Mechanical Properties of Concrete Using Eggshell Ash and Rice Husk Ash As Partial Replacement Of Cement

Asman, Nurul Shahadahtul Afizah; Dullah, Salinah; Ayog, Janice Lynn; Amaludin, Adriana Erica; Amaludin, Hassanel; Lim, Chung Han; Baharum, Aslina

doi:10.1051/matecconf/201710301002

Cited by 13 publications

(8 citation statements)

References 5 publications

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“…Pozzolanic activity of cement is enhanced when RHA is used, this is due to the large quantity of Silica and to the surface area governed by the porous structures of the particle [26]. According to Tangchirapat et al [27], the fineness of cement has influence on the strength of concrete, therefore when RHA is finely grinded, it enhances the reactivity thus allowing the concrete to gain significant strength.…”

Section: Figure 1 Sample Of Rice Husk and Rice Husk Ash [16]mentioning

confidence: 99%

“…Due to RHA's pozzolanic nature and lack of calcium, researchers have attempted to utilize egg shells in addition with RHA as cement replacement in concrete. Asman et al [26], carried out a study to determine the optimum percentage of eggshell ash (ESA) and RHA as partial cement replacement. The eggshell ash was used 2%, 4% and 6% while 8%, 6% and 4% of RHA was utilized.…”

Section: Recent Trends In Combined Utilization Of Rha and Esp In Concmentioning

confidence: 99%

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Green and Sustainable Concrete – The Potential Utilization of Rice Husk Ash and Egg Shells

Jhatial

Goh

et al. 2019

Civ Eng J

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Concrete which is widely used material in the construction industry, has a carbon footprint. Approximately 10% of global Carbon Dioxide (CO2) gas is emitted during the production of cement which is vital ingredient of concrete. The increase in production of cement affects global warming and climate change. Therefore, many have attempts have been made to develop green and sustainable concrete by utilizing different waste materials. With the utilization of waste materials as cement replacement, the CO2 gas emissions can be reduced as well as resolve the environmental issues that the inhabitants face during the disposal of such waste materials. This paper reviews the potential and innovative utilization of Rice Husk Ash (RHA) and Eggshells as partial cement replacement to develop green concrete. RHA which is rich in silica and eggshells contain identical amount of calcium oxide as cement, when finely grinded and used together as partial cement replacement, can trigger a pozzolanic reaction, in which silica reacts with calcium oxide resulting in the formation of calcium silicates which are responsible for achieving higher strengths.

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Section: Figure 1 Sample Of Rice Husk and Rice Husk Ash [16]mentioning

confidence: 99%

Section: Recent Trends In Combined Utilization Of Rha and Esp In Concmentioning

confidence: 99%

Green and Sustainable Concrete – The Potential Utilization of Rice Husk Ash and Egg Shells

Jhatial

Goh

et al. 2019

Civ Eng J

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“…Most of the studies recommend 5% replacement because limestone has complete reactivity up to 5% replacement level [2]. Likewise, eggshells have also been effectively blended in cement along with silica fume (SF) [19][20][21], fly ash (FA) [22][23][24], rice husk ash (RHA) [25], rice straw ash (RSA) [26], glass powder [27], palm oil fuel ash (POFA) [28][29][30][31], and bagasse ash [32]. In addition, eggshells have been used in special concrete as well, both in uncalcined and calcined forms like Foamed concrete [33,34], self-compacting concrete [35][36][37][38][39], and geopolymer concrete [40].…”

Section: Introductionmentioning

confidence: 99%

Eggshells from Different Countries of Origin and Their Sustainable Application as a Partial Replacement of Cement

Maqsood,

Eddie,

et al. 2023

Preprint

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This study aims at the sustainable valorization of eggshells (ES) from different countries of origin in cement concrete as a cement replacement. For this purpose, sixteen different eggs from different regions across the world were selected. Firstly, the extent of uniformity in the weight and mineral content of sampled eggshells was assessed by a specific gravity test and thermogravimetric analysis (TGA), respectively. It was found that specific gravity varies between 2.02 – 2.39, having an average value of 2.20 ± 0.01, whereas the CaCO3 varies between 94.65% - 97.23%, having an average value of 96.33%. These values were a bit lower than extra-pure limestone (LS) because of having organic part and the porous structure of eggshells. Secondly, three different eggshells were selected for cement replacement in cement concrete both in the uncalcined and calcined state based on having the highest, medium, and lowest CaCO3 content, respectively. To get the calcined eggshells, the eggshells were calcined at 800oC for three hours. It was found that the strength of eggshells varies with the CaCO3, but the variation was acceptable. The calcined eggshells showed comparatively more compressive strength and were close to the LS because of free CaO and the absence of an organic part. In general, the variation in the basic properties of eggshells from different regions across the world is negligible and is suitable for use in as a cement replacement with acceptable variation in the strength.

