Reinforced Concrete Construction Materials
Chemi-Stone α
 
 
Chemi-Stone α Concrete Specimen Capping agent
· Purpose

- Capping material for compressive strength test concrete specimen
- Capping material for early strength test specimen utilized to determine when forms can be safely stripped.

 
· Characteristics

- Moulds can be removed after a specimen has gone through 40 minutes of capping. Furthermore, unlike capping purpose gypsum, water curing is available.
- Chemi-Stone α shows a 1 hour compressive strength over 200㎏f/