Most lightweight aggregate is produced from materials such as clay, shale, or slate. Blast furnace slag, natural pumice, vermiculite, and perlite can be used as substitutes, however. 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, …
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Industry leaders trust our superior aggregates for their most demanding projects. Our comprehensive range of crushed rock, stone, sand and gravel meets …
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2025529· This study develops lightweight concrete using fly ash and epoxy resin-based polymer aggregates, achieving up to 15.36% weight reduction, improved flexural strength, and enhanced durability in acidic...
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The tested lightweight sintered aggregate is an ideal alternative for agloporite aggregate, granulated slag or pumice-stone slag, as one of the main components of lightweight structural and pervious concretes.
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91· In order to further reduce the carbonation curing time and mechanical performance of steel slag-based artificial aggregates, they employed EDTA as an additive to improve the carbonation efficiency. After only 4 h of carbonation, the carbonated steel slag-based artificial aggregates obtained a crushing values of 7.99–8.80% [24].
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When necessary, combine fine aggregate with natural aggregate, iron blast furnace slag, reverberatory furnace slag, or crushed concrete to produce Michigan Class 21AA, 21A, 22A, and 23A dense-graded aggregates in accordance with Table 902-1, Table 902-2, and this subsection.
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322· Cold bonded aggregate (CBA) produced principally with concrete slurry waste (CSW) and municipal solid waste incinerator bottom ash (MSWIBA) was used to produce lightweight concretes products – precast masonry units (LWCMU). The properties of the concrete products prepared with the 100% coarse CBA and different fractions of mixed fine CBA and …
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1.5.1.6 Slag Slag aggregates are obtained by crushing of smelter slag or by special treatment of fire-liquid slag melt (molten slag aggregates). Currently there are many types of concrete that are developed and used in construction that include metallurgical slags both as a binding component and as fillers. Slag, generally classed as a synthetic aggregate (also called artificial …
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11· Developing geopolymer lightweight aggregates (GLAs) is explored in this study through crushing technique, which has a good prospect for massive industrial production.
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2024730· This study recommends that additional physical and mechanical characteristics of the PET aggregates such as durability of aggregate, permeability of aggregate, aggregate crushing strength, elastic modulus and Weibull modulus of aggregate could be determined.
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111· In this study, a novel bio-based cold-bonded lightweight aggregates (BCBLWAs) was developed with the use of converter steel slag and miscanthus powder via CO 2 curing. The aggregates using steel slag as a binder show relatively …
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2024121· The majority of artificial aggregates are lightweight aggregates, with individual crushing strengths of less than 10 MPa. Aggregates used in sintering processes generally exhibit minimal water absorption and possess more strength up to 8 MPa.
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810· Further work focusing on the utilization of core-shell structured lightweight aggregate for the production of lightweight aggregate concrete, aiming to demonstrate the practical applications of the aggregate produced, has already been planned and initiated.
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CHAPTER 1—INTRODUCTION Hydraulic cement concrete is a cement and water paste in which aggregate particles are embedded. Aggregate is granular material such as sand, gravel, crushed stone, blast-furnace slag, and lightweight aggregates that usually occupies approxi-mately 60 to 75% of the volume of concrete.
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Journal of Engineering and Applied Sciences is an online peer-reviewed research journal aiming at promoting and publishing original high quality research in all disciplines of Engineering Sciences and Technology
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1.5.1.6 Slag Slag aggregates are obtained by crushing of smelter slag or by special treatment of fire-liquid slag melt (molten slag aggregates). Currently there are many types of concrete that …
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83· The results showed that the ladle slag content of 30% cured in a humidity chamber produced the strongest granules, with a crushing strength of 127 N, which was 135% greater than a commercial lightweight aggregate. The granules generally had satisfactory density and water absorption with a higher ladle slag content.
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2024715· The application of lightweight aggregates (LWA) in concrete is aimed mainly at the reduction of weight, improvements of durability, or better thermal …
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3) Byproduct Lightweight Aggregates-prepared by crushing and sizing ed and granulated slag, cinders, and coke breeze. With the exception of processed slag, this group is becoming …
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201687· After collection of steel slag aggregate from a local steel manufacturing company, the steel slag aggregate was separated into lightweight (SL), heavyweight (SH), and mixed (SM) slag aggregates.
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• By-product lightweight aggregates prepared by crushing, then sized by screens using granulated slag, organic cinders and coke from steel mill waste. • …
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111· The waste materials were mixed with Portland cement at 20–50 percent by weight to make artificial lightweight aggregates. To investigate the impacts of temperature on the physical properties, such as crushing strength, density, and water absorption, the pellets were sintered at 300, 600, and 900 °C for an hour.
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Steel aggregates have a high abrasion and crushing resistance for road applications: air cooled blast furnace products bond particularly well to cement and bitumous binders. They also offer significant environmental benefits such as the reuse or recycling of material and the avoidance of the need to quarry natural aggregates.
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2025423· Construction aggregate forms the backbone of every building project you see around you. These granular materials – including sand, …
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Artificial aggregates are sometimes produced for special purposes: for making lightweight concrete: burned clays, artificial cinders, ed slag, expanded shales and slate, sintered fly ash exfoliated vermiculite are use d for making heavy- weight concrete: steel rivet punchings and iron ore (Magentite) have been used.
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83· In this study, recycled concrete fines were granulated and used as lightweight aggregates. Ladle slag, a steel industry residue, was used as a …
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The lightweight aggregate can be categorized as natural and artificial aggregates such as pumice, scoria, and those of volcanic origin, expanded blast-furnace slag, vermiculite, and clinker aggregates [3].
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Furthermore, the microstructure investigation showed that no wall effect occurred in the ITZ of the AAC. The ITZ structure of the hardened AAC was also more compact and uniform than that of the OPC concrete. Keywords: lightweight aggregate; ambient curing; water–solid ratio; fly ash–slag alkali-activated concrete; mechanical properties
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201311· Crushing strength of lightweight aggregates depends on the efficiency of production, type of binder used and size of the aggregate formed. Fly ash based slag pellets were produced in the present
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Structural lightweight aggregate-Structural aggregate meeting the requirements of ASTM C 330 with bulk density less than 70 lb/ft3 (1120 kg/m3) for fine aggregate and less than 55 lb/ft3 (880 kg/m3) for coarse aggregate. This includes aggregates prepared by expanding, pelletizing, or sintering products such as blast-furnace slag, clay, fly ash, shale, or slate, and aggregates …
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