Uneingeschränkter Zugang

High Temperature Performance of Self-Compacting Concrete Containing Boron Active Belite Cement


Zitieren

Figure 1.

Grading curve of fine and coarse aggregates
Grading curve of fine and coarse aggregates

Figure 2.

Flow diameter of BABC mix
Flow diameter of BABC mix

Figure 3.

Compressive strength results
Compressive strength results

Figure 4.

Splitting tensile strength results
Splitting tensile strength results

Figure 5.

UPV results
UPV results

Figure 6.

Unit weight results
Unit weight results

Concrete mix composition

Concrete type Quantities (kg/m3)
Cement Water Silica fume Coarse agg. Fine agg.
CEMI 462 175 38 607 1014
CEM II 462 175 38 607 1014
BABC 462 175 38 607 1014

Chemical, physical and mechanical properties of cements

Composition (%) CEMI 42,5R CEM II B-M (P-LL)32,5R BAB
SiO2 20.79 19.15 21.56
Fe2O3 2.23 2.2 2.76
AI2O3 4.78 4.7 5.15
CaO 63.41 56.16 60.74
MgO 2.26 2.99 3.38
SO3 2.65 1.94 2.25
CI- 0.0172 0.0187 0.0354
Loss on Ignition 2.36 11.38 2.43
Na2O 0.38 0.34 0.47
Specific Surface (cm2/g) 4089 4911 3646
Specific Gravity (gr/cm3) 3.11 2.96 3.08
Comp. Strength (2 days) 30.4 22 12.7
(MPa) (28 days) 59.8 45 35.8

Effect of different cement types on rheological properties

Mix Flow diameter J-ring (mm) L-box V-funnel (s)
D (mm) t500 (s)
CEMI 700 2.5 20 0.8 9.6
CEMII 630 5.0 40 0.7 10.5
BABC 710 2.4 10 0.9 8.0

Experimental results

Compressive strength (MPa)
Control 100°C 200°C 300°C 400°C 600°C 750°C
BABC 45.21 43.91 35.37 34.59 32.6 20.49 8.3
CEMI 39.40 35.10 34.36 29.21 27.81 14.75 5.3
CEMII 29.80 26.74 24.98 22.79 20.61 12.31 3.5
Splitting tensile strength (MPa)
BABC 5.13 5.07 4.11 4.00 3.75 2.37 0.95
CEMI 4.37 4.04 3.96 3.38 3.21 1.61 0.61
CEMII 3.40 3.11 2.88 2.63 2.37 1.43 0.40
UPV (m/sn)
BABC 4250 4201 3905 3756 2945 1750 1560
CEMI 4055 4049 3750 3456 2875 1659 1458
CEMII 3879 3854 3423 3105 2469 1480 1210
Unit weight (kg/m3)
BABC 2271 2269 2250 2201 2156 2140 2079
CEMI 2266 2255 2216 2198 2145 2120 2018
CEMII 2250 2247 2213 2174 2153 2059 2042
eISSN:
1899-0142
Sprache:
Englisch
Zeitrahmen der Veröffentlichung:
4 Hefte pro Jahr
Fachgebiete der Zeitschrift:
Architektur und Design, Architektur, Architekten, Gebäude