Controllable preparation of aerogel/expanded perlite composite and its application in thermal insulation mortar

Jia, Guanhua; Guo, Jianchun; Zhu, Li

doi:10.1016/j.conbuildmat.2023.132257

Cited by 11 publications

(3 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The calculation computed the impacts of the considered service life (50 years). PP ADP−ff OR GWP = I ins I sol without ins − I sol with ins (20) where I ins is the impact of the thermal insulation material for a given thickness, I sol without ins corresponds to the impacts of the energy consumption in an uninsulated wall and I sol with ins to the impacts of the energy consumption in an insulated wall. The units of ADP-ff and GWP are [MJ•m −2 •year −1 ] and [kg CO 2 eq•m −2 •year −1 ], respectively.…”

Section: Environmental Analysismentioning

confidence: 99%

“…The interest in using such an aggregate is due to its low thermal conductivity (below 0.021 W•m −1 •K −1 [18]), resulting from its nanoporous structure and highly tortuous paths that limit heat transport by radiation, convection and conduction [19]. Therefore, using aerogels in the building sector may contribute to energy conservation and emission reduction [20].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Integrated Performance Evaluation of Aerogel-Based Fibre-Enhanced Thermal Renders Applied on Building Walls

Pedroso,

Silvestre,

Gomes

et al. 2023

Gels

View full text Add to dashboard Cite

In this work, aerogel renders were enhanced with fibres for use in new building walls, emphasising a Mediterranean climate. The main novelty of the study relies on an integrated evaluation of the aerogel-based fibre-enhanced thermal renders from environmental, energy and economic approaches. Therefore, optimum insulation thicknesses, life cycle savings, payback periods, abiotic depletion potential from fossil fuels (ADP-ff) and global warming potential (GWP) impacts were quantified as a function of the energy consumption. The cost optimisation of aerogel-based renders enabled a reduction from 2477.4 to 1021.7 EUR∙m−3 for the reference formulation, and the sisal-optimised render led to the best-integrated performance. A higher DD* (degree-days equivalent) led to higher optimum thicknesses (the Azores required 0.02 m and 0.01 m and Bragança 0.06 m and 0.03 m for cost-optimised and non-optimised thermal renders with sisal fibre, respectively). The optimum thickness related to the ADP-ff and GWP impacts was higher, 0.04 m for the Azores and 0.09 m for Bragança. A steeper decrease in the annual energy consumption occurred for thermal renders up to 0.02 m in the Azores and 0.04 m in Bragança. Aerogel-based fibre-enhanced thermal renders had benefits, mainly from 600 DD* onwards.

show abstract

Section: Environmental Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Integrated Performance Evaluation of Aerogel-Based Fibre-Enhanced Thermal Renders Applied on Building Walls

Pedroso,

Silvestre,

Gomes

et al. 2023

Gels

View full text Add to dashboard Cite

show abstract

“…At present, the main thermal insulation materials commonly used in asphalt mixtures are ceramics, ceramics, glass beads, expanded perlite powder (EP), etc. Among them, EP has been used in thermal insulation materials for decades due to its excellent thermal, acoustic and fire resistance properties [25]. Furthermore, the microwave-absorption performance of the specimen is closely related to the thickness of the heating layer containing microwave-absorbing materials [26].…”

Section: Introductionmentioning

confidence: 99%

Microwave De-Icing Efficiency Improvement of Asphalt Mixture with Structural Layer Optimization and Heat-Resistance Design

Zhang,

Zhou,

Guo

et al. 2024

Materials

View full text Add to dashboard Cite

The application of microwave de-icing technology in road engineering is constrained by its low energy utilization rate, which can be attributed to low heat production rates and ineffective heat dissipation to the underlying pavement. In this work, asphalt mixtures are designed as an upper layer (heating layer) and a lower layer (thermal-resistance layer). Magnetite slag was selected as a microwave-sensitive source for generating heat, and expanded perlite powder was incorporated into the lower layer as a thermal resistance material. Structural layer optimization and thermal-resistance layer design of the asphalt mixture were carried out by changing the thickness of the upper and lower layers to further improve the heat production rates. The design effectiveness is comprehensively evaluated by factors such as the changing law of the average surface temperature of mixtures, ice-melting time, and cost-effectiveness analyses. The results show that EP possesses better thermal stability, lower microwave energy conversion ability and more excellent heat-resistance potential compared with mineral powder. The heat-resistance layer with EP can prevent heat from being conducted to the lower layer and promote it to concentrate on the specimen surface, which can endow the microwave heating efficiency of specimens to be further improved by up to 26.97% and the de-icing time reduced by 10%, ascribed to the heat-resistance design. Furthermore, the collaborative design of the structural layer optimization and heat-resistance layer can increase energy utilization efficiency and save microwave-absorbing materials while ensuring excellent microwave de-icing efficiency.

show abstract

Thermal insulating superhydrophobic composite coating for building thermal management

Tang,

Su,

Zhao

et al. 2024

J Coat Technol Res

View full text Add to dashboard Cite

Controllable preparation of aerogel/expanded perlite composite and its application in thermal insulation mortar

Cited by 11 publications

References 31 publications

Integrated Performance Evaluation of Aerogel-Based Fibre-Enhanced Thermal Renders Applied on Building Walls

Integrated Performance Evaluation of Aerogel-Based Fibre-Enhanced Thermal Renders Applied on Building Walls

Microwave De-Icing Efficiency Improvement of Asphalt Mixture with Structural Layer Optimization and Heat-Resistance Design

Thermal insulating superhydrophobic composite coating for building thermal management

Contact Info

Product

Resources

About