Civil Engineer Notebook

  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...

  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...