Sulfate Attack on Concrete - Chapter 5 pot
Sulfate Attack on Concrete - Chapter 5 pot
... Odler
5Consequences of sulfate
attack on concrete
5. 1INTRODUCTION
As discussed in the previous chapter, concrete subject to sulfate attack
undergoes a progressive and profound reorganization of ... as ettringite formation).
5. 4CONSEQUENCES OF SULFATE ATTACK ON THE
MECHANICAL PROPERTIES OF CONCRETE
Reports on the consequences of composition-induced internal sulf...
Sulfate Attack on Concrete - Chapter 2 pot
... the avail-
able silica to form additional C-S-H. For additional information on the role
portlandite in hydration and deterioration of concrete consult Skalny et al.
(2001). Both C-S-H and calcium ... hydration reactions in concrete are, in turn, influenced by the production
processes and the environmental conditions prevailing during the pro-
duction of concrete. Thus, in designing co...
Sulfate Attack on Concrete - Chapter 3 pot
... high
sulfate concentrations, and it is not only the concentration of sulfate anions
per se but also the type and concentration of the accompanying cations that
should be taken into consideration. ... of concrete
are summarized by ACI as follows (Table 3.1).
When examining concrete deterioration, one has to take into considera-
tion the local microclimate the concrete is exposed to....
Sulfate Attack on Concrete - Chapter 8 pot
... Minimize Attack on Concrete by Sulfate Soils and Waters.
Crammond, N.J., Longworth, T.I. and Sibbick, R.G. (2001) “Tredington–Ashchurch
Bridge on the M5: Examination of TSA-affected concrete ... Odler
Swenson, E.G. (ed.) (1968) Performance of Concrete: Resistance of Concrete to Sulph-
ate and other Environmental Conditions, A Symposium in Honour of Thorbergur
Thorvaldson, Univ...
Sulfate Attack on Concrete - Chapter 9 potx
... migration of sulfate- containing water into concrete. It results in
concentration of the sulfate near the concrete surface and leads to an
enhancement of the degradative action. The disintegration ... requirements for durable concrete, carbonation- and
chloride-induced corrosion, freeze-thaw attack and chemical attack , British Cement
Association.
Hooton R.D. (1999) “Are sulfate...
Sulfate Attack on Concrete - Chapter 0 docx
...
subjected to external sulfate attack
5. 3 Consequences of sulfate attack on the microstructure
of concrete
5. 4Consequences of sulfate attack on the mechanical
properties of concrete
5. 5Concluding remarks
References
6Prevention ... crystallization
4.12Bacteriogenic corrosion of concrete in waste
water networks
4.13 Conditions affecting sulfate attack
Referen...
Sulfate Attack on Concrete - Chapter 1 ppt
... assure long-lasting durability of concrete structures in sulfate- bearing
environment.
Man abuses concrete by:
•
use of wrong or marginal concrete materials and improper mix pro-
portions;
•
inappropriate ... and potential
developments of sulfate- resisting concretes”, J. of Testing and Evaluation
4
(5)
(September): 347– 354 .
Lerch, W. (19 45) “Effect of SO
3
content of cemen...
Sulfate Attack on Concrete - Chapter 6 ppt
... components of the concrete mixture.
Quality Control is clearly one key issue in the protection of concrete against
composition-induced internal sulfate attack. It is therefore recommended to
continuously ... ACI 201.2R-92, Guide to Durable Concrete, ACI.
ACI 31 8-9 9 (1999) “Building code requirements for structural concrete , American
Concrete Institute, Farming Hill, MI.
AST...
Sulfate Attack on Concrete - Chapter 7 doc
... effect of sulfate attack on service life of concrete.
The model is based on following assumptions:
1
Sulfate ions from the environment penetrate the concrete by diffusion;
2
Sulfate ions react ... and Ivan Odler
0
50
100
150
200
250
300
350
0 0 .5 1 1 .5 2 2 .5 3 3 .5 4
Concentration (g/kg)
position (mm)
Portlandite
CSH
Ettringite
Hydrogarnet
Gypsum
F
igure 7 .5...
