Hence, in this research, we aimed to utilize high-volume LM in the manufacturing of blended Portland cement based lightweight artificial aggregates (LAAs) via the crushing technique, instead of using the pelletization method, together with silica fume (SF) as the supplementary cementitious material to improve the properties of LAAs …
Lightwe ight aggregate includes a wide variety of materials. Natural-ly occurring aggregates that require only crushing and screening are pumice and scoria. …
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 efficient method of FLWA production. ... Crushing strength properties of furnace slag – fly ash blended …
The mobile crushing station is mainly used in metallurgy, the chemical industry, building materials, roads, mining, and other industries, especially roads, railways, construction waste, and other fields that need to relocate and process materials and can achieve coarse crushing, medium crushing, and fine crushing. It can meet the needs of different fields.
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 …
Steel slag is a solid waste produced in crude steel smelting, and a typical management option is stockpiling in slag disposal yards. Over the years, the massive production of steel slags and the continuous use of residue yards have led to vast occupation of land resources and caused severe environmental concerns. Steel slag …
There is a growing need to find ways to reuse fine concrete waste from the construction industry. In this study, recycled concrete fines were granulated and used as lightweight aggregates. Ladle slag, a steel industry residue, was used as a co-binder in different ratios (0, 10, 20, and 30%). The materials were blended and granulated, and …
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 considered …
Similarly, Zadeh et al. showed strength improvement, with a decrease of over two percentage points in aggregate crushing value (ACV) compared to the original …
The study investigates the use of artificial aggregates (AAs), specifically manufactured from ground granulated blast furnace slag (GGBFS) and ordinary Portland cement (OPC), to mitigate environmental harm caused by illegal quarrying due to the scarcity of natural aggregates (NAs). A cold-bonded pelletization technique was …
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Steel slag aggregate concrete has also inclined to decrease the water absorption characteristics and porosity after 28 days, ... and aspect ratio of the lightweight aggregate significantly affected mechanical strength ... The mechanical properties show a remarkably better performance of EOF steel slag, in terms of crushing, impact, …
CRUSHING STRENGTH PROPERTIES OF FURNACE SLAG-FLY ASH BLENDED LIGHTWEIGHT AGGREGATES P. Gomathi and A. Sivakumar 1Structural Engineering Division, VIT University, Vellore, Tamil Nadu, India Email: [email protected] ABSTRACT Crushing strength of lightweight aggregates depends on the efficiency of …
that steel slag aggregate surpasses natural aggregate by 27.72% in aggregate abrasion test, 31.41% in aggregate impact value test, 1.94% in ... 3.39% in aggregate soundness test, 6.17% in aggregate stripping value test and 29.81% in aggregate crushing value test. The purpose of this project is mainly to review the properties of steel slag and ...
Crushers break down large rocks into smaller pieces to such as sand, gravel, or slag to be used in aggregate via pressure or striking. Typically, rocks will go through multiple rounds of crushing to reach the desired size. Crushers are also used in construction material recycling and mining operations.
High carbon ferrochrome slags and clay were used to prepare lightweight aggregate (LWA). When burning temperature rose to 1200 °C, the aggregate could get a well expansion.
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 ...
Crushers break down large rocks into smaller pieces to such as sand, gravel, or slag to be used in aggregate via pressure or striking. Typically, rocks will go through multiple …
Recently, more studies have focused on the production of economic LWAs, using the cold-bonding process to produce sustainable lightweight aggregates by various industrial by-products (Tang et al., 2020b; Tang and Brouwers, 2017, 2018).Normally, ordinary Portland cement (OPC) is a necessary binder during the pelletizing process to …
Lime mud (LM), a solid waste generated in the paper-making industry, was proposed to manufacture lightweight artificial aggregates (LAAs) via the crushing technique. LAAs with a loose bulk density of 765–885 kg/m3, an apparent density of 1270–1445 kg/m3, and a strength of 5.7–7.2 MPa were …
The results show that granulation is a promising method to recycle alkali-activated materials as lightweight aggregates to replace natural aggregates. • New artificial aggregates were produced from recycled alkali activated slag. • Development of 131.8 N crushing force was achieved using optimal particle size of the raw material.
Possibilities in recycled aggregates 4 Buyer's guide 6 ® portfolio 8 TMNordtrack portfolio 10 Case studies 12 Technical data 14 ... and slag crushing. Features such as reinforced conveyor belts and magnetic separator make them suitable for demanding demolition applications. With Active Setting Control™ (ASC)
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.
1. Introduction. Lightweight aggregates (LWA) are characterized by lower bulk density in a comparison with common construction aggregates [1].LWA with a density below 2000 kg/m 3 are used particularly for the reduction of weight, improvement of durability, and enhancement of thermal and acoustic properties of concrete [2].Quite a …
Pelletization is a worldwide process used in producing artificial aggregates although its usage is not common in Turkey. 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 finenesses (Fly ash A and B). Ordinary …
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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 ...
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Figure 2c and d show the Los Angeles abrasion and crushing index of coarse aggregates. As the recycling cycle increases, there is a corresponding increase in both …
The crushing strength of this concrete is about 15 to 30 kg/cm 2 and its density varies from 800 to 1000 kg/cm 3. Lightweight Aggregate ... Its strength is about 15 to 40 kg/cm 2. ed slag. ed slag is also used for preparing light weight concrete. It is obtained by rapidly quenching the blast furnace slag in water.