Simulation of Expansion in Cement Based Materials Subjected to External Sulfate Attack .
Simulation of Expansion in Cement Based Materials
Subjected to External Sulfate Attack .
Mobasher, B.; Ferraris, C. F.
Concrete Science and Engienering: A Tribute toArnon
Bentur. Proceedings. International RILEM Symposium.
March 22-24, 2004, Evanston, IL, 1-12 pp, 2004.
cements; simulations; expansion; sulfate attack; mortar
Sulfate attack in concrete structures is considered to
be among the major durability concerns in civil
infrastructure systems. Proper modeling techniques can
help us understand the durability conditions more
readily and accurately. Such an understanding improves
the decision making process in every stage of
construction and maintenance and will help in better
administration of resources. Aspects of cement
chemistry, concrete physics, and mechanics are applied
to develop a model for predicting sulfate penetration,
reaction, damage evolution, and expansion, leading to
degradation of cement-based materials exposed to a
sulfate solution. The model is refined to address the
interaction effects of various parameters using
calibration data available from experiments conducted at
the National Institutes of Standards and Technology
(NIST). Parameters of the model were refined through
parametric analysis, consideration of specific boundary
conditions, and calibration with experimental data.