Influence of the levels of replacement of portland cement by metakaolin and silica extracted from rice husk ash in the physical and mechanical characteristics of cement pastes

Cavalcante, Daiana Goes; Marques, Maria Gorett dos Santos; Filho, João de Almeida Melo; Vasconcelos, Raimundo Pereira de

doi:10.1016/j.cemconcomp.2018.10.001

Cited by 23 publications

(5 citation statements)

References 35 publications

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“…The chemical investigation by various authors shows that Rice husk ash is a silica-rich material that contains more than 80 % silica [11][12][13][14][15][16][17][18][19][20]. Various research work about rice husk ash show that it has a positive influence on the strength as well as the durability of concrete [8,[10][11][12][13]19].…”

Section: Introductionmentioning

confidence: 99%

“…Various research works on the use of rice husk ash in concrete show that rice husk ash can be effectively used in concrete to make it stronger, more durable and more ecofriendly [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. The limited research on the application of rice husk ash in brick aggregate concrete creates a room for more research work on this particular topic [21].…”

Section: Introductionmentioning

confidence: 99%

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A comparative study between brick and stone aggregate concrete using rice husk ash as partial cement replacement

Bhowmik

Pal

2022

Materialwissenschaft Werkst

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Today's world cannot be imagined without the application of concrete. Although as a constituent of concrete stone aggregate is mostly used, there are certain areas on this earth where it is scarcely available which leads to the use of brick aggregate. Moreover, as supplementary cementitious material, use of rice husk ash is beneficial to our environment. So, the study presents the possibility of using the brick aggregate and rice husk ash to the possible extent in making concrete by comparing stone and brick aggregate concrete, with rice husk ash as partial cement replacement. The specimens were prepared using water to binder ratios varying from 0.38 to 0.54. Properties of fresh and hardened concrete were measured using different tests on the specimens.The results of the mechanical tests were also co-related with the microscopic image studies.This study finds that for a higher grade of concrete optimum rice husk ash replacement varies between 5 % to 10 % and for lower grade of concrete the rice husk ash replacement varies between 10 % to 15 %. The study also shows that using rice husk ash, brick aggregate concrete exhibits better improvement in comparison to stone aggregate concrete.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A comparative study between brick and stone aggregate concrete using rice husk ash as partial cement replacement

Bhowmik

Pal

2022

Materialwissenschaft Werkst

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“…Although cement production initially focused on ordinary Portland cement (OPC), a fraction of this cement was replaced by supplementary cementitious materials from different sources: paper sludge [5], bamboo leaf ash [6], paper sludge and fly ash [7], drinking-water treatment waste [8], calcination of biomass [9], agricultural products [10], coal-mining waste [11], sugar cane bagasse ash [12], palm oil fuel ash [13], rice husk ash [14], coal-mining tailings [15], and others. In the future, all cements will need to be based on materials that are globally available in sufficient quantities.…”

Section: Introductionmentioning

confidence: 99%

Properties of Green Mortar Containing Granite Sawmill

et al. 2021

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The cement industry is one of the world’s largest CO2 emitters. The need to minimize these emissions, and assimilate by substitution and different types of waste, are challenges faced in the European Union. The use of granite sawmill from the ornamental stone industry allows for the manufacturing of pozzolanic cements, in which 10% and 20% of ordinary Portland cement (OPC) has been replaced by waste. In the present paper, properties of cements and mortars have been tested (when fresh and once set), such as workability, setting, retraction, mechanical resistance to bending and compression, elastic modulus to compression, creep, retraction, and durability. In all cases and substitution proportions, the results have been as satisfactory as those achieved with OPC, even better, allowing a second life to the waste, and participating in the principles of the circular economy. Bot substitutions are very resistant and have great durability for the gelifraction processes from the new green cements. Using this waste—granite sawmill—its volume is minimized and transfer to a landfill is avoided.

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“…In the concrete production, cement from portland clinker, as its main component, is considered to be the most demanding from the energy consumption point of view and subsequently from the environmental pollution contribution point of view [1,2,3]. With the aim to reduce the content of pure clinker in the cement, some mineral additives with pozzolanic (like fly ash, metakaolin, zeolite, silica fume) or latent hydraulic (like ground granulated blast furnace slag GGBS) properties are added directly to the cement as supplement or during concrete production as additive [4,5,6,7,8,9]. Considering the complexity of concrete designing issue as a result of technical, economic and environmental requirements, these materials should undergo also detailed assessment before their incorporation into the concrete.…”

Section: Introductionmentioning

confidence: 99%

Study on utilization of zeolite in concrete precast industry

Figmig

Kováč

2019

Selected Scientific Papers - Journal of Civil Engineering

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Article contains experiment investigating influence of partial cement replacement by zeolite on consistency of fresh concrete, early compressive strength development and temperature development in early stages of curing. Four concrete mixture compositions were tested – containing zeolite in 0%, 5%, 10% and 15% of binder weight. Consistency was tested by flow table test in 5 minutes and 30 minutes after mixing of fresh concrete. Compressive strength and temperature gain were tested after 12, 16, 20 and 24 hours of curing. Results showed significant influence of zeolite on consistency of fresh concrete while compressive strength results were still in the acceptable range.

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Influence of the levels of replacement of portland cement by metakaolin and silica extracted from rice husk ash in the physical and mechanical characteristics of cement pastes

Cited by 23 publications

References 35 publications

A comparative study between brick and stone aggregate concrete using rice husk ash as partial cement replacement

A comparative study between brick and stone aggregate concrete using rice husk ash as partial cement replacement

Properties of Green Mortar Containing Granite Sawmill

Study on utilization of zeolite in concrete precast industry

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