Anti-Spalling Concrete

Han, Baoguo; Zhang, Liqing; Ou, Jinping

doi:10.1007/978-981-10-4349-9_10

Cited by 3 publications

(2 citation statements)

References 59 publications

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“…[ 27 , 28 , 29 , 30 ] In the past several years’ significant research has been conducted on smart multifunctional concrete structures built for very specific and dedicated purposes. [ 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 ] This has motivated the authors to explore cement‐TPMS‐based piezocomposites, specifically keeping in mind the self‐sensing and energy‐harvesting applications of concrete structures. [ 35 , 49 , 50 , 51 , 52 ] The present study can be significant considering the use of cement‐TPMS‐based piezocomposites with enhanced properties in the context of structural health monitoring of critical structures like dams, nuclear reactors, high‐rise buildings, bridges, etc.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of the Effective Properties of 0–3 and Gyroid Triply Periodic Minimal Surface Cement‐Piezocomposites

et al. 2022

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In the present numerical simulation work, effective elastic and piezoelectric properties are calculated and a comparative study is conducted on a cement matrix‐based piezocomposite with 0–3 and gyroid triply periodic minimal surface (TPMS) inclusions. The present study compares the effective properties of different piezoelectric materials having two different types of connectivity of the inclusions namely, 0–3 inclusions where the inclusions are physically separated from each other and are embedded within the matrix and the second one is TPMS inclusions having interpenetrating phase type connectivity. Effective properties are calculated for four different materials at five different volume fractions namely, 10%, 15%, 20%, 25%, and 30% volume fractions of inclusion by volume. In terms of effective properties and direct piezoelectric effect, TPMS piezocomposite is found to perform better compared to 0–3 piezocomposite. Lead‐free piezoelectric material 0.5Ba(Ca0.8Zr0.2)O3 − 0.5(Ba0.7Ca0.3)TiO3 demonstrates better performance compared to all other material inclusions studied. The present study attempts to highlight improved piezoelectric effective properties of lead‐free material‐based piezocomposites with TPMS inclusions.

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Section: Introductionmentioning

confidence: 99%

Comparative Study of the Effective Properties of 0–3 and Gyroid Triply Periodic Minimal Surface Cement‐Piezocomposites

et al. 2022

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“…However, despite the growing applications of SCC, HSC, and high-strength SCC, their fire performance and long-term durability as exposed to elevated temperatures still need further research. Spalling and loss of mechanical properties are the major problems associated with high-temperature conditions [ 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Fire Performance of Heavyweight Self-Compacting Concrete and Heavyweight High Strength Concrete

Aslani

Hamidi

2019

Materials

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In this study, the fresh and hardened state properties of heavyweight self-compacting concrete (HWSCC) and heavyweight high strength concrete (HWHSC) containing heavyweight magnetite aggregate with 50, 75, and 100% replacement ratio, and their performance at elevated temperatures were explored experimentally. For fresh-state properties, the flowability and passing ability of HWSCCs were assessed by using slump flow, T500 mm, and J-ring tests. Hardened-state properties including hardened density, compressive strength, and modulus of elasticity were evaluated after 28 days of mixing. High-temperature tests were also performed to study the mass loss, spalling of HWSCC and HWHSC, and residual mechanical properties at 100, 300, 600 and 900 °C with a heating rate of 5 °C/min. Ultimately, by using the experimental data, rational numerical models were established to predict the compressive strength and modulus of elasticity of HWSCC at elevated temperatures. The results of the flowability and passing ability revealed that the addition of magnetite aggregate would not deteriorate the workability of HWSCCs and they retained their self-compacting characteristics. Based on the hardened densities, only self-compacting concrete (SCC) with 100% magnetite content, and high strength concrete (HSC) with 75 and 100% magnetite aggregate can be considered as HWC. For both the compressive strength and elastic modulus, decreasing trends were observed by introducing magnetite aggregate to SCC and HSC at an ambient temperature. Mass loss and spalling evaluations showed severe crack propagation for SCC without magnetite aggregate while SCCs containing magnetite aggregate preserved up to 900 °C. Nevertheless, the mass loss of SCCs containing 75 and 100% magnetite content were higher than that of SCC without magnetite. Due to the pressure build-up, HSCs with and without magnetite showed explosive spalling at high temperatures. The residual mechanical properties analysis indicated that the highest retention of the compressive strength and modulus of elasticity after exposure to elevated temperatures belonged to HWSCC with 100% magnetite content.

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