Fiber-Reinforced Polymer Nets for Strengthening Lava Stone Masonries in Historical Buildings

Cascone, Santi Maria; Sapienza, Vincenzo; Lionti, Irene; Porto, Simona M.C.

doi:10.3390/su8040394

Cited by 6 publications

(3 citation statements)

References 6 publications

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“…Glass fibers are still not common in structural members, but their presence in facing and cladding panels and permanent formworks and shotcrete is relevant [ 62 ]. They provide a good response under fire, a relevant requirement for construction.…”

Section: Fibersmentioning

confidence: 99%

Admixtures in Cement-Matrix Composites for Mechanical Reinforcement, Sustainability, and Smart Features

et al. 2016

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For more than a century, several inclusions have been mixed with Portland cement—nowadays the most-consumed construction material worldwide—to improve both the strength and durability required for construction. The present paper describes the different families of inclusions that can be combined with cement matrix and reviews the achievements reported to date regarding mechanical performance, as well as two other innovative functionalities of growing importance: reducing the high carbon footprint of Portland cement, and obtaining new smart features. Nanomaterials stand out in the production of such advanced features, allowing the construction of smart or multi-functional structures by means of thermal- and strain-sensing, and photocatalytic properties. The first self-cleaning concretes (photocatalytic) have reached the markets. In this sense, it is expected that smart concretes will be commercialized to address specialized needs in construction and architecture. Conversely, other inclusions that enhance strength or reduce the environmental impact remain in the research stage, in spite of the promising results reported in these issues. Despite the fact that such functionalities are especially profitable in the case of massive cement consumption, the shift from the deeply established Portland cement to green cements still has to overcome economic, institutional, and technical barriers.

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Section: Fibersmentioning

confidence: 99%

Admixtures in Cement-Matrix Composites for Mechanical Reinforcement, Sustainability, and Smart Features

et al. 2016

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“…To avoid deterioration of the mechanical properties of the steel bars due to corrosion, fiber reinforced polymer (FRP) bars were developed as an ideal reinforcement in concrete structures [12,13]. The partial or complete adoption of FRP composites as structural members can significantly enhance structural safety and sustainability [14][15][16]. However, the applicability of FRP bars has been restricted by the amount of inferior factors such as significant discreteness [17], insufficient shear capacity, low elastic modulus (for glass-fiber reinforced polymer (GFRP) bars and basalt-fiber reinforced polymer (BFRP) bars [18,19]), relatively lower compressive strength compared to tensile strength [20], and last but not least, poor ductility, which would potentially lead to a dangerous brittle failure mode in the FRP reinforced concrete structures.…”

Section: Introductionmentioning

confidence: 99%

Compressive Behavior of Sustainable Steel-FRP Composite Bars with Different Slenderness Ratios

Tang

Sun

2019

Sustainability

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This paper presents experimental studies on the compressive behavior of a sustainable steel-fiber reinforced composite bar (SFCB) under uniaxial compressive loading. The SFCB, combined with steel and fiber reinforced polymer (FRP), is expected to significantly enhance structural safety and sustainability. A new test method with LVDT and extensometer sensors was developed and verified through experiments to test the tensile and compressive behavior of the SFCB. Fifty-four specimens including SFCB and inner steel bar (ISB) with different slenderness ratios were tested. The test results indicated that the initial compressive elastic modulus of the SFCB was essentially the same as its initial tensile elastic modulus. The compressive yield load of the SFCB was essentially irrelevant to the slenderness ratio, and the ultimate compressive stress of the SFCBs varied inversely with the slenderness ratios. The squash load of the SFCB tended to be conservative for predicting the compressive yield load of the SFCB, while the equivalent critical global buckling load of the SFCB was much higher than its corresponding compressive yield load and ultimate load due to the inelastic buckling mechanism of the SFCB within the range of the equivalent slenderness ratios studied in this paper.

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“…As all architectural heritages are standing on ground, the seismic risk assessments for architectural heritage can be initiated from geological and geotechnical approaches to understand the composition and the material property distribution of the beneath and surrounding ground, local site effect, and seismic zonation [3][4][5][6]. For the structural and architectural engineering perspective, the seismic behaviour of historic monument and architectural heritage composed of stone block or masonry structure have been evaluated analytically, numerically [7][8][9][10][11] and experimentally [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Seismic Performance of Ancient Masonry Structures in Korea Rediscovered in 2016 M 5.8 Gyeongju Earthquake

Park

Kim

et al. 2019

Sustainability

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The Gyeongju Historic Areas, which include the millennium-old capital of the Silla Kingdom, are located in the region most frequently affected by seismic events in the Korean peninsula. Despite the numerous earthquakes documented, most of the stone architectural heritage has retained their original forms. This study systematically reviews and categorises studies dealing with the seismic risk assessment of the architectural heritage of the historic areas. It applies research methodologies, such as the evaluation of the engineering characteristics of subsoil in architectural heritage sites, site-specific analysis of the ground motions in response to earthquake scenarios, geographic information system (GIS)-based seismic microzonation according to the geotechnical engineering parameters, reliability assessment of dynamic centrifuge model testing for stone masonry structures and evaluation of seismic behaviour of architectural heritage. The M 5.8 earthquake that hit Gyeongju on 12 September 2016 is analysed from an engineering point of view and the resulting damage to the stone architectural heritage is reported. The study focuses on Cheomseongdae, an astronomical observatory in Gyeongju, whose structural engineering received considerable attention since its seismic resistance was reported after the last earthquake. Dynamic centrifuge model tests applying the Gyeongju Earthquake motions are performed to prove that it is not a coincidence that Cheomseongdae, a masonry structure composed of nearly 400 stone members, survived numerous seismic events for over 1300 years. The structural characteristics of Cheomseongdae, such as the well-compacted filler materials in its lower part, rough inside wall in contrast to the smooth exterior, intersecting stone beams and interlocking headstones are proven to contribute to its overall seismic performance, demonstrating outstanding seismic design technology.

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Fiber-Reinforced Polymer Nets for Strengthening Lava Stone Masonries in Historical Buildings

Cited by 6 publications

References 6 publications

Admixtures in Cement-Matrix Composites for Mechanical Reinforcement, Sustainability, and Smart Features

Admixtures in Cement-Matrix Composites for Mechanical Reinforcement, Sustainability, and Smart Features

Compressive Behavior of Sustainable Steel-FRP Composite Bars with Different Slenderness Ratios

Seismic Performance of Ancient Masonry Structures in Korea Rediscovered in 2016 M 5.8 Gyeongju Earthquake

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