Comparison of natural and manufactured fine aggregates in cement mortars

Gonçalves, Jardel Pereira; Tavares, Luís Marcelo; Filho, Romildo Dias Toledo; Fairbairn, Eduardo de Moraes Rego; Cunha, Emerson Reikdal da

doi:10.1016/j.cemconres.2007.03.009

Cited by 163 publications

(42 citation statements)

References 5 publications

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“…CS cement mortar was obtained with 28% lower sorptivity, 23% higher strength and a considerably more inelastic deformation response compared to NS cement mortar at the same W/C ratio of 0.4. [17] It is obvious that the increase in W/C ratio resulted in a reduction of the compressive strength of concrete. Gonçalves et al [17] observed that this reduction was lower for the case of mortar mixtures using natural fines aggregates, being equal to 26%, and higher for mortar mixtures using manufactured fines aggregates (32%).…”

Section: Introductionmentioning

confidence: 98%

“…[17] It is obvious that the increase in W/C ratio resulted in a reduction of the compressive strength of concrete. Gonçalves et al [17] observed that this reduction was lower for the case of mortar mixtures using natural fines aggregates, being equal to 26%, and higher for mortar mixtures using manufactured fines aggregates (32%). In the same way, the results, presented by Yahia et al [18] showed that for a given W/C, the addition of limestone filler in cement mortar within a certain range did not affect fluidity.…”

Section: Introductionmentioning

confidence: 98%

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Mechanical, hydration, and durability modifications provided to mortar made with crushed sand and blended cements

Meziane

Ezziane

Kenaï

et al. 2015

Journal of Adhesion Science and Technology

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This work aims to evaluate the characteristics of crushed sand (CS), resulting from limestone quarries, when it replaces natural sand (NS) in mortar, and to identify its performances with three types of cement and three W/C ratio. It is concluded that CS has a great effect on mortar properties; it accelerates the hydration of cement grains leading to a shorter setting time, increases the flexural and compressive strengths, generates more hydration heat, and improves the mortar durability. The properties of CS mortar can be predicted as simple relationships of those of NS with an acceptable correlation coefficient.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

Mechanical, hydration, and durability modifications provided to mortar made with crushed sand and blended cements

Meziane

Ezziane

Kenaï

et al. 2015

Journal of Adhesion Science and Technology

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“…Aggregates have remarkable effect on both rheological and mechanical properties of mortar and concrete. The properties of mortars and concrete in the fresh state can be influenced markedly by their specific gravity, particle size distribution, shape and surface texture of the aggregates [23]. Benabeda et al [24] investigated the influence of the different type of fine aggregate on concrete properties.…”

Section: Introductionmentioning

confidence: 99%

Utilization of cold bonded fly ash lightweight fine aggregates as a partial substitution of natural fine aggregate in self-compacting mortars

Güneyisi

Gesoğlu

Altan

et al. 2015

Construction and Building Materials

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“…[10][11][12][13][14][15][16][17] The processed CRF is called manufactured sand (MS) to distinguish it from natural sand and ordinary CRF. [10][11][12][13][14][15][16][17] The processed CRF is called manufactured sand (MS) to distinguish it from natural sand and ordinary CRF.…”

Section: Introductionmentioning

confidence: 99%

Processing crushed rock fine to produce manufactured sand for improving overall performance of concrete

Chow¹,

Yip²,

Kwan

2013

HKIE Transactions

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River sand (RS) and crushed rock fine (CRF) have been used as fine aggregate in concrete for centuries. However, dredging river beds for RS is now banned in many places due to its adverse environmental impacts. On the other hand, CRF has the major problems of being angular in shape and containing excessive fines. To resolve these problems, the technology of processing CRF to improve the particle shape and reduce the fines content has been developed. Such processed CRF is called manufactured sand (MS). In this research, the particle shape, size distribution, fines content and packing density of MS are studied and the effects of using MS on the performance of concrete are investigated. The results showed that the use of MS can improve the workability of fresh concrete and, if advantage is taken to reduce the water content, can reduce the cement content or increase the strength of hardened concrete. There is, therefore, a high potential for engineering the various properties of MS to enhance the overall performance of concrete.

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Comparison of natural and manufactured fine aggregates in cement mortars

Cited by 163 publications

References 5 publications

Mechanical, hydration, and durability modifications provided to mortar made with crushed sand and blended cements

Mechanical, hydration, and durability modifications provided to mortar made with crushed sand and blended cements

Utilization of cold bonded fly ash lightweight fine aggregates as a partial substitution of natural fine aggregate in self-compacting mortars

Processing crushed rock fine to produce manufactured sand for improving overall performance of concrete

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