Currently, 3D concrete printing technology is not yet able to print ready-mixed concrete with coarse aggregates. Based on an independently developed 3D printing construction equipment system and optimized concrete materials, a 3D concrete printer that can directly print ready-mixed concrete is developed. This paper introduces the whole 3D printing process for one power distribution substation in detail, including the printing equipment, key software, concrete preparation, printing process, and construction inspection. This investigation will provide valuable design and construction experience for the future construction of 3D concrete printing.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6539074 | PMC |
http://dx.doi.org/10.3390/ma12091540 | DOI Listing |
Materials (Basel)
September 2024
Department of Building Materials Technology, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Cracow, Poland.
Materials (Basel)
September 2024
Institute of Building Materials Science, Leibniz Unviversity Hannover, 30167 Hannover, Germany.
Calcined clays (CCs) as supplementary cementitious materials (SCMs) can be a promising option to reduce clinker content and CO emissions in eco-friendly concretes. Although CCs as components of composite cements in combination with Ordinary Portland Cement (OPC) and limestone powder (LSP) have attracted industry interest, their use as concrete additives is limited. This study investigates the effects of the addition of CCs on the fresh and hardened properties of industry-standard ready-mixed concretes.
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April 2024
School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China.
As an environmentally friendly natural polymer, citric acid-modified chitosan (CAMC) can effectively regulate the hydration and exothermic processes of cement-based materials. However, the influence of CAMC on the macroscopic properties of concrete and the optimal dosage are still unclear. This work systematically investigates the effects of CAMC on the mixing performance, mechanical properties, shrinkage performance, and durability of concrete.
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February 2024
Department of Architect, Kangwon National University, Samcheok 25913, Republic of Korea.
J Environ Manage
February 2024
Faculty of Economics, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
Ninety-four percent of CO emissions induced by final demand in the global construction sector stem from the supply chain. Therefore, it is necessary to identify the CO emission hotspots within the supply chain and implement targeted reduction measures. This study proposed a supply chain clustering approach considering the functional unit of houses and identified CO emission hotspots within the supply chain structure of wooden houses, which accounted for approximately 90% of the total housing stock in Japan.
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