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Table 5 Analysis of the orthogonal experiments.

From: Tensile and Fracture Properties of Silicon Carbide Whisker-Modified Cement-Based Materials

Parameter group number Factor Dispersion rate (%)
Dosage of water reducer (%)
A
Magnetic stirring time (min)
B
Ultrasonic dispersion time (min)
C
pH
D
1 0.3 5 1 7 78.1
2 0.3 10 2 9 82.7
3 0.3 15 4 11 89.7
4 0.4 5 2 11 80.6
5 0.4 10 4 7 77.5
6 0.4 15 1 9 77.4
7 0.5 5 4 9 77.7
8 0.5 10 1 11 84.5
9 0.5 15 2 7 81.3
\(K_{1}\) 250.5 236.4 240 236.9  
\(K_{2}\) 235.5 244.7 244.6 237.8  
\(K_{3}\) 243.5 248.4 244.9 254.8  
\(k_{1}\) 83.50 78.80 80.00 78.97  
\(k_{2}\) 78.50 81.57 81.53 79.27  
\(k_{3}\) 81.17 82.80 81.63 84.93  
R 5 4 1.63 5.97  
The primary and secondary subsequence D > A > B > C
Optimal level \(A_{1}\) \(B_{3}\) \(C_{3}\) \(D_{3}\)  
Optimal condition \(A_{1} B_{3} C_{3} D_{3}\)
  1. The dosage of SiCw in each group is 0.4%.