The document summarizes test results on the characteristics of fiber concrete made with basalt fiber. It projects the strength, cement grade and quantity, basalt fiber content, additional water needed, and air entrainment reduction for fiber concretes from M100 to M600 strength classes. The cement content is specified by construction laboratories based on cement type and age, and concrete workability. Own studies tested mortars from B7.5 to B40 strength classes with different admixtures. Regulatory limits set maximum cement at 500kg/m3 and mixing fiber concrete takes 15-25% longer than non-fiber concrete.

1. Forecast of fiber concrete (on basis of basalt fiber) main characteristics, due to the summarizing test results of conducted experimental research
Grade (class of matrix) of Projected Quantity of Additional Reduction of air
Quantity and cement grade*, kg/m3 Strength increase Notes
fiber concrete strength, N/mm2 basalt fiber, kg water,% entrainment,%
at
М400 М500 М600 compression at bending
1 2 3.1 3.2 3.3 4 5 6 7.1 7.2 8
M100** (B7.5) 10 190‐165 ‐ ‐ 0,6…..1,2 0,9…..1,1 0,10…..0,12 40…..58 35..…48 1;2
M150 (B12.5) 15 225‐185 ‐ ‐ 1,2…..1,7 1,0…..1,2 0,12…..0,15 32…..43 33…..44
M200** (В15) 20 260‐205 225‐175 ‐ 1,5..…2 1,2…..1,4 0,13…..0,17 28…..36 30…..39
M250** (В20) 25 305‐240 265‐200 ‐ 2,0…..4,0 1,4…..2,8 0,15‐…..0,30 25……31 26…..35
M300** (В22.5) 30 340‐265 305‐240 ‐ 2,0…..4,2 1,9……4,0 0,17……0,35 22…..27 24…..33
M350 **(В25) 35 385‐305 345‐280 ‐ 2,2…..5,0 1,8…..4,1 0,17……0,38 10……15 12…..30
M400** (В30) 40 ‐ 395‐305 350‐285 2,2…..6,3 1,7…..5,0 0,20……0,57 10……21 20…..30
M450 (В35) 45 ‐ 430‐345 390‐305 2,2…..6,4 1,7……5,5 0,21……0,57 11……14 16…..33
M500 (В40) 50 ‐ 480‐380 440‐340 2,5…..6,5 1,8…..5,5 0,25……0,63 7…..14 14…..20
M550 (В40) 55 ‐ ‐ 480‐375 2,5…..6,6 1,8…..5,5 0,25……0,64 5…..10 14…..20
M600 (В45‐В50) 60 ‐ ‐ 530‐415 2,5…..6,7 1,8…..5,5 0,25……0,65 5…..10 14…..20 3;4
* ‐ Actual cement content is specified in the construction laboratory based on impact: a) the type and shelf life of cement (cement activity decreases with the speed 15% per month)
b) applying of plasticizers, superplasticizers, admixtures, c) properties (grain size) crushed stone (gravel) and sand, d) the design of plasticity of concrete mixture P1.....P5
** ‐ own studies of Technobasalt‐Invest, LLC for this type of fiber concrete
1. For concretes and mortars up to М350 cement М400 is used; from М200 up to М400 can be used both М400 and М500; from М500 can be used only М600.
2. Conducted own experimental fiber concrete research, researches of mortars (based on basalt fiber) with classes of plasticity B7.5, B15, B20, B25, B30, B40 in the range of classes
plasticity from P1 to P4, using different types of plasticizers, superplasticizers, admixtures.
3. Regulatory limited cement content is up to 500 kg/m3
Duration of mixing concrete with basalt fiber increases by 15 .... 25% relative to the mixing concrete matrix without basalt fiber.