Thermo-mechanical properties and stress-strain curves of ordinary cementitious mortars at elevated temperatures

Bamonte, Patrick; Gambarova, Pietro G.; Sciarretta, Francesca

doi:10.1016/j.conbuildmat.2020.121027

Cited by 15 publications

(2 citation statements)

References 32 publications

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“…Cree, Green, and Noumowé (2013) carried out quasi-static strength tests on thermally damaged cement mortar and concrete, and established typical strength loss model. Bamonte, Gambarova, and Sciarretta (2021) investigated the mechanical properties of mortars after heating to 200, 400 and 600°C and 900°C to evaluate the thermal diffusion coefficient. Jeyaprabha, Elangovan, and Prakash (2016) placed mortar mixtures at temperatures of 200°C, 500°C, 700°C, and 900°C, followed by cooling with water, and measured their compressive strength.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of thermally damaged mortar under coupled static-dynamic loading

Ying,

Chen,

Chen

et al. 2024

Front. Mater.

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In buildings that experience fires, cement mortar is subjected to high-temperature environments and not only the weight of the structure above but also blast loads, leading to structural damage and loss of load-bearing capacity. To investigate the static and dynamic mechanical properties of thermally damaged mortar, a series of tests utilizing modified split Hopkinson pressure bar were conducted. These tests included quasi-static, conventional dynamic and coupled static-dynamic loading tests on mortar specimens that were subjected to seven temperature levels: 20°C, 100°C, 200°C, 300°C, 400°C, 500°C, and 600°C. The test results revealed that both the thermal damage and loading method had an impact on the mechanical properties and damage characteristics of the mortar specimens. The compressive strength, elastic modulus and absorbed energy ratio of mortar decreased as temperature increased. Notably, the quasi-static strength loss rate was 60% when the temperature reached 600°C. Under coupled static-dynamic loading, the specimens exhibited higher strength, elastic modulus, reflected energy ratio, and transmitted energy ratio. Conversely, they had lower average strain rates and absorbed energy ratios. Intriguingly, the dynamic growth factor had a relative increase of 0.7–2.0 compared with other loading methods. Furthermore, the higher temperature, the higher fragmentation of the specimens in the fragmentation pattern. Conventional dynamic loading resulted in the greatest degree of fragmentation. The findings provide a scientific basis for the design and evaluation of concrete shockproof and explosion-resistant structures.

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Section: Introductionmentioning

confidence: 99%

Mechanical properties of thermally damaged mortar under coupled static-dynamic loading

Ying,

Chen,

Chen

et al. 2024

Front. Mater.

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“…Some studies on the effects of high temperatures on masonry structures have been developed over the last decades and reviewed by some authors [9][10][11]. Other works have focused on investigations of masonry components (e.g., units, mortar, and grout) exposed to elevated temperatures [12][13][14][15][16][17][18]. Despite this, scarce information is still available that provides quantitative data regarding the effects of fire on the structural performance of masonry elements.…”

Section: Introductionmentioning

confidence: 99%

Review of Recent Progress on the Effects of High Temperatures on the Mechanical Behavior of Masonry Prisms

et al. 2023

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The structural performance of civil engineering infrastructures exposed to elevated temperatures has been investigated in many recent works. Some of these studies evaluated the residual mechanical behavior of masonry prisms subjected to high temperatures, as these specimens are simplified models (2–5 units in height) that can be easily produced and tested, in terms of operational and economic factors. However, there is no previous literature review on the mechanical properties of fire-damaged masonry prisms. Therefore, this paper presents an investigation of the current state-of-the-art on this topic. It provides a careful review of recent knowledge on the failure mechanisms, residual compressive strength, modulus of elasticity, and stress–strain behavior of masonry prisms made with different types of units, mortars, and/or grout after exposure to different types of thermal treatments. Based on the revised information, future research directions on the scientific field of masonry infrastructures are reported.

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State-of-the-art of construction stones for masonry exposed to high temperatures

Sciarretta

Eslami

Beaucour

et al. 2021

Construction and Building Materials

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Thermo-mechanical properties and stress-strain curves of ordinary cementitious mortars at elevated temperatures

Cited by 15 publications

References 32 publications

Mechanical properties of thermally damaged mortar under coupled static-dynamic loading

Mechanical properties of thermally damaged mortar under coupled static-dynamic loading

Review of Recent Progress on the Effects of High Temperatures on the Mechanical Behavior of Masonry Prisms

State-of-the-art of construction stones for masonry exposed to high temperatures

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