Evolution of thermo-mechanical properties of concrete with calcium aluminate cement and special aggregates for energy storage

Roig-Flores, Marta; Lucio-Martin, T.; Alonso, M.; Guerreiro, Luis

doi:10.1016/j.cemconres.2020.106323

Cited by 36 publications

(24 citation statements)

References 61 publications

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“…Efforts to increase the thermal conductivity of concrete for high temperature TES (Table 1) have shown that the use of CAC can increase thermal conductivity up to 5 W/m•K [13], compared to a maximum of 2 W/m•K with the use of metal fibres [15]. Finally, the literature shows that thermal cycling can lead to a decrease in thermal conductivity, usually attributed to an increase in open porosity [10,14].…”

Section: Challengesmentioning

confidence: 99%

Key Challenges for High Temperature Thermal Energy Storage in Concrete—First Steps towards a Novel Storage Design

et al. 2022

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Thermal energy storage (TES) allows the existing mismatch between supply and demand in energy systems to be overcome. Considering temperatures above 150 °C, there are major potential benefits for applications, such as process heat and electricity production, where TES coupled with concentrating solar power (CSP) plants can increase the penetration of renewable energies. To this end, this paper performs a critical analysis of the literature on the current and most promising concrete energy storage technologies, identifying five challenges that must be overcome for the successful exploitation of this technology. With these five challenges in mind, this paper proposes an approach that uses a new modular design of concrete-based TES. A preliminary study of the feasibility of the proposed system was performed using computational fluid dynamics (CFD) techniques, showing promising results.

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Section: Challengesmentioning

confidence: 99%

Key Challenges for High Temperature Thermal Energy Storage in Concrete—First Steps towards a Novel Storage Design

et al. 2022

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“…However, over 600°C, both types of concrete exhibited similar strength loss. Roig‐Flores et al 37 investigated energy storage characteristics of concretes produced with special aggregates and CAC subjected to temperature cycles from 290 to 550°C. They presented that the use of CAC as with thermally stable aggregates can reduce the drawbacks of using concrete at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

Basalt fiber reinforced foam concrete with marble waste and calcium aluminate cement

Bayraktar

Yarar

Benli

et al. 2022

Structural Concrete

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As a typical cellular lightweight material, foam concrete is produced by mixing cement, water, aggregate and a suitable foaming agent and has a density usually below 1600 kg/m3. The large number of air spaces present in foam concrete ensures that the concrete has advantages such as lightweight, high fluidity during pouring, excellent thermal and sound insulation, superior fire resistance, and outstanding energy absorption capacity. Its high porosity and the connectivity of the pores, which can allow the entry of negative substances into the concrete environment, cause foam concrete to have a very low physico‐mechanical and durability performance. To eliminate or reduce these disadvantages, this study adopted the use of basalt fibers (BF) as eco‐friendly fiber type and calcium aluminate cement (CAC) as aluminous cement with waste marble powder (WMP) as aggregates in foam concrete. In that respect, 9 mixes with varying content of foaming agent (FC) and basalt fiber have been prepared. Assessment of mechanical performance was based on compressive and flexural strength after 6 h, 1, 7, and 28 days. Dry bulk density, thermal conductivity, porosity, water absorption, and sorptivity of the concretes were determined. Durability characteristics of the concretes were examined by dry shrinkage, high temperature, magnesium sulfate, sulfuric, and hydrochloric acids. The obtained results showed that the content of BF affected the compressive strength of the mixtures slightly negatively or positively depending on the FC. The lowest value in thermal conductivity was gained as 0.645 (W/m K) for the mixture incorporating 1% BF and 50 kg/m3 foam quantity. In addition, the foam concrete incorporating foam of 30 kg/m3 and 1% BF showed the best resistance against MgSO4. The mixture with 2% BF and 30 kg/m3 FC exhibited the lowest mass loss after HCI exposure.

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“…Cement-based material is one of the most important and widely used construction materials nowadays because of its low price, strong compressive strength and long durability. Therefore, they have been applied in energy storage systems, 1 metallurgy industry 2 and nuclear waste containers, 3 in which the cement-based structures are subjected to extreme condition, such as high temperature. A long-term high-temperature environment has adverse effect on microstructures and mechanical properties of the cement-based materials.…”

Section: Introductionmentioning

confidence: 99%

Amplitude-Modulation Vibro-Acoustic Technique for Damage Evaluation

Yin

Vidler

et al. 2022

Structural Health Monitoring

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This study proposes an amplitude-modulation vibro-acoustic (AMVA) technique to track the evolution of thermal damage in pristine graphene mortar. In the proposed amplitude-modulation technique, the pump wave is amplitude-modulated using three different methods: (1) the pure amplitude-modulated (PAM) method, (2) the suppressive amplitude-modulated (SAM) method and (3) the transmitted amplitude-modulated (TAM) method. The nonlinear parameters [Formula: see text], [Formula: see text] and [Formula: see text] corresponding to the PAM, SAM and TAM methods, respectively, are theoretically established and experimentally demonstrated that the nonlinear parameters associated with the material nonlinearity, and they can be used to quantitatively characterize different damage stages of thermal damage. Meanwhile, the resonant frequency (RF) and ultrasonic pulse velocity (UPV) tests are conducted. The linear measurements, dynamic elastic modulus [Formula: see text] obtained from RF test and ultrasonic pulse velocity [Formula: see text] collected by UPV test, are used to compare with the nonlinear parameters. The results show that the proposed AMVA technique is more sensitive and feasible to serve as the tool for thermal damage detection in cement-based material compared with the conventional RF and UPV techniques.

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Evolution of thermo-mechanical properties of concrete with calcium aluminate cement and special aggregates for energy storage

Cited by 36 publications

References 61 publications

Key Challenges for High Temperature Thermal Energy Storage in Concrete—First Steps towards a Novel Storage Design

Key Challenges for High Temperature Thermal Energy Storage in Concrete—First Steps towards a Novel Storage Design

Basalt fiber reinforced foam concrete with marble waste and calcium aluminate cement

Amplitude-Modulation Vibro-Acoustic Technique for Damage Evaluation

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