Using of Fly Ash and Blast Furnace Slag in the …
Figure 3.Aggregate crushing strength test configuration Lightweight Concrete Production A series of 18 concrete mixtures were designed at 0.5 water/cement ratio and a CEM I Portland
Crushing Crushing Lightweight Slag Aggregate
Effect of Carbonation Treatment on the Properties of Steel Slag Aggregate
On the other hand, lightweight fly ash reduces the weight of concrete. ... 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. Because the prepared steel slag …
Development of artificial one-part geopolymer lightweight aggregates …
DOI: 10.1016/J.JCLEPRO.2021.128200 Corpus ID: 237653073; Development of artificial one-part geopolymer lightweight aggregates by crushing technique @article{Xu2021DevelopmentOA, title={Development of artificial one-part geopolymer lightweight aggregates by crushing technique}, author={Ling-Yu Xu and …
Using of Fly Ash and Blast Furnace Slag in the Production of
In addition to these materials, many studies have also investigated the use of diatomaceous earth [3]. Industrial residues, such as coal ash and blast furnace slag [4], and aggregates of recycled ...
Characteristics of Cold-Bonded Lightweight Aggregate Produced …
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 ...
Study on the crushing strength improvement of artificial aggregates …
The crushing strength result of an individual aggregate was calculated according to Eq. (1), and the average value of 12 aggregates was reported. (1) σ = 2.8 P π d 2 where σ is the crushing strength of the aggregate (MPa), P is the failure load (N), and d is the distance between the loading points measured by three axials (mm).
CRUSHING STRENGTH PROPERTIES OF FURNACE SLAG …
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 study by pelletization process.
Production of Lightweight Aggregates for Construction
Natural aggregates mainly consist of manufactured crushed stone and sand created by the crushing of bedrock or naturally occurring unconsolidated sand …
Characteristics of Cold-Bonded Lightweight Aggregate …
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 additives. The results show that GGBS addition significantly improved the crushing strength of LWA, whereas there was no effective on …
Manufacture and performance of cold bonded lightweight aggregate …
Highlights Cold bonded lightweight aggregates were produced from slag, rice husk ash and fly ash. Without the additive of cement in manufacturing process. Alkaline activator solution was the wetting agent acting as coagulant. LWCs with unit weight in the range of 1836–2056 kg/m 3 were obtained. LWCs with 28-day compressive strength in …
(a) Aggregate crushing strength test configuration and (b) crushing …
Download scientific diagram | (a) Aggregate crushing strength test configuration and (b) crushing strength of artificial slag aggregates. from publication: Recycling ground granulated blast ...
A study of the properties of ed lightweight aggregate …
The Chinese National Standards 14779 for lightweight aggregate (CNS 14779) was used to assess the crushing strength of each of FLWA type [1], [17]. While CNS 14779 measures the general strength of aggregate, the standard does not measure the failure load.
Development of cement-free bio-based cold-bonded …
In this study, a novel bio-based cold-bonded lightweight aggregates (BCBLWAs) was developed with the use of converter steel slag and miscanthus powder …
Microstructure and Physical Properties of Lightweight Aggregates
By using blast furnace slag or metakaolin as co-binder, the aggregate crushing strength increases and aggregate porosity decreases. The utilization of biomass and waste fly ash as precursor for artificial LWAs is not only an ecological solution to waste management and recycling, but also a practical alternative for extraction of natural …
Slag Aggregate
Nomenclature and Terminology. James G. Speight PhD, DSC, in Asphalt Materials Science and Technology, 2016 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 …
(a) Aggregate crushing strength test configuration and (b) crushing …
Download scientific diagram | (a) Aggregate crushing strength test configuration and (b) crushing strength of artificial slag aggregates. from publication: Combined Use of Natural and Artificial ...
Blast Furnace Slag Aggregates FLY ASH REFERENCE …
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. Testing …
Cracking resistance and sustainability assessment of
This study evaluated the cracking resistance and sustainability performance of alkali-activated slag (AAS) concretes incorporating pre-wetted lightweight aggregates (LWAs) as coarse aggregates with three replacement rates (0, 50%, and ) of natural coarse aggregates (NAs), while the ordinary Portland cement (OPC) concrete …
Development of artificial one-part geopolymer lightweight aggregates …
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 …
Fly ash lightweight aggregates in high performance concrete
At this stage, it is appropriate to show a comparison between this aggregate and three other types. These are the Granite natural aggregate, the Dacite natural aggregate (an igneous volcanic rock with a high iron content and commonly used in Australia in concrete works), and another commercially available pelletized fly ash …
Selective crushing, enrichment by friction properties and
The paper suggests the use of methods of enrichment by friction properties, selective crushing, and hydrophobization to increase slag aggregate resistance to freezing …
Cone Crusher vs VSI (Vertical Shift Impactor)
VSI means, 'Vertical Shaft Impactor'. In which shaft and crushing chamber are in a vertical position which is a latest crushing technology. The crushing action is caused by the closing of the gap between the mantle line (movable) mounted on the central vertical spindle and the concave liners (fixed) mounted on the main frame of the crusher.
Properties of lightweight aggregates produced with cold …
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 ...
Performance Evaluation of Alkali Activated Fly Ash Lightweight Aggregates
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%.
(a) Aggregate crushing strength test configuration and (b) …
This research studied the effects of using fine copper slag (CS) aggregates on the strength and microstructural properties of roller compacted concretes (RCC) by testing a total of 7...
Performance Evaluation of Alkali Activated Fly Ash Lightweight Aggregates
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.
Crushing Characteristics of Coarse Aggregates for Asphalt …
The crushing characteristics of coarse aggregates for asphalt concrete were investigated under static and dynamic aggregate crushing value tests (ACVTs). The effect of various compaction loads was also examined by using a Marshall hammer, gyratory compactor and steel roller. Six types of coarse aggregates were tested, …
Slag crushing
When a jaw crusher is equipped with the ASC system, the crushing forces are carried by massive hydraulic cylinders mounted into the rear header casting. If an uncrushable object enters the crusher cavity and …
Infrastructure and Construction Materials Guide — Aggregates
Other materials like slag and recycled concrete can be considered aggregates as well. Aggregates can be put in place as washed stone, mixed with cement for pouring concrete for paving or with asphalt for paving. ... • Natural lightweight aggregate prepared by crushing and sizing with screens, including pumice, scoria, tuff, breccia and ...
Development of an eco-friendly high-strength …
Keywords Coconut shell aggregate · Ground granulated blast furnace slag · Lightweight aggregate · High strength lightweight concrete · Lightweight concrete Introduction Concrete is the second-most abundant material in the uni-verse [1]. It is generally made of cement, aggregates, and water. A major portion of concrete (around 70–80%) is com-
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