Fine Aggregate Test Coarse Aggregate Test

22 CHAPTER IV RESULT ANALYSIS AND DISCUSSION

4.1 Foamed Concrete Materials

4.1.1 Fine Aggregate Test

From the test result found that fine aggregate water absorption is 3.72, whereas the maximum limit is 5, its mean that this fine aggregate has been good enough for concrete mixture design or it has met the standard requirement. So this fine aggregate can be used because the absorption no more than 5. The test result that has conducted on the sample specimen of fine aggregate, which will be used as a concrete material composer as shown in Table 4.1. Table 4.1 Fine aggregate test result No. Test Type Result Standard 1 Sludge level 3.50 Max 5 2 Bulk specific gravity SSD 2.56 2.5 – 2.7 3 Absorption 3.31 - 4 Fineness modulus 2.87 2.3 – 3.1 It is shown in the table 4.1 that the mud content of fine aggregate is 3.5 and less than 5, mean that the fine aggregate is good and ready to be used in the mix design without prewashing. This is lower than the water absorption is 3.63, then the aggregate in wet circumstances and to achieve a state of the SSD. Figure 4.1 and table 4.2 shows the gradation of fine aggregate that has meet the standard requirement for mixture and the value is between maximum value and minimum value. Table 4.2 Gradation of Fine Aggregate Sieve Size mm Blocked Passing Cumulative Standard Weight gr Percentage Cumulative 9.5 100 100 4.75 101 3.37 3.37 96.63 95-100 2.36 321 10.72 14.09 85.91 80-100 1.18 500 16.70 30.79 69.21 50-85 0.85 675 22.55 53.34 46.66 25-60 0.3 1089 36.37 89.71 10.29 10-30 0.15 185 6.18 95.89 4.11 2-10 Pain 123 4.11 100 commit to user 23 Total 2994 100 387.21 Figure 4.1 Fine aggregate gradations

4.1.2 Coarse Aggregate Test

From the test result found that fine aggregate water absorption is 3.67, whereas the maximum limit is 5, its mean that this fine aggregate has been good enough for concrete mixture design or it has met the standard requirement. This shows aggregate ability to absorb water in a state of absolute dry until dry saturated at 3.67 of the dry weight of the aggregate itself. So this fine aggregate can be used because the absorption no more than 5. The test result that has conducted on the sample specimen of coarse aggregate, which will be used as a concrete material composer as shown in Table 4.3. Table 4.3 Coarse Aggregate Test Result No. Test Type Result Standard 1 Abrasion 25,6 Max 50 2 Bulk specific gravity SSD 2.68 2.5 – 2.7 3 Absorption 3.67 - 4 Fineness modulus 7.84 5 – 8 commit to user 24 This abrasion test of concrete in the laboratory is to obtain concrete abrasion coefficient. The test result value is the value of the concrete surface resistance of a building component of water that can be used as a comparison with the value of the coefficient of abrasion on the building due to abrasion flow that transports sediment. The test result is 25.6 and the limit is 50 that is mean this already meet the standard condition. Figure 4.2 and table 4.4 shows the gradation of coarse aggregate has meet the standard requirement for mixture and the value is between maximum value and minimum value. Table 4.4 Gradation of Coarse Aggregate Sieve Size mm Blocked Passing Cumulative Standard Weight gr Percentage Cumulative 38 100 100 25 100 95-100 19 79 2.65 2.65 97.35 90-100 12.5 1662 55.79 58.44 41.56 - 9.5 427 14.33 72.78 27.22 20-55 4.75 811 27.22 100 0-10 2.36 100 0-5 Pain 100 Total 2979 100 433.87 commit to user 25 Figure 4.2 Coarse Aggregate Gradation

4.2 Lightweight Foamed Concrete