Recently, expanded shale aggregates of the kind used to produce lightweight concrete have been used as a substitute for ordinary fill materials in geotechnical applications where the combination of low unit weight and substantial shear strength is important.
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Five different types of LWAs (i.e. Y1, Y2, S1, S2, and S3.) made from expanded shale ceramist with different geometries were selected to make LWAC (Fig. 1).The physical properties of the selected LWAs determined by relevant Chinese standard GB/T 17431.2-2010 are presented in Table 1.Y1 and Y2 featured a quasi-spherical …
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In practice, in the early 20th century, the tendency of certain clays and shales to expand when exposed to high temperatures have been discovered and was firstly patented by Stephen J. Hayde under the name "Haydite." 2 One of the initial uses for this was to produce expanded shale for the construction of a 7500-ton tanker named USS …
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Chapter 1 Overview and History of the Expanded Shale, Clay and Slate Industry 1.1 Introduction 1.2 How it started 1.3 Beginnings of the Expanded Shale, Clay and Slate (ESCS) Industry 1.4 What is Rotary Kiln Produced ESCS Lightweight Aggregate? 1.5 What is Lightweight Concrete? 1.6 Marine Structures The Story of the Selma Powell …
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A total of 16 mixes using expanded lightweight clay aggregate was designed with limestone powder, which was divided into three groups such as Group-1 (lime and silica fume), Group-2 (cement and water-reducing admixture), and Group-3 (expanded clay and glass aggregate). ... (2016) Mix design and properties of lightweight self …
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What is Expanded Shale? Expanded Shale is a lightweight aggregate that is an ideal growing media for hydroponic or aquaponic systems. The shale is mined, crushed and fired under high temperatures in a rotary kiln, producing a clean, inert, porous, and light material. ... The aggregate is also used as an additive in clay soils to increase its ...
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Norlite is a ceramic material produced by expanding and vitrifying select shale in a rotary kiln. It is a lightweight, insulating, fire-resistant, and chemically inert aggregate that can be used in concrete, masonry, soils, …
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Committed to manufacturing the finest quality, high strength, low absorption lightweight aggregate in the world. As a part of this commitment to quality, we procure the highest grade raw material, utilize current testing and …
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Expanded shale, expanded clay and expanded slate (ESCS) lightweight aggregate is prepared by expanding select minerals in a rotary kiln at …
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Using lightweight aggregate made from expanded shale, clay or slate (ESCS) is a simple, economical and sustainable way to help concrete reach its maximum potential.
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to produce expanded shale, clay, and slate. LWAs are manu-factured by heating small particles of shale, clay, or slate in a rotary kiln. A particle size was discovered that, with limited crushing, produced an aggregate grading suitable for making lightweight concrete (Expanded Shale, Clay and Slate Insti-tute 1971).
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Buildex expanded shale lightweight aggregate is our only product, allowing us to concentrate on quality, consistency, service and economy while serving a market area of 15 Midwestern and Rocky Mountain states. 832 Pennsylvania, Lawrence, KS 66044 - Office 22105 MO-371, Dearborn, MO 64439 – Plant
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The compressibility and shear strength characteristics of the lightweight aggregate are compared with those of normal-weight aggregate using the same experimental setup. Results of the direct shear tests performed to determine the angle of friction between the geotextile and lightweight aggregate are also presented.
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Insulation materials for the building sector: A review and comparative analysis. S. Schiavoni, ... F. Asdrubali, in Renewable and Sustainable Energy Reviews, 2016 3.1.12 Lightweight expanded clay aggregate (LECA). LECA [80,98,112–114] is a cellular material produced exploiting the clay expansion processes at high temperatures. …
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trade association for manufacturers of rotary kiln-produced expanded shale, expanded clay and expanded slate lightweight aggregates. The Institute promotes the use of these products for structural lightweight concrete, lightweight concrete masonry, asphalt, geotechnical, horticulture and other markets. Their product research
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Abstract. In recent years lightweight aggregates are being used increasingly in geotechnical applications. This paper presents results of large-size one-dimensional compression and direct shear tests performed on lightweight aggregate. The compressibility and shear strength characteristics of the lightweight aggregate are …
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Geotechnical Lightweight Fill. The Use of Expanded Shale, Clay and Slate Lightweight Aggregates in Granular Geotechnical Fills (January 2017) Lightweight aggregate fills are approximately half the weight of common fills. This advantage, coupled with its predictable high internal friction angle, can also reduce lateral forces by more than one-half.
