полипропиленового волокна

polypropylene fiber: Dear Sir, We can supply the pp fiber for concrete and this kind of fiber has been used to build high way, bridge in china .the following is the information about our produce: Chemical and physical properties Color: white Shape: Bunchy monofilament Diameter: 31μm Specific Gravity: l 0.91g/cm3 Melt point: 165-170 Ignition points: 590l Elongation at break: 30% Fiber length: 3mm,6mm,9mm,12mm,18mml Tensile strength :≥400MPa440CN/dtex Elastic Modulus :≥4.0GPa (4400l CN/ dtex) Alkali, Acid & salt resistance: high Electrical and thermal conductivity: low Security: safe & nontoxicProduct use Mixing designs and procedures: PP fiber reinforcing is a mechanical, not a chemical process. The PP fibers may have an effect on slump. The use of other admixtures may be necessary to maintain both slump and workability. Boning PP fibers are added to the mixer after batching the other concrete materials, before the addition of water. Mixing time should be a little longer than that without the addition of fibers.Thank you for your patient to read our information. Pls contact with us without any hesitates, if you have any question or inquiries!Thank you in advance!