A sample of wet aggregate weighed 297.2 N. After drying in an oven, this sample weighed 281.5 N. The absorption of this aggregate is 2.5%. Calculate the percent of free water in the original wet sample.

Civil Engineering 2. Name the aggregate gradation type shown in Figure 1 and explain what the curve slope indicates. Name the common bituminous mixture with this gradation and describe how the gradation features influence the bituminous mixture characteristics 0.01 0.001 100 80 60 40 100 10 0.001 1 Grain Size (mm) 0.1 0.01 Figure 1 Percent Finer by Weight 20

The objective of the consolidation step is to achieve maximum particle packing and uniformity, so that minimum shrinkage and retained porosity will result during densification. Uniform particle size does not produce good packing. Adding particles of a size equivalent to the smallest voids reduces the pore volume to how much? O a. 23% O b. 52% О с. O d. 12% 40%

Coarse aggregate is placed in a rigid bucket and rodded with a tamping rod to determine its unit weight. The following data are obtained: Volume of bucket =14L Weight of empty bucket = 9.21kg Weight of bucket filled with dry rodded coarse aggregate: Trial 1 =34,75 kg Trial 2 =34.06 kg Trial 3 =35.74 kg a. Calculate the average dry-rodded unit weight b.If the bulk dry specific gravity of the aggregate is 2.620, calculate the percent voids between aggregate particles for each trial.

Sieve analysis of a sample of fine aggregate resulted in the following data   No. Sieve number  4 8 16 30 50 100 Sieve opening (mm) 4.75 2.36 1.18 0.6 0.3 0.15 Weight retained (g) 13 75 120 126 105 61     A) The total weight of the sample, assuming no mass loss during the analysis, is______ (g) a) 505; b) 500; c) 550   B) The half sieve used in the experiment is________. a) No.8; b) No.50; c) none of the above   C) The fineness modulus of the aggregate________. a) 6.13; b) 3.16; c) 1.36   D) The average size of the aggregate___________. a) No.30; b) No.4; c) No.16

I) Two aggregates (Al and A2) were obtained from the field. A sieve analysis was performed on each sample, and the samples (originally 500g in mass) were brought to the oven dry condition (OD) and weighed. Data was obtained for each of the aggregates and is presented in the tables below. (Density of water-1g/cm) Table 1. Results from sieve analysis. Sieve Size Opening (mm) Weight of Aggregate retained (g) A1 A2 3/8" 9.5 No. 4 4.75 65 No. 8 2.36 60 25 No. 16 1.18 100 396 No. 30 0.6 50 No. 50 0.3 118.5 10 No. 100 0.15 75 15 Pan 75 Table 2. Absorption capacity and moisture content data. Al A2 500 g 500 g Field Weight Oven Dry Weight Absorption Capacity (%) 0.7 % 498.5 g 496 g 0.6 % a) Plot the grading curve for each aggregate (x-axis: sieve opening, y-axis: %passing). (Note: In the grading curves, you must show all data points. You can draw the gradation chart using excel or by hand. If you draw by hand, you have to use a ruler. The format of the gradation chart should be same as in the…

For material testing,Take one destructive and one non-destructive test and explain how both test procedures produce useful results.

“construction of gravity-driven oil and water emulsion separator system in sinks using zeolite” Answer both • Significance of the research in local setting • edge of the product from other product