A potential remedy for this issue is the partial or complete replacement of natural aggregate with lightweight aggregate, such as light expanded clay aggregate (LECA), to …
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Influence of content and maximum size of light expanded clay aggregate on the fresh, strength, and durability properties of self-compacting lightweight concrete reinforced with micro steel fibers. Constr. Build. Mater., 233 (2020), Article 117922, 10.1016/j.conbuildmat.2019.117922.
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Lightweight expanded clay aggregate (LECA) is among the common lightweight materials that have been applied successfully in civil engineering works. Many studies have been conducted …
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Expanded clay lightweight round coarse aggregate and crushed fine aggregate: 785 mm to 805 mm: 12 sec to 14 sec-0.93 to 0.97--[41] Light expanded clay aggregates: 622 mm to 742 mm: 3.15 sec to 5.5 sec: 552 mm to 592 mm--12 mm to 36 mm [135] Fly ash aggregates and Light expanded clay aggregates: 680 mm to 710 mm: 7.8 sec to 9.7 sec: 5.9 mm to 6. ...
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Expanded clay pellets (Fig. 8.11), most commonly known under the brand names LECA (acronym of light expanded clay aggregate) or LIAPOR (porous lias clay), also known as Hydroton and under the non-proprietary terms fired clay pebble, grow rocks, expanded clay (pellets) or hydrocorns, are small globes of burnt and expanded clay, used in construction and farming, …
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Light expanded clay aggregate. Fly ash aggregate. Self curing. Durability. 1. Introduction. Self-compacting concrete (SCC) has been invented by Japan in the 1988 to increase the uniformity and durability behaviour of concrete. SCC is a concrete that do not need vibration for its compaction after placing. Since the concrete can get compaction by ...
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This study examines LWAC made up of lightweight expanded clay aggregate (LECA). They are an artificial type of lightweight aggregate manufactured by heating clay up to 1300 °C in rotary kilns. Concrete produced …
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In addition to the lightened aggregates produced, a typical lightweight aggregate of the expanded clay type and a dark clay slate used in horticulture were also tested for …
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Expanded clay (LECA) and other light weight aggregates such as: expanded shale, pumice, slate, perlite, bottom ash etc. have been successfully used in the production of lightweight concretes (LWCs) over the decades [1,2and 3]. Use of those aggregates has property to the sustainable development by protective energy, increasing structural
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Influence of Presaturated Light expanded clay and Fly ash aggregate in Self compacting concrete. Romanian Journal of Materials, 49 (3) (2019), pp. 370-378. View in Scopus Google Scholar [19] IS: 516-1959, Methods of test for strength of concrete, Bureau of Indian Standards, New Delhi, India.
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Lightweight expanded clay aggregate (LECA) is a manufactured aggregate with many uses in construction, such as aggregate for the lightweight concrete or like geotechnical fill. ... Influence of content and maximum size of light expanded clay aggregate on the fresh, strength, and durability properties of self-compacting lightweight concrete ...
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The nanostructured catalysts were immobilized on light expanded clay aggregate (LECA) granules in order to investigate the effect of a novel support on the activity of the catalysts. Morphological changes are recognizable in the SEM images. Activity tests indicated that the best catalytic performance was assigned to Cu/TiO2/LECA. After 120 min ...
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LECA (Light Expanded Clay Aggregate) is rounded and light grains of expanded clay which is produced in rotary kiln at temperatures about 1200 °C. LECA aggregate almost have a rough and microscopic porous surface. LECA surface and inner parts which are brown and black respectively can be seen in Fig. 1.
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Portland cement, fine aggregate (sand), light expanded clay aggregate (LECA) as a full replacement for the coarse aggregate, silica fume, superplasticizer. Cement Portland cement was utilized in the current study. Tables 1 and 2 show the chemical and physical properties of Portland cement, respectively. The properties of cement meet
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The effects of maximum size of aggregate (d max), light expanded clay coarse aggregate (LECA) content, and volume fraction of micro steel fibers (V f) on the properties of self-compacting lightweight concrete (SCLWC) were investigated.A total of 18 mixes with d max of 10, 14, and 20 mm, LECA contents of 50% and , and V f of 0.25, 0.5, and 0.75% were …
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Structural Lightweight Expanded Clay Aggregates (LECA) were used in the mixture of Structural Lightweight Concrete (LWC) as a substitute for coarse aggregates. Along with LECA, CNTs as a partial replacement for cement with varied weight ratios were added to the lightweight concrete (0.02, 0.1, and 0.3 percent of cement weight).
