IbM PEMBUATAN BATU ALAM BUATAN MENGGUNAKAN BAHAN BAKU TEMPURUNG, KARANG, PASIR DAN SEMEN

Abstract

Due to the increasing price and the issue of nature conservation, using natural stone as a building material causes its own problems. The purpose of this activity is to alternate the natural stone material with synthetic materials so that the natural nuances still appear without disturbing the natural. Artifical raw materials used are coconut shell, reefs are widely obtained around their residence. Method of implementation: 1) Collection of raw materials of portland cement, coconut shell, coral and sand, 2) Manufacture of molding beggisting size 15cm x 30cm (22 pieces), 25cm x 40cm (19 pieces), and 10cm x 40cm (1 piece) with 2 cm of thickness, 3) Preparation of mortar with 2 layer composition, layer A with ratio 2 portland cement: 1 coconut shell: 1 coral, and B with the ratio of mixture 1 portland cemen: 2 sand and sufficient water, 4) Printing by filling the volume of the mold and allowing for 3 days, 5) Opening the mold begisting after casting 3 days, then soaking immersed for 3 days to get desired hardness, 6) Stripping the top layer to get desired texture with an iron grinder, 7) Doing the drying for 1 day and 8) We recommend that teh natural stone is finished with spesial paint for natural stone. The results obtained from the activity are: 1) Obtain the production of artifical natural stone, 2) Perform stripping of the top layer to obtain natural artificial stone texture using 2 cm thick grinding machine, 3) Conducting product marketing.

Mengembalikan Kejayaan Industri Kerajinan Cadas Silakarang di Kabupaten Gianyar melalui Penerapan Teknologi Cadas Termokromik Buatan

“…Tahap selanjutnya adalah membangun dan mengoperasikan instalasi pembuatan cadas buatan dan aneka kerajinan cadas buatan menggunakan teknik moulding dari four-axial blend: abu vulkanik Gunung Agung, nanokomposit silika-karbon dari abu sekam padi, semen Portland dan pigmen anorganik alami (tahan lumut dan termokromik). Cara pembuatan cadas ini mengadopsi metode yang telah dilaporkan oleh Pangaribuan & Belladona (2017) dengan bahan-bahan yang berbeda. Ada dua jenis produk cadas buatan yang dibuat yaitu cadas buatan berupa balok dengan ukuran 50 cm x 100 cm dengan ketebalan yang bervariasi 5 -9 cm sebagaai bahan baku kerajinan cadas Silakarang, dan produk seni kerajinan cadas cetakan yang sudah jadi (patung dan pandil).…”