34-6110/05
Category:
Fresh and Hardened Concrete Testing, Concrete
Sub Category:
Capping of Cylinders, Fresh and Hardened Concrete Testing, Capping of Cylinders
Product Group:
Sulphur Compound Method, Flake Capping Compound
Vitrobond HIGH STRENGTH CAPPING COMPOUND is a mineral-filled, sulfur-based compound formulated for capping concrete test cylinders. It is easily melted, pours smoothly, possesses higher compressive strength, and gives consistent test results. Sulfur-based capping compounds have been used for many years by independent testing laboratories, pre-stressed concrete structures manufacturers and federal, state and local testing agencies. This compound is suitable for running compressive strength tests upon high strength concrete.
**Not available for sale in USA**
PROCEDURE FOR USE
Vitrobond high strength capping compound caps are applied to the concrete test cylinder per ASTM C617. Contact ELE’s Technical Service Department for information on simple devices for occasional capping. It is suggested that at least two rigs be prepared to avoid loss of time in testing. The base plates of the rig should be very lightly oiled or coated with silicone compounds such as a 1% solution of General Electric Fluid SPFE or equal in toluene to facilitate the removal of the cap. When silicone release agents are used, the rig should be allowed to stand approximately 30 minutes after coating before pouring caps. If oil is used, extreme care should be taken to see that there is not an excess of oil which would affect the vitrobond high strength capping compound.
It is recommended that the base plate of the capping rig be preheated to retard the cooling rate of the vitrobond high strength capping compound. For the most consistent test results, it is suggested that the caps be applied using a vertical capper. Pour the molten vitrobond high strength capping compound on the base plate of the rig and promptly place the cylinder into the molten compound to a depth so that a cap of approximately 1/8" thick will be obtained. It is essential to ascertain that each cylinder is properly aligned so that the caps will be parallel. The cylinder may be removed as soon as the vitrobond high strength capping compound has hardened, and the other end may then be capped. The specimen may be tested 2 hours after the final pouring, but not before. It is not necessary to carry out any moist curing before the tests are performed.
CAPPING COMPOUND PREPARATION:
1. Break up ingots and place in a thermostatically controlled electrical melting pot. Melt the compound, stirring occasionally with metal rod or ladle. Recommended pouring temperature range is from 275°F (135°C) to 295°F (146°C)
2. Do not heat above suggested pouring temperature. Ignition of the capping compound could occur at temperatures above 320°F (160°C).If ignition occurs, turn off unit, and cover the melting pot. Burning will render capping compound useless
3. If molten capping compound foams due to entrapped air or moisture, continue heating and stirring until smooth again
STORAGE AND SHELF LIFE
Store all materials in a cool, dry environment. Keep all materials out of direct sunlight. Ideal storage temperature is 75oF (24oC). In unopened original containers, the materials referred to in this Data Sheet have a shelf life of approximately one year.
PRODUCT SPECIFICATION
The system shall be vitrobond high strength capping compound as manufactured by ELE International Ltd.
PRECAUTIONS
The materials referred to in this Data Sheet are for Industrial Use Only. They contain materials that present handling and potential health hazards. Consult Safety Data Sheets and the container labels for complete precautionary information.
TECHNICAL SERVICES
ELE maintains a staff of Technical Service Representatives who are available to assist you with the use of ELE products. In the event of difficulties with the application of ELE materials, the installation should be stopped immediately, and ELE’s Technical Service Department consulted for assistance.
WARRANTY
ELE warrants that its products will be free from defects in workmanship and materials under normal use for a period of one (1) year from the date of shipment by ELE (provided the products are installed before the expiration of the shelf life).
THERE ARE NO EXPRESS OR IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR THE PURPOSE FOR THIS PRODUCT WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE HEREOF. ELE’ LIABILITY FOR ALLEGED BREACH OF THIS WARRANTY SHALL BE LIMITED TO REPAIR OR REPLACEMENT OF THE DEFECTIVE PRODUCT (BUT NOT INCLUDING REMOVAL OF THE DEFECTIVE PRODUCT OR INSTALLATION OF REPLACEMENT PRODUCTS). ELE SHALL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES DURING THE WARRANTY PERIOD OR THEREAFTER. ELE’ WARRANTY IS VOIDED IF PAYMENT FOR PRODUCT IS NOT RECEIVED IN FULL.
Standard: 50 lbs (22.7 kg) carton containing 5 lbs (2.3 kg) ingots Crushed: 50 lbs (22.7 kg) bag
Density: 136 lbs/ft3 (2.18 g/cc)
Tensile Strength: > 1,000 psi (6.89 MPa) [48 hrs @ 77oF (25oC)]
Compressive Strength: > 9,000 psi (62.1 MPa) [48 hrs @ 77oF (25oC)]
Melting Range: 320oF (160oC) > 8,000 psi (55.2 MPa) [2 hrs @ 77oF (25oC)]
Optimum Pouring Range: 275oF (135oC) to 295oF (146oC)
Weight: Standard: 50 lbs (22.7 kg.) carton containing 5 lbs (2.3 kg.) ingots Crushed: 50 lbs (22.7 kg.) bag