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Effect of different geometric polypropylene fibers on plastic shrinkage cracking of cement mortars



Title: Effect of different geometric polypropylene fibers on plastic shrinkage cracking of cement mortars
Author(s): Y. Ma, 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: 35
Issue: 247
Issue date: 2002-04-01
Publication year: 2002
Pages: 165 - 169
Total Pages: 5
Nb references: 5
Language: English


Abstract: Three kinds of different geometric (cross-section) polypropylene fibers were used to investigate their effects on plastic shrinkage cracking of cement mortars.
The test results showed that polypropylene fiber made in drawingwire technique with circular cross-section (abbreviated as DW-PP fiber)had a more pronounced effect on the resistance to plastic shrinkage cracking than the polypropylene fiber made in a fibrillated film technique with rectangular cross-section (abbreviated as FF-PP fiber).
Polypropylene fiber with Y-shape cross-section had a little more effective than that of DW-PP fiber.
For the three kinds of polypropylene fibers,the plastic shrinkage cracking resistance for cement mortar increased with fiber addition changing from 0.
05%to 0.
15%.
It was observed that there was almost no plastic shrinkage cracking even when the volume fraction of DW-PP fiber was as low as 0.
10%.
The mechanism of the resistance effect of different geometric polypropylene fibers on the plastic shrinkage cracking of cement mortars is discussed.


Online publication: 2002-02-25
Classification: Scientific Reports
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/13674


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