relationship between the amount of ggbfs and compressive strength
TRANSCRIPT
Relationship between the amount of GGBS and the strength
Hume Concrete Sdn. Bhd.
3 Days ( Best Trend Line Selection)
0 20 30 50 700.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
f(x) = 0.378964285714283 x² − 5.8281757142857 x + 36.33198R² = 0.940778986985241
Percentage of GGBS (%) vs strength (MPa)Polynomial (Percentage of GGBS (%) vs strength (MPa))
GGBS value (%)
Stre
ngth
(MPa
)
Figure 1
Analysis (3 Days)
Trend Type R square value
Exponential 0.9168
Linear 0.9260
Logarithmic 0.9225
Polynomial 0.9408
Power 0.8800
For 3 days analysis, graph was plotted as shown in Figure 1. Then, best line fit was determined, together with equation of graph and R square value. There are 5 types of best fit line and their corresponding equation and R square value, as shown in Table 1.
Table 1: Value of R square for 3 days
Based on R square value, polynomial trend type is the best fit line, with a value of 0.9408 and corresponding equation as shown in Figure 1
7 Days (Best Trend Line Selection)
0 20 30 50 700.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0f(x) = 0.799635714285712 x² − 6.25116428571427 x + 44.01778R² = 0.600570901395164
Percentage of GGBS (%) vs strength (MPa)Polynomial (Percentage of GGBS (%) vs strength (MPa))
GGBS Value (%)
Stre
ngth
(MPa
)
Figure 2
Analysis (7 Days)
Trend Type R square value
Exponential 0.3905
Linear 0.4218
Logarithmic 0.4992
Polynomial 0.6006
Power 0.4596
For 3 days analysis, graph was plotted as shown in Figure 2. Then, best line fit was determined, together with equation of graph and R square value. There are 5 types of best fit line and their corresponding equation and R square value, as shown in Table 2
Table 2: Value of R square for 7 days
Based on R square value, polynomial trend type is the best fit line, with a value of 0.6006 and corresponding equation as shown in Figure 2
28 Days (Best Trend Line Selection)
0 20 30 50 7040.0
42.0
44.0
46.0
48.0
50.0
52.0
f(x) = 0.509521428571427 x² − 1.87053857142856 x + 46.59158R² = 0.781623474944022
Percentage of GGBS (%) vs strength (MPa)Polynomial (Percentage of GGBS (%) vs strength (MPa))
GGBS Value (%)
Stre
ngth
(MPa
)
Figure 3
Analysis (28 Days)
Trend Type R square value
Exponential 0.6262
Linear 0.6213
Logarithmic 0.4826
Polynomial 0.7816
Power 0.4901
For 3 days analysis, graph was plotted as shown in Figure 3. Then, best line fit was determined, together with equation of graph and R square value. There are 5 types of best fit line and their corresponding equation and R square value, as shown in Table 3
Table 3: Value of R square for 28 days
Based on R square value, polynomial trend type is the best fit line, with a value of 0.7816 and corresponding equation as shown in Figure 3