Table 4 ANOVA results for the effect of CCCA or CCFA on the tested properties.

From: Mechanical and transport properties of concrete incorporating recycled crushed clay bricks as coarse and fine aggregates

Property

Factor

DF

Sum of Square

Mean Square

F-statistic

P-value

Significance

Dry density

CCCA

4

284101.656

71025.414

79.281

< 0.0001

Significant

CCFA

4

78547.416

19636.854

22.770

< 0.0001

Significant

CCCA + CCFA

1

432875.760

432875.760

373.398

< 0.0001

Significant

Absorption

CCCA

4

16.260

4.065

26.705

< 0.0001

Significant

CCFA

4

4.224

1.056

8.393

0.0031

Significant

CCCA + CCFA

1

39.015

39.015

262.110

< 0.0001

Significant

Initial sorptivity

CCCA

4

167.820

41.955

8.251

0.0033

Significant

CCFA

4

807.060

201.765

121.121

< 0.0001

Significant

CCCA + CCFA

1

11.760

11.760

2.949

0.1611

Not significant

Secondary sorptivity

CCCA

4

0.996

0.249

1.758

0.2139

Not significant

CCFA

4

9.204

2.301

57.069

< 0.0001

Significant

CCCA + CCFA

1

1.815

1.815

31.510

0.0049

Significant

Compressive strength

CCCA

4

462.204

115.551

99.568

< 0.0001

Significant

CCFA

4

245.040

61.260

73.655

< 0.0001

Significant

CCCA + CCFA

1

438.615

438.615

254.772

< 0.0001

Significant

Splitting tensile strength

CCCA

4

1.980

0.495

17.188

0.0002

Significant

CCFA

4

0.996

0.249

4.672

0.0219

Significant

CCCA + CCFA

1

1.815

1.815

63.021

0.0014

Significant

Flexural strength

CCCA

4

14.616

3.654

115.341

< 0.0001

Significant

CCFA

4

8.664

2.166

53.720

< 0.0001

Significant

CCCA + CCFA

1

11.760

11.760

326.667

< 0.0001

Significant

Thickness loss by Abrasion

CCCA

4

2.004

0.501

4.945

0.0185

Significant

CCFA

4

2.724

0.681

4.743

0.0209

Significant

CCCA + CCFA

1

6.615

6.615

87.442

0.0007

Significant

Impact energy of Cylinderical specimens

CCCA

4

1753470.696

438367.674

86.246

< 0.0001

Significant

CCFA

4

1557487.056

389371.764

78.121

< 0.0001

Significant

CCCA + CCFA

1

1422137.535

1422137.535

323.664

< 0.0001

Significant

Impact energy of beams

CCCA

4

570210.516

142552.629

43.085

< 0.0001

Significant

CCFA

4

412796.004

103199.001

28.194

< 0.0001

Significant

CCCA + CCFA

1

599515.260

599515.260

217.096

0.0001

Significant

UPV

CCCA

4

1161234.240

290308.560

25.626

< 0.0001

Significant

CCFA

4

344237.904

86059.476

5.892

0.0106

Significant

CCCA + CCFA

1

2046686.415

2046686.415

112.782

0.0004

Significant

Schmidt rebound Number

CCCA

4

58.704

14.676

2.134

0.1509

Not significant

CCFA

4

57.936

14.484

2.481

0.1112

Not significant

CCCA + CCFA

1

63.375

63.375

7.232

0.0547

Not significant

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