Title:
Compressive Behavior of Slurry Infiltrated Mat Concrete (SIMCON)
Author(s):
Neven Krstulovic-Opara and Mohammad Jamal Al-Shannag
Publication:
Materials Journal
Volume:
96
Issue:
3
Appears on pages(s):
367-377
Keywords:
compressive strength; fiber reinforced concrete; metal fibers; slurries; stress-strain relationships
DOI:
10.14359/635
Date:
5/1/1999
Abstract:
This study presents the compressive behavior of a new type of high-performance (steel) fiber reinforced concrete called slurry infiltrated mat concrete (SIMCON). SIMCON is made by infiltrated preplaced continuous steel fiber mats with a cement-based slurry. Due to its fiber-mat configuration, 1) individual fibers have very high-fiber aspect ratio, leading to a significant increase in strength, ductility, and toughness; and 2) fiber mats are delivered in prepacked rolls that can be easily cut and handled in the field, as compared to conventional short discontinuous fiber reinforced concretes (FRCs). Hence, SIMCON is well suited for repair, retrofit, and new construction of earthquake-resistant buildings, bridges, and other structures that require high strength and ductility. The study presents experimentally obtained stress-strain properties of SIMCON in compression. After a month of curing, compression strengths of up to 88 MPa (12.8 ksi) and strains at ultimate stress ranging between 0.5 and 0.7 percent were reached with 5.39-percent fiber volume fraction SIMCON. This study discusses the observed compressive behavior and presents model for predicting the entire stress-strain relationship, including the elastic modulus, ultimate stress, strain at ultimate stress, and ductility.