Experimental Study with Cement Mortars Made with Recycled Concrete Aggregate and Reinforced with Aramid Fibers

Morón, Alberto; Saíz, Pablo; Morón, Carlos

doi:10.3390/app11177791

Cited by 17 publications

(9 citation statements)

References 64 publications

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“…Regarding the chemical composition, this was obtained by X-ray fluorescence using Bruker S2 Puma equipment and is shown in Table 4. Table 4 shows the higher SiO 2 content of RAcon with respect to RAmix, which in turn has a higher CaO and SO 3 content because of gypsum impurities derived from the masonry wall cladding [44]. A higher Al 2 O 3 content is also observed in the RAmix because of the ceramic origin of the bricks used in the execution of masonry works [45].…”

Section: Aggregatesmentioning

confidence: 98%

Experimental Study with Plaster Mortars Made with Recycled Aggregate and Thermal Insulation Residues for Application in Building

2022

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The high demand for natural resources and increased industrial activity is driving the construction sector to search for new, more environmentally friendly materials. This research aims to analyse plaster mortars with the incorporation of construction and demolition waste (CDW) to move towards a more sustainable building sector. Three types of aggregates (natural, recycled concrete and recycled from ceramic walls) and two types of insulation waste (expanded polystyrene with graphite and mineral wool) have been added to the plaster matrix to evaluate its mechanical and physical properties and its suitability in the elaboration of prefabricated materials. The results show how plaster mortars made with recycled aggregates have higher mechanical resistance than conventional plaster without incorporating sand. The incorporation of crushed mineral wool residues improves the flexural strength of plaster mortars and their application in the execution of prefabricated panels. Likewise, the expanded polystyrene residues reduce the final density of mortars, improving their behaviour against water absorption and reducing the final thermal conductivity of plaster material.

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Section: Aggregatesmentioning

confidence: 98%

Experimental Study with Plaster Mortars Made with Recycled Aggregate and Thermal Insulation Residues for Application in Building

2022

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“…The objective of this study is to demonstrate how construction and demolition waste as common as crushed concrete [24][25][26] or ceramic from tiles and bricks [27][28][29] can be used as a secondary raw material that replaces natural aggregates, thus reducing the impact of the mining activity.…”

Section: Introductionmentioning

confidence: 99%

Recycled Aggregates from Ceramic and Concrete in Mortar Mixes: A Study of Their Mechanical Properties

et al. 2022

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In recent decades, large amounts of construction and demolition waste (CDW) have been generated and accumulated throughout Europe, which is a challenge to manage and control nowadays. This work shows the results of a study carried out with samples of ceramic recycled aggregates (CRAs) and recycled concrete aggregates (RCAs) mixed with cement (C) in mortars. The main objective of this research is to demonstrate how, by adding CRAs and RCAs to a mixture of cement and natural aggregate (NA), it is possible to develop a high-strength mortar and achieve the best mixing ratio. To achieve these objectives, the characterization of the samples was initially carried out such as XRF, XRD and SEM. Next, tests were carried out on the products obtained, such as the consistency of the fresh mortar and the density of the specimens. Finally, a study of mechanical compressive strength was performed at 7, 28 and 200 days. The results show that although both CRAs and RCAs negatively affect the curing process of the specimens, it is possible to develop mortars with compressive strengths greater than 20 MPa. An obvious increase in mechanical compressive strengths was seen between 7 and 200 days of analysis. The results achieved in this research could be an important guide for the management of CDWs by local industries, thus favouring the development of the circular economy.

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“…Its most relevant characteristics are collected in Table 3. [57], due to its good characteristics for making mortars. Its main properties include its soft hardness (25 mg CaCO 3 /L) and neutral pH between 7 and 8 recommended to avoid setting alterations [58].…”

Section: Start Of Setting (Min)mentioning

confidence: 99%

Circular Building Process: Reuse of Insulators from Construction and Demolition Waste to Produce Lime Mortars

et al. 2022

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This research aims to revalue the possibilities presented by lime mortars for use in renovation and as cladding material on facades. The study focuses on analyzing the technical feasibility of lime mortars with the incorporation of residues from three types of thermal insulation materials: expanded polystyrene with graphite especially suitable for use on facades; expanded polystyrene for use indoors; and insulating mineral wool. The incorporation of these construction and demolition residues makes it possible to improve several technical performance aspects of lime mortars, and to incorporate circular economy criteria in the manufacturing process of these materials. The results showed that the incorporation of mineral wool improves the mechanical resistance to the bending of mortars, increases their durability against freeze–thaw cycles and salt crystallization, and reduces the final shrinkage of mortars. For their part, mortars with the addition of polystyrene-insulating residues reduce mechanical resistance, but also reduce thermal conductivity, and are lighter, which is why they are shown as a possible alternative for use in precast.

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Experimental Study with Cement Mortars Made with Recycled Concrete Aggregate and Reinforced with Aramid Fibers

Cited by 17 publications

References 64 publications

Experimental Study with Plaster Mortars Made with Recycled Aggregate and Thermal Insulation Residues for Application in Building

Experimental Study with Plaster Mortars Made with Recycled Aggregate and Thermal Insulation Residues for Application in Building

Recycled Aggregates from Ceramic and Concrete in Mortar Mixes: A Study of Their Mechanical Properties

Circular Building Process: Reuse of Insulators from Construction and Demolition Waste to Produce Lime Mortars

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