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 …
The expanded slag ball is a porous lightweight slag formed by cooling the slag with high cooling water. The production methods include spray method, trench method and roller method. It can be used to make lightweight aggregate, inner wall panels, floors, etc. it can also be used in load-bearing structures.
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 influence of lightweight expanded clay and shale aggregates on the mechanical performances of concrete is studied through their volume fractions and aggregate qualities.
Semantic Scholar extracted view of "Development of artificial one-part geopolymer lightweight aggregates by crushing technique" by Ling-Yu Xu et al.
The large-scale consumption in ordinary concrete was difficult, so under the fact that lightweight aggregate concrete was one of the largest and widest special concretes, considering the possibility of the utilization of brick-based CDW in lightweight aggregate concrete became significant.
The production method of geopolymer lightweight aggregates (GLAs) is explored in this study through crushing technique, which has a good prospect for …
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.
The potential use of cold-bonded lightweight aggregate derived from various types of biomass fly ash for preparation of lightweight concrete ... The results suggested the contribution of SAI values and chemical composition of ash to enhancement of pellet crushing strength. ... Recycling ground granulated blast furnace slag as cold …
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.
This study investigated ed lightweight aggregate (FLWA) manufactured with hydrogen peroxide (HP) as a ing agent and using cold-bonded agglomeration process, a relatively low-polluting, energy …
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 ...
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%.
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 ...
After curing for 28 d the samples were processed into aggregate by crushing and sieving. ... alkali-activated slag concrete containing lightweight recycled aggregates produced by using Petrit ...
The high-frequency sound generated from heavy machinery involved during mining and crushing of stones in a free environment is the primary cause of noise pollution [5]. ... alternative coarse aggregates such as steel slag aggregate (SSA), ceramic wastes aggregate (CWA), Waste bricks aggregate (WBA), recycled coarse aggregate (RCA), …
This study has been conducted to explore the possibility of utilization of steel slag in concrete as coarse aggregate. 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.
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. …
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.
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 …
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 …
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.
Diffusion of CO 2 strongly influenced the carbonation efficiency of steel slag. A novel approach for preparing steel slag-based artificial lightweight aggregates (SALAs) was proposed, in which biochar was employed to provide internal CO 2 curing and reduce the bulk density. Owing to the additional diffusion channels and temporary storage tank …
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.
Artificial lightweight aggregate made from alternative and waste raw materials, hardened using the hybrid method
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 ...
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.
Keywords: blast furnace slag, fly ash, size effect, agglomeration, lightweight aggregate, individual crushing strength. INTRODUCTION Fly ash is one of the combustible mineral
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 …
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 …
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.
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 …
The cement-free bio-based cold-bonded lightweight aggregate (BCBLWAs) using steel slag and miscanthus powders via CO 2 curing was developed and investigated. The prepared BCBLWAs features a low density, low water absorption and high CO 2 uptake capacity. Lightweight concrete utilizing as-prepared BCBLWAs shows low density, …
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 …
Performance assessment of core-shell structured lightweight aggregate produced by cold bonding pelletization process ... on the aggregate crushing strength suggests that the pozzolanic activity of EPP could be higher than that of fly ash. ... Recycling ground granulated blast furnace slag as cold bonded artificial aggregate …
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 …
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. ...
2. PROPERTIES OF BFS AGGREGATES 2.1 PARTICLE SHAPE Due to the vesicular*. physical structure of air-cooled slag, crushing produces a cubic shape with fewer misshapen particles than found in some natural aggregates.
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 …
• 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
حقوق النشر والنسخ؛ 2024.Aava جميع الحقوق محفوظة.خريطة الموقع