Document J38K6qyaVz9Mzejy7rL1MaXOX

crele Insulation Conduit and Underground Division Zonolite Company 135 S. LaSalle St. Chicago 3, HI. UNDERGROUND PIPE INSULATION Z-CRETE* is a Lightweight Insulating Concrete which is poured directly and monolithically around heated under ground piping. Z-CRETE insulation serves as a mono lithic, jointless insulating filler around pipes. A curing and waterproofing mem brane completes the installation. GENERAL DATA The Z-CRETE system of underground insulation is a field fabrication adaptable to any size, number or arrangement of pipes. Six inches of insulation is ordinarily used on the outside of all pipes. A minimum of four inches is economical spacing be tween piping. Z-CRETE installations have no joints to leak heat or collect water--they are as permanent as the earth.-itself. Anchors; guides and expansion devices (except loops) are the same as used in any other system. The curing membrane provides external water protection and imparts a tensile strength to the conduit. TYPICAL Z-CRETE CONDUITS Commonly used designs of Z-CRETE are shown above. The single pipe and double pipe conduit consist of a structural concrete pad, pre-cast Z-CRETE support blocks on which the pipes rest, a pour of Z-CRETE insulating concrete and a curing and waterproofing membrane. The multiple pipe conduit at the right has a second pre-cast support for the upper group of pipes. REINSULATION OF EXISTING CONDUITS The ruinous effect of water on steel pipe and insulation is well known. Z-CRETE insulation restricts moisture, keeps the conduit dry. Inorganic Z-CRETE con crete naturally resists deterioration. Many existing hollow or Box Type Con duits may be reinsulated by pumping them full of Z-CRETE. The mass of water resistant Z-CRETE restricts the movement of moisture, so special drain age provisions are hot ordinarily re-, quired. Z-CRETE is sold and installed by licensed applicators of Zonolite Com pany under U. S. Patent No. 2355966 Canadian Patent No. 439356. There is an applicator near you. For further data or information, write Dept. HV-3. *Z-Crete is a registered trade mark of Zonolite Company. 1528 Insulation Atlanta Owens-Illinois Glass Company Kaylo Division Toledo 1, Ohio Sales Offices Chicago Houston New York Pittsburgh St. Louis Heat Insulation DENSITY............Approximately 11 lb per cu- ft. FLEXURAL STRENGTH.... 50 lb per sq in. COMPRESSIVE STRENGTH (at 5% deformation) Before heating............................ 150 lb per sq in. After heating for 24 hours at 750 F............................... 144 lb per 8q in. at 1000F............................ 123 lb per sq in. at 1200F............................... 117 lb per sq in. KAYLO HEAT INSULATION, a hydrous calcium silicate, is effective up to 1200 F. It performs efficiently through the hot water and low pressure steam range, also through temperatures in the super heated steam range. Therefore, a single material can be used for high tempera tures which usually require combinations of two different insulating materials. Kaylo Heat Insulation is incombustible and insoluble in water. Its light weight simplifies handling, shipping and applica tion. High strength makes breakage al most negligible. Kaylo Heat Insulation can be cut, scored or sawed with ordi nary tools. The material is non-irritat ing to the skin and non-toxic. After boiling for 24 hours (while wet)................................. 74 lb per sq in. LOSS IN WEIGHT After heating for 24 hours at 750 F....................................................5.5% at 1000 F.................... 7.9% at 1200 F....................................................9.8% After boiling for 24 hours (after drying)......... 0.2% RESISTANCE TO ABRASION (Conventional tumbling test-loss in weight after 10 minutes) Before heating....................................................2.2% After heating for 24 hours at 750 F.............................................'......... 3.7% . at 1000 F......... :.......................................... 5.7% . at 1200 F.....................................................6.9% DIMENSIONAL STABILITY KAYLO PIPE INSULATION is made to Simplified Dimensional Standards of thicknesses and diameters for snug nesting, when necessary. Coverings are sectional for tube and pipe sizes i in. to 12 in.; tri-segmental up to 23 in.; quad-segmental up to 41 in.; K-segmental (18 in. wide segments) up to 72 in. in diameter. linear shrinkage after heating for 24 hours at 750 F....-..................................................0.8% at 1000 F...................................................... 0.9% at 1200 F...... ............................................. 1.5% Elongation after saturation (max.)................. 0.04% MOISTURE ADSORPTION (volume) . After 6 hours exposure in atmosphere of 120 F and 90% RelativeHumidity.............0.9% CONDUCTIVITY (K) At 100 F mean temperature.......................... 0.39 At 500 F mean temperature...................... 0.54 KAYLO HEAT INSULATING BLOCK is made in all standard sizes, up to 18 in. wide and in thicknesses from 1 in. to 6 in. Where necessary, on special order, the. block can be shiplapped for broken joint, single-layer application in thicknesses of 3 in. or greater. WHITE FOR LITERATURE ON KAYLO HEAT INSULATION 1529