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Light expanded clay aggregates (LECA) have been increasingly used as substrate material for constructed wetlands given their phosphate removal capacity, mechanical …
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Expanded clay aggregate (ECA) is also an artificial aggregate made by bloating clay, shale, or slate at temperatures ranging from 900 to 1,250°C [4]. It was patented as …
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Expanded clay (LECA) is a ceramic material created by expanding and vitrifying select clay in a rotary kiln. The utilization of expanded clay aggregate with other quality supplementary …
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Light expanded clay aggregates (LECA) have been increasingly used as substrate material for constructed wetlands given their phosphate removal capacity, mechanical strength, hydraulic conductivity and their plant rooting and biofilm growth supporting structure. This review summarizes the current literature on LECA-based constructed wetlands.
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Influence of content and maximum size of light expanded clay aggregate on the fresh, strength, and durability properties of self-compacting lightweight concrete reinforced with micro steel fibers. Construction and Building Materials, Volume 233, 2020, Article 117922.
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Dye-contaminated wastewaters from the batik industry are hazardous if discharged into the environment without any treatment. Finding an optimization and reusability assessment of a new fungal-material composite for dye-contaminated wastewater treatment is important for efficiency. The study purposes to optimize fungal mycelia Trametes hirsuta EDN …
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Biodegradation and metabolic pathways of three anthraquinone dyes, Reactive Blue 4 (RB4), Remazol Brilliant Blue − R (RBBR), and Acid Blue 129 (AB129) by Trametes hirsuta D7 fungus immobilized in light expanded clay aggregate (LECA) were investigated. Morphological characteristics observed with scanning electron microscope (SEM) showed successful …
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Heiza et al. [15] studied the effect of lightweight aggregate expanded clay (LECA) on the selfcompacting concrete slab and it has been found the LWSCC with low density can be produced using ...
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Light expanded clay aggregates (LECA) have been increasingly used as substrate material for constructed wetlands given their phosphate removal capacity, mechanical strength, hydraulic conductivity ...
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Comparative Study on Light Weight Concrete by using Light Expanded Clay Aggregate and Pumice Stone. K. VarshaSri 1, G. Vishnu Vardhan 2 *, K. Swathi 3, D. Prasanna 4, R. Chandini 5, G. Poojith 6 and R. Ramana Nayak 7. 1 Assistant Professor, Dept. of Civil Engineering, Annamacharya Institute of Technology and Sciences, Tirupati, Andhra Pradesh ...
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Thermal ash aggregate decreased the density of geopolymer concrete up to 1850 kg/m³ and improved the strength up to 24.50 N/mm², on the other side using lightweight expanded clay aggregate, the ...
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LWC made with Light Expanded Clay Aggregate (LECA) have demonstrated lesser compressive strength at earlier age. Nevertheless target strength was achieved at the age of 28 days because of sufficient moisture content migration by LECA aggregate that satisfies the hydration process [34], [35].
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Nahhab AH, Ketab AK (2020) Influence of content and maximum size of light expanded clay aggregate on the fresh, strength, and durability properties of self-compacting lightweight concrete reinforced with micro steel fibers. Constr Build Mater 233:117922. Article Google Scholar ...
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Natural aggregates were used for testing procedures in this study, which were retained on a 10 mm sieve and met the standards of IS 383:1970 [28]. The testing approach in this study uses light weight expanded clay aggregate (LECA) of sizes 2–10 mm that meet the specifications of IS 383:1970 [28]. Water is a crucial component for concrete and ...
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Constructed wetlands (CWs) are receiving a renewed attention as a viable phytotechnology for treating agricultural wastewaters and for the removal of more specific pollutants, in particular recalcitrant ones. In this work, the performance of CW mesocosms using light expanded clay aggregates (LECA) as the bed's substrate and planted with Phragmites …
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USING LIGHTWEIGHT EXPANDED CLAY AGGREGATE (LECA) AND EXPANDED PERLITE AGGREGATE (EPA) MUHAMMAD LUTFI BIN OTHMAN1,*, ALI IBRAHIM MOHAMMAD ... 760 to 1100 °C so that it expands 4 to 20 times its original volume and forms a light cellular material with grain size products of less than 0.08 mm, 4.75 mm or 10 mm. ...
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The lightweight sustainable construction composites prepared with the waste materials are enormously utilized for the construction activities. The geopolymer concrete (GPC) has emerged as the sustainable construction composite and holds potential to get modified as the lightweight composite. To confirm the sustainability attributes and feasibility of the lightweight …
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Lightweight self-compacting concrete with light expanded clay aggregate (LECA) MATEC Web of Conferences 162, 02031 (2018) Effect of GGBS and curing temperature on microstructure characteristics of lightweight geopolymer concrete MATEC Web of …
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