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Document type:
Zeitschriftenaufsatz 
Author(s):
Gutberlet, T.; Hilbig, H.; Beddoe, R.E. 
Title:
Acid attack on hydrated cement — Effect of mineral acids on the degradation process 
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 Decimal Classification:
540 Chemie 
Journal title:
Cement and Concrete Research 
Year:
2015 
Journal issue:
74 
Pages contribution:
S. 35-43 
Reviewed:
ja 
Language:
en 
Publisher:
Elsevier BV 
Date of publication:
22.04.2015