Effect of Y type polypropylene fiber on plastic shrinkage cracking of cement mortar

Title: Effect of Y type polypropylene fiber on plastic shrinkage cracking of cement mortar
Author(s): Y. Ma, B. Zhu, M. Tan, K. Wu
Paper category : journal
Serial title: Materials and Structures
Abreviated Serial title: Mater. Struct.
ISSN: 1359-5997
Publisher: RILEM Publications SARL
Volume: 37
Issue: 266
Issue date: 2004-03-01
Publication year: 2004
Pages: 92 - 95
Total Pages: 4
Nb references: 6
Language: English

Abstract: The bond behavior of prestressing strands is of great importance for the capacity of precast prestressed concrete structures.
In the present study, the bond behavior of threewire strands, and some influencing parameters, were examined by means of steel encased pull-through and pushin tests.
The three mechanisms: adhesion, friction and other mechanical actions were found to be present at the strandconcrete interface at different slip values.
The results from the experiments showed that the micro roughness of the strand surface strongly affected the initial bond response of the strand, that is the adhesion in the interface.
The maximum bond capacity of indented three-wire strands was found to be directly connected to the geometric properties of the strand indents.
The influence of the concrete strength on the bond capacity of the strand was hard to interpret.
However, the density of the concrete matrix was found to be a better parameter for determine the influence of the concrete rather than the compressive strength.

Online publication: 2004-01-26
Classification: Scientific Reports
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/13920