Resco Products, Inc. furnishes both plastics and ram mixes. All of the products listed here are supplied pre-mixed, ready to use. They are supplied in cartons and/or pails.
Installing Plastic Refractories
• Use of a pneumatic rammer with a metal, convex-shaped head is recommended. • Use rigid forms for arches. Proper anchoring and support is essential. • When patching, clean surface thoroughly, and for best results, apply a coating of compatible high temperature bonding mortar before installing the plastic. • Trim surface while plastic is still soft. Do not smooth the surface-a rough surface allows moisture to escape. • Moisture escape holes are recommended for the hot face. Use a 1/8” diameter rod with a pointed end. Insert the rod approximately two-thirds of the thickness of the plastic on not more than 6” centers. • To control cracking in installations with large surface areas such as walls or roof sections, construction joints should be formed by scoring the surface of the plastic. Score to a depth of 1.5”. Score lines should be on 36” centers, vertically and horizontally, between anchors. • Drying and heat up should be started as soon as possible after installation is completed.
Suggestions for Installing Ramming Mixes • Use pneumatic rammers with wedge-shaped steel heads. Never use rubber heads. • Always use rigid forms, preferably steel. • Do not ram over loose, unconsolidated sub bottoms. • Material should be placed in approximately 2” layers of loose material and compacted. A steady flow of material is desired to prevent laminations. Ramming should be continuous to prevent material dryout between layers.