- منطقة بودونغ الجديدة ، شنغهاي ، الصين .
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The stress–plastic dilatancy relationship was investigated for crushed concrete during drained and undrained triaxial compression tests in the light of the frictional state concept. The slope of the dilatant failure state line is greater than ...
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This paper has studied the characteristics of recycled aggregates retrieved from crushed old concrete obtained from demolished structures, and five different presoaking surface treatment method and silica fume impregnating method to improve the properties of the recycled aggregates and its effect on recycled aggregate …
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This paper discusses an experimental work on concrete made from river and crushed sands such as quartzite, granite, gneiss, marble, dolomite, basalt and limestone with an emphasis on physical, mechanical, and microstructural properties of fresh and hardened concrete.This paper is completed by the formulation of three types of …
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In this research, the fracture characteristics of crushed limestone sand concrete were experimentally investigated through a wedge splitting test, and the results were compared with those of crushed granite sand concrete and river sand concrete. The strength of crushed limestone sand concrete was also investigated.
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Manufactured sand (MS) is widely considered as an alternative of the river sand (RS) recently, and to clarify the influence significance and influence mechanism of MS characteristic parameters on its concrete performance is essential to …
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MECHANICAL CHARACTERISTICS OF NORMAL CONCRETE PARTIALLY REPLACED WITH CRUSHED CLAY BRICKS. ... This study aimed to investigate the suitability of using ground clay brick GCB in concrete. Crushed clay brick originated from demolished masonry was ground in the laboratory and added to cement-based mixtures as partial …
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Construction materials are increasingly judged by their ecological characteristics. Concrete recycling gains importance because it protects natural resources and eliminates the need for disposal by using the readily available concrete as an aggregate source for new concrete or other applications. ... Most of the unprocessed crushed concrete ...
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In this study, implications of various mineral admixtures such as fly ash, silica fume, metakaolin, and Ground Granulated Blast Furnace Slag (GGBFS) for the rheological properties of fresh wet-mix shotcrete incorporating crushed aggregates are quantitatively assessed. Laboratory testing was performed using an IBB rheometer, which is proven to …
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It is typically made up of various materials such as gravel, crushed stone, and recycled concrete. The size of the coarse aggregate can vary, but it is typically between 3/8 inch and 1.5 inches in diameter. ... There are some properties of characteristics of coarse aggregates which influence the properties of the resulting …
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Characteristic Studies on Concrete by Partial Replacement of Fine Aggregate with Waste Granite Powder - written by Molakani Pavan Kumar, Smt. K. Chandrakala published on 2019/10/09 download full article with reference data and citations ... Manufactured sand is the good alternative to river sand and it is purposely made, fine …
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Recycled concrete, or crushed waste concrete, is a feasible source of aggregates and an economic reality, especially where good aggregates are scarce. Conven-tional stone crushing equipment can be used, and new ... Aggregates for Concrete. Table 5.2. Characteristics and Tests of Aggregate.
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Crushed concrete offers cost-effective and eco-friendly benefits for driveways. By repurposing recycled materials, it reduces expenses compared to fresh concrete or natural stone. This choice not only saves money but also contributes to sustainability by minimizing landfill usage. …
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A few studies have demonstrated that waste glass that is pulverized and screened is a solid, protected and conservative distinct option for sand utilized as a part of cement. When crushed glasses are used in concrete works mainly two advantageous are there; first, it will be environment amicable, second, it will use waste setup of valuable and ...
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The main objective of this research is to investigate experimentally the effect of crushed and uncrushed coarse aggregate on the properties of hardened concrete (compressive strength) by adopting the American Concrete Institute (ACI) and the British Department of Environment (DoE) methods. Concrete mixes were designed, concrete …
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This research explores the use of Crushed Brick Aggregate (CBA), obtained as a replacement for Natural Coarse Aggregate (NCA) in concrete. Laboratory tests of concrete underwent compressive and tensile strength tests, while the aggregate underwent sieve analysis, impact, abrasion, and water absorption tests.
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These characteristics favorably affect the microstructure of concrete and result in greater concrete strength [6], [7], [8]. Several researchers have recently reported the use of crushed sand in making concrete, including a combination of crushed sand and river sand, to enhance the strength of concrete containing them [9], [10], [11], [12].
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Through indoor large-scale direct shear tests, the interface characteristics of the crushed rock cushions layer reinforced with ParaLink geogrid were studied. The test results indicate that the shear strength of the crushed rock aggregate and the interface strength parameters have a non-linear relationship with the normal stress. The addition …
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