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“…Pozzolan possesses the characteristics of reacting with free lime released during cement hydration to form stable insoluble calcium silicates to reduce sulfate, salt and chloride attacks [22]. Researches in cement and concrete technology have concentrated on the use of waste materials as a potential replacement as alternatives for cement in the concrete industry and the need to introduce new materials or recycled materials as cement replacement materials are gaining popularity and as a result of increasingly stringent environmental legislation [2]. Pozzolanic activity of a material can be assessed by the ability of the material to react with Ca(OH)2(CH) by monitoring the consumption of CH or measuring the strength development.…”

Section: Introductionmentioning

confidence: 99%

“…Eggshell ash is byproducts of agricultural wastes obtained from the calcination of eggshell powder at 500 °C to produce calcium oxide which has shown according to [20] that it is a good accelerator, thereby decreasing the setting time of cement [14]. Eggshell is composed of mostly 93.7 % of calcium carbonates and other constituents like phosphates and magnesium which is similar to limestone, thus can be employed as a partial cement replacement material [2,23]. Authors [20] investigated the effect of ESA from 0-2.5 wt.…”

Section: Introductionmentioning

confidence: 99%

Effect of Locust Bean Pod Ash and Eggshell Ash on the Mortar Compressive and Flexural Strengths of Cement Blends

Olubajo

Jibril

Osha

2020

PoS

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An increase in the generation of biogenic wastes such as locust bean pods and eggshells coupled with the need to drive sustainability in the cement industry has led the use of these wastes as cement replacement materials. The paper aims to investigate the effect of locust bean pod ash (LBPA) and eggshell ash (ESA) on the mortar compressive and flexural strength of ternary cement blends. The LBPA was obtained by calcining locust bean pod (LBP) at various temperatures of 800-900 °C and time of 60-120 minutes at an interval of 50 °C and 30 minutes respectively to determine the optimal conditions. The chemical composition of Ordinary Portland cement (OPC), LBPA and ESA were obtained via X-ray Fluorescence (XRF) Spectrometer and LBPA chemical composition did not satisfy one of the requirements specified by ASTM C618-01 (2001) with SiO 2 + Al 2 O 3 +Fe 2 O 3 of 30.42 wt. % which is less than 50 wt. %, but satisfies SO 3 content requirement of 0.7 wt. % and Loss on Ignition (LOI) of 7.12 wt. % and contains 19.42 wt. % CaO which is within the range of 10-30 wt. % CaO is class C pozzolan. The compressive strength of blended cement mortars at the early age of 2 and 7 days produced better strengths for cement blends with higher ESA content than LBPA especially at LBPA/LBPA-ESA ratio of 0, 0.4 and 0.6 for 2.5 wt. % cement replacement respectively. The early strength gain could be attributed to the provision of more nucleation sites by ESA inclusion which results in the acceleration of cement hydration rate. On the other hand, the enhanced strengths at 28 days of cement blended with various replacement from 2.5-10 wt. % could be attributed to the pozzolanic reaction between the available lime and reactive silica from LBPA despite clinker diminution which was close to control. Another reason for enhanced strength' could be attributed to the increased potassium content by an increase in LBPA content resulting in a gradual strength gain (retarder) muscovite formation K 2 Al 2 Si 6 Al 4 O 20 (OH) 4. All cement blends experienced an increase in the mortar compressive and flexural strengths as the curing day progressed with some blends producing enhanced strength compared to control especially with 1.5 ESA1LBPA produced the best strength at 50.15 (6.82) N/mm 2 against 48.80 (6.80) N/mm 2. This enhanced strength could be related to the pozzolanic activity and the high potassium content from LBPA despite clinker diminution, especially at 28 days.

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Mechanical Properties of Concrete Using Eggshell Ash and Rice Husk Ash As Partial Replacement Of Cement

Cited by 13 publications

References 5 publications

Green and Sustainable Concrete – The Potential Utilization of Rice Husk Ash and Egg Shells

Green and Sustainable Concrete – The Potential Utilization of Rice Husk Ash and Egg Shells

Eggshells from Different Countries of Origin and Their Sustainable Application as a Partial Replacement of Cement

Effect of Locust Bean Pod Ash and Eggshell Ash on the Mortar Compressive and Flexural Strengths of Cement Blends

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