Sandstone cutting waste as partial replacement of fine aggregates in concrete: A mechanical strength perspective

Mundra, Sanjay; Agrawal, Vinay; Nagar, Ravindra

doi:10.1016/j.jobe.2020.101534

Cited by 34 publications

(11 citation statements)

References 16 publications

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“…In order to avoid this, it is necessary to select the appropriate w/c ratio in mortars with recycled aggregate or to use suitable fluidizing admixtures. The positive effect of recycled aggregate on the strength of cement mortars and concretes has been confirmed by many studies available in the literature [43,[49][50][51][52]. Pavlik et al [43] observed that replacing 25% of natural sand with sandstone aggregate increased the compressive and bending strength of mortars by 15 and 4 (%), respectively, compared to the reference samples.…”

Section: Resultsmentioning

confidence: 78%

“…Pavlik et al [43] observed that replacing 25% of natural sand with sandstone aggregate increased the compressive and bending strength of mortars by 15 and 4 (%), respectively, compared to the reference samples. The studies conducted by Sanjay Mundra M. et al [51] on concrete with aggregate from sandstone waste showed that the highest compressive strength was achieved by the cement composites with fine-grained sandstone aggregate in the amount of 30% with a w/c ratio of 0.4 and 0.45. The authors attributed the increase in strength to a favorable hydration mechanism by creating a homogeneous and dense matrix structure between the aggregate and the slurry.…”

Section: Resultsmentioning

confidence: 99%

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Properties of Mortars with Recycled Stone Aggregate for the Reconstruction of Sandstone in Historic Buildings

Klimek

Grzegorczyk-Frańczak

2021

Sustainability

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The research concerned the mortars with recycled stone aggregate used for the reconstruction of historic objects. The face of stone walls is exposed to atmospheric, chemical, and biological factors, causing its destruction. The aim of the research was to develop a mortar that would be compatible with the stone both in terms of its external appearance as well as its physical and mechanical properties. For this purpose, three mortars based on recycled sandstone aggregate with three different gradations were prepared. The compatibility of stone and mortar was tested in terms of the physical and mechanical properties as well as the resistance to salt and frost corrosion. The mortars reflect the properties of sandstone and offer great opportunities to adjust them as desired. The frost resistance of the mortars was consistent, with practically no weight loss after 25 test cycles. They achieved lower compression strength than stone, which is an important feature in avoiding destruction by using an excessively strong mortar. Moreover, the absorbability of the mortars turned out to be favorable (max. 25%). Mortars were resistant to the destructive effect of salt and did not show the ability to whitewash and desalinate.

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Section: Resultsmentioning

confidence: 78%

Section: Resultsmentioning

confidence: 99%

Properties of Mortars with Recycled Stone Aggregate for the Reconstruction of Sandstone in Historic Buildings

Klimek

Grzegorczyk-Frańczak

2021

Sustainability

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“…In order to achieve a certain fineness, the BP particle need to be ground by corresponding grinding equipment, which not only consumed working time, but also increased the cost. Considering comprehensively, it is not economical to adopt the technical measures of increasing the fineness of BP to improve the compressive strength of concrete [4][5][6][7]. In the actual production and application of concrete, if the stone powder produced by manufactured sand is used, it is recommended to use it directly instead of grinding.…”

Section: Fineness Of Bpmentioning

confidence: 99%

Influence of boulder machine-made sand powder on compressive strength of concrete

Wang¹

2021

E3S Web Conf.

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In order to recycle the boulder powder produced in the process of manufactured sand production and reduce the cost of engineering concrete, this article studied the influence of boulders powder on the compressive strength of concrete. The results show that in the early stage of concrete test, the compressive strength of rock powder concrete is slightly lower than of fly ash and mineral powder concrete. With the development of curing age, the strength of boulders powder concrete developed slower. As the increase of boulders powder content, the compressive strength of different curing age gradually decreased, and it was suggested that the content of boulders powder should be controlled within 20% of cementitious materials mass. The positive effect of boulders powder fineness on the strength of concrete is limited, so it is suggested to use unprocessed collected boulders powder in the project, which is economical and environmentally friendly. With the adjustment of water-to-binder ratio, boulders powder can be prepared with different strength grades of concrete to meet the needs of engineering; the composite of boulders powder with traditional mineral admixtures, such as fly ash, and especially granulated blast furnace slag powder, can significantly improve the strength of concrete.

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“…Arif et al [1] reported that sandstone slurry from Rajasthan, India, can replace up to 15% of the total aggregate, thus reaching compressive and flexural strength values comparable to the control concrete. Mundra et al [12] produced concretes with partial replacement of river sand by sandstone cutting waste from India. The authors observed that the sandstone might be incorporated up to 10%, with water/cement (w/c) ratio of 0.35, and up to 30% replacement content, with w/c of 0.40 and 0.45, without compressive strength losses.…”

Section: Introductionmentioning

confidence: 99%

“…The aforementioned studies indicate the feasibility of OSW as a partial substitution for aggregate or cement in cementitious materials. However, the physical-chemical properties of OSW may vary according to their composition, affecting the properties of pastes, mortars, or concretes produced with them [3,12]. Thus, it is fundamental to investigate sandstone from different regions of the globe.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ornamental Stone Waste Incorporation on the Rheology, Hydration, Microstructure, and CO2 Emissions of Ordinary Portland Cement

et al. 2022

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The ornamental stone industry generates large amounts of waste thus creating environmental and human health hazards. Thus, pastes with 0–30 wt.% ornamental stone waste (OSW) incorporated into ordinary Portland cement (OPC) were produced and their rheological properties, hydration kinetics, and mechanical properties were evaluated. The CO2 equivalent emissions related to the pastes production were estimated for each composition. The results showed that the paste with 10 wt.% of OSW exhibited similar yield stress compared to the plain OPC paste, while pastes with 20 and 30 wt.% displayed reduced yield stresses up to 15%. OSW slightly enhanced the hydration kinetics compared to plain OPC, increasing the main heat flow peak and 90-h cumulative heat values. The incorporation of OSW reduced the 1-, 3-, and 28-days compressive strength of the pastes. Water absorption results agreed with the 28 days compressive strength results, indicating that OSW increased the volume of permeable voids. Finally, OSW incorporation progressively reduced the CO2 emission per m3 of OPC paste, reaching a 31% reduction for the highest 30 wt.% OSW content. Overall, incorporating up to 10 wt.% with OSW led to pastes with comparable fresh and hardened properties as comported to plain OPC paste.

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Sandstone cutting waste as partial replacement of fine aggregates in concrete: A mechanical strength perspective

Cited by 34 publications

References 16 publications

Properties of Mortars with Recycled Stone Aggregate for the Reconstruction of Sandstone in Historic Buildings

Properties of Mortars with Recycled Stone Aggregate for the Reconstruction of Sandstone in Historic Buildings

Influence of boulder machine-made sand powder on compressive strength of concrete

Effect of Ornamental Stone Waste Incorporation on the Rheology, Hydration, Microstructure, and CO2 Emissions of Ordinary Portland Cement

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