Preparation of clay materials for the testing process is the process of preparing raw clay materials (natural) into a mass of plastic clay body, for it was some local clay either secondary or primary clay (mineral processed) in the area need to be prepared. Things to note are:
- Weighing must be accurate
- Conditions of clay must be completely dry
- Filtering by using a mesh with size 60
Preparation Process for Testing Materials Clay
1. Cut the clay into sections small ones later all dry clay will be used in the hot sun. This needs to be done to facilitate clay at a time in mashed and to get a measure of weight accurate in weighing.
2. Mash until smooth all The clay material, then dried in the blazing sun.
3. Strain clay using a sieve 50-80 mesh, then store in in special jars and give the name or label on each jar of soil material clay.
4. Weigh each ingredient required by some formula selected, enter into plastic bowl or bucket have been coded according to type clay.
1. Cut the clay into sections small ones later all dry clay will be used in the hot sun. This needs to be done to facilitate clay at a time in mashed and to get a measure of weight accurate in weighing.
2. Mash until smooth all The clay material, then dried in the blazing sun.
3. Strain clay using a sieve 50-80 mesh, then store in in special jars and give the name or label on each jar of soil material clay.
4. Weigh each ingredient required by some formula selected, enter into plastic bowl or bucket have been coded according to type clay.
5. Combine each The material according to formulas made of clay and stir in the dry state in order mixed evenly. Pour water piecemeal basis by using glass the size of the above mixture, so it becomes a dough plastic clay.
6. Ulilah clay mixture so that it becomes a plastic clay dough.
7. Insert the clay mass plastic ready to test in the bags and do ripening in the tub storage.
To get good results, all plastic mass ready for testing should be stored before use in combination deviation for ± 1 week for a process of decomposition by bacterial decay that can increase the level of plasticity.