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Site Mobilization and Kick-Off
Published in Suchintya Kumar Sur, A Practical Guide to Construction of Hydropower Facilities, 2019
A quarry is an extractive rock surface where rocks are extracted by blasting or by any other means and broken into the required size for feeding into the crusher to get coarse aggregate of various sizes varying from 80 mm to 10 mm for construction work.
Prevention, Reclamation And Rehabilitation
Published in Earle A. Ripley, E. Robert Redmann, Adèle A. Crowder, Tara C. Ariano, Catherine A. Corrigan, Robert J. Farmer, L. Moira Jackson, Environmental Effects of Mining, 2018
A. Ripley Earle, Robert E. Redmann, Adèle A. Crowder, Tara C. Ariano, Catherine A. Corrigan, Robert J. Farmer, Earle A. Ripley, E. Robert Redmann, Adèle A. Crowder, Tara C. Ariano, Catherine A. Corrigan, Robert J. Farmer, L. Moira Jackson
At that time, Redland’s main operations in Flamborough consisted of the Processing Area, the South Quarry, and the North Quarry. Most of the stone required to feed the crushers and the lime kilns in the processing area was obtained from the North Quarry because mining in the South Quarry was nearing completion. Section 48 of the Aggregates Resources Act, requires all quarry owners in Ontario to perform progressive rehabilitation, and final rehabilitation as reserves are depleted. Quarry owners file site plans with the Ministry of Natural Resources outlining specific details of their mining operations, including methods of rehabilitation. The goal is to rehabilitate the quarry in such a manner that it can be used productively after all mineable reserves are depleted. Quarries can be rehabilitated by allowing them to fill with water, by gently sloping the edges of the quarry with fill or by landfilling. The rehabilitated property may then be used as some form of community recreational area or as a natural area.
Design Philosophy and Methodology
Published in Krystiaim W. Pilarczyk, Dikes Aimd Revetments, 2017
A large number of materials may be used in various forms in the construction of sea walls and dikes. These can be: sand, gravel, quarry rock, industrial waste products (slags, minestone, silex from cement industry), clay, timber, concrete, asphalt, geotextile, etc. All these materials have to meet some structural and environmental specifications which are usually regulated by the national standards. Useful information can be found in various handbooks and guideline reports (TAW/CUR, 1984, 1990, TAW, 1998, CIRIA 1986, PIANC 1987a, CUR/CIRIA, 1991, CUR/RWS, 1995a, b).
Pertinence of alternative fine aggregates for concrete and mortar: a brief review on river sand substitutions
Published in Australian Journal of Civil Engineering, 2022
Branavan Arulmoly, Chaminda Konthesingha
Physical behaviours such as particle shape and surface texture of fine aggregates greatly influence the mechanical and durability properties of concrete and mortar (He et al. 2016). The comparison of physical characteristics of the most used fine aggregate types such as rock-based and sea-based sand types are reported in this section. Rock-based sand includes M Sand/crushed sand and quarry dust where sea-based sand includes offshore sand and sea sand. River sand has round and smooth surface particles that help to make good workable mixes (Kwan 2000; Mia, Salman, and Ahmed 2017; Sun et al. 2020; He et al. 2016). Especially, river sand plays a crucial role in masonry works with its physical characteristics (Sun et al. 2020; He et al. 2016). The cheapest alternative to river sand is M Sand which is produced from high-grade rocks to desired size range and grade through several crushing stages (Manguriu et al. 2013; Jayawardena and Dissanayake 2008; Elavenil and Vijaya 2013). The physical characteristics of rock-based sand types and sea-based sand types can be easily compared with river sand through different methods available. One of the basic sources used to study the above characteristics is the digital images produced through microscopic analysis. Figure 1 manifests the microscopic views of river sand, M Sand, and offshore sand (Nanayakkara 1999). A clear comparison can be made where particle angularity and rougher surface texture are increased in the order of offshore sand < river sand < M Sand.
Laboratory shear bond test for chip-seal under varying environmental and material conditions
Published in International Journal of Pavement Engineering, 2021
Lingyun You, Dongzhao Jin, Zhanping You, Qingli Dai, Xinfeng Xie, Sarah Washko, Samantha Cepeda
The chip-seal makes up of a single layer of asphalt binder that is covered by aggregate (one-stone thick) with its original objective is to seal the fine cracks in the underlying asphalt pavement's surface, and to prevent the water infiltration into the base layer and subgrade of the pavement (Adams et al.2019, Khan et al.2019, You et al.2018b, You et al.2019b). The graded aggregates and one-size aggregates are two primary forms used in the chip-seal. Also, for the aspect of the mineral compositions, according to the Minnesota Department of Transportation (MnDOT) specifications (Wood et al.2006), the fine aggregate in the chip-seal is usually identified as the following three classes Class-1. The aggregate makes up of crushed mine trap or quarry, such as the basalt, diabase, gabbro, and other related igneous rock types, quartzite or granite.Class-2. The aggregate makes up of other crushed mine rock or quarry, for example, the limestone, rhyolite, dolomite, and schist.Class-3. The aggregate makes up of partly crushed or natural gravels from natural gravel deposit. However, almost all of the natural (i.e. rounded and polished) aggregate are forbidden in order to confer proper skid resistance to the pavement surface.
Characterization of natural sand proppant used in hydraulic fracturing fluids
Published in Particulate Science and Technology, 2019
Abderraouf Kamel, Zineb Salem, Rachida Chemini, Mohamed Khodja, Khedidja Allia
As a part of the Northern Sahara, Algeria takes advantage of the abundance of sand in regions that make easier the exploitation and extraction of quartz which is widely used in glass, ceramic, and proppant industries. The composition of Aeolian dune and quarry sand is highly variable, depending on the local rock sources and weather conditions. They are composed mainly of quartz grains SiO2, low quantity of impurities and heavy minerals (Beddiaf, Chihi, and Leghrieb 2015), besides their availability that covers over 80% of the Algerian area, sand turns out to be one of the valuable local resources in fracturing industry. In fact, the fracturing industry is in full swing in the southern regions and because the perspective of the exploitation of the shale gas becomes obvious, it is necessary to make sure that the Algerian sand meets the international standards to valorize it as a proppant agent. Furthermore, this will have a positive economic impact, since it will avoid importing proppant agents synthesized and manufactured abroad.