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

Yousefi, Ali Akbar; Tang, Waiching; Khavarian, Mehrnoush; Fang, Cheng; Wang, Shanyong

doi:10.3390/app10072246

Cited by 36 publications

(19 citation statements)

References 43 publications

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“…The influence of different sizes of glass aggregates on the properties of self-compacting mortar was carried out by Ling and Poon [ 31 ]. Meanwhile, Yousefi et al [ 32 ] investigated the impact of different particle sizes of expanded glass aggregate (EGA) on the compressive strength. Bostaci et al [ 33 ] used 15% of glass sand from recycling with a particle size of up to 5 mm and obtained an 8.1% decrease in compressive strength.…”

Section: Introductionmentioning

confidence: 99%

Effect of Waste Glass Addition as a Replacement for Fine Aggregate on Properties of Mortar

et al. 2020

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A responsible approach towards sustainable development requires the use of environmentally friendly, low-carbon, and energy-intensive materials. One positive way is to use glass waste as a replacement for fine natural aggregate. For this purpose, the effects of adding glass cullet to the mechanical properties of mortar were carried out. The glass aggregate made from recycled post-consumer waste glass (food, medicine, and cosmetics packaging, including mostly bottles), were used. This experimental work included four different contents of fine glass cullet (5, 10, 15, and 20 wt.% of fine aggregate). The compressive, flexural, and split tensile strengths were evaluated. Moreover, the modulus of elasticity and Poisson coefficient were determined. The addition of glass sand aggregate increases the mechanical properties of mortar. When comparing the strength, the obtained improvement in split tensile strength was the least affected. The obtained effect for the increased analysed properties of the glass sand aggregate content has been rarely reported. Moreover, it was determined that by increasing the recycled glass sand aggregate content, the density of mortar decreased. In addition, the relationships between the properties for mortar containing glass sand aggregate were observed.

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Section: Introductionmentioning

confidence: 99%

Effect of Waste Glass Addition as a Replacement for Fine Aggregate on Properties of Mortar

et al. 2020

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“…Silica aerogel is a lightweight thermal insulating material having low density and high specific surface area, allowing its application in many areas 20 . Expanded glass aggregates is also a thermal conducting material with porous structure 21 . Lightweight aggregates are 25–35% lighter than the conventionally used aggregates 19 .…”

Section: Introductionmentioning

confidence: 99%

“…They reported that an optimal graduating of lightweight aggregates could reduce the porosity of lightweight aggregate concrete and improve mechanical performance. Major studies have been presented on the use of lightweight aggregate such as fly ash 26 , 27 , expanded glass aggregate 28 , silica aerogel 21 in cement mortar. A study conducted by Yousefi et al 21 reported a decrease in compressive strength of cement mortar containing expanded glass aggregates, however inclusion of nano titanium dioxide as nanomaterials increased compressive strength by 39.02%.…”

Section: Introductionmentioning

confidence: 99%

Effects of carbon nanotubes on expanded glass and silica aerogel based lightweight concrete

Adhikary

Rudžionis

Tučkutė

et al. 2021

Sci Rep

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This study is aimed to investigate the effect of carbon nanotubes on the properties of lightweight aggregate concrete containing expanded glass and silica aerogel. Combinations of expanded glass (55%) and hydrophobic silica aerogel particles (45%) were used as lightweight aggregates. Carbon nanotubes were sonicated in the water with polycarboxylate superplasticizer by ultrasonication energy for 3 min. Study results show that incorporating multi-wall carbon nanotubes significantly influences the compressive strength and microstructural performance of aerogel based lightweight concrete. The addition of carbon nanotubes gained almost 41% improvement in compressive strength. SEM image of lightweight concrete shows a homogeneous dispersal of carbon nanotubes within the concrete structure. SEM image of the composite shows presence of C–S–H gel surrounding the carbon nanotubes, which confirms the cites of nanotubes for the higher growth of C–S–H gel. Besides, agglomeration of carbon nanotubes and the presence of ettringites was observed in the transition zone between the silica aerogel and cementitious materials. Additionally, flowability, water absorption, microscopy, X-ray powder diffraction, and semi-adiabatic calorimetry results were analyzed in this study.

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

Cited by 36 publications

References 43 publications

Effect of Waste Glass Addition as a Replacement for Fine Aggregate on Properties of Mortar

Effect of Waste Glass Addition as a Replacement for Fine Aggregate on Properties of Mortar

Effects of carbon nanotubes on expanded glass and silica aerogel based lightweight concrete

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

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