The investigation results suggested that the cold-bonded fly-ash lightweight aggregate using slag showed a highest crushing strength of 22.81 MPa and also exhibited lower water absorption of 13.01%. The influence of binary blends of flyash and a binder was observed to be an important parameter for achieving a high strength aggregate.
Aggregates are sand, gravel and crushed stone. Other materials like slag and recycled concrete can be considered aggregates as well. Aggregates can be put ... There are four general types of light-weight aggregates. • Natural lightweight aggregate prepared by crushing and sizing with screens, including pumice, scoria, tuff, breccia and ...
Cold bonded lightweight aggregate (LWA) was produced by adding 0%, 25% and 50% granulated blast furnace slag (GGBS) or rice husk ash (RHA) to fly ash (FA) by the pelletization process with cement ...
With both these methods, crushing of the expanded slag is required. Although some of the expanded slag finds use in structural lightweight concrete, most of it is used in the manufacture of concrete block ... It has been used both as lightweight aggregate and in slag cement manufacture when suitably vitrified.
Slag aggregate sample was collected from the crushing plant of steel slag of a local steel manufacturing company. It was found that some slag aggregates were light in weight with a lot of voids and some were ... the slag aggregates were separated into three types, such as lightweight slag aggregate (SL), heavyweight slag aggregate (SH), and ...
The production method of geopolymer lightweight aggregates (GLAs) is explored in this study through crushing technique, which has a good prospect for massive industrial production. Geopolymer cubes with the dimension of 100 mm × 100 mm × 100 mm were firstly produced using one-part geopolymer technology and then crushed into coarse …
In this paper, mechanical properties and durability of 14-year lightweight concrete containing ceramic industrial waste based lightweight aggregate (CLWA) and furnace slag based lightweight aggregate (FLWA) are experimentally studied.
This study aims to prepare and assess the durability and mechanical characteristics of fly ash (FA) and ground-granulated blast furnace slag (GGBS)-based lightweight geopolymer concrete (LWGC). Utilizing sintered fly ash aggregate (SFA) in GPC is one such approach that can lower the usage of regular cement and natural …
Lightweight aggregates have been manufactured by sintering fly ash and crushing the product into suitable sizes. These aggregates possess unique characteristics that make them suitable for high strength and high performance concrete.
It is estimated that 0.45–0.50 tonnes of slag will be generated from each tonne of steel production. ... The aggregate crushing value indicates the resistance to crushing under a gradually applied compressive load. ... Schollbach K, Wang J, De Belie N (2020) Properties of alkali activated lightweight aggregate generated from Sidoarjo …
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.
The investigation results suggested that the cold-bonded fly ash lightweight aggregate using slag showed a highest crushing strength of 22.81 MPa and also exhibited a lower water absorption of 13.01%.
The present research investigates the effects of artificial lightweight aggregate (ALWA) and polyvinyl alcohol (PVA) fiber utilization on the mechanical performance of slag-based lightweight geopolymer mortar (LGPM) specimens cured at ambient temperature.
In this study, lightweight aggregates (LWAs) were manufactured through cold-bonding pelletization of ground granulated blast furnace slag (G) and two types of fly ash with different...
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 mitigating the negative impact on the environment during the manufacturing of ...
A wide range of concrete samples were prepared with varying water-cement ratio and density. The variation of density was achieved by using lightweight recycled coarse aggregate, and high density nickel slag aggregate as fine aggregate. The influences of water-cement ratio and density on the compressive strength were evaluated.
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 …
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 …
• It is possible to upcycle alkali activated slag waste to reduce landll space and contribute circular economy. • Produced aggregates can be used for example as an aggregate in lightweight concrete produce new green building materials. Keywords Articial aggregate, Recycled concrete nes, Concrete powder, Granulation, Alkali activation, Recycling
Effect of water quenched silicomanganese slag as fine aggregate on mechanical properties and microstructure characteristics of solid waste-based mortar and concrete ... This porous and lightweight aggregate reduced workability due to its high absorption of water ... which was consistent with its high crushing value in the …
Lightweight expanded clay aggregate (LECA) is a lightweight granular material, which can be used as an ideal backfilling geomaterial attributed to its porous particles. Through X-ray tomography images, it is found that LECA particle is a porous composite particle with a strong shell and a fragile core, originating from the sintering process of LECA …
Artificial (lightweight) aggregate could be produced trough different routes: -mechanical processing: crushing /sieving /sorting (for example slag, glass, construction and demolition waste-CDW ...
• Development of 131.8 N crushing force was achieved using optimal particle size of the raw material. • It is possible to upcycle alkali activated slag waste to reduce landfill space and contribute circular economy. • Produced aggregates can be used for example as an aggregate in lightweight concrete produce new green building …
When crushed and sized properly, slag can be sold and used as valuable material in many different ways, for example, as aggregates. However, since slag usually contains uncrushable objects, it is typically …
The light weight of steel slag concrete is also an important factor hindering its engineering application. ... When the carbonation temperature increases to 55 °C, the crushing value of the steel slag aggregate cured for 72 h decreases to 23%, which is less than 25%, and reaches the standard requirement for Grade II coarse aggregate. ...
At the same crushing force, the density of concrete made from this type of aggregate can be up to 35% lower than that of regular concrete. ... Concrete with a light weight: The subject of this study is the durability of lightweight concrete in marine applications like pontoons, piers, and bridges. ... Blast Furnace Slag Aggregate …
Semantic Scholar extracted view of "Development of artificial one-part geopolymer lightweight aggregates by crushing technique" by Ling-Yu Xu et al.
The hardened aggregates were tested for specific gravity, water absorption, and crushing strength. Thereafter, lightweight concretes (LWCs) were produced with water to cement ratio of 0.50 and a ...
Artificial aggregates, such as fly ash lightweight aggregates, can be used as eco-friendly alternatives to natural aggregates. This work aims to investigate the effect of curing time on the hydration and material properties (voids, shrinkage, crushing strength and pH) of cold-bonded high-calcium fly ash–Portland cement lightweight aggregate. …
In this study, lightweight aggregates (LWAs) were manufactured through cold-bonding pelletization of ground granulated blast furnace slag (G) and two types of …