An experimental evaluation of prediction models for the mechanical behavior of unreinforced, lime-mortar masonry under compression

Costigan, Adrian; Pavía, Sara; Kinnane, Oliver

doi:10.1016/j.jobe.2015.10.001

Cited by 90 publications

(62 citation statements)

References 12 publications

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“…e results of the present study were obtained using only four types of stabilized earth blocks and six types of mortar; hence, a widening of the kinds of materials considered will be necessary for a better understanding of the compressive behavior of stabilized earth block masonry. Furthermore, [6] 0.49 0.48 2.41 Dayaratnam [7] 0.60 0.68 2.22 Bennett et al [8] 0.77 0.50 1.64 Dymiotis and Gutlederer [9] 0.89 0.49 1.44 Gumaste et al [10] 1.05 0.53 1.56 Kaushik et al [11] 0.77 0.45 1.67 Christy et al [12] 0.69 0.48 1.96 Lumantarna et al [13] 1.85 0.50 1.99 Sarhat and Sherwood [14] 1.86 0.45 1.77 Costigan et al [15] only a limited amount of published data is available for the compressive behavior of stabilized earth block masonry, unlike brick or cement block masonry. Compressive strength masonry not only influenced by block and mortar strength, but also other parameters such as the height-tothickness ratio of prisms, the volume fraction of bed joints to block volume.…”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, brick strength and mortar strength are readily available as data or can be obtained easily by performing laboratory tests. erefore, many researchers have developed an empirical expression relating the compressive strength of the brick/block unit, mortar, and masonry [4][5][6][7][8][9][10][11][12][13][14][15][16].…”

Section: Literature Reviewmentioning

confidence: 99%

“…A total of 248 average masonry compressive strength data points was used. Costigan et al [15] conducted the test on fired clay brick masonry bound with hydrated lime, natural hydraulic lime, and a cement-lime mortar. Kumavat [16] carried out the tests in order to evaluate the uniaxial compressive stress-strain curves of brick units, mortar cubes, and masonry prisms constructed with mortar grade 1 : 4.…”

Section: Literature Reviewmentioning

confidence: 99%

“…, (c) Brocker [4], (d) Mann [5], (e) Hendry and Malek [6], Dayaratnam [7], (g) Bennett et al [8], (h) Dymiotis and Gutlederer [9], (i) Gumaste et al [10], (j) Kaushik et al [11], (k) Christy et al [12], (l) Lumantarna et al [13], (m) Sarhat and Sherwood [14], (n) Costigan et al [15], and (o) Kumavat [16].…”

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confidence: 99%

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Prediction of Compressive Strength of Stabilized Earth Block Masonry

Sajanthan

Balagasan

Sathiparan

2019

Advances in Civil Engineering

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e present study investigates the compressive strength of cement-stabilized earth block masonry prisms with a number of masonry units and joint layer mortar combinations. e compressive strength of masonry was determined to be performed by uniaxial tests on 144 masonry prisms. e simple relationship has been identified for obtaining the compressive strength of stabilized earth block masonry from their corresponding block and mortar compressive strength. e predicted compressive strength of masonry prisms using the proposed expression is compared with 14 empirical equations and experimental data of past research available in the published literature. e compressive strength predicted by the expression proposed in the present study was found to be in good agreement with corresponding experimental data compared with other empirical equations available in the published literature.

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Section: Resultsmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

mentioning

confidence: 99%

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Prediction of Compressive Strength of Stabilized Earth Block Masonry

Sajanthan

Balagasan

Sathiparan

2019

Advances in Civil Engineering

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“…Several stress-strain relationships to model the masonry are available in the scientific literature [20,21]. Experimental tests have shown the stress-strain relationship of masonry to be non-linear in compression and tension already under low load levels.…”

Section: Mechanical Model Of Masonrymentioning

confidence: 99%

Ductility Capacity Assessment of Masonry Members Strengthened With Composites

Ramaglia¹,

Fabbrocino²,

Lignola³

et al. 2019

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

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Models able to assess the effects of composite strengthening on masonry structures are worthy of further developments. This is also evident in modern design codes and guidelines where, for the masonry, there is lack of well-established approaches. In fact, most of the strengthening applications on masonry structures are designed based on suggestions by the manufacturers, missing strict and clear calculations. Such an approach leads, very often, to the execution of large and therefore economically demanding strengthening systems, also not encouraging their diffusion. Furthermore, the use of excessive strengthening often involves an excessive, and above all involuntary, reduction of ductility capacity. It needs also further investigation the impact of peculiar behaviors of composites (e.g. up to trilinear stress strain behavior for FRCM) on the flexural response of masonry. In this paper the behavior of strengthened masonry members is analyzed accounting for the variability of mechanical characteristics of both masonry and the strengthening systems. The behavior of the members is analyzed in terms of the moment-curvature relationships. This approach allows to evaluate both the flexural capacity and the ductility capacity of the strengthened masonry sections. In fact, the ductility is a key aspect in the retrofit of masonry structures. Finally, the process of adimensionalization, allows to extend the results to any case, providing a useful tool not only for verification but also for the design of interventions.

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Performance of clay masonry prisms with light weight plaster exposed to standard fire exposure

et al. 2022

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Clay bricks are one of the most widely used materials in building construction due to their advantages, including local availability, ease of fabrication and cost‐effectiveness. Fire is one of the dangerous hazards that can cause damage the life and property. Lightweight plasters play a vital role in insulating the masonry construction during fire accident. There is only limited data and information available on the fire performance of Clay Brick Masonry (CBM) insulated with lightweight plaster. An extensive investigation was undertaken to evaluate the residual strength properties and physical characteristics of CBM prisms exposed to elevated temperatures. CBM prisms plastered with M‐sand mortar, vermiculite mortar, and perlite mortar were used for the investigation. Protected prisms were exposed to elevated temperatures following the ISO 834 standard fire curve for durations of 30 min (821°C), 60 min (925°C), 90 min (986°C), and 120 min (1029°C). Mechanical properties such as axial load carrying capacity, stress–strain behaviour, elastic modulus, and crack pattern were examined. The mechanical properties of CBM prisms were found to be highly influenced by the type of plastering, intensity, and the duration of heating. The microstructure and image analysis confirmed the effects of temperature exposure on protective plasters. Equations are proposed to determine the residual axial compressive strength and the elastic modulus of CBM. It was found that the specimens plastered with perlite mortar had better fire resistance.

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An experimental evaluation of prediction models for the mechanical behavior of unreinforced, lime-mortar masonry under compression

Cited by 90 publications

References 12 publications

Prediction of Compressive Strength of Stabilized Earth Block Masonry

Prediction of Compressive Strength of Stabilized Earth Block Masonry

Ductility Capacity Assessment of Masonry Members Strengthened With Composites

Performance of clay masonry prisms with light weight plaster exposed to standard fire exposure

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