Behaviour of cementitious mortars containing different kinds of recycled aggregate

Corinaldesi, Valeria; Moriconi, Giacomo

doi:10.1016/j.conbuildmat.2007.12.006

Cited by 201 publications

(129 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Corinaldesi et al (36) and Corinaldesi and Moriconi (12) found that RA mortars displayed higher mortar-brick bond strengths than the reference mortar. Braga et al (18) also achieved significant improvement in the mortar's adherence capacity with the incorporation of 15% concrete fines.…”

Section: Adhesive Strengthmentioning

confidence: 99%

“…However, scientific and technical studies on the use of fine RCA in the manufacture of mortar are scarce. Corinaldesi and Moriconi (12) and Corinaldesi (13) concluded that replacement levels up to 100% by weight of natural sand by recycled concrete sand decreases the flexural and compressive strength with respect to the reference mortar, although the masonry assemblages with recycled mortar displayed excellent mechanical behavior. Dapena et al (14) reported that the compressive strength dropped linearly with the percentage of replacement of natural sand by recycled concrete sand.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A proposal for the maximum use of recycled concrete sand in masonry mortar design

Ledesma¹,

Jiménez²,

Ayuso³

et al. 2016

Mater. construcc.

View full text Add to dashboard Cite

Natural sand mining from rivers and seashores is causing serious environmental problems in many parts of the world, whereas the fine fraction from recycling concrete waste is underutilized as a construction material. The aim of this paper is to determine the maximum replacement level of natural sand by recycled sand in the manufacturing of masonry mortar (M-10). For this purpose, five replacement levels were tested: 0%, 25%, 50%, 75% and 100% by volume. The mixes were made using cement CEM II/BL 32.5 N in a volumetric proportion of cement-to-aggregate of 1:5. A commercial admixture was used at a constant content. The amount of water was variable to achieve a consistency of 175±10 mm. The short-and long-term mortar properties were evaluated. The data were analyzed using a one-way ANOVA. In conclusion, a maximum percentage of 50% recycled concrete sand can be used in an indoor environment. RESUMEN: Propuesta de máximo uso de arena reciclada de hormigón en el diseño de morteros de albañilería.La extracción de arena natural de ríos y costas está provocando graves problemas ambientales en muchas partes del mundo, mientras que la fracción fina de los áridos reciclados de residuos de hormigón está infrautilizada como material de construcción. El objetivo de este artículo es determinar el máximo porcentaje de sustitución de arena natural por arena reciclada en la fabricación de morteros M-10. Cinco niveles de sustitución en volumen fueron ensayados: 0%, 25%, 50%, 75% y 100%. Las mezclas fueron hechas con cemento CEM II/BL 32,5 N en una relación volumétrica cemento-árido de 1:5. Se utilizó un aditivo comercial a dosis constante. El agua se ajustó experimentalmente para conseguir una consistencia de 175±10 mm. Se evaluaron las propiedades de los morteros a corto y largo plazo. Los datos se analizaron mediante una ANOVA-simple. En conclusión, un porcentaje máximo del 50% de arena reciclada de hormigón puede usarse en interiores.

show abstract

Section: Adhesive Strengthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A proposal for the maximum use of recycled concrete sand in masonry mortar design

Ledesma¹,

Jiménez²,

Ayuso³

et al. 2016

Mater. construcc.

View full text Add to dashboard Cite

show abstract

“…Jiménez et al (2013) concluded that the incorporation of up to 40% of ceramic waste in mortars production does not affect significantly the properties of cement mortar in fresh and hardened state, with exception of its density and workability. Corinaldesi and Moriconi (2009) evaluated mechanical and rheological behaviour of cement mortars manufactured using three types of RA: rejected prefabricated concrete material, recycled bricks waste and plant recycling rubble. In three cases, 100% of RA has been used, determining poorer mechanical behaviour and higher mortar-brick bond strength of recycled mortars comparing to traditional mortars.…”

Section: Literature Reviewmentioning

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

141

View full text Add to dashboard Cite

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.

show abstract

“…In concrete production it is common practice today as a partial replacement of natural aggregates since various studies have demonstrated that its performance is satisfactory [4][5][6][7][8][9] . Also, the use of recycled aggregates on mortars has been studied with very interesting results reported [10][11][12] . Several countries already enforce regulations that encourage its use and define the percentage of natural aggregates to be replaced by recycled aggregates 13 .…”

Section: Introductionmentioning

confidence: 99%

A new method to determine the density and water absorption of fine recycled aggregates

2013

View full text Add to dashboard Cite

The construction industry keeps on demanding huge quantities of natural resources, mainly minerals for mortars and concrete production. The depletion of many quarries and environmental concerns about reducing the dumping of construction and demolition waste in quarries have led to an increase in the procuring and use of recycled aggregates from this type of waste. If they are to be incorporated in concrete and mortars it is essential to know their properties to guarantee the adequate performance of the end products, in both mechanical and durability-related terms. Existing regulated tests were developed for natural aggregates, however, and several problems arise when they are applied to recycled aggregates, especially fine recycled aggregates (FRA). This paper describes the main problems encountered with these tests and proposes an alternative method to determine the density and water absorption of FRA that removes them. The use of sodium hexametaphosphate solutions in the water absorption test has proven to improve its efficiency, minimizing cohesion between particles and helping to release entrained air.

show abstract

Behaviour of cementitious mortars containing different kinds of recycled aggregate

Cited by 201 publications

References 7 publications

A proposal for the maximum use of recycled concrete sand in masonry mortar design

A proposal for the maximum use of recycled concrete sand in masonry mortar design

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

A new method to determine the density and water absorption of fine recycled aggregates

Contact Info

Product

Resources

About