%0 Conference Paper %1 worner_automated_2015 %A Wörner, Mark %A Sippel, Sören %A Schmeer, Daniel %A Garrecht, Harald %A Sobek, Werner %A Sawodny, Oliver %B Future Visions, IASS Symposium, August 17-20, 2015, Amsterdam, The Netherlands %D 2015 %K analysis automated chain, components, concrete functionally graded parameter process sobek %P Paper 501665 %T Automated spraying of functionally graded concrete components - Analysis of the process parameters %X Graded concrete components exhibit the beneficial property of adaptive material characteristics and, therefore, can be customized for predominant load profile in terms of structure or building-physical requirements. Functionally grading the components interior through a continuously variable alteration of the porosity can be employed to minimise the mass and to attain multifunctional characteristics. A complete automation of the process chain from the design to the manufacturing of functionally graded concrete components is developed currently in an interdisciplinary cooperation by the Institutes for System Dynamics (ISYS), Construction Materials (IWB) and Lightweight Structures and Conceptual Design (ILEK) at the University of Stuttgart, see 1, 2. The joint research project „Optimal structures made from functionally graded concrete” is part of the major German Research Foundation Programme 1542 „Lightweight construction with concrete“. The starting point in grading is the technological development of two concrete reference mixes with contrary characteristics. By employing dry spraying as manufacturing procedure the entire range of characteristics between the oppositional reference mixes can be obtained. Construction components can be produced in an automated manufacturing procedure combined with a suitable process control by applying the concrete with a multi-axis manipulator. However, the material technology, the application technique, and the overall machine concept for the spray concrete technique influence the manufacturing procedure of the functionally graded concrete construction components in a major way. Moreover, these factors have decisive effects on the quality of the sprayed concrete, its rebound behavior and the dust formation. In the following, a detailed analysis of the process determining parameters (i.e. the quantity of supplied air, the type of water supply or the nozzle position and movement) is presented, especially with regard to reproducible component production.

@inproceedings{worner_automated_2015, abstract = {Graded concrete components exhibit the beneficial property of adaptive material characteristics and, therefore, can be customized for predominant load profile in terms of structure or building-physical requirements. Functionally grading the components interior through a continuously variable alteration of the porosity can be employed to minimise the mass and to attain multifunctional characteristics. A complete automation of the process chain from the design to the manufacturing of functionally graded concrete components is developed currently in an interdisciplinary cooperation by the Institutes for System Dynamics (ISYS), Construction Materials (IWB) and Lightweight Structures and Conceptual Design (ILEK) at the University of Stuttgart, see [1], [2]. The joint research project „Optimal structures made from functionally graded concrete” is part of the major German Research Foundation Programme 1542 „Lightweight construction with concrete“. The starting point in grading is the technological development of two concrete reference mixes with contrary characteristics. By employing dry spraying as manufacturing procedure the entire range of characteristics between the oppositional reference mixes can be obtained. Construction components can be produced in an automated manufacturing procedure combined with a suitable process control by applying the concrete with a multi-axis manipulator. However, the material technology, the application technique, and the overall machine concept for the spray concrete technique influence the manufacturing procedure of the functionally graded concrete construction components in a major way. Moreover, these factors have decisive effects on the quality of the sprayed concrete, its rebound behavior and the dust formation. In the following, a detailed analysis of the process determining parameters (i.e. the quantity of supplied air, the type of water supply or the nozzle position and movement) is presented, especially with regard to reproducible component production.}, added-at = {2023-11-27T15:10:57.000+0100}, author = {Wörner, Mark and Sippel, Sören and Schmeer, Daniel and Garrecht, Harald and Sobek, Werner and Sawodny, Oliver}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2db318c635a0a6849a5ecc477653d070f/jmueller}, booktitle = {Future {Visions}, {IASS} {Symposium}, {August} 17-20, 2015, {Amsterdam}, {The} {Netherlands}}, interhash = {46fd4db90b56ab864e1d61160b3146a5}, intrahash = {db318c635a0a6849a5ecc477653d070f}, keywords = {analysis automated chain, components, concrete functionally graded parameter process sobek}, pages = {Paper 501665}, timestamp = {2023-11-27T15:10:57.000+0100}, title = {Automated spraying of functionally graded concrete components - {Analysis} of the process parameters}, year = 2015 }