The pycnometer method has been adopted to measure the specific gravity of cement. The following observations are made: Weight of empty dry pycnometer bottle = 682.4 gms Weight of empty dry pycnometer bottle + cement = 745.4 gms Weight of empty dry pycnometer bottle + cement + keroseneThe pycnometer method has been adopted to measure the specific gravity of cement. The following observations are made: Weight of empty dry pycnometer bottle = 682.4 gms Weight of empty dry pycnometer bottle + cement = 745.4 gms Weight of empty dry pycnometer bottle + cement + kerosene = 1335 gm Weight of empty dry pycnometer bottle completely filled with kerosene = 1279.2 gm The temperature during test = 27oC Specific gravity of kerosene at 27oC = 0.773 Determine the specific gravity of cement. = 1335 gm Weight of empty dry pycnometer bottle completely filled with kerosene = 1279.2 gm The temperature during test = 27oC Specific gravity of kerosene at 27oC = 0.773 Determine the specific gravity of cement.

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Types of Cement

Cement is a fine mixture of limestone, chalk, or marl and clay which when mixed with water, becomes compacted due to the formation of strong molecular bonds. Due to hydration, cement turns into a hard mass when left for a sufficient amount of time upon mixing with water. The water turns the cement compounds into gel-like submicroscopic particles having higher surface areas. It is due to the hydration properties of cement, they are often known as hydraulic cement. For instance, Portland cement is a popular example in this category.