TAIWAN CAPSTONE
Products
CAPSTONE S-420
S-350 and the S-420 are the most popular products of Capstone Series. S-420 features the high quality and high strength concrete test capping material. It is designated as the most reliable product by many professional testing labs. The high reputation of S -420 raised the demand. Modern buildings such as high-rise construction request S-420 as the minimum strength as qualification.
The water to gypsum ratio for S-420 is recommended to be 21-22%. After simply mixing with water, the gypsum is ready to use immediately and will be fully solidified after approximately 30 minutes and reach the strength over 420 kgf/cm2, Equals to 6000psi.
Compressive Strength Data
Compressive Strength and Maximum Thickness of Capping Materials
| Cylinder Compressive Strength kgf/cm 2 (psi) | Maximum Thickness Average Thickness of Cap | Maximum Thickness Any Part of Cap |
|---|---|---|
| 420 kgf/cm2 (4000 psi) | 6 mm | 8 mm |
Remark
- According to the regulations of US ASTM C617 standard, it is allowed to use high strength gypsum in capping cylindrical concrete specimens. Compared with other methods, gypsum capping is the most convenient, efficient, rapid, and safest capping method.
- TAIWAN CAPSTONE uses 100% pure gypsum to produce the high strength capping gypsum without adding extra filler. This procedure conforms to the regulations of ASTM C617 5.3.1 standard.
- Every delivered lot is under strict quality control
- Free sample delivery for testing is available
- Country of origin: Taiwan