By Frank Dehn, Hans-Dieter Beushausen, Mark G Alexander, Pilate Moyo
The Fourth overseas convention on Concrete fix, Rehabilitation and Retrofitting (ICCRRR 2015) was once held 5-7 October 2015 in Leipzig, Germany. This convention is a collaborative enterprise through researchers from the South African examine Programme in Concrete fabrics (based on the Universities of Cape city and The Witwatersrand) and the fabric technology workforce at Leipzig college and The Leipzig Institute for Materials Research and trying out (MFPA) in Germany.
ICCRRR 2015 keeps to hunt and to increase a legitimate base of idea and perform in fix and rehabilitation, via either theoretical andexperimental reports, and during stable case research literature. key features have to be addressed: that of constructing sound and simply utilized usual practices for fix, most likely codified, and the necessity to examine heavily the provider functionality of repaired constructions and service platforms. actually, with out making titanic efforts to enforce the latter objective, a lot of the trouble in fix and rehabilitation could end up to be below within your means or satisfactory.
The convention lawsuits comprise papers offered on the convention that are grouped below the six major topics of (i) Concrete longevity facets, (ii) evaluate of concrete buildings, (iii) smooth fabrics know-how, (iv) Concrete fix, rehabilitation and retrofitting, (v) functionality and overall healthiness tracking and (vi)
Education, study and necessities. the massive variety of top of the range papers provided and the wide variety of appropriate themes coated ascertain that those complaints can be a valued reference for lots of operating during this vital box and they will shape an appropriate base for dialogue and supply feedback for destiny improvement and examine. Set of e-book of abstracts (244 pp) and a searchable complete paper CD-ROM (1054 pp).
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Extra resources for Concrete Repair, Rehabilitation and Retrofitting IV: Proceedings of the 4th International Conference on Concrete Repair, Rehabilitation and Retrofitting
70 – Figure 2. Figure 1. Cement paste specimen and paste disks using in migration cell. Figure 3. tion cell. Rubber case and acrylic holder. indb 26 8/27/2015 9:07:31 AM Table 3. 3 Composition of electrolytes (mol/l). 47 The acid-soluble chloride content profiles or total chloride content in cement paste versus the time of extraction are shown in Figure 5. As expected, when the synthesized pore solution with chloride ions—solution 1 was still used as catholyte during the first four weeks, which simulates the condition that chloride ions in pore solution around the cathode migrated towards the anode under the impact of the electrical field, the chloride content in the pastes increased.
3, stage 6). g. (Auberg 1998). indb 19 8/27/2015 9:07:24 AM cylindrical sample space (2) is located. Within the sample space the hardened cement paste specimen (5) is exposed to a directed magnetic field (main magnetic field of strength B0) through which an equilibrium magnetization of the sample parallel to the B0 field is produced. The sample space itself is surrounded by a coil (3), by which the hydrogen nuclei of the sample can be excited for a short time with a high frequency field B1, perpendicular to the B0 field.
S. Müller Institute of Concrete Structures and Building Materials, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany J. H. Hardy Institute for Mechanical Process Engineering and Mechanics, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany ABSTRACT: Exposing concrete to a freeze-thaw attack in the presence of water increases the water content of the pores in relation to the pore volume (the so-called degree of saturation). Hereby the degree of saturation can significantly exceed the saturation reached by the capillary suction normally observed on concrete.