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As a geotechnical fill, lightweight aggregates, such as expanded shale, clay and slate (ESCS), can aid in soil stabilization, subgrade improvements, thermal insulation, bridge abutment design and other geotechnical engineering challenges. The material has half the unit weight of conventional aggregates and a predictably high …
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The ceramic-like ESCS lightweight aggregate is made by expanding selected raw shale, clay or slate minerals in a rotary kiln at temperatures over 2000°F. The expansion or bloating process makes the finished ESSC aggregate structurally strong, durable, inert and lightweight. ... Expanded Shale, Clay and Slate Institute. 35 East …
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The Expanded Shale, Clay and Slate Industry is committed to the efficient production and long-term performance of expanded shale, clay and slate (ESCS) lightweight aggregate. The industry and its related association, the Expanded Shale, Clay and Slate Institute (ESCSI), are also committed to the sustainable development of the entire building ...
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Mehdi Torabi-Kaveh, Mohammadreza Moshrefyfar, Jafar Zarezadeh, Seyed Mohammad Ali Moosavizadeh; Evaluation of applicability of expanded shale to produce lightweight aggregate as a replacement for commercial LECA in constructions.
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ESCS Lightweight Aggregate April 2007 Expanded Shale, Clay & Slate Institute (ESCSI) 2225 E. Murray Holladay Rd, Suite 102 Salt Lake City, Utah 84117 (801) 272-7070 Fax: (801) 272-3377 info@escsi . 2-2 ... Of Expanded Shale, Clay and Slate . 2-4 2.1 Geology
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Lightweight aggregates from the treatment of natural aggregates: The clay or shale is heated in a kiln at a high temperature, which causes the material to expand to make it lightweight. Expanded …
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Buildex expanded shale lightweight aggregate is our only product, allowing us to concentrate on quality, consistency, service and economy while serving a market area of 15 Midwestern and Rocky Mountain states. 832 Pennsylvania, Lawrence, KS 66044 - Office 22105 MO-371, Dearborn, MO 64439 – Plant
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Natural lightweight aggregates, made from volcanic rocks, can be used after crushing and sieving. Their density ranges from 500 to 900 kg/m3 [26]. Examples include pumice, diatomite, scoria, and volcanic cinders. Artificial lightweight aggregates include expanded perlite, ed slag, expanded shale, and slate [18].
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The physical properties other than unit weight that make lightweight aggregate fill suitable for use in geotechnical applications are: • High internal angle of friction • Low soundness loss ... R.D., and T.A. Holm; Expanded Shale Lightweight Fill: Geotechnical Properties, Journal of Geotechnical Engineering, ASCE, Vol. 111, No. 8, Aug ...
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What is Expanded Shale, Clay and Slate (ESCS)? It is a unique, ceramic lightweight aggregate prepared by expanding select shale, clay or slate in a rotary kiln at …
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Nominal sizes of 4.75 and 12 mm lightweight expanded shale were used as fine and coarse aggregates, respectively. Expanded shale produced by TXI aggregate company, Colorado, USA, was used. In manufacturing process, nat-ural shale is expanded in an oil fired rotary kiln maintained between 1,900 and 1,200 C. At this temperature, the shale
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Arcosa Lightweight produces rotary kiln expanded shale and clay lightweight aggregate for various applications. Find their locations and products in Texas, California, Colorado, …
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Structural lightweight concrete (SLC) made from expanded shale, clay or slate (ESCS) aggregate not only provides several benefits to make foundations more durable, but it also alleviates concerns ...
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