Production, properties and life cycle assessment of artificial
The main raw materials used in this study were CSA and CSW. CSA uses corn straw produced by ordinary farmer s in Jilin, China. The production process of CSA was described in four steps as shown in the yellow part of Fig. 1: (1) Cutting and crushing.The selected corn straw was cut into 1–2 mm long pieces at first …
The influence of curing methods on the performance of …
The 28d compressive strength of concrete prepared using this artificial aggregate ranges from 15.8 MPa to 31.8 MPa, with flexural strength ranging from 2.1 MPa to 3.2 MPa. Tang et al. [14], [18] produced artificial aggregate using a mixture of fine incineration bottom ash (IBA) and concrete slurry waste (CSW) as the primary raw …
Recent advances in artificial aggregate production
Granulation is a process of consolidating solid particles in the size range of 1–500 μm into aggregates with larger sizes ranging from 2 mm to 10 mm (Ennis and …
Aggregate Production Planning and Scheduling in the …
Rosero-Mantilla, César, Mayra Sánchez-Sailema, Carlos Sánchez-Rosero, and Rosa Galleguillos-Pozo. Aggregate Production Planning, Casestudy in a Medium-sized Industry of the Rubber Production Line in Ecuador. in IOP Conference Series: Materials Science and Engineering. 2017 Kunming, China: IOP Publishing. [61]
The Use of Lightweight Aggregate in Concrete: A …
Abbas [3] investigated the production of expanded clay aggregate and the effects of processing variables on the material's mechanical and physical properties. Additionally, it examines auxiliary ...
Recent advances in artificial aggregate production
Semantic Scholar extracted view of "Recent advances in artificial aggregate production" by Pengfei Ren et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo ... Aggregates made from fly ash have been developed by means of the cold-bonding process, with the addition of Portland …
Preparation of artificial aggregate to be used in the asphalt …
The main aim of this study is to review the literature on the production and utilisation of recycled aggregate in concrete, concrete pavements, roadway construction, and other civil engineering ...
Comparative Environmental Evaluation of Sewage Sludge …
This study evaluated the environmental impact of landfill, incineration, and lightweight aggregate production for sewage sludge management techniques and compared the utilization of sewage-produced lightweight aggregates with natural aggregates in terms of building material production. Two scenarios were established for the life cycle …
Production and Utilisation of Artificial Coarse Aggregate …
production. After the process of agglomeration through pelletisation, the new post-processed pellets achieved forte as aggregate replacement in concrete. …
Recycling alkali activated slag into artificial aggregate
Wet granulation is a potential method to develop artificial aggregates. In this paper, the granulation of recycled alkali-activated slag powders with different particle size (d50 ranging between 12.9–127.7 μm) distributions were investigated in order to find how these affect on the engineering properties of the artificial aggregates. Blast furnace …
Preparation of artificial aggregate using waste concrete …
The main component of WCP was cement stone. The main components of WCAP were sand and aggregate. ... Moreover, considering CO 2 curing, the artificial aggregate processing site is suitable for building near high carbon emission ... these raw materials costs are negligible. The production process of artificial aggregate includes …
Production and Processing of Aggregates | SpringerLink
Initially, the large rocks are broken into pieces using the impact crusher. These rock pieces are fed to the jaw crusher to bring into aggregate form. The vibrating sieve is used to separate the aggregates of different sizes. The detailed processing procedure of natural coarse aggregate is shown in Fig. 2.2.
Use of CO2-active BOFS binder in the production of artificial
By developing a low-cost and energy-efficient carbonation process, FGDAA offers significant advantages in the construction field. With a production cost of only $5.14 per ton and a shorter curing time, it is environmentally sustainable and has a low global warming potential of 52.68 kg CO 2-Eq. Although its compressive strength of 32.52 MPa …
Optimum conditions for unit processing of artificial …
The purpose of this study was to investigate the unit processing parameters of a drying and preheating, calcination and sintering process for optimal bloating of artificial lightweight aggregates. Each process was divided into the room temperature ranges of up to 300 °C, 300 to 600 °C, 600 to 900 °C, and 900 to 1200 °C, with soaking at ...
Materials | Free Full-Text | Green and Durable …
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 …
A systematic review of aggregate production planning …
Aggregate production planning (APP) is the process of determining production, inventory, and labor levels to meet demand requirements over a planning window up to 1 year. As an emerging field, sustainable APP deals with the accommodation of environmental, economic as well as social sustainability criteria into the planning …
Recent advances in artificial aggregate production
Abstract. Artificial aggregates (AAs) are man-made construction material, and the properties greatly depend on its manufacturing process (e.g. granulation and …
A sustainable aggregate production planning model for …
Process industries typically involve complex manufacturing operations and thus require adequate decision support for aggregate production planning (APP). In this paper, we focus on two relevant features of APP in process industry operations: (i) sustainable operations planning involving multiple alternative production …
Producing of alkali-activated artificial aggregates by …
In the construction sector, the material supply chain of aggregates is frequently disturbed due to seasonal unavailability, quarrying issues, and environmental …
Geopolymer-Based Artificial Aggregates: A Review on …
The depletion of aggregate-related natural resources is the primary concern of all researchers globally. Recent studies emphasize the significance of recycling and reusing various types of natural or by-product material waste from industry as a result of the building industry's rising demand for aggregate as the primary component in concrete …
Use of mswi fly ash for the production of lightweight artificial
Cold bonded artificial aggregates were characterized by determining physical and mechanical properties of two selected size fractions of the granules for each studied mixture, and lightweight concretes were obtained, proving the suitability of the cold bonding pelletization process in artificial aggregate sustainable production. Expand
Natural aggregate sources and production | 2 | Aggregates …
Natural aggregate sources and production . DOI link for Natural aggregate sources and production. ... They exclude synthetic or artificial aggregates or marginal aggregates which are covered in Chapter 7. Also included in this chapter are aggregates that require minimal processing, and may be usable virtually from source, such as certain sands ...
Production of Artificial Aggregates Using Industrial By …
This experimental cum research exploration is focused on the production of artificial aggregates with an adoption of pelletization technique. The influential factors for ascertaining the efficiency of the production process are nature of binding agent, required moisture content, process duration and dosage of alkali binder.
Utilization of industrial waste materials for the production …
The production, curing method and combination of different raw materials were reviewed to identify the process of LWAs. Findings indicate that the specific gravity of the LWAs was approximately 16% to 46% lighter than the normal aggregate with higher water absorption (<25%).
Project Scheduling for Aggregate Production Scheduling …
As described in Sect. 56.2, the production of a high-complexity customised product can be modelled as the execution of a project and the simultaneously production of different products can be rephrased as different projects being executed at the same time and competing for the same production resources (machines, workers, etc.).Moreover, …
Assessment of the properties of concrete containing artificial …
The main objective of this study is to produce eco-friendly coarse aggregate from recycled waste materials such as GGBFS and fly ash with an alkaline activator[sodium silicate Na 2 SiO 3 and 8 M of sodium hydroxide (NaOH) Na 2 SiO 3 /NaOH ratio = 2:1 with water as an alternative bond material through the pelletizing …
20.2 Labor Productivity and Economic Growth
Figure 20.3 Output per Hour Worked in the U.S. Economy, 1947–2020 Output per hour worked is a measure of worker productivity. In the U.S. economy, worker productivity rose more quickly in the 1960s and the mid-1990s compared with the 1970s and 1980s. However, these growth-rate differences are only a few percentage points per year.
Recent advances in artificial aggregate production
Artificial aggregates (AAs) are man-made construction material, and the properties greatly depend on its manufacturing process (e.g. granulation and hardening) and the raw materials (usually different source of wastes) used. This paper reviews the granulation process and suitable raw materials for each hardening method.
Aggregates
The principal processing techniques used in aggregate production (crushing, screening, and washing) are described. Then, this chapter describes the properties of aggregates and their associated tests, organized them into five main groups: general, geometrical, mechanical and physical, thermal and weathering, and chemical …
A Review on the Manufacturing of Lightweight …
processing like curing and sintering. Desire size of artificial aggregate is obtained according to the application by agglomerate any raw waste materials during the production process of artificial aggregate [3]. A process such as sintering, autoclaving and cold bonding are the general 3 methods to produce artificial aggregate after the mixing ...