Influence of eggshell powder on the Portland cement mortar properties

Jaber, Hussein Alaa; Mahdi, Rawnaq; Hassan, Ayad K.

doi:10.1016/j.matpr.2019.09.153

Cited by 34 publications

(14 citation statements)

References 15 publications

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“…Additive [10] The addition of eggshell powder in an amount of 7-9% by weight of cement provides an increase in compressive strength up to 55% in comparison with the strength characteristics of samples of Portland cement. [11] According to the results of the study, it was found that the addition of powder in an amount of 15% is the most optimal and provides a decrease in water absorption up to 30%, an increase in compressive strength up to 29%, and a decrease in the thermal conductivity index up to 40% in comparison with similar indicators for samples of the control composition.…”

Section: The Role Of Eggshell In Concrete Source Influence Of Eggshel...mentioning

confidence: 93%

Enhanced Eco-Friendly Concrete Nano-Change with Eggshell Powder

et al. 2022

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One of the unifying factors for all countries is the large consumption of chicken, and other, eggs in food and other types of economic activity. After using various types of eggs for their intended purpose, a large amount of waste accumulates in the form of eggshells. Currently, this problem exists and needs a non-trivial, original solution. The aim of the work was to fill the scientific gap in the direction of studying the microstructure formation of improved nano-modified environmentally-friendly concrete based on eggshell powder and obtaining a concrete composition for the manufacture of an industrial sample of such a material. An environmentally-friendly concrete was obtained, the characteristics of which were improved relative to standard concrete by modifying it with eggshell powder, for which the optimal dosage was determined. The most effective was the replacement of part of the cement with eggshell powder in the amount of 10%. The maximum increase in strength characteristics ranged from 8% to 11%. The modulus of elasticity increased by 4% compared to the control samples without eggshell powder. The maximum reduction in deformations under axial compression and tension in comparison with the control values ranged from 5% to 10%. The study of the composite’s microstructure nano-modified with eggshell powder, and an analysis of the changes occurring in this microstructure due to nano-modification, confirmed the improvement in characteristics and the optimal dosage of eggshell powder.

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Section: The Role Of Eggshell In Concrete Source Influence Of Eggshel...mentioning

confidence: 93%

Enhanced Eco-Friendly Concrete Nano-Change with Eggshell Powder

et al. 2022

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“…Documented research outcomes have shown that fragmentary replacement of Portland cement with calcinated WCES powder improves mechanical strength, compressive strength, flexural strength, and engenders better workability of the concrete [50][51][52][53][54]. In another research, Jaber et al [55][56][57] compared the thermal insulation, hardness, water absorption, hydration, compressive strength and flexural strength of concrete prepared with WCES and that prepared with Portland cement. They reported an improvement in the tested properties of the concrete prepared with WCES.…”

Section: Construction Applicationsmentioning

confidence: 99%

Pathways for Sustainable Utilization of Waste Chicken Eggshell

Awogbemi¹,

Kallon²,

Aigbodion³

2022

Journal of Renewable Materials

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Chicken eggshell is one of the most common wastes generated from households, restaurants and other food processing outlets. Waste Chicken Eggshells (WCES) also constitutes an environmental nuisance and ends up discarded at dumping site with no consideration of further usage. The main constituent of WCES is calcium carbonate from which calcium or calcium oxide can be extracted for various applications. This current effort reviews recently published literature on the diverse applications of WCES. The considered utilization avenues include catalysts for biofuel production, construction industry, wastewater purification, industrial sector, food industry, medical, and agricultural applications. The specific areas of application apart from the transesterification reactions include cement additives and replacement in concrete, asphalt binder, adsorbent of metals and dyes, production of hydroxyapatite, food supplement and fortification, dentistry, therapeutics, bone formation, drug delivery, poultry feeds as well as organic fertilizer. For most of the identified applications, the WCES is subjected to pretreatment and other modification techniques before utilization. The conversion of WCES to valuable products is a cost-effective, safe, environmentally friendly, non-toxic and viable means of waste disposal and utilization. More investigations are needed to further explore the benefits derivable from this bioresource.

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“…Afterwards, they were air-dried for 5 days in the laboratory, then each sample was exposed to 100 °C, 200 °C and 300 °C for 4 hours for testing, see Figure 1. This exposure time was found to be adequate for the complete dehydration of the important mineral ingredients for the SAC: the AFt (ettringite) and Al(OH) 3 solid crystal which make up 40 -70 wt. % and are the most abundant and the most important minerals that make the cement and assure the bonding with different aggregates [10,11,12] as well as other related dehydration reactions and other thermally induced physical changes [13,14].…”

Section: Experimental Set-up and Test Programmementioning

confidence: 99%

“…It also takes less energy to produce than other types of cement. Ordinary Portland cement (OPC) and the rapid sulfoaluminate cement (SAC) are widely used around the world [2,3]. SACC has represented an important area of research in material science since its discovery in the 1970s in China [4, 5, and 6].…”

Section: Introductionmentioning

confidence: 99%

Strengths of Sulfoaluminate Cement Concrete and Ordinary Portland Cement Concrete After Exposure to High Temperatures

Tchekwagep¹

2020

Ceramics - Silikaty

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The use of SAC (sulfoaluminate cement) has been increasing in the constructions of diverse buildings with some close to reactors, which are often exposed to high temperatures in China. This study compares the flexural strength, compressive strength, crack load, mass weight loss, porosity, and flexural stress--strain of the sulfoaluminate cement concrete (SACC) to that of ordinary Portland cement concrete (OPCC) after both are exposed to high temperatures. The results show that the samples of SACC show a rapid decrease in the flexural strength, crack load, and compressive strength after heating, and, thus, cannot be repaired, but should be demolished. Samples made with OPCC can be repaired because the structural integrity remains acceptable after heating. 56 % SACC is < half of its initial strength after heating to 200 °C while OPCC remains at > 90 % of its compressive strength after heating at 200 °C, and retains 80 % of its compressive strength when heated to 300 °C. SACC initially had a higher flexural strength and consequently a higher crack load; therefore, it performed better than the OPCC in terms of the load carrying capacity of the structure. Also, the OPCC had a constant decrease in the strength, compared to the SACC which did not. However, the OPCC has a better resilience strength rating as the temperatures increase than the SACC one because testing revealed a very rapid decrease in the strength after exposure to 100 °C, 200 °C, and 300 °C. The results agree on the better firm structure uniformity and density of the SACC at an ambient temperature (20 °C) compared to the OPCC. The severe deterioration (micro-crack) inside both concretes, revealed by the longer transmitting time and the small amplitude values of the waves, indicated the effective negative impact which is no longer demonstrated when the extreme temperature has a larger effect on the concrete made with SAC, therefore, the other results highlighted the rapid decrease in the strength of the SACC compared to that of the OPCC.

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Influence of eggshell powder on the Portland cement mortar properties

Cited by 34 publications

References 15 publications

Enhanced Eco-Friendly Concrete Nano-Change with Eggshell Powder

Enhanced Eco-Friendly Concrete Nano-Change with Eggshell Powder

Pathways for Sustainable Utilization of Waste Chicken Eggshell

Strengths of Sulfoaluminate Cement Concrete and Ordinary Portland Cement Concrete After Exposure to High Temperatures

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