Construction demolition wastes, Waelz slag and MSWI bottom ash: A comparative technical analysis as material for road construction

Vegas, Íñigo; Ibáñez, J. A.; José, J. T. San; Urzelai, A.

doi:10.1016/j.wasman.2007.01.016

Cited by 139 publications

(73 citation statements)

References 11 publications

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“…Recycling rate is Spain is about 15% of the total production of CDW, which is used mainly as filler in road construction that is also typical far other countries (Vegas et al, 2008 ). The Code on Structural Concrete (EHE-08:2008) permits the usage of coarse fraction of RA in mortar fabrication, recommending substitution of up to 20% of natural sand by RA.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of three types of fine recycled aggregates from construction and demolition waste (CDW), and their use in masonry mortar fabrication

Saíz

Cortina

Martínez

et al. 2016

Journal of Cleaner Production

153

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This research aims to study feasibility of incorporation of fine fraction of recycled aggregates coming from construction and demolition waste in cement-based masonry mortar fabrication. Initially, three types of recycled aggregates: concrete, mixed and ceramic recycled aggregates, were characterized in terms of physical, mechanical and chemical properties. There were used 1 :3 and 1 :4 cement-toaggregate proportions and replacement percentages of 50%, 75% and 100% respectfully far three types of studied recycled aggregates.Physical characterization of recycled aggregates shows a continuous size distribution curve, lower density and higher absorption, what makes the usage of additive necessary to obtain appropriate consistency. Main crystalline phases shown in the X-ray diffraction analysis were: calcite, quartz and gypsum. According to the results of the dosages study, recycled mortars present poorer behaviour than mortars fabricated using natural stand, however, complying with the limits established by the standards and manufacturers. Therefore, the results of this study suggest the possibility to replace 100% of natural sand with analyzed recycled aggregates.

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Section: Introductionmentioning

confidence: 99%

Comparative study of three types of fine recycled aggregates from construction and demolition waste (CDW), and their use in masonry mortar fabrication

Saíz

Cortina

Martínez

et al. 2016

Journal of Cleaner Production

153

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show abstract

“…In the case of crushed aggregate, the quantity of fines should be increased. Fuller suggested that the particle distribution curve of the aggregate (Figure 2) should fit the following equation, where p is the percentage that passes through each sieve; d is the opening of each sieve; and D is the maximum size of the aggregate [1].…”

Section: The Fuller Methodsmentioning

confidence: 99%

“…Fuller sugirió que la curva de distribución granulométrica del árido (Figura 2) debe ajustarse a la siguiente ecuación, donde p es el porcentaje que pasa por cada tamiz, d es el tamaño de cada tamiz; y D es el tamaño máximo del árido [1].…”

Section: El Método De Fullerunclassified

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Métodos granulométricos en la caracterización del árido reciclado para su uso en hormigón estructural

2013

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SUMMARYRecycled aggregate produced at construction and demolition waste plants is frequently used as an ingredient in structural concrete. Nevertheless, the physical, chemical and mechanical properties of this aggregate must be supervised in order to ensure the quality of the final product. Of these properties, one of the most important is particle size which depends to a great extend on the process used to manufacture the aggregate and it directly affects the consistency, workability, uniformity, and mechanical strength of concrete as well as its density, compactness, permeability and resistance to wear. This paper analyzes recycled aggregate samples with various size grading methods to determine their potential use in concrete. On the one hand, results have showed that some differences between different methods existed; on the other hand the manufacturing process should be modified so that the particle size of the recycled aggregate complied with the guidelines in the EHE-08 Code.

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“…Increasing the use of recycled aluminum is also quite important from an ecological standpoint since producing aluminum by recycling creates only about 4% of the CO 2 emissions in comparison with primary production [5]. In addition, the recovery of aluminum from bottom ash reduces the problems of swelling and expansion that aluminum particles cause when bottom ash is reused in concrete production [6][7]. It is noted that some 75% of the bottom ash consists of minerals for which concrete may form a high-end outlet.…”

Section: Introductionmentioning

confidence: 99%

Recovery of Aluminum Residue from Incineration of Cans in Municipal Solid Waste

Hu¹,

Bakker²

2015

JRST

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ABSTRACT:The interest to investigate to which degree aluminum residue from cans may be recovered from MSWI bottom ash. To this end an assessment was made of the cans residue size distribution in bottom ash and its potential for recovery. This study indicates that nonferrous concentrates from Amsterdam bottom ash contain interesting amounts of aluminum cans residue (0.055% of the ash). About 61.7% of the input of aluminum cans are ended after combustion in the 6-20 mm ash fraction. Also it is shown that a combination of dry and wet separation can improve aluminum residue recovery with respect to the single dry process.

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Construction demolition wastes, Waelz slag and MSWI bottom ash: A comparative technical analysis as material for road construction

Cited by 139 publications

References 11 publications

Comparative study of three types of fine recycled aggregates from construction and demolition waste (CDW), and their use in masonry mortar fabrication

Comparative study of three types of fine recycled aggregates from construction and demolition waste (CDW), and their use in masonry mortar fabrication

Métodos granulométricos en la caracterización del árido reciclado para su uso en hormigón estructural

Recovery of Aluminum Residue from Incineration of Cans in Municipal Solid Waste

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