Characterisation of mechanical behaviour of masonry composed of fired bricks and earthen mortar

Endo, Yohei; Yamaguchi, Kentaro; Hanazato, Toshikazu; Mishra, Chhabi

doi:10.1016/j.engfailanal.2019.104280

Cited by 16 publications

(5 citation statements)

References 17 publications

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“…Prism compression test. The size of the prism compression specimens are 240 × 365 × 800 mm, and it was loaded with axial loads after curing for 28 days under standard conditions (Endo et al, 2020;Thamboo et al, 2020). To better observe the crack growth state of prism under loads, a hierarchical loading protocol was adopted.…”

Section: Mechanical Property Test Of Prismmentioning

confidence: 99%

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Seismic performance of new adobe bricks masonry: Design and experiment

Zhou

Xin

et al. 2021

Advances in Structural Engineering

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At present, adobe houses with traditional characteristics are still widely used in rural areas in western China, but their seismic performance is relatively poor, and they often suffer serious damage under earthquake. To improve the seismic performance of traditional adobe buildings while retaining the characteristics of residential buildings, the mechanical properties of compressed earth blocks (CEB) were tested in this study, and the microstructure characteristics of CEB after failure were analyzed by electron microscope. On this basis, six adobe wall specimens were designed and tested by quasi-static loading to investigate the influence of core columns and different types of bricks on its seismic performance. The results show that the core column can improve the bearing capacity and shear capacity of hollow CEB, and it can also significantly increase the bearing capacity, energy dissipation capacity, and ductility of CEB wall. In general, the adobe wall with core columns shows excellent seismic performance, which can provide a new choice for improving the seismic performance of the adobe house.

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Section: Mechanical Property Test Of Prismmentioning

confidence: 99%

“…The specific test plan was presented in Table 3. Through calculation, the compressive stress on the upper part of the first-story house wall was 0.29MPa, so 0.29MPa was selected as the vertical compressive stress for this test (Endo et al, 2020).…”

Section: Test Specimensmentioning

confidence: 99%

Seismic performance of new adobe bricks masonry: Design and experiment

Zhou

Xin

et al. 2021

Advances in Structural Engineering

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“…The parameters of the timber were determined, considering the Nepalese building code (NBC) [20] and characterisation tests discussed in Section 3.2. The parameters of the brick masonry were chosen in accordance with the previously conducted masonry material characterisation tests [21] and NBC [15]. Empirical equations were also taken into account [22,23].…”

Section: Materials Modelsmentioning

confidence: 99%

Adaptative Pushover Analyses of a Heritage Structure: Application to a Multi-Tiered Pagoda Temple

Endo¹,

Kondo²,

Iwanami³

2021

12th International Conference on Structural Analysis of Historical Constructions

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The present paper discusses seismic behaviour of multi-tier pagoda temple. The seismic behaviour was examined by different pushover analysis techniques including adaptive pushover analysis. The case study objective is a five-tier pagoda. The studied pagoda is built of timber frameworks and masonry walls. Masonry is composed of burnt solid bricks and earthen mortar. The pushover analyses are conducted, taking into account frictional behaviour between timber and masonry. The research challenges two tasks. A first task deals with experiments on interface behaviour between timber and masonry in earthen mortar. The study of the discussed interface behaviour is not straightforward since few tests have been conducted on similar subjects. In the present study, direct shear tests are performed. A second task coves pushover analyses of the five-tier pagoda by means of FE analysis. The paper provides useful experimental data of interface behaviour between timber and masonry in earthen mortar and also suggests efficient strategies of seismic assessment of pagoda-type structures.

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“…Costigan et al [7] and Parajuli and Kiyono [8] experimentally characterized the mechanical properties of masonry walls. Endo et al [9] conducted an experiment on a brick masonry wall composed of fired bricks and mud mortar. Parajuli et al [10] studied the behavior of the monumental brick masonry wallet through in-situ tests.…”

Section: Introductionmentioning

confidence: 99%

Seismic Fragility Analysis of Existing Old Newari Brick Masonry Building in Pokhara Valley

Chapagain,

Chaulagain

2024

Struct. Mech. of Eng. Const. and Build

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Most of the building stock in Nepal is based on masonry construction, which includes monumental, administrative, and residential structures. These structures are vulnerable during earthquakes, as evidenced by the massive structural damage, loss of human life, and property damage due to a lack of proper assessment and appropriate strengthening measures. An analysis of the seismic vulnerability of existing old Newari brick masonry buildings in the Pokhara Valley is presented. These buildings were built using indigenous knowledge and technology. The investigation is based on analytical studies, with some material properties obtained from field tests. Proper modeling of a masonry structure is crucial for reliable seismic resistance and structural design. However, modeling a real masonry structure is a challenging and computationally demanding task due to its complicated framework, requiring in-depth knowledge, realistic material properties, and relevant information. The aim of this research is to assess the seismic performance of old Newari masonry buildings using stress level and fragility curves. The research issues are addressed analytically through linear time history analysis using the finite element program-based software Sap 2000 v20. In dynamic analysis, numerical building models were subjected to three synthetic earthquakes. The performance status of the building based on various stress levels is evaluated, and weak regions are identified. The fragility curve of the structure is assessed, considering the ground motion parameters in the locality. The fragility function is plotted with the probability of failure at an interval of 0.10 g. The results of the analysis highlight that the studied structure is vulnerable compared to the codal provisions and standard recommendations.

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Characterisation of mechanical behaviour of masonry composed of fired bricks and earthen mortar

Cited by 16 publications

References 17 publications

Seismic performance of new adobe bricks masonry: Design and experiment

Seismic performance of new adobe bricks masonry: Design and experiment

Adaptative Pushover Analyses of a Heritage Structure: Application to a Multi-Tiered Pagoda Temple

Seismic Fragility Analysis of Existing Old Newari Brick Masonry Building in Pokhara Valley

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