Microfibrous shotcrete mixture
AssigneeAfyon Cimento Sanayi Turk Anonim Sirketi
InventorsUgur Alparslan, Burak Erdal, Murat Yasa Kilinc, Serhat Sarikaya
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Abstract
A microfibrous shotcrete mixture which is used in mining applications, in highway, railway, subway tunnels, as excavation support element slope applications. The microfibrous shotcrete mixture provides a decreased amount of rebound. The objective of the present invention is to increase cohesion significantly and reduce the rebound amount in shotcrete up to four times by establishing a bridge between concrete particles by means of the special structure of the developed microfiber.
Claims7
A shotcrete mixture, which reduces an amount of rebound in shotcrete and increases cohesion by forming a bridge between concrete particles, comprising:
- polyethylene terephthalate (PET) or polyamide (PA) microfibers having a diameter between 10-35 microns, a finish oil content between 0.02%-2% on the microfibers, and a length between 0.4 mm and 70 mm, and wherein the microfibers are homogeneously distributed in the shotcrete, and reduce the amount of rebound in the shotcrete by 10-90% compared to a shotcrete mixture without microfibers.
Dependencies are inferred from the claim text.