Civil Engineer Notebook

  SETTING TIME OF CEMENT AIM:             To determine the initial and final setting time of cement. APPARATUS REQUIRED: Vicat apparatus confirming to IS: 5513-1976 Stop Watch Measuring jar Metal Tray Weigh balance SAMPLE The cement taken should be finely ground material which of addition of requisite quantity of water is capable of hardening both under water and in air by the chemical interaction of its constituents with water and capable of binding together the appropriate materials. (Reference IS: 3535 - 1986) PROCEDURE: Prepare a neat cement paste by gauging the cement (500g) with 0.85 times the water required to give a paste of standard consistency. The paste shall be gauged in the manner under the condition prescribed in IS: 4031(Part)-1988 Start the stop watch at the instant when the water is added to the cement. Record th...

 SETTING TIME OF CEMENT AIM: To determine the initial and final setting time of cement. APPARATUS REQUIRED: 1. Vicat apparatus confirming to IS: 5513-1976 2. Stop Watch 3. Measuring jar 4. Metal Tray 5. Weigh balance SAMPLE: The cement taken should be finely ground material which of addition of requisite quantity of water is capable of hardening both under water and in air by the chemical interaction of its constituents with water and capable of binding together the appropriate materials. (Reference IS: 3535 - 1986) PROCEDURE: 1. Prepare a neat cement paste by gauging the cement (500g) with 0.85 times the water required to give a paste of standard consistency. 2. The paste shall be gauged in the manner under the condition prescribed in IS: 4031(Part)-1988 3. Start the stop watch at the instant when the water is added to the cement. Record this time (t1). 4. Fill the Vicat mould with the cement paste gauged as above, the mould should be resting on a non-porous ma...