Ideal plasticity clay is clay that has dried shrinkage percentage between 5% s / d 8%. When the dry shrinkage test result is below the average of 5%, meaning less clay tested hard plastic so it is likely to be formed. To overcome this, it should be added that a plastic material such as bentonite ballclay or as needed. Conversely, ...
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Testing and Preparation of Clay Body
Some equipment and supplies and health and safety functions should be provided to carry out minimal testing process and clay body preparation. Wire cutters To cut the plastic clay when pengulian. Size: 40 cm length of wire, stainless steel materials. Needle To signal and make a line on the tile. Size: a total length of 14 cm, 4 cm needle ...
Read More »Clay Body Preparation for Testing
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 ...
Read More »Selection of Clay Body Formula
The selection or creation of formulas (mix) clay body is the first step clay testing needs to be done. For testing materials should be provided some kind of clay taken from several locations, the advantage is some kind of mix (soil formula) clay can be made. From the test results will be obtained some of the best formulas to be ...
Read More »Pengujian Kematangan Tanah Liat
Setelah proses pembakaran benda uji dengan tiga suhu pembakaran yang berbeda, maka langkah selanjutnya adalah melakukan pengujian suhu kematangan tanah liat seperti diuraikan berikut ini: 1. Ambil semua benda uji yang telah dibakar dan pisahkan untuk masing-masing formula tanah liat dan suhu pembakarannya 2. Amati benda uji tersebut dari warna bakarnya: pucat, cemerlang, atau gelap 3. Ketuk benda uji tersebut ...
Read More »Clay Body Tanah Liat Manual Kering
Pengolahan bahan tanah liat alam secara manual kering ini biasanya dilakukan untuk jumlah bahan tanah liat yang terbatas hanya untuk suatu proses pengujian tanah liat. Pengujian tersebut dilakukan untuk mendapatkan informasi tentang kondisi bahan tanah liat tersebut yang meliputi plastisitas, penyusutan, suhu bakar, warna bakar, dan porositas. Pengolahan dengan teknik ini hanya dilakukan untuk satu atau campuran beberapa jenis tanah ...
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