Performance of Concrete Subjected to Severe Multiple Actions of Composite Salts Solution under Wet-Dry Cycles and Flexural Loading in Lab
Artikel i vetenskaplig tidskrift, 2017

Several action regimes were employed, namely, those exposed to solutions containing single and/or composite chloride and sulfate salts, and under wet-dry cycles and/or flexural loading. The variations in dynamic modulus of elasticity (E-rd values) were monitored, as well as the key factor impacting on the chloride ingress when concrete subjected to multiple action regimes was identified by the method of Grey Relation Analysis (GRA). The changes in micro-structures and mineral products of interior concrete after different action regimes were investigated by means of X-ray diffraction (XRD), mercury intrusion technique (MIP), and scanning electron microscopy (SEM). The test results showed that the cyclic wet-dry accelerated the deterioration of OPC concrete more than the action of 35% flexural loading based on the results of E-rd values and the GEA. The analyses from micro-structures could give certain explanations to the change in E-rd values under different action regimes.

wet-dry cycles

concrete

Durability

Fly-Ash

Ingress

flexural loading

Chloride Environment

Cement

Sulfate Attack

composite salts solution

grey relation analysis

Wetting Cycles

Water

Slag

Författare

Y. J. Chen

Southeast University

J. M. Gao

Southeast University

Luping Tang

Chalmers, Bygg- och miljöteknik, Byggnadsteknologi

D. M. Shen

Southeast University

Journal Wuhan University of Technology, Materials Science Edition

1000-2413 (ISSN)

Vol. 32 4 830-837

Ämneskategorier

Materialteknik

DOI

10.1007/s11595-017-1676-9

Mer information

Skapat

2017-10-08