Solid-particle abrasion of hydraulic concrete

Title: Solid-particle abrasion of hydraulic concrete
Author(s): Yu Wen Liu, Huang Hsing Pan, Chao-Shun Chang
Paper category : conference
Book title: 2nd International RILEM Symposium on Advances in Concrete through Science and Engineering
Editor(s): J. Marchand, B. Bissonnette, R. Gagné, M. Jolin and F. Paradis
Print-ISBN: 2-35158-003-6
e-ISBN: 2351580028
Publisher: RILEM Publications SARL
Publication year: 2006
Nb references: 49
Language: English

Abstract: Most of the abrasion damage is caused by the action of water-borne particles (silt, sand, gravel, and other solid) impacting and rolling against the concrete surface during hydraulic structure operation. In this paper solid-particle abrasion of concrete containing slag was studied. Experiments included use of angular river sand abrade of mean diameter ~ 0.6, 1.2, 2.5 and 5 mm impacting at 30°, 45° and 90° to the concrete surface. The waterborne sand flow impact test method was used. Test results show that the abrasion rate to be a strong function of erodent size. As the erodent size increased from 0.6 mm to 1.2mm, 2.5 mm, then to 5mm, the abrasion rate of concrete increased from 123% to 262% and 385%. Moreover, the abrasion rate of concrete impacted at 90° was higher than of that of 30° and 45°. Material loss in concrete appears to have been caused by a complex combination of fracture mechanisms.

Keywords: Abrasion, Hydraulic Concrete, Impacting, erodent size

Online publication: 2006-08-02
Classification: 3.1 Theme 1: Numerical Models: from Microstructure to Transport Properties and Durability
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2351580028.033