Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Dirk Lowke"'
Publikováno v:
Construction Materials, Vol 4, Iss 1, Pp 292-314 (2024)
This research investigates the fatigue behaviour and fracture mechanics of high-performance concrete (HPC), including various compositions such as HPC with basalt aggregates (HPC-B), HPC with gravel (HPC-G), and high-strength coarse mortar (CM) under
Externí odkaz:
https://doaj.org/article/2678165d8b1f4cddb059da44c7a8efa4
Autor:
Jan Hitzegrad, Leon Brohmann, Friedrich Herding, Kai Pfennings, Sven Jonischkies, Elisa Scharnbeck, Jeldrik Mainka, Inka Mai, Christian Windt, Harald Kloft, Achim Wehrmann, Dirk Lowke, Nils Goseberg
Publikováno v:
Frontiers in Marine Science, Vol 11 (2024)
Coastal biogenic structures, formed by ecosystem engineering species, often feature rough surfaces characterized by intricate topographies and highly three-dimensional reliefs. Their surfaces are shaped by waves and tidal currents and reciprocally in
Externí odkaz:
https://doaj.org/article/5829ed81887c45dfa7ec05f1d8ddb243
Publikováno v:
Frontiers in Built Environment, Vol 10 (2024)
Rammed earth is a construction material with a long history of traditional manufacturing. Due to its low environmental impact, positive impact on indoor climate and completely recyclable nature, its demand is also increasing in modern construction in
Externí odkaz:
https://doaj.org/article/66c9cb99ca5447788204255112d1ebf8
Autor:
Philipp Rennen, Stefan Gantner, Gido Dielemans, Lazlo Bleker, Nikoletta Christidi, Robin Dörrie, Majid Hojjat, Inka Mai, Karam Mawas, Dirk Lowke, Pierluigi D’Acunto, Kathrin Dörfler, Norman Hack, Mariana Popescu
Publikováno v:
Frontiers in Built Environment, Vol 9 (2023)
The research project presented here aims to develop a design-informed manufacturing process for complex concrete shell structures in additive manufacturing and thus overcome limitations of traditional construction methods such as formwork- and labor
Externí odkaz:
https://doaj.org/article/07c368d7431e46bab86e20b931aa98fd
Publikováno v:
Materials, Vol 15, Iss 17, p 6050 (2022)
In order to evaluate the influence of certain experimental or material-related conditions on results of the rapid chloride migration test (RCM test), statistical tests within and between samples are necessary. Thus, it needs to be clear which scatter
Externí odkaz:
https://doaj.org/article/b4a3da205d2c4286a68690dd2b933787
Publikováno v:
Materials, Vol 15, Iss 17, p 5807 (2022)
The increase in fluid transport due to separating cracks can lead to significant deterioration in the durability of reinforced concrete structures. Besides reinforcement and stress state, concrete mixture proportion has a significant effect on crack
Externí odkaz:
https://doaj.org/article/3ced2c11c18c45e092b5f376cfa4209d
Autor:
Inka Mai, Leon Brohmann, Niklas Freund, Stefan Gantner, Harald Kloft, Dirk Lowke, Norman Hack
Publikováno v:
Materials, Vol 14, Iss 20, p 6125 (2021)
The Large Particle 3D Concrete Printing (LP3DCP) process presented in this paper is based on the particle bed 3D printing method; here, the integration of significantly larger particles (up to 36 mm) for selective binding using the shotcrete techniqu
Externí odkaz:
https://doaj.org/article/a909be732ded4f69a8b73f5788eb273c
Publikováno v:
Materials, Vol 14, Iss 2, p 389 (2021)
For the selective paste intrusion (SPI) method, thin layers of aggregate are locally bound by cement paste where the structure shall arise. After completion of the printing process, the structure is excavated from the particle-bed and the unbound par
Externí odkaz:
https://doaj.org/article/20e46530c13f41838653c2ab88d4c72b
Publikováno v:
Materials, Vol 13, Iss 21, p 5024 (2020)
The 3D printing of concrete has now entered a new era and a transformation of the construction sector is expected to reshape fabrication with concrete. This work focuses on the selective paste intrusion method, which consists of bonding dry particles
Externí odkaz:
https://doaj.org/article/7006bbfd011f4a628a70d205b700663a
Publikováno v:
Materials, Vol 13, Iss 9, p 2173 (2020)
Cementitious pastes are multiphase suspensions that are rheologically characterized by viscosity and yield stress. They tend to flocculate during rest due to attractive interparticle forces, and desagglomerate when shear is induced. The shear history
Externí odkaz:
https://doaj.org/article/8572c1b92ff74c5f83a02696d0602c11