The carbon emission caused by the production of cement, which is one of the most carbon intensive materials, was 0.7 billion tons in total (0.4 billion tons for industrial process and 0.3 tons for energy use), which accounted for 56% of the carbon emissions from the building material manufacturing stage, as shown in Fig. 5 (b). 3.2.
The lower density. mixture A4 consumes the least power. In M30 concrete, the density of the mixture of B2, B3, and B4 does not increase or decrease much, even though the density of B2 is very high ...
Energy Consumption: Energy consumption is a crucial parameter in assessing the environmental impact of a product's life cycle [106]. It quantifies the amount of energy utilised at different stages, including raw material extraction, manufacturing, transportation, product use, and end-of-life processes.
However, the energy consumption of the precast concrete manufacturing process and specifically the curing process is ignored by researchers. In this study, a thermal model of a curing unit ...
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 ...
The production of cement is an energy-intensive process. Typically, energy consumption accounts for 20-40% of production costs. In 2008, the U.S. cement industry spent about $1.7 billion to purchase energy; around $0.75 billion of this was for electricity and $0.9 ... concrete, which is a combination of cement, mineral aggregates and water ...
Concrete with smart and functional properties (e.g., self-sensing, self-healing, and energy harvesting) represents a transformative direction in the field of construction materials. Energy-harvesting concrete has the capability to store or convert the ambient energy (e.g., light, thermal, and mechanical energy) for feasible uses, alleviating global …
Experimental data obtained from 17 concrete batches of two mix designs produced in a full-scale concrete plant were analyzed to figure out the energy …
The production and utilization of concrete and concrete-based products have drastically increased with the surge of construction activities over the last decade, especially in countries such as China and India. Consequently, this has resulted in a corresponding increase in the energy used for the production of ready-mixed concrete. …
Open Access Article. Effects of Admixtures on Energy Consumption in the Process of Ready-Mixed Concrete Mixing. by. Veerabadrasamy Arularasi. 1,*, …
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.
Step 1 - Site Work. Before concrete can be poured, the site needs to be prepared to reduce the chance of heaving from expansive soils and frost. On small projects, use hand to tools to clear the area of all grass, rocks, trees, shrubs, and old concrete, exposing bare earth. Earth moving equipment speeds up the process, especially for …
The thermal conductivity of concrete plays a crucial role in TES applications. It directly impacts the effectiveness of heat transfer within the material, which is essential for efficient storage and retrieval of thermal energy [[32], [33], [34]].A higher thermal conductivity facilitates faster and more efficient heat transfer, ensuring effective heat …
This leads to differences in concrete energy consumption. The power consumption during mixing is divided into different stages. The first stage starts from an empty …
To find the energy required during the mixing process of self-compacting concrete in a ready-mixed concrete plant and correlate the results with the yield stress of concrete. Power consumption required during the mixing of concrete is measured with a wattmeter connected to the mixing unit’s power supply. A coaxial cylinder …
1. Introduction. At the global level, the construction industry engages in activity that consumes the most natural resources [1,2,3].It is attributed 60% of the extracted raw material and it is associated with 40% of primary energy consumption and 33% of CO 2 emissions [4,5].This situation results in a decrease in resources for future generations …
Abstract. Mixing process plays a very important role in the concrete microstructure which defines the quality of the final product. The improvement of energy …
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; …
practices that account for the bulk of energy consumption in the concrete industry. This Energy Guide is offered as part of the ENERGY STAR® program. Additional energy …
In the M40 low-density concrete, C1 and C5 indicate higher energy consumption, while higher-density concrete C6 indicates the minimum energy consumption. From the above observation, we can clearly understand that density is an important factor in power consumption, but it is not the only factor that controls power consumption.
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.
The gaps identified from the above literatures are as follows: The power consumption required for the mixing of the concrete has not been studied for the ready-mix concrete. The impact of the admixtures, workability, and density of concrete on power consumption during mixing has not been explored. 2.
Energy consumption: The energy-intensive nature of cement production adds to the overall environmental impact of concrete. ... Use technology to make the concreting process more effective. By using technology in concreting, such as ConcreteDNA, the process can become more effective. Sensors can save time, money, …
concrete, in construction, structural material consisting of a hard, chemically inert particulate substance, known as aggregate (usually sand and gravel), that is bonded together by cement and water. Among the ancient Assyrians and Babylonians, the bonding substance most often used was clay. The Egyptians developed a substance more …
Abstract. We present the results of a study on process energy use of two asphalt-mixing plants. The production process involves the mixing of granite aggregates and bitumen to give asphalt mixtures. The mixtures are widely used as a road-paving material. A large part of the process energy use is for drying and heating the aggregates.
Carbon dioxide is one of several greenhouse gases that can cause global warming by trapping the Sun's radiant energy in our atmosphere. This process is called the greenhouse effect. Greenhouse gases include water vapor (36-70%), carbon dioxide (9-26%), methane (4-9%) and ozone (3-7%), among others. The percentages indicate the …
The slightly higher energy consumption in AM is compensated by the higher purity of concrete waste derived cement fraction. Adopting the low-energy intensive AM …
Assuming that the raw materials' transportation distance is 10 km, the distance from the mixing plant to the construction site is 10 km as well. The density of diesel is 0.84 kg/L. The electricity consumption of mixing 1 m 3 concrete is 2 kWh. The total energy consumption and GHG emissions of 1 m 3 concrete manufacture phase are …
Because of its abundance in the world market, understanding the environmental implications of concrete manufacturing is becoming increasingly important. The production of 1 m³ of concrete requires 2,775 MJ of energy. This energy comes mostly from oil burning, which generates CO2. 2.775 MJ of energy is produced by 0.37 …
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.