composites

Dinh

Pham

Kim

et al. 2023

Structural Concrete

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Textile‐reinforced cementitious composites (TRCCs) have recently received significant attention in structural engineering as promising retrofitting materials as well as reinforcements for thin and slender structural components. For applicability in the precast industry, the weight of the structural components made of TRCCs is a major concern. In this study, lightweight (LW) TRCC materials were developed and their flexural and direct shear performances were investigated. Carbon fabric is used as the textile reinforcement of the LW TRCCs, and expanded glass aggregates made from industrial refractory materials with fine particle sizes of 0.25–0.5 mm incorporating the mineral admixture (silica fume) are used to develop the LW cement‐based matrix. The main test series in this study include the expanded glass‐to‐binder (EG/B) ratio, surface coating methods used for textile fabrics, and volume dosages of short polyvinyl alcohol (PVA) fibers used to modify the cement‐based matrix. Three main series, including a total of 30 flexural test specimens and 30 shear test specimens, are fabricated and tested. The flexural behavior of LW TRCCs is investigated via four‐point bending tests and the direct shear behavior of LW TRCCs is investigated based on the FIP standard using one shear failure plane. The experimental results indicate that the EG/B ratio significantly affects the overall flexural and shear performances of LW TRCCs, wherein the use of higher EG/B ratios might lead to greater reduction in flexural properties as well as shear properties in the pre‐peak stage. The coating methods employed for fabric surface treatment via epoxy impregnation combined with rough layers are effective in enhancing flexural properties in terms of load and deformation capacity and shear properties in terms of peak stress compared with the counterpart using only the epoxy coating method. Additionally, incorporating short discrete PVA fibers within the LW cement‐based matrix results in outstanding performance due to improvement in bonding quality at the textile/matrix interface, which can be applied as a potential solution for fabricating LW, high‐performance TRCCs.

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Structural behavior of out-of-plane loaded precast lightweight EPS-foam concrete C-shaped slabs

Cited by 18 publications

References 50 publications

Flexural Strength of Concrete Beam Reinforced with CFRP Bars: A Review

Flexural Strength of Concrete Beam Reinforced with CFRP Bars: A Review

Design and Application of Cellular Concrete on a Mexican Residential Building and Its Influence on Energy Savings in Hot Climates: Projections to 2050

Experimental investigation on flexural and direct shear behaviors of specimens made of lightweight carbon textile‐reinforced cementitious composites

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