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Lightweight concrete can be produced by the use of lightweight aggregates. Considering expanded perlite has low density, it is a suitable aggregate for lightweight concrete [7,8]. Moreover, expanded perlite can produce water for the hydration of cement due to its high water absorption properties.
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The review by Tajra et al. (2019) demonstrated the ability of a cold bonded aggregate to produce concrete with compressive strengths between 7 and 70 MPa, a modulus of elasticity from 6 to 61.75 GPa, and density ranging from 1115 to 2345 kg/m 3. The authors also concluded that this supports the feasibility of using cold-bonded aggregate for ...
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The use of waste clay generated by major infrastructure development projects to make lightweight aggregate has a positive environmental impact and contributes towards a more circular economy. This paper reviews the manufacturing process used to produce lightweight aggregates from clay and the influence of processing …
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Lightweight aggregate is a type of coarse aggregate that is used in the production of lightweight concrete products such as concrete block, structural concrete, and pavement. The Standard Industrial Classification (SIC) code for lightweight aggregate manufacturing is 3295; there currently is no Source Classification Code (SCC) for the industry.
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The burned ash powder was sieved in order to remove coarser material and replacement of cement was done by 5%, 10%, 15%, 20%, 25%, 30%, and 35% with corncob ash. For each replacement, including ...
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To produce lightweight aggregate, the raw material (excluding pumice) is expanded to about twice the original volume of the raw material. The expanded material has properties similar to natural aggregate, but is less dense and therefore yields a lighter concrete product. The production of lightweight aggregate:
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This paper reviews the manufacturing process used to produce lightweight aggregates from clay and the influence of processing conditions on properties. ... Lightweight aggregates for concrete, mortar and grout. ISBN: 0 580 39776 9, 2002. Google Scholar [31] C.R. Cheeseman, G.S. Virdi. Properties and microstructure of …
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The aim of this study was to present the problem of durability of structural lightweight concrete made of a sintered fly ash aggregate. The issue of durability was researched for 12 concrete series in terms of their water absorption, water permeability, and freeze-thaw resistance. Additionally, the microstructure of several concretes was …
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Different structural lightweight concrete mixtures of specific density and strength classes were produced by using various lightweight aggregates (LWAs) such as pumice, perlite, and rice husk ash. Their properties were evaluated in fresh and hardened states with regards to compressive strength and durability parameters such as water …
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During the 1920s, several bridges were built using expanded slate as aggregate in lightweight concrete. Fifty years later, more than 200 lightweight concrete bridges have been constructed in the United States and Canada [5]. In the middle of the 20th century, the use of lightweight concrete in structural engineering intensified.
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This article presents the physical and mechanical properties of geopolymer concrete with lightweight artificial aggregate. A research experiment where the influence of fly ash–slag mix (FA-S), as part of a pozzolanic additive, on the properties of geopolymers was carried out and the most favorable molar concentration of sodium hydroxide solution …
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Lightweight concrete aggregates specified by ASTM C330, Standard Specification for Lightweight Aggregates for Structural Concrete, include rotary kiln expanded shales, clays and slates, pelletized or extruded fly ash, and expanded slags along with natural …
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Expanded shale lightweight aggregates, as the coarse aggregates, were used to produce lightweight aggregate concrete (LWAC) in this research. At the fixed water-cement ratio, paste quantity, and aggregate volume, the effects of various aggregate gradations on the engineering properties of LWAC were investigated. Comparisons to …
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The lightweight aggregate materials were prepared by mixing WTS with 7.5%, 15.0%, or 22.5% of industrial sludge as a secondary ingredient. The chemical composition analyses revealed that the ternary phase diagrams of the chemical components were within the range recommended by C.M.
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... LECA may make lightweight blocks, concrete, partition panels, thermal insulating tiles, and thermally roofing plaster. Abbas [3] investigated the production of expanded clay aggregate and...
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Decreasing the demand for natural aggregates is doubly justified by the significant contribution of the construction industry to the unsustainable development path of the natural environment, and the projected global increase of the consumption of construction aggregates. Extensive research has been carried out on the physical and …
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The need for high-strength lightweight concrete for cost-effective and energy-efficient building construction drives the need to develop high-strength lightweight aggregates. In this study, a novel high-strength lightweight core–shell aggregate (HLCSA) was developed and compared with commercial available artificial lightweight …
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lightweight aggregate for use in lightweight masonry blocks and lightweight concrete. The spray dryer ash produced from this unit currently undergoes disposal at an off-site landfill. The environmental analysis of the proposed action found that the most notable impacts would be an increase in truck traffic and diversion of the waste stream
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The density of MEPS is much less than that of natural aggregate; MEPS concrete becomes a lightweight concrete with a density of about 900–1700 kg/m 3. The 28-d compressive strengths of MEPS concrete range from 12.58 MPa to 23.34 MPa, which satisfies the strength requirement of semi-structural lightweight concrete.
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Nowadays, lightweight aggregate concrete is becoming more popular due to its versatile properties. It mainly helps to reduce the dead loads of the structure, which ultimately reduces design load …
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LECA with a particle density between 0.8 and 2.0 g/cm 3, or a bulk density less than 1.20 g/cm 3 has been used for making lightweight concrete, lightweight bricks and blocks, precast components as well as structural backfill against foundation (Rashad, 2018). Lytag is also produced by pyro-processing, but it is demonstrating a downward ...
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The effect of the quantity of expanded clay aggregate on the fresh, hardened, and durability qualities of concrete is also studied. Expanded clay aggregates improve workability, fire resistance ...
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Abstract and Figures. Lightweight aggregate concrete manufactured by solid waste or recycled by-products is a burgeoning topic in construction and building materials. It has significant merits in ...
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Processing Lightweight Aggregate to produce Lightweight Concrete November 2022 Authors: Nadia Ismael Technical College of Mosul Abstract The modern …
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Expanded clay aggregates improve workability, fire resistance, sound insulation, and thermal insulation in concrete. Its inclusion, on the other hand, diminishes concrete's density, strength, elastic modulus, and resistance to freeze-thaw action. Article received: 13/4/2022. Article accepted: 11/6/2022.
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Lightweight concrete can produce in three different methods those are concrete, lightweight aggregate concrete, and no fine concrete [2]. Replacing LECA aggregate with coarse aggregate decreases the self-weight of the concrete and results in. decreasing the self-weight of building [1]. OBJECTIVES. To reduce the self …
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From the work results, it can be concluded that the coarse lightweight aggregate of porcelanite, pumice and composite aggregates can be used instead of natural aggregate (gravel) to make structural lightweight concrete with densities of less than 2000 kg/m 3 and this less than the corresponding natural aggregates concrete by the range of (25% ...
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open access Highlights • Recycled concrete fines from different sources could be recycled and used in lightweight aggregate production. • Engineering …
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Low strength lightweight concrete specimen and kg/m3 kg/m3 strength, MPa aggregates LA LA 321.1 600.0 0.81 A1 360.5 588.5 1.36 Physical and mechanical properties of the lightweight A2 362.2 594.2 1.49 concrete specimens Density and water absorption of lightweight concrete LB has lower bulk density (620 kg/m3) comparing to specimens …
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