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Titel:

Acid attack on hydrated cement — Effect of mineral acids on the degradation process

Dokumenttyp:
Zeitschriftenaufsatz
Autor(en):
Gutberlet, T.; Hilbig, H.; Beddoe, R.E.
Abstract:
During acid attack on concrete structural components, a degraded layer develops whose properties as a protective barrier are decisive for durability. 29Si NMR spectroscopy and 27Al NMR spectroscopy were used with XRD to investigate the degraded layer on hardened cement paste exposed to HCl and H2SO4. The layer comprises an amorphous silica gel with framework silicates, geminate and single silanol groups in which Si is substituted by Al. Amorphous Al(OH)3 and Fe(OH)3 are present. The gel forms by...     »
Dewey Dezimalklassifikation:
540 Chemie
Zeitschriftentitel:
Cement and Concrete Research
Jahr:
2015
Heft / Issue:
74
Seitenangaben Beitrag:
S. 35-43
Reviewed:
ja
Sprache:
en
Volltext / DOI:
doi:10.1016/j.cemconres.2015.03.011
WWW:
http://www.sciencedirect.com/science/article/pii/S0008884615000976
Verlag / Institution:
Elsevier BV
Publikationsdatum:
22.04.2015
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