Correlation between the performance of solid masonry prisms and wallettes under compression

Thamboo, Julian; Dhanasekar, Manicka

doi:10.1016/j.jobe.2019.01.007

Cited by 81 publications

(53 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Twelve masonry wallettes were constructed and tested under cyclic compression to develop experimental data. Only the brief details on the used constitutive materials, construction procedure of the wallettes and the cyclic testing protocol are given in this paper; further information can be referred in Thamboo and Dhanasekar [ 39 , 40 , 41 ].…”

Section: Experimental Programmementioning

confidence: 99%

Experimental and Analytical Study of Masonry Subjected to Uniaxial Cyclic Compression

et al. 2020

View full text Add to dashboard Cite

Structural evaluation of masonry against dynamic seismic actions invariably requires appropriate cyclic compression constitutive models. However, not many research studies have been dedicated to date to investigate the cyclic compression behaviour of masonry. Therefore, series of experimental investigation followed by analytical model verification were employed in this research to better understand the cyclic compression characteristics of masonry. Twelve masonry wallettes were experimentally tested under cyclic compression loading with different unit-to-mortar assemblies, which are commonly found in masonry structures. The experimental results indicated that the cyclic compression behaviour is greatly influenced by the masonry compressive strength and deformation properties. Thereafter, the ability of five literature analytical models to predict the masonry structural response under cyclic compression loading was investigated. The advantages and limitations of these models are presented and discussed, and the most appropriate analytical model to define the cyclic compression characteristics of masonry has been evaluated and reported. The suggested analytical model is shown to predict the cyclic compression characteristics of different masonry assemblies such as the envelop response, the stiffness degradation, the plastic strain history of the unloading and reloading stages.

show abstract

Section: Experimental Programmementioning

confidence: 99%

Experimental and Analytical Study of Masonry Subjected to Uniaxial Cyclic Compression

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Young's modulus and shear modulus need to be reduced considerably to get numerical results in agreement with the experimental results. The values of elastic material properties reported in the literature are usually obtained from uniaxial compression tests on the masonry prisms and it is reported in a recent study [41] that the elastic properties obtained from prism tests are about 34% higher than those obtained from wallette tests. Thus, the reported values need to be reduced accordingly in the numerical simulation.…”

Section: Validation Of Aem Modelling For Lateral Behavior Of Urm Wallsmentioning

confidence: 99%

Applied Element Modelling and Pushover Analysis of Unreinforced Masonry Buildings With Flexible Roof Diaphragm

Adhikari¹,

D’Ayala²

2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

View full text Add to dashboard Cite

Old and poorly constructed unreinforced masonry buildings are inherently vulnerable to earthquakes. Seismic analysis and assessment of these buildings with flexible diaphragms i.e. without box behavior is challenging as the available assessment methods for reinforced concrete framed or masonry structures with rigid diaphragms are not directly applicable to these buildings. In such structures, the walls loaded in out-of-plane direction and those loaded in in-plane direction behave in significantly different ways during earthquakes, making a conventional global analysis ambiguous and unreliable. In this study, using the applied element method for numerical modelling and analysis, a simple and reliable methodology for seismic performance assessment of unreinforced masonry buildings with flexible roof diaphragm is presented which includes the out-of-plane behavior in the global analysis. The applicability of the methodology for subsequent steps in fragility and vulnerability assessment of such buildings using non-linear static procedures is also clarified.

show abstract

“…However, there is no universally accepted testing method to measure the compressive strength of earth blocks. Due to the confinement produced by friction between the loading plate and the compression surface of the sample during testing, the aspect ratio, compression area, and the method used for the treatment of the compression surface all can significantly affect the measurement of compressive strength [9,10]. Samples with a small aspect ratio and large compression area are more vulnerable to the strong confinement imposed by the loading plate.…”

Section: Introductionmentioning

confidence: 99%

Methods to Test the Compressive Strength of Earth Blocks

Lan

Chao

Wang

et al. 2021

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

The efficient design of new earth structures and the restoration of old structures both require a reliable assessment of the compressive strength of earth materials. However, there is still much debate on the best method to accurately measure the compressive strength of earth blocks. To solve the problem of measuring the compressive strength of the earth block, the cube specimen, the half-block stacked specimen, and the full-size block specimen are used to measure the compressive strength of the molded adobe and rammed adobe, respectively, considering the influence of the specimen preparation process, loading direction, capping, and other factors. By comparing and analyzing the stress state, failure mode, and compressive strength of the specimen under various test methods, a compressive strength test method of earth blocks is determined, which is simple to operate, easy to standardize, and as close as possible to the actual strength of the blocks. The results show that the full-size block compression test method along the block thickness direction should be preferred to test the compressive strength of the earth block. The standard specimen obtained by cutting the full-size block is not suitable for the test of the compressive strength of the earth block; it can effectively solve the problem that the compressive strength of the small-thickness earth block cannot be directly measured by cutting the full-size block in half and stacking it, but it is not recommended to use the binder to bond the two half-blocks. When comparing the compressive strength of the earth blocks, the conversion coefficient related to the height-to-thickness ratio of the specimen cannot be used to convert the compressive strength. Still, the anisotropy of the material strength should be considered.

show abstract

Correlation between the performance of solid masonry prisms and wallettes under compression

Cited by 81 publications

References 30 publications

Experimental and Analytical Study of Masonry Subjected to Uniaxial Cyclic Compression

Experimental and Analytical Study of Masonry Subjected to Uniaxial Cyclic Compression

Applied Element Modelling and Pushover Analysis of Unreinforced Masonry Buildings With Flexible Roof Diaphragm

Methods to Test the Compressive Strength of Earth Blocks

Contact Info

Product

Resources

About