Thermal Conductivity and Frost Resistance of Foamed Concrete With Porous Aggregate

Namsone, Eva; Šahmenko, Genādijs; Korjakins, Aleksandrs

doi:10.17770/etr2017vol3.2625

Cited by 9 publications

(10 citation statements)

References 8 publications

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“…In addition, it was observed that as the EGA content increased from 50% to 100%, the compressive strength dropped dramatically from 26.25 to 8.20 MPa at the age of 28 days. It is noteworthy that the compressive strength was still in the acceptable range and similar or higher than reported results in the literature [21,25]. Namsone et al [25] reported the 28-day compressive of 5.7 MPa for a foamed matrix using EGA and obtained the compressive strengths of 6.68-12.49 MPa for the EGA cement mortar.…”

Section: Compressive Strengthsupporting

confidence: 78%

“…It is noteworthy that the compressive strength was still in the acceptable range and similar or higher than reported results in the literature [21,25]. Namsone et al [25] reported the 28-day compressive of 5.7 MPa for a foamed matrix using EGA and obtained the compressive strengths of 6.68-12.49 MPa for the EGA cement mortar. Indeed, the samples containing 100% EGA without nTiO 2 had the lowest compressive strength out of all the mixes.…”

Section: Compressive Strengthsupporting

confidence: 78%

“…The results also confirmed that EGA could be applied in the cementitious composites without limitation related to the alkali-silica reaction. In the experiment conducted by Namsone et al [25], a foamed matrix was prepared using EGA and the mechanical, thermal and frost resistance properties were examined. They obtained the compressive of 4.7 and 5.7 MPa at the age of 7 and 28 days and the thermal conductivity of 0.152-0.108 W/m.K.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Compressive Strengthsupporting

confidence: 78%

Section: Compressive Strengthsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

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

et al. 2020

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“…Cast-in-place concrete provides a much wider range of concrete applications, e.g., wall structures, floor and road thermal insulation, and floor and roof screeds [13][14][15]. Light composites with foamed aggregates have extremely good thermal and acoustic insulation, fire resistance, and resistance to earthquakes compared to traditional concrete [16][17][18][19][20][21][22][23]. The good workability and fluidity of the concrete mix gives the opportunity to form unrestricted shapes.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of Mechanical Properties of Lightweight Concretes (LWCs) with Various Aggregates

Kurpińska

Ferenc

2020

Materials

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High requirements for the properties of construction materials and activities directed at environment protection are reasons to look for new solutions in concrete technology. This research was directed at solutions affecting the reduction of energy consumption and CO2 emissions. The use of lightweight concretes (LWCs) allows one to meet both conditions at the same time. The purpose of the research presented in this paper was to investigate the abilities of using lightweight aggregates (LWAs) of the following types: 2 and 4 mm granulated expanded glass aggregate (GEGA) as ingredients with excellent insulating properties and 8 mm granulated fly ash aggregate (GAA) as an ingredient with a relatively high resistance to crushing. The influence of the percentage participation of each aggregate in all LWCs was variable and amounted to 0%, 25%, 50%, 75%, and 100%. A series of 15 LWC mixes were prepared for various LWA participations and for a constant water–cement ratio (w/c = 0.5). Concrete tests were carried out for the following criteria: density, porosity, compressive strength, and the modulus of elasticity. In order to fully analyze fracture processes in LWCs with the participation of GEGA and GAA and to assess the correctness of the results obtained during the experiments, numerical models that corresponded to both geometrical and load diagrams of elements under research were created. The numerical analyses of the LWCs were conducted by means of the conventional finite element method (FEM).

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“…At the moment the sector of building has reached almost half of total energy consumption -in general they are 40 percent. (Namsone, Sahmenko, Namsone, & Korjakins, 2017a, 2017b.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on foamed concrete produced using a planetary ball mill

Namsone

Šahmenko

Namsone

et al. 2019

Modern Building Materials, Structures and Techniques (MBMST)

Self Cite

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The experimental study is devoted to investigation on foamed concrete produced applying innovative intensive mixing technology by using a planetary ball mill. Modern type of foamed concrete represents cementitious composite material group which may be competitive with traditionally used autoclaved aerated concrete. Innovative mixing method makes possible stabilizing of foamed concrete mixture and improving the microstructure of material. The aim of this study is to investigate physical and mechanical properties of non-autoclaved concrete such as density and compressive strength, and capillary water absorption depending on intensive mixing time. In this research microstructure, such as pore size diameters, depending on mixing time is also analysed.

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Thermal Conductivity and Frost Resistance of Foamed Concrete With Porous Aggregate

Cited by 9 publications

References 8 publications

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

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

Experimental and Numerical Investigation of Mechanical Properties of Lightweight Concretes (LWCs) with Various Aggregates

Experimental investigation on foamed concrete produced using a planetary ball mill

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