Pozzolanic and Cementitious Materials

Malhotra, V. M.; Mehta, PK

doi:10.1201/9781482296761

Cited by 184 publications

(185 citation statements)

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“…In a review of the recent research, the possibility of exploiting industrial byproducts as well as other waste materials to produce normal concrete and high strength concrete when used as a partial or whole replacement of aggregate became evident [11]. It also confirmed that the concrete produced by incorporating industrial wastes possessed superior properties when compared with conventional concrete in terms of strength, performance and durability [12].…”

Section: Introductionmentioning

confidence: 87%

The Effect of sieved Coal Bottom Ash as a Sand Substitute on the Properties of Concrete with Percentage Variation in Cement

Kadam¹,

Patil²

2014

AJCEA

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This paper presents the results of an experimental investigation on the effect of sieved coal bottom ash as a substitute for natural sand on the properties of concrete, when an extra 5%, 10%, 15%, 20%, 25% and 30% weight of cement was added. First, M-35 grade concrete was casted and tested; using a fixed percentage of 70% sieved coal bottom ash and 30% natural sand. The water cement ratio was maintained at 0.45. Then various tests including compressive strength, split tensile strength, flexural strength, density and water permeability were performed on the sieved coal bottom ash concrete. The results were compared with the control concrete and the percentage variations in strength were studied at 7, 28, 56 and 112 days. The results indicate a considerable increase in strength when 20% extra cement was added with the weight of cement.

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Section: Introductionmentioning

confidence: 87%

The Effect of sieved Coal Bottom Ash as a Sand Substitute on the Properties of Concrete with Percentage Variation in Cement

Kadam¹,

Patil²

2014

AJCEA

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“…Despite the use of FA and slag in currently available commercial geopolymer products, MK represents the most promising feedstock material for geopolymers in the future because it has a more consistent chemical composition than FA and slag, and thus is expected to result in more consistent and predictable products. In addition to the cost and technical challenges of the supply chain, the supply of FA and slag is rapidly depleting given that they are used in the manufacture of blending cement and concrete [84,85]. In long-term applications, the use of MK (perhaps together with other Al-and Si-bearing minerals) as raw material is becoming increasingly attractive and realistic.…”

Section: Application Of Byproducts and Waste Products As Potential Ramentioning

confidence: 99%

Green Material Prospects for Passive Evaporative Cooling Systems: Geopolymers

et al. 2016

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Passive cooling techniques have been used mostly in countries with hot and arid climates such as Iran, Egypt, and India. However, the use of this important technology has not been seriously considered until a time of energy crisis, and consequently, environmental crisis scenarios, emerge. Scholars have renewed their interest in investigating passive cooling technology, particularly the aspects of new materials, thermal comfort, energy efficiency, new designs, climate, and environmental considerations. This review paper highlights the opportunities to use green materials, such as geopolymers, as evaporative cooling materials with different types of industrial and agricultural waste products as components. Novel ideas for passive cooling design using ancient and nature-inspired concepts are also presented to promote green technology for future applications.

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“…The use of mineral admixtures in civil construction started before the concrete invention initiated, according to Malhotra and Mehta (1996), in Greece, 1500 year BC with a material of volcanic origin from Santorini Island. These additions spread all over the Roman Empire for the execution of several works (Dal Molin, 2005).…”

Section: State Of the Artmentioning

confidence: 99%

Zeolite, Study of Aptitude as a Natural Pozzolan Applied to Structural Concrete

Raggiotti

Positieri

Locati³

et al. 2015

Revista de la Construcción

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Nowadays, concrete is one of the most widely used construction materials due to its low price, appropriate mechanic characteristics and durability. Also, due to its ease to adopt diverse forms and sizes (Najimi et al., 2012). Owing to the importance in the use of concrete as a structural material and to its impact in the environment as a consumer of great quantities of natural resources and emitter of CO2 in the concrete industry, it is necessary to develop, from the science of materials, mixtures that support the growth of the construction industry and that consider the environment. Therefore, it becomes necessary to develop energetically efficient materials. A natural zeolite was studied as a material with potential pozzolanic activity and as partial replacement in different percentages of Portland cement in structural concrete. The results of the mechanic trials in concrete samples prove the feasibility of using this element as pozzolanic material.Keywords: Zeolite, Concrete, Pozzolan, Mineral Admixture, Replacement. ResumenEn la actualidad, el hormigón es uno de los materiales de construcción más ampliamente utilizados debido a su bajo precio, apropiadas características mecánicas y de durabilidad, así como por su facilidad de adoptar diversas formas y tamaños (Najimi et al., 2012). Debido a la importancia del uso del hormigón como material estructural de construcción y a su impacto ambiental como consumidor de grandes cantidades de recursos naturales y emisor de CO2 en la industria del cemento, es necesario desarrollar, desde la ciencia de materiales, mezclas que acompañen el crecimiento de la industria de la construcción considerando el medioambiente; es decir desarrollar materiales energéticamente eficientes. Se estudió una zeolita natural como un material con potencial actividad puzolánica y como reemplazo parcial en distintos porcentajes del cemento pórtland en hormigones estructurales. Los resultados de ensayos mecánicos en hormigones evidencian la factibilidad de utilizar esta adición como material puzolánico.

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Pozzolanic and Cementitious Materials

Cited by 184 publications

References 0 publications

The Effect of sieved Coal Bottom Ash as a Sand Substitute on the Properties of Concrete with Percentage Variation in Cement

The Effect of sieved Coal Bottom Ash as a Sand Substitute on the Properties of Concrete with Percentage Variation in Cement

Green Material Prospects for Passive Evaporative Cooling Systems: Geopolymers

Zeolite, Study of Aptitude as a Natural Pozzolan Applied to Structural Concrete

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