SFRC Construction Method is a construction method that resolves the problems of floor levelness, crack and finishing by mixing steel fibers of 0.5~1.0mm in diameter and 50-60mm in length.
Furthermore, it is an effective construction method in which it has slab crack control and increases the distribution of load capacity and load resistance capacity by changing the existing slab reinforcement method from 2-dimension form of reinforcement bars to 3-dimension free form of steel fibers, increasing the tensile and flexural strengths.
· Reinforcement of Steel Fiber increases the distribution of load capacity and load resistance capacity. · Distinguished with low occurrences of crack. · Increased resistance for shock and fatigue strength. · Increased floor strength with the use of high-strength concrete (design strength: 30Mpa and above) · Useful in floor quality and floor flatness with Concrete Mix Design. · Capable of separate construction and/or bonding for new/old concrete areas. · Reduce the construction period (Directly pouring the concrete on sub-base without reinforcement bar placement)
1. Standard of Free Movement in BS TR NO. 34
(4 general levels in FM, and the regulation is shown in the table below.)
Floor Classification
Typical Floor Use
FM1
Where very high standards of flatness and levelness are required.
Floors to FM 1 classification may need to be constructed using long strip methods. See Section 2.2.3
FM2 Special
Floors for possible conversion to Category 1 defined-movement
FM2
Buildings containing wide aisle racking with stacking or racking
Over 8m high, free-movement areas and transfer areas
FM3
Buildings containing wide aisle racking with staking or racking up
To 8m high retail and manufacturing facilities
2. The FM in ‘FM2’ of BS TR NO. 34 are abbreviations of free movement meaning the area that may freely move as the forklift, and “2” means the third level of 4 levels of Floor levelness standard.
Where very high standards of flatness and levelness are required.
Floors to FM 1 classification may need to be constructed using long strip methods. See Section 2.2.3
2.5
4.0
4.5
7.0
FM2
(Special)
Floors for possible conversion to Category 1 defined-movement
3.0
4.5
6.5
10.0
FM2
Buildings containing wide aisle racking with stacking or racking
Over 8 m high, free-movement areas and transfer areas
3.5
5.5
8.0
12.0
FM3
Buildings containing wide aisle racking with staking or racking up
To 8 m high retail and manufacturing facilities
5.0
7.5
10.0
15.0
For all classifications, all points surveyed should be within 15mm from datum.
