An experimental study on cyclic behavior of aerated concrete block masonry walls retrofitted with different methods

Arslan, Mehmet Emin; Çelebi, Erkan

doi:10.1016/j.conbuildmat.2018.12.132

Cited by 18 publications

(16 citation statements)

References 24 publications

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“…The result showes satisfactory postpeak ductility because the energy is not abruptly lost but gradually releases throughout its deflection-softening behavior. To improve the strength and ductility of concrete in seismicloading, antiseismic fabric, especially double-sided reinforcement of expansive glass particle plastering is used by Arslan et al [14]. Erdem et al [15] studied the seismic performance of three different planar RC frames with flexible connections, including Uslot, T-slot, and female and male slots.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Finite Element Analysis of External ALC Panel Steel Frames with New Semi-Rigid Connector

et al. 2021

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In this paper, a new ALC panel connector was proposed. It has a good engineering economy and high fault tolerance. A quasistatic loading experiment was carried out to verify the feasibility of the external ALC panel steel frame under seismic loading. The test phenomena, hysteretic curve, skeleton curve, stiffness degradation, and energy dissipation of two sets of full-scale specimens were analyzed and discussed. Moreover, the simulation of pendulous Z-panel connectors with different thicknesses was carried out using ABAQUS software. The comparison reveals that the semi-rigid connection has a full hysteresis curve, good energy dissipation capacity, and a 15% increase in peak load capacity. Finally, similar results for different thicknesses in the use of pendulous Z-panel connectors reveal that using the 6 mm connector may be the most economical solution for engineering.

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Section: Introductionmentioning

confidence: 99%

Experimental and Finite Element Analysis of External ALC Panel Steel Frames with New Semi-Rigid Connector

et al. 2021

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“…In this view, the mortar for the plastering of AAB walls should be characterized by high toughness. Cyclic shear tests were employed by researchers to prove that plastering mortar with high toughness can improve the stability of the AAB wall structure [31].…”

Section: Introductionmentioning

confidence: 99%

Investigation and Preparation of the Plastering Mortar for Autoclaved Aerated Blocks Walls

Feng

Shi

et al. 2021

Crystals

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The increase in the use of aerated concrete blocks (AAB) in construction walls has increased the demand for specialized plastering mortar, which should have the characteristics of high water retention, low water absorption, low thermal conductivity and high toughness. This study scrutinized the potential of expanded and vitrified small ball (EVSB) and expanded perlite as lightweight aggregates, and the beneficial effect of a modifying additive based on a mixture of ethylene-vinyl acetate (EVA), hydroxypropyl methylcellulose (HPMC) and fibers has been proved. The dry density, consistency, water absorption, mechanical strength, pore characteristics and micro morphology of the plaster mortar were evaluated. It is manifested by enhanced toughness, reduced dry density, and optimized pore structure characteristics. The relationship between mass water absorption and freeze-thaw cycle resistance is established, which shows that when the mass water absorption is 20%, the mortar exhibits better freeze resistance. After 25 freeze-thaw cycle tests, the mass loss was 0.26% and the strength loss was 1.41%. Through the comparison of test results, a new composition of plastering mortar is provided: cement: fly ash: water: heavy calcium carbonate: quartz sand: EVSB: EVA: HPMC (100,000 mPa·s): fiber = 70: 30: 76: 12: 250: 24: 2: 0.3: 0.2.

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“…Numerous experimental (Konthesingha et al, 2013;Wang et al, 2016;Knox et al, 2018;Arslan and Celebi, 2019) and analytical (Chaimoon and Attard, 2007;Dhanasekar and Haider, 2008;Senthivel and Lourenço, 2009;Dolatshahi and Aref, 2011;Abdulla et al, 2017) researches have been performed to evaluate the seismic behavior of masonry walls. Masonry walls are the only resisting elements against earthquakes in unreinforced masonry buildings exposed to unpredicted lateral loads.…”

Section: -Introductionmentioning

confidence: 99%

In-plane retrofitting of masonry structures by using GFRP strips in the Bedjoints

Osmanzadeh¹,

Ahani²,

Rafezy³

et al. 2021

Preprint

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Many unreinforced masonry structures were vulnerable in the past earthquakes and required retrofitting. However, the vulnerability of masonry structures could solve by providing numerous retrofitting approaches, scarcity of appropriate methods that may provide a solution for the historical masonry structures with lesser effects on their façade is vehemently sensible. In this study, two one-third scale masonry wall specimens made by clay bricks were tested under constant vertical and cyclic lateral loading. The specimens consist of an unreinforced wall and a wall retrofitted by GFRP strips. This study investigates the seismic behavior of unreinforced masonry walls before and after using GFRP strips on their bedjoints. To this purpose, various patterns of using GFRP strips have been studied by simplified micro-modeling. The consequence indicates that the proposed retrofitting technique could improve the lateral strength and stiffness of the unreinforced masonry wall along with a considerable increase in the energy dissipation and ductility content, which leads to making a change in the behavior of the wall from brittle to ductile failure. The proposed method could apply to the modern historical structures in which cement mortar has been used as an adhesive between the masonry layers.

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An experimental study on cyclic behavior of aerated concrete block masonry walls retrofitted with different methods

Cited by 18 publications

References 24 publications

Experimental and Finite Element Analysis of External ALC Panel Steel Frames with New Semi-Rigid Connector

Experimental and Finite Element Analysis of External ALC Panel Steel Frames with New Semi-Rigid Connector

Investigation and Preparation of the Plastering Mortar for Autoclaved Aerated Blocks Walls

In-plane retrofitting of masonry structures by using GFRP strips in the Bedjoints

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