Welsch, Torsten and Schnellenbach-Held, Martina and Milow, Barbara (2018) Development of a New Multifunctional Structural Material: High Performance Aerogel Concrete. In: Proceedings - 1st International Conference on New Horizons in Green Civil Engineering (NHICE-01). 1st International Conference on New Horizons in Green Civil Engineering (NHICE-01), 25.-27.April 2018, Victoria, Canada.
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Abstract
The Institute for Structural Concrete (ISC) at the University of Duisburg-Essen developed in cooperation with the Institute of Materials Research at the German Aerospace Center (DLR) a new multifunctional structural material: High Performance Aerogel Concrete (HPAC). Chief ingredient of HPAC is silica aerogel granule which is embedded in a high strength cement matrix. Aerogel Concretes described so far in the literature exhibit very low thermal conductivities of 0.06 0.10 W/(mK) and very low corresponding compressive strength of fcm 2.5 MPa. Thus far the applicability of Aerogel Concrete as a building material for load bearing walls had to be discussed. Previous attempts to achieve the compression strength of normal strength concretes (fcm 20 MPa) involved a significant rise of the thermal conductivity up to 0.55 W/(mK), which counteracts the benefits of Aerogel Concrete in thermal insulation. The mixtures optimized by the ISC achieved thermal conductivities of 0.25 W/(mK) at a compressive strength comparable to Normal Strength Concrete (NSC). Compared to previous investigations, the thermal conductivities were considerable less over the full spectrum of investigated compressive strength in the range 2 MPa fcm 25 MPa. Beyond this improved correlation between compression strength and thermal conductivity, HPAC shows some remarkable properties that make it a real multifunctional structural material: By means of pull-out tests the general suitability of HPAC for reinforced construction elements was proved. Shear tests and adhesive tensile tests showed that it is possible to fabricate graded construction members made of HPAC. The building physical properties are also very promising: The measured sound absorption is higher compared to normal strength concrete. HPAC is water-repellent, open to diffusion and fireproof (melting point approx. 2000°C).
Item URL in elib: | https://elib.dlr.de/119888/ | ||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||
Title: | Development of a New Multifunctional Structural Material: High Performance Aerogel Concrete | ||||||||||||
Authors: |
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Date: | April 2018 | ||||||||||||
Journal or Publication Title: | Proceedings - 1st International Conference on New Horizons in Green Civil Engineering (NHICE-01) | ||||||||||||
Refereed publication: | Yes | ||||||||||||
Open Access: | Yes | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | No | ||||||||||||
In ISI Web of Science: | No | ||||||||||||
Status: | Published | ||||||||||||
Keywords: | Aerogel Concrete, Lightweight Aggregate Concrete, (Ultra) High Performance Concrete ((U)HPC), GFRP Reinforcement, Heat Insulation | ||||||||||||
Event Title: | 1st International Conference on New Horizons in Green Civil Engineering (NHICE-01) | ||||||||||||
Event Location: | Victoria, Canada | ||||||||||||
Event Type: | international Conference | ||||||||||||
Event Dates: | 25.-27.April 2018 | ||||||||||||
Organizer: | University of Victoria | ||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||
HGF - Program: | Transport | ||||||||||||
HGF - Program Themes: | Terrestrial Vehicles (old) | ||||||||||||
DLR - Research area: | Transport | ||||||||||||
DLR - Program: | V BF - Bodengebundene Fahrzeuge | ||||||||||||
DLR - Research theme (Project): | V - NGC Fahrzeugstruktur (old) | ||||||||||||
Location: | Köln-Porz | ||||||||||||
Institutes and Institutions: | Institute of Materials Research > Aerogele | ||||||||||||
Deposited By: | Milow, Dr. Barbara | ||||||||||||
Deposited On: | 13 Nov 2018 08:42 | ||||||||||||
Last Modified: | 31 Jul 2019 20:17 |
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