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.
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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 …
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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 or DM, the estimated energy consumption of RC was 30%–40% lower than that used in clinker production. Moreover, up to 80% savings in carbon emissions are estimated.
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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.
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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 …
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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 ...
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If all U.S. plants upgraded pyroprocessing to the technology of the best U.S. plant (a dry process, preheater with precalciner system3 ), the industry would lower its energy consumption by approximately 30% to approximately 3,230,000 Btu/tonne of cement and lower CO2 emissions by 13% to 75.3 x 106 tonnes/year.
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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 …
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Abstract. Mixing process plays a very important role in the concrete microstructure which defines the quality of the final product. The improvement of energy …
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Learn more. Cement is the glue that, when mixed with sand, aggregate, and water, produces concrete. Many aspects of modern civilization are made possible because of concrete, an indispensable material that is one of the most used substances on earth. Demand for cement and concrete is likely to continue to increase due to the expanding …
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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 …
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Cement. Cutting emissions from cement production is difficult due to the present reliance on carbon-containing raw materials and high-temperature heating requirements. Energy and material efficiency and low-emissions fuels are key measures in the near term. Deep reductions require a massive roll out of innovative technologies such …
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production process, m ix types and strength class es. The embodied energy and c arbon associated with th e. manufacture of concret e, and s ubsequent use in its most comm on application, ready mix ...
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The crushing requires significantly higher energy consumption when using smaller aperture size (5 mm instead of 25 mm) to process concrete specimens. (4) The LA coefficients of coarse RCA are very similar for all the types of crushed concretes; this is due to the use of the same type of aggregates in all concrete mixtures and to the good ...
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Open Access Article. Effects of Admixtures on Energy Consumption in the Process of Ready-Mixed Concrete Mixing. by. Veerabadrasamy Arularasi. 1,*, …
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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.
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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.
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Concrete requires only about 3 percent as much production energy as steel or glass and only about 1 percent as much production energy as aluminum. Concrete buildings use less energy in their day-to-day operation than buildings constructed of lighter weight materials. This is because of a phenomenon called thermal inertia, known more commonly as ...
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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 …
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In general, the unit process energy consumption models are developed by means of observing and monitoring energy consumption related to process variables, namely empirical modelling [8]. There were four stages of developing the empirical models. Firstly, a design of experiments (DOE) defined the tested process variables and their …
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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.
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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 …
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However, the energy consumption of the precast concrete manufacturing process and specifically the curing process is ignored by researchers. In this study, a …
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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 …
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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 …
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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; …
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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.
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Concrete production is a highly intensive energy-consuming process and presently facing a number of challenges in reducing the carbon footprint and making it more economic. Sustainable technologies in maintaining concrete structures are proving to be a great challenge. Microbially induced carbonate precipitation (MICP) has developed as a …
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Construction Worker and Equipment Energy Consumption for Offsite Precast Concrete. February 2020. Practice Periodical on Structural Design and Construction 25 (2):04020007. DOI: …
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Adoption of sustainable construction practices is of prime importance, in order to reduce resource exploitation and save for the future. Construction activities become energy intensive, due to the use of large quantities of raw materials, which need immense energy for processing them into the final product. Other factors include construction …
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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 …
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Published 27 Mar 2021. Abstract. To find the energy required during the mixing process of self-compacting concrete in a ready-mixed concrete plant and …
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The specific energy consumption of a ready mixed concrete facility depends on climate conditions and the state of the equipment. Energy consumption for ready mixed concrete delivery is estimated to be on the same order of magnitude as the energy consumption …
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