A radioactive iodine uptake (RAIU) test uses a radioactive tracer and a special probe to measure how much tracer the thyroid gland absorbs from the blood. The test can show how much tracer is absorbed by the thyroid gland.
Learn How to Lay Blocks. Start mixing mortar mix as instructed. The first course of blocks should be installed below floor level and inside the foundation trench. This first line of concrete blocks shall rest on top of a layer of mortar mix. Spread mortar along the sides of the block and remove the excess mortar with a trowel. Repeat until the first course has been installed. Check the course with a level. Then, even it out with a thicker layer of mortar, if it is not.
According to several paver manufacturers, paving blocks can be installed on top of concrete without mortar if you first lay down a 1/2â³ to 1â bed of coarse sand. The process is nearly identical to laying a paver patio over ground. However, this type of installation should be done with caution, since drainage, settling, and cracking can be a problem.