Utilization of coal bottom ash to improve thermal insulation of construction material

Torkittikul, Pincha; Nochaiya, Thanongsak; Wongkeo, Watcharapong; Chaipanich, Arnon

doi:10.1007/s10163-015-0419-2

Cited by 62 publications

(29 citation statements)

References 32 publications

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“…When considering the relation between porosity and thermal conductivity, as shown in Fig. 10, it was found that the increase in porosity or gaps in the material will reduce the thermal conductivity, which is according to the reports of Torkittikul et al (2017). It was also found that the decrease in thermal conductivity will be a linear decrease as the porosity increases, which is consistent with this study.…”

Section: Effects On Thermal Conductivity and Sound Absorption Of Intesupporting

confidence: 89%

Innovation of Interlocking Block Mixing with Biomass for Sound Absorption and Thermal Conductivity in Thailand

Intaboot

2020

ACT

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This study involved the application of natural materials to produce interlocking blocks for thermal conductivity and sound absorption by mixing rice straw and rice husk ash. The ratios of soil, cement and sand used in the mix was 5:1:1. The mixing ratios of rice straw were zero, 1, 2 and 3% and those of rice husk ash were 10, 20 and 30% of the weight of cement. The test included the measure of compressive strength, unit weight, water absorption, porosity, thermal conductivity and sound absorption using blocks at the age of 28 days. The results showed that the addition of rice straw caused the compressive strength to reduce, while porosity and water absorption were increased. The addition of rice husk ash helps to improve the compressive strength and unit weight. All of these qualities passed the Thai Industrial Standard TIS 58-2533 (TIS 1990). The increasing of rice straw and rice husk ash resulted in low thermal conductivity and better sound absorption. Therefore, rice straw and rice husk ash are interesting materials in the production of energy-saving building materials.

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Section: Effects On Thermal Conductivity and Sound Absorption Of Intesupporting

confidence: 89%

Innovation of Interlocking Block Mixing with Biomass for Sound Absorption and Thermal Conductivity in Thailand

Intaboot

2020

ACT

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“…It was concluded that its incorporation did not affect the mechanical properties of the mortars with respect to minimum required specifications [3]. Similarly, Andrade et al (2009) and Torkittikul et al (2017) suggested the use of bottom coal ash as a partial replacement of fine aggregates in concrete [4,5]. Results showed that as the incorporation volumes of coal bottom ash increased, the compressive strength remained the same as the control specimens, while the total shrinkage deformation as well as the density of mortar and concrete decreased noticeably, rendering it lightweight [4,5].…”

Section: Introductionmentioning

confidence: 95%

“…Similarly, Andrade et al (2009) and Torkittikul et al (2017) suggested the use of bottom coal ash as a partial replacement of fine aggregates in concrete [4,5]. Results showed that as the incorporation volumes of coal bottom ash increased, the compressive strength remained the same as the control specimens, while the total shrinkage deformation as well as the density of mortar and concrete decreased noticeably, rendering it lightweight [4,5]. Bilir et al (2015) studied the influence of fly ash as fine aggregate in mortar by studying its effect on workability, unit weight, compressive and flexural strength, modulus of elasticity, and stress-strain behavior [6].…”

Section: Introductionmentioning

confidence: 96%

Mechanical and Microstructure Properties of Biochar-Based Mortar: An Internal Curing Agent for PCC

Mrad

Chehab

2019

Sustainability

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In pursuing sustainability targets, the construction industry has witnessed significant efforts exerted on exploring new alternatives for raw materials. Such initiatives aim to alleviate concerns of overexploitation of natural resources leading to their depletion. On a different note, the disposal of municipal solid waste (MSW) has also become a major concern in some countries, such as the case of Lebanon, where illegal dumping continues to take its toll on the environment. Pyrolysis has been introduced as a biomass decomposition process of MSW and is considered an environmentally friendly process that can mitigate open dumping. However, pyrolysis produces significant amounts of biochar as a byproduct that in turn needs to be disposed of or treated. This research aims to investigate the viability of using biochar as a sustainable alternative material to sand in cementitious mortar composites. A thorough microscale physicochemical characterization of the biochar is conducted prior to its inclusion in mortar. Then, its incorporation as a partial replacement of sand in mortar is assessed at the mesoscale level, based on performance indices that included compressive strength and microstructure properties. Analysis of the experimental results are used to provide guidelines and recommendations as to the effective incorporation of biochar fraction in cementitious mortar.

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“…As the percentage of PLA inclusion increases in volume when compared to an earlier case, there is more provision for free space because PLA granules are round and glossy shine at the outer face resulting in improper bonding of concrete paste as shown in Figure 36a-d Figure 36d illustrates the interfacial transition zone (ITZ) between cement paste and PLA. The ITZ can even be extracted from Back Scattered Image (BEI) from SEM machines [10]. Here, the work was focused only to identify the ITZ in the SEM images.…”

Section: With 30%pla Replacement For Fine Aggregatementioning

confidence: 99%

Multi-Scale Study on Mechanical Property and Strength of New Green Sand (Poly Lactic Acid) as Replacement of Fine Aggregate in Concrete Mix

et al. 2020

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Polylactic acid (PLA) has made inroads in the commercial market segment with many unique characteristics. To list a few, such as tenacity, low flame rate, moisture regain percentage, loss of ignition percentage, combustion heat, UV resistance, elastic recovery, and higher melting point, make PLA a predominant material in the commercial market. This study is an attempt to test the feasibility of PLA’s mechanical property and strength aspects with cement mix. An article published on biodegradability aspects backed up by the essential preliminary strength and physical test results is discussed in detail in this manuscript. The work focuses on the multi-scale study along with mechanical properties and strengths to evaluate the elemental characteristics. Thermo gravimetric analysis revealed that PLA would hold inclusion into construction applications either in granular form or filament. Differential Scanning Calorimetry (DSC) found that PLA in filament form is the best inclusion material for construction applications. However, fiber’s tenacity has to be checked, as currently available filaments in the market do not have high tenacity value. From EDX(Energy-dispersive X-ray Spectroscopy) reports, 30% inclusion of PLA as a replacement for fine aggregate has constituent members as Calcium carbonate(CaCO3), Silica(SiO2), and Wollastonite (CaK) resulted in the best composition among the rest. FESEM images revealed that proper gradation in size, PLA granular form’s rough surface, or filament form would enhance the mechanical/physical behavior or even PLA’s chemical behavior.

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Utilization of coal bottom ash to improve thermal insulation of construction material

Cited by 62 publications

References 32 publications

Innovation of Interlocking Block Mixing with Biomass for Sound Absorption and Thermal Conductivity in Thailand

Innovation of Interlocking Block Mixing with Biomass for Sound Absorption and Thermal Conductivity in Thailand

Mechanical and Microstructure Properties of Biochar-Based Mortar: An Internal Curing Agent for PCC

Multi-Scale Study on Mechanical Property and Strength of New Green Sand (Poly Lactic Acid) as Replacement of Fine Aggregate in Concrete Mix

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