4. INITIAL SETTING TIME TEST AND FINAL SETTING TIME  Vicate's apparatus is used.  An apparatus consists of a frame to which a movable rod is attache
{"Image DocumentName": "Vicate\u2019s apparatus is used.", "Image ImageDescription": "INITIAL SETTING TIME TEST AND FINAL SETTING TIME. Vicate\u2019s apparatus is used. An apparatus consists of a frame to which a movable rod is attached. An indicator is attached to the movable rod with the help of which penetration of the needle can be determined. Initial Setting Time. Mould is filled with cement paste. The needle is gently brought in contact with the cement paste. In the beginning the needle penetrates completely. After sometime the needle is again brought in contact with the paste and released. The process is repeated until the needles penetrates upto 5mm measured from bottom of the mould. Definition of initial setting time \u2013 the interval between the addition of water to cement and the stage when the needle ceases to penetrate 5mm layer of paste measured from the bottom, is known as initial setting time of cement. In about 30 minutes, it is said to have attained its initial set.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}