A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Application of reinforced three-phase-foams in UHPC foam concrete
HighlightsImplementation of three-phase-foams with and without nanotubes was successfully done.Especially improved mechanical properties can be reached by three-phase-foams.Surface properties of used nanomaterials/surfactant and formed products were studied.Influences on morphology/carbonation and properties of foam concretes were shown.
AbstractOver the last years lightweight materials received considerable attention due to their invincible properties. Hereby, cost through materials saving, combination of thermal insulation with mechanical properties and sustainability are enabled. To reach also statical relevance but still achieve certain thermal properties, mainly aerated concretes are applied. One way to obtain comparable properties without cost intensive autoclaving is the application of UHPC approach. Another way to further enhance the performance of foam concretes are inorganic foams based on three phases which provide strengthening through pozzolanic reaction. Here, electrostatic interactions between solid particles and surfactants provide high foam stability.The combination of UHPC approach and implementation of three-phase-foams showed significant improvement of especially mechanical properties. Additionally, nanotubes were used to further improve performance of resulting foam concretes due to nanoreinforcement and their nucleation abilities. Before implementation of inorganic foams in the mortar, surface properties of used surfactant and nanomaterials as well as their influence on hydration products were investigated in a model system. Differences in their impact on hydration products and interactions among themselves were observed. Finally, reinforced three-phase-foams were successfully integrated and mainly focused mechanical properties improved. Results of the phase development, microstructure and mechanical properties of UHPC foam concretes are illustrated and discussed.
Application of reinforced three-phase-foams in UHPC foam concrete
HighlightsImplementation of three-phase-foams with and without nanotubes was successfully done.Especially improved mechanical properties can be reached by three-phase-foams.Surface properties of used nanomaterials/surfactant and formed products were studied.Influences on morphology/carbonation and properties of foam concretes were shown.
AbstractOver the last years lightweight materials received considerable attention due to their invincible properties. Hereby, cost through materials saving, combination of thermal insulation with mechanical properties and sustainability are enabled. To reach also statical relevance but still achieve certain thermal properties, mainly aerated concretes are applied. One way to obtain comparable properties without cost intensive autoclaving is the application of UHPC approach. Another way to further enhance the performance of foam concretes are inorganic foams based on three phases which provide strengthening through pozzolanic reaction. Here, electrostatic interactions between solid particles and surfactants provide high foam stability.The combination of UHPC approach and implementation of three-phase-foams showed significant improvement of especially mechanical properties. Additionally, nanotubes were used to further improve performance of resulting foam concretes due to nanoreinforcement and their nucleation abilities. Before implementation of inorganic foams in the mortar, surface properties of used surfactant and nanomaterials as well as their influence on hydration products were investigated in a model system. Differences in their impact on hydration products and interactions among themselves were observed. Finally, reinforced three-phase-foams were successfully integrated and mainly focused mechanical properties improved. Results of the phase development, microstructure and mechanical properties of UHPC foam concretes are illustrated and discussed.
Application of reinforced three-phase-foams in UHPC foam concrete
Krämer, Christina (author) / Schauerte, Matthias (author) / Müller, Torsten (author) / Gebhard, Sören (author) / Trettin, Reinhard (author)
Construction and Building Materials ; 131 ; 746-757
2016-11-03
12 pages
Article (Journal)
Electronic Resource
English
B , betaine , Cc , calcium carbonate , CH , calcium hydroxide , TiNTs , titanate nanotubes , CNTs , oxidized carbon nanotubes , NS , nanosilica , TwPF , two-phase-foam , TPF , three-phase-foam , TPF_oxCNTs , three-phase-foam with oxidized CNTs , TPF_TiNTs , three-phase-foams with TiNTs , UHPC , ultra high performance concrete , FC TwPF , foam concretes based on two-phase-foam , FC TPF , foam concretes based on three-phase-foam , FC TPF_oxCNTs , foam concretes based on three-phase-foam with oxidized CNTs , FC TPF_TiNTs , foam concretes based on three-phase-foam with TiNTs , LM , light microscopy , SEM , scanning electron microscopy , STA , simultaneous thermal analysis , XRD , X-ray diffraction , C<inf>S</inf> , compressive strength , F<inf>S</inf> , flexural strength , Foam concrete , Nanoparticles , Carbon nanotubes , Titanate nanotubes , Three-phase-foams , Mechanical properties
Application of reinforced three-phase-foams in UHPC foam concrete
| British Library Online Contents | 2017
Application of reinforced three-phase-foams in UHPC foam concrete
| Online Contents | 2017
Application of reinforced three-phase-foams in UHPC foam concrete
| Online Contents | 2016
Post-tensioned prestressed truss type reinforced UHPC-foam concrete combined floor plate
| European Patent Office | 2022
Local UHPC reinforced efficient prefabricated concrete laminated plate
| European Patent Office | 2020