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However, comparing this additional energy consumption in processing the concrete waste with the energy required to process the raw material for Portland cement production, it should be significantly lower due to: i) the higher porosity of the concrete waste, being easier to mill than the natural raw material used in the clinker production; …
Being an energy intensive industry, typically this segment of industry accounts for 50–60% of the total production costs [17].Thermal energy accounts for …
Cement is the binding agent of concrete, the most widely used construction material in the world. ... energy and CO 2 intensive process. In the EU, 90% of ... 2 emissions resulting from this thermal energy consumption only account for 35% of total emissions in 2017. 200 400 600 2005 2007 2009 2011 2013 2015 2017 [PJ]
Optimization of energy consumption during mixing using admixtures in concrete manufacturing is the predominant focus of this article. To achieve this objective, power consumption data were ...
However, the process of mixing concrete is energy-intensive and exerts significant wear and tear on the mixing blades, leading to maintenance costs and environmental concerns.
The NZE Scenario sees average thermal energy and electricity intensities reach less than 3.4 GJ/t clinker and 90 kWh/t cement, respectively, by 2030, excluding additional energy required for the deployment of emission reduction technologies such as carbon capture, which come with a penalty in terms of thermal fuels and electricity consumption.
Optimization of energy consumption during mixing using admixtures in concrete manufacturing is the predominant focus of this article. To achieve this objective, power consumption data were measured and analyzed throughout the concrete mixing process. The power consumption curve is the only source to distinguish the behavior …
Gu W, Li Z, Chen Z and Li Y (2020) An energy-consumption model for establishing an integrated energy-consumption process in a machining system, Mathematical and Computer Modelling of Dynamical Systems, 10.1080/13873954.2020.1833045, 26:6, (534-561), Online publication date: 1-Nov-2020.
They are hindered by low CO 2 capture efficiency and high energy consumption. Even worse: The resulting concrete is often weakened, hampering its applicability.
Globally, ~40% of global final energy use and energy- and process-related greenhouse gas emissions are caused by buildings and construction activities in which cement is an essential ingredient 1 ...
Request PDF | Thermal model of precast concrete curing process: Minimizing energy consumption | Worldwide, precast concrete elements are becoming the primary construction materials, and there have ...
While embodied energy is an indicator for overall energy demand, CO 2 emission is an indicator of the contribution towards global warming. There are many studies that deal with embodied energy and ...
Cement production is one of the most energy-intensive manufacturing industries, and the milling circuit of cement plants consumes around 4% of a year's …
The need for washing and drying the concrete waste prior to the magnetic separation was found to be the bottleneck of the RC production process in terms of energy consumption (Bogas and Sousa 2021; Sousa et al., 2021, 2022). The high energy consumption is driven not so much by the amount of water to be removed, but by the …
Both electrical and thermal specific energy consumption decreased about 22.6% and 19.9%, respectively from 2008 to 2010, which successfully complied with the …
Concrete is the most-used construction material worldwide. Previous studies on the environmental impacts of concrete production have mainly focused on the materials involved and energy consumption ...
1. Introduction. Power consumption and therefore efficiency of crushing equipment are becoming increasingly important mainly due to the continuous and rapid increase of energy costs and efforts to minimise CO 2 emissions (Tromans, 2008, Legendre and Zevenhoven, 2014).In order to meet the Paris Climate Agreement goals, …
The optimal DEC regime, consuming a mere 450 min, contrasts with the lengthy 780 min process required for steam curing. By considering time and energy consumption, the unit-strength energy–time product of DEC ranges between 22.01% and 27.86 % (at age 1 d) and 17.93%–23.45 % (at age 28 d) of that of steam curing.
Section 3 estimates the energy use in the U.S concrete industry, covers how energy is used in making concrete products in the U.S. and is helpful in identifying where to focus …
On a weight-normalized basis, concrete has a lower carbon and energy footprint than nearly all materials used in the built environment ().Nevertheless, the cement and concrete sectors are deservedly under scrutiny regarding their environmental footprint because of the sheer scale of production ().Greenhouse gas (GHG) emissions from the …
Concrete is the world's most widely used man-made material, with consumption growing exponentially as populations and incomes rise 1,2,3.Concrete's popularity, which stems from its low cost ...
Both techniques, however, share deal-breaking limitations. They are hindered by low CO 2 capture efficiency and high energy consumption. Even worse: The resulting concrete is often weakened, hampering its applicability. Uncompromised strength. In Northwestern's new approach, the researchers leveraged the fresh concrete …
The use of cement and concrete, among the most widely used man-made materials, is under scrutiny. Owing to their large-scale use, production of cement and concrete results in substantial emission ...
operation dominates the energy consumption and environmental impacts associated with the manufacture of cement and use of concrete and accounts for 74.2% of the industries' energy consumption. U.S. pyroprocessing systems, on average, operate at roughly 34% energy efficiency. -i
The CO 2 emissions associated with the cement and concrete cycle are calculated based on a comprehensive dataset documenting energy consumption and …
In this work, the life cycle energy consumption (EC LCA) of pelletizing is calculated following formula (1), which is the sum of process energy consumption (EC) and the corresponding primary fossil consumption factor (PFCF). (1) E C L C A = ∑ (E C s, j × P F C F j, i) where. EC s,j process energy consumption of one ton pellet during the ...
Energy Efficiency: Our RMC plants are equipped with advanced technologies that reduce energy consumption during the manufacturing process. Lower Carbon Footprint: Utilizing Kamdhenu's RMC Concrete not only results in lower greenhouse gas emissions but also enhances efficiency in transportation, thus reducing the necessity for on-site mixing.
Diesel consumed for the backfilling process is higher than for the excavation in P1. However, this situation is the opposite in P2. This is due to the site conditions. ... Based on the total energy consumption, concreting activity consumes a high level of energy in these projects. However, as the project involves the demolition of buildings …
The placement of concrete requires some energy to fuel devices for craning, pumping vibrating and finishing the concrete. Use of energy at the final stage can be reduced by utilising modern concrete such as SCC (Kwasny et al., 2015; Sonebi, 2004; Sonebi and Bartos, 1999, 2002) in order to facilitate the concrete operations and to eliminate the ...
Global cement emission patterns. Global emissions from cement production reached 2059 Mt CO 2 in 2018, where energy- and process-related emissions account for 34% and 66% respectively. Developed ...
The Production Process of Concrete: Concrete is constructed using cement mixed with an aggregate-- a grainy blend of materials such as stone and sand. After mixing, the concrete is poured into a mold and left to harden then use in building. The aggregates are sourced from a local body of water and crushed in a natural procedure.