Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 145-153 |
| Number of pages | 9 |
| Journal | Construction and Building Materials |
| Volume | 110 |
| DOIs | |
| Publication status | Published - 2016 |
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Assessment of test methods for characterizing the hydrophobic nature of surface-treated High Performance Concrete. / Weisheit, Sandro; Unterberger, Seraphin Hubert; Bader, Tobias; Lackner, Roman.
In: Construction and Building Materials, Vol. 110, 2016, p. 145-153.Research output: Contribution to journal › Article
TY - JOUR
T1 - Assessment of test methods for characterizing the hydrophobic nature of surface-treated High Performance Concrete
AU - Weisheit, Sandro
AU - Unterberger, Seraphin Hubert
AU - Bader, Tobias
AU - Lackner, Roman
PY - 2016
Y1 - 2016
N2 - The durability of concrete and concrete structures is significantly influenced by environmental conditions, resulting in e.g. the ingress of water and incorporated aggressive agents, with the latter being responsible for initiating and progress of deterioration processes within the material system. In order to reduce the ingress of water, water repellent agents are applied onto the concrete surface (surface treatment), with its performance strongly depending on the agent itself, the mode of application, environmental conditions etc. For the assessment of the performance of surface-treated concrete, standard test methods, such as Karsten-Tube penetration test, contact angle measurement, hydrophobic quality test, as well as more refined test methods, such as Infrared Spectroscopy (IR), moisture sorption analysis, and scanning electron microscopy coupled with elemental X-ray analysis (SEM/EDS) are used. These methods are commonly employed for the assessment of surface-treated ordinary concrete, leaving the question on their applicability to material systems exhibiting a denser microstructure, such as High Performance Concrete (HPC), unanswered. Within this experimental study, the aforementioned test methods are critically reviewed regarding their potential application to HPC, finally providing recommendations for evaluating the performance and durability of water-repellent surface treatment when applied to HPC.
AB - The durability of concrete and concrete structures is significantly influenced by environmental conditions, resulting in e.g. the ingress of water and incorporated aggressive agents, with the latter being responsible for initiating and progress of deterioration processes within the material system. In order to reduce the ingress of water, water repellent agents are applied onto the concrete surface (surface treatment), with its performance strongly depending on the agent itself, the mode of application, environmental conditions etc. For the assessment of the performance of surface-treated concrete, standard test methods, such as Karsten-Tube penetration test, contact angle measurement, hydrophobic quality test, as well as more refined test methods, such as Infrared Spectroscopy (IR), moisture sorption analysis, and scanning electron microscopy coupled with elemental X-ray analysis (SEM/EDS) are used. These methods are commonly employed for the assessment of surface-treated ordinary concrete, leaving the question on their applicability to material systems exhibiting a denser microstructure, such as High Performance Concrete (HPC), unanswered. Within this experimental study, the aforementioned test methods are critically reviewed regarding their potential application to HPC, finally providing recommendations for evaluating the performance and durability of water-repellent surface treatment when applied to HPC.
U2 - 10.1016/j.conbuildmat.2016.02.010
DO - 10.1016/j.conbuildmat.2016.02.010
M3 - Article
VL - 110
SP - 145
EP - 153
JO - Construction and Building Materials
JF - Construction and Building Materials
SN - 0950-0618
ER -