Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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 plasticshrinkage 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.
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 plasticshrinkage 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.
Effect of different geometric polypropylene fibers on plastic shrinkage cracking of cement mortars
2002
Aufsatz (Zeitschrift)
Englisch
Effect of different geometric polypropylene fibers on plastic shrinkage cracking of cement mortars
| Springer Verlag | 2002
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