Laboratory testing of early age bond strength between concrete for shotcrete use and rock
2013 (English)In: Nordic Concrete Research, ISSN 0800-6377, Vol. 47, 81-100 p.Article in journal (Refereed) Published
Shotcrete(sprayed concrete) is, together with rock bolts, the most important material used for reinforcement in hard rock tunnelling. Sprayed concrete differs from ordinary concrete through the application technique and the addition of accelerators which give immediate stiffening. The bond between sprayed concrete and rock is one of the most important properties in the quality assessment of shotcreted concrete. During the very early age after spraying the physical properties of the concrete and the bond to the rockdepend on the accelerator and the micro structure that is formed. In this work a laboratory test method for measuring early bond strength for very young shotcrete is presented.
Place, publisher, year, edition, pages
2013. Vol. 47, 81-100 p.
Shotcrete, sprayable, rock, bond strength, testing
IdentifiersURN: urn:nbn:se:kth:diva-145676OAI: oai:DiVA.org:kth-145676DiVA: diva2:719543
QC 201405262014-05-262014-05-262014-05-26Bibliographically approved