6. Strength test results of the not aerated concrete samples maturated in water:

6.1. compressive strength not aerated concrete

Table [11]. Test results of the sample compressive strength, were was measured after periods of maturation in water

Summary – compressive strength of concrete samples ripened in tank water

Table [11]

W/C = 0.45

CEM II/A-L

CEM II/GGB CEM II/GGBS CEM II/GGBS

%

100

70/30

50/50

30/70

2 day

15.4

12.7

7.2

4.4

7 day

28.1

27.5

24.9

21.6

28 day

43.1

42.6

40.9

38.9

56 day

45.6

48.0

48.8

43.2

90 day

47.1

50.7

51.2

45.0

120 day

47.6

52.4

53.6

46.3

 

Graph(4) – course of research test results of compressive strength for not aerated concrete samples

 

The results have shown that, the increase in compressive strength of not aerated concrete samples containing GGBS after 120 days of ripening in tank water was significantly higher than other of not aerated concrete made with 100% CEM II/A-L where was (47.6N).

The highest compressive strength in the concrete mixes was the samples containing 30% GGBS (52.4N) and 50% GGBS (53.6N).

6.2. Tensile Strength not aerated concrete

Table [12]. The tensile strength test results of not aerated concrete, were was measured after periods of 120 days ripening in tank water

Summary –Tensile Strength of concrete samples ripined in tank water

Table [12]

W/C = 0.45

CEM II/A-L

CEM II/GGB CEM II/GGBS CEM II/GGBS

%

100

70/30

50/50

30/70

2 day

3.2

2.5

1.3

0.7

7 day

4.1

3.6

3.3

2.7

28 day

6.2

6.4

5.9

5.8

56 day

6.5

6.9

7.0

6.3

90 day

6.7

7.3

7.6

6.8

120 day

6.8

7.5

7.9

7.1

 

Graph(5) – course of research test results of tensile strength for not aerated concrete samples

The results have shown that, the increase in tensile strength of not aerated concrete samples containing GGBS after 120 days of ripening in tank water was (7.1 ÷ 7.9N) significantly higher than other not aerated concrete made with 100% CEM II/A-L were was (6.8N) .

The highest tensile strength in the concrete mixes was the samples containing 50% GGBS (7.9N).

Professor Pawel Lukowski. Head of the Department of Building Materials Engineering. Warsaw University of Technology

Dr. Eng. Joanna Julia Sokolowska. Department of Building Materials Engineering. Warsaw University of Technology

MSc. Eng. Ali Salih Technical and Quality Manager – Casey Concrete, Gorey Co. Wexford


Part I – DURABILITY OF CONCRETE CONTAINING GGBS IN EXPOSED TO FREEZING AND THAWING CONDITIONS

1- Abstract 2. Background 3. Prisms analysis of cement samples (MORTARS) 4. Test results of the Prisms 5. Test on Without Air Entrained concrete samples: 6. Strength test results 7. Durability Test

Part II – DURABILITY OF CONCRETE CONTAINING GGBS IN EXPOSED TO FREEZING AND THAWING CONDITIONS

8. Air Entrained Concrete 9. Strength test results of the air entrained concrete samples maturated in tank water 10. Durability Test 11. Conclusions of the study/a> 12. Literature

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