Contribution of structural lightweight aggregate concrete to the reduction of thermal bridging effect in buildings

Real, Sofia; Gomes, M. Glória; Rodrigues, A. Moret; Bogas, José Alexandre

doi:10.1016/j.conbuildmat.2016.06.018

Cited by 158 publications

(73 citation statements)

References 11 publications

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“…The average thermal conductivity of NVC and RCCP samples is about 2.45 W/m.°K and 2.60 W/mK, respectively. Based on literature, the thermal conductivity of lightweight concrete is in the range of 0.2 to 1.9 W/m.°K, while it is up to 3.3 W/mK for normal weight concrete [54][55][56][57]. The results show that the k-value of both NVC and RCCP is in the range of normal weight concrete.…”

Section: Table 5 Average Thermal Conductivity and Density Of Samplesmentioning

confidence: 97%

Laboratory comparison of roller-compacted concrete and ordinary vibrated concrete for pavement structures

2020

JCE

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Laboratory comparison of roller-compacted concrete and ordinary vibrated concrete for pavement structures The roller-compacted concrete pavement (RCCP) has the same ingredients as the pavement made of normal vibrated concrete (NVC). Microstructure images show that RCCP has higher pack density compared to NVC specimens. The 28-day compressive, splitting tensile, and flexural strengths of RCCP are by 9%, 4%, and 25% higher than those of NVC. The final water absorption and porosity values are by about 8% and 10.6% lower for RCCP in comparison with NVC.

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Section: Table 5 Average Thermal Conductivity and Density Of Samplesmentioning

confidence: 97%

Laboratory comparison of roller-compacted concrete and ordinary vibrated concrete for pavement structures

2020

JCE

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“…The construction industry is a potential sector for utilization of waste glass. In this regard, use of solid wastes for manufacturing the building materials with high thermal insulation properties is an effective approach toward sustainable development and decreasing the energy consumption in buildings [4][5][6]. It has been reported that the incorporation of insolation materials in the building can reduce the indoor temperature fluctuation up to 4 • C that would save 10-30% of energy usage [1,2].…”

Section: Introductionmentioning

confidence: 99%

Thermal and Mechanical Properties of Cement Mortar Composite Containing Recycled Expanded Glass Aggregate and Nano Titanium Dioxide

et al. 2020

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One of the growing concerns in the construction industry is energy consumption and energy efficiency in residential buildings. Moreover, management of non-degradable solid glass wastes is becoming a critical issue worldwide. Accordingly, incorporation of recycled expanded glass aggregates (EGA) as a substitution for natural fine aggregate in cement composites would be a sustainable solution in terms of energy consumption in the buildings and waste management. This experimental research aims to investigate the effects of EGA on fresh and hardened properties and thermal insulating performance of cement mortar. To enhance the mechanical properties and water resistance of the EGA-mortar, nano titanium dioxide (nTiO2) was used as nanofillers. The results showed an increase in workability and water absorption of the EGA-mortar. In addition, a significant decrease in bulk density and compressive strength observed by incorporating EGA into the cement mortar. The EGA-mortar exhibited a low heat transfer rate and excellent thermal insulation property. Furthermore, inclusion of nTiO2 increased compressive strength and water resistance of EGA-mortar, however, their heat transfer rate was increased. The results demonstrated that EGA-mortar can be integrated into the building envelop or non-load bearing elements such as wall partition as a thermal resistance to reduce the energy consumption in residential buildings.

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“…Ge and Baba (2015) used a similar approach to compare the energy performance of a low-rise residential building and concluded that this approach helps improve the accuracy of heating and cooling load predictions. (Real et al (2016) used this approach to study the effects of structural lightweight aggregate concrete on the reduction of thermal bridging effects in residential buildings.…”

Section: Modeling Thermal Bridging and Infiltrationmentioning

confidence: 99%

Wall Upgrades for Residential Deep Energy Retrofits: A Literature Review

Antonopoulos

Metzger

Zhang

et al. 2019

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In the United States, 39% of total energy is consumed by the building sector, 20% of the total is attributed to residential buildings (U.S. Energy Information Administration, 2018). New, highperformance homes incorporate a combination of tight building envelopes, mechanical ventilation, and efficient components to ensure comfort, adequate airflow, and moisture control. These systems work together to create energy efficient homes that use measures to manage moisture, comfort, energy efficiency, and the indoor environment. Older homes, built before 1992 when the U.S. Department of Energy's Building Energy Codes Program was established represent approximately 68% of residential building stock in the country and often have significant air leakage and inadequate insulation. Homes with little to no air sealing or insulation have heating and cooling losses that can represent a substantial portion of utility bills. Done correctly, deep energy retrofits can significantly improve the energy performance of a home's thermal envelope, and increase homeowner comfort and health. This literature review summarizes current practices for exterior wall retrofits for existing homes, provides an overview of techno-economic approaches to investigating residential wall systems, and discusses thermal and hygrothermal modeling strategies. This literature review is part of a larger effort to identify state-of-the-art technologies for energy efficient wall retrofit systems that are suitable for cold and very cold climate zones. Retrofit wall systems that can be applied over existing siding offer a possible approach to reducing installation costs.

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Contribution of structural lightweight aggregate concrete to the reduction of thermal bridging effect in buildings

Cited by 158 publications

References 11 publications

Laboratory comparison of roller-compacted concrete and ordinary vibrated concrete for pavement structures

Laboratory comparison of roller-compacted concrete and ordinary vibrated concrete for pavement structures

Thermal and Mechanical Properties of Cement Mortar Composite Containing Recycled Expanded Glass Aggregate and Nano Titanium Dioxide

Wall Upgrades for Residential Deep Energy Retrofits: A Literature Review

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