BULK DENSITY TEST OF COARSE AGGREGATE

 BULK DENSITY TEST OF COARSE AGGREGATE

AIM:

The bulk density of the coarse aggregate could be found out.

BULK DENSITY:

Bulk density is that mass of substance by unit volume and is in kg/lit as per the requirement of this standard.



APPARATUS:

1. Measuring jar

2. Weighing Balance

3. Tamping Rod

4. Shovel

SAMPLE:

This test is usually conducted on dry aggregate that fee that does not contain any unwanted materials. See: Reference IS: 2386 (Part III) 1963).

PROCEDURE:

1. Weigh out to the nearest 0.1gm. 50g of the sample.

2. Pour the sample in an appropriate graduated cylinder and fill the sample in three layers.

3. The sample will be packed to be approximately one-third full with thoroughly mixing aggregate and tamped 25strokes of the rounded end of the tamping rod.

4. Another similar measure of aggregate would then be added and 25 strokes more of tamping would then be rendered.

5. Up to 25 times there should be the last layer filled to overflowing and tamping.

6. The aggregate has to be straightened with the straight edge on its top surface

7. The aggregate in the measuring jar shall have the net weight determined.

NOTE:

When testing very light materials care should be taken that not too much of the sample are bounced out of the top of the cylinder when it is tamped down.

CALCULATION:

Bulk Density = (Mass of the sample)/ (Volume of the sample)

Note Bulk density may be expressed as g/cc.



NOTE:

Acceptable Value- Bulk Density must not exceed 10g / liter

REFERENCE:

S: 2386 (PART 3) -1963.


Comments

Post a Comment

Popular posts from this blog

SPECIFIC GRAVITY TEST OF COARSE AGGREGATE

Image
  SPECIFIC GRAVITY TEST OF COARSE AGGREGATE AIM: To determine the Specific gravity of the aggregate using Pycnometer . APPARATUS REQUIRED: 1. Pycnometer of about 1 litter capacity 2. Weighing balance, with an accuracy of 1g.                  3. Vacuum pump  4. Oven                                                                                           SAMPLE: The sample of 2000g to 1000g of aggregate shall be taken for tested. The aggregate which have been heated artificially shall not be taken. Reference IS: 2386 (Part III) – 1963 ). ads PROCEDURE: 1. A sample of 1kg for 10mm to 4.75mm size and 500gm for less than 4.75mm size. The sample is placed in a tray and fully covered w...
Read more

PARTICLE SIZE DISTRIBUTION TEST - SIEVE ANALYSIS

 PARTICLE SIZE DISTRIBUTION TEST - SIEVE ANALYSIS AIM: To determine the Particle Size Distribution of the Aggregate by Sieve Analysis. APPARATUS REQUIRED: 1. Set of IS Sieve           2. Weighing Balance PROCEDURE: 1. The test sample is dried to a constant weight at a temperature of 110 ± 5oC and weighed. 2. The sample is sieved by using a set of IS Sieves for 5 minutes. 3. On completion of sieving, the material on each sieve is weighed. 4. Cumulative weight passing through each sieve is calculated as a percentage of the total sample weight. 5. Fineness modulus is obtained by adding cumulative percentage of aggregates retained on each sieve and dividing the sum by 100. OBSERVATION: Tabulation for Coarse Aggregate: SI.No Sieve Size Weight Retained Cumulative Weight Retained Cumulative % Retained Cumulative % Passing 1 80     ...
Read more

pH VALUE OF WATER

Image
  pH VALUE OF WATER AIM: To find out the pH value of water. APPARATUS REQUIRED: 1. Glass beaker of 250 ml capacity 2. One or two electrode pH meter. 3. Known pH solution buffer of standard strength. 4. A glass stirred rod 5. A thermometer SAMPLE Analysis of the sample will be carried out as soon as possible and preferably in the field test during the sampling. The pure water and water that are not in contact with the atmosphere will be collected in the container and stored capped before analysis. (Reference IS: 3025 (Part XI) - 1983) PROCEDURE: 1. A glass beaker is collected and washed. 2. The water sample to be tested is added to the glass beaker with the addition of the buffer solution and mixed vigorously. 3. Allow a minimum of one hour to allow the sample to stabilize its temperature by stirring occasionally as it waits. 4. Calibrate the pH meter temperature controller to the temperature of the sample. 5. Calibrate the pH-value using the standard solution. 6. Dip the el...
Read more