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blend of 70% quarry dust and 30% laterite was 2.56N/mm2 at water cement ratio of 0.58 while a static modulus of elasticity of 8.86 was obtained from a combination of 75% quarry dust and 25% laterite. Keywords: Compressive strength, Static modulus of elasticity, quarry dust-laterite block, density, quarry dust, laterite I. INTRODUCTION
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The study aimed at assessing the distribution and composition of dust produced at Pomona Stone Quarry mine in Harare, Zimbabwe. The source contribution to ambient PM 2.5 and PM 10 dust levels were ...
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This paper presents a study on the combined use of two by-products, namely quarry dust (QD) and ferronickel slag (FNS), as a full substitute for natural sand to improve the greenness of concrete production. Quarry dust was used in increments of 25% to a maximum of 75% substitution, where nickel slag was used as the remaining …
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Serum TNF-α can be used as a biomarker for detection and follow up of pneumoconiosis in workers exposed to stone dust in quarrying industry. Introduction: The health impacts of working in stone quarrying industry have been well documented. Inhalable dust is produced when the stone is cut and by the breaking of the stones on the quarry …
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Properties of quarry dust2.1.1. Chemical properties. ASTM C618-03 [86] specifies that any material can be classified under the category of mineral admixture: Class F and N pozzolanic having total of SiO 2, Al 2 O 3 and Fe 2 O 3 is at least 70 %.
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Quarry dust was obtained from Hanson Quarry Products, Batu 11, Cheras, Kuala lumpur, Malaysia. The chemical and physical properties of the constituent materials are given in Table 1 . It is clear from the chemical composition of fly ash, billet scale, and quarry dust that they lack the high concentration of CaO which is responsible for high ...
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This study aims to assess the production of cellular micro-concrete, consisting of quarry dust, calcareous fly ash, cement, and aluminum powder as aerating agent. The proposed mixture design methodology is based on a Box–Behnken fractional factorial experimental design. Testing of specimens included compressive and flexural …
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Palm oil fuel ash (POFA) and quarry dust (QD) was used as binders. Both binders were compared based on compressive strength and leaching behavior. Three different ratios of binder were selected in this study, namely, 10%, 20% and 30% and all ratios were tested for 7 days and 28 days by air curing.
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Quarry rock dust (QRD), a waste obtained during the quarrying process is a significant source of air pollution yet has the potential of becoming a sustainable and economical …
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Major findings revealed that the physical and chemical property test of laterite and quarry dust fell within acceptable limits. The bulk densities and specific gravities of laterite and quarry ...
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RESULTS AND DISCUSSION Chemical Properties of cement and Quarry dust used Table 1 shows the properties of the cement and quarry dust used in the moulding of blocks. The cement meets the requirement for Ordinary Portland cement as specified by [8]. The oxide composition of the quarry dust is also very close to that obtained by other …
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Quarry workers' distance away from the crusher (main dust source) and the use of required PPEs are important in determining the magnitude of dust exposure. Crushing is the most significant dust source in stone quarries and dust concentration decreases with increasing distance away from the crusher. 16, 17, 18 Quarry workers …
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Two filler types are commonly used for the production of asphalt mixtures: (i) lime, hydrated lime, or portland cement and (ii) fine particles retained in the separation units of a mixing plant (known as back/back-house filler) or those separated during aggregate production in quarries (quarry dust). We investigated the impact of several quarry ...
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Type of Concrete Materials OPC0QD OPC20QD OPC40QD Coarse 1055 1055 1055 aggregate Sand 690 552 414 Quarry dust 141 282 Cement 400 400 400 Fly ash Water 200 200 200 SP 4.000 4.000 4.000 AEA 0.220 …
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Physical and chemical Properties: The physical and chemical properties of quarry dust obtained by testing the sample as per the Indian Standards are listed in the below table 254 Partial Replacement of Sand with Quarry …
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The bulk generation of quarry dust (QD) from quarries, aggregates, and decorative stone plants, is a serious environmental issue. However, QD has the potential to provide eco …
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The physical and chemical properties of quarry dust satisfy the requirements of the aggregate. It is found that quarry dust improves its mechanical property of concrete. Usage of quarry dust it will also reduce the cost of concrete because it is a waste material from quarry. Dust in concrete will also reduce the disposal problem.
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The chemical compositions of cement, quarry dust and river sand were determined by X-ray fluorescence and are summarized in Table 2. The combined composition of aluminum and iron (Al 2 O 3 + Fe 2 O 3) were 22.82 and 3.60% in quarry dust and river sand, respectively. Also, quarry dust had higher calcium and aluminum …
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For the present research, the compaction and strength characteristics of black cotton soil using lime, quarry dust and the combination of both were studied for samples cured at 3, 7 and 28 days ...
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Purchased from Rock Dust Local LLC, Bridport, Vermont, USA. <1.34 mm: Collected as fine dust from crushing stages and baghouse dust collection from hard-rock drilling processes. Mineralogy and particle size distribution, published in Blanc-Betes et al., 2021: Cragmill: Whin Sill (dolerite) emplacement, Pennsylvanian (Carboniferous).
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Concrete quarry dust blocks (CQDB) are manufactured from a mixture of cement: sand: quarry dust. A descriptive study using structured questionnaires and Laboratory test procedures was conducted to ...
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In the present study the use of dolomite-based quarry-dust (QD) to generate a low-energy, environmentally-friendly structural material was explored. QD was added either as an additive to conventional Portland Cement (PC) or to geopolymeric binders, formed by the alkali activation of local class F fly ash (FA).
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Quarry dust The quarry dust used in the experiment was brought from a crusher unit situated around 10 Km away from Bhubaneswar. The geotechnical properties of quarry dust are: Gravel size3%, Sand size- 81%, Silt size -16%, Specific Gravity-2.77,OMC-9.4%,MDD-20.1kN/m3, Cohesion- 5 KN/m², Angle of internal friction -380, IS …
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This paper focuses on index and Engineering characteristics of Kuttanad clay treated with locally available waste material rice husk ash (RHA) and quarry dust (QD).
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QUARRY DUST: rushed rock aggregate quarrying. C generates considerable volumes of quarry fines, often termed "quarry dust". Quarry dust can be defined as residue, tailing or other non-voluble waste material after the extraction and processing of rocks to form fine particles less than 4.75mm. Test on Materials. Test on Aggregate and Sand. 1.
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Test results showed that the utilization of quarry dust as a co-additive significantly improved the strength and durability of the soil and reduced the shrink-swell potential to …
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chemical reaction period of Portland cement and formed amorphous C-S-H gel, thus decreasing the amount of ... quarry dust and Class F Malaysian fly ash were the primary material used in this study ...
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The quarry dust has been used as a partial replacement for cement proportion at different levels of replacement (25%, 30% and 35%). Quarry dust was used as the main material in this project to measure the effectiveness of concrete performance. In this research, the quarry dust composition was determined by using X-Ray …
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Concrete mechanical properties could be improved through adding different materials at the mixing stage. Quarry dust (QD) is the waste produced by manufactured sand machines and comprise …
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Quarry Rock Dust can be defined as residue, tailing or other non-voluble waste material after the extraction and processing of rocks to form fine particles less than 4.75mm.
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Download Table | Chemical properties of quarry dust from publication: EXPERIMENTAL STUDY ON PARTIAL REPLACEMENT OF COARSE AGGREGATE BY BAMBOO AND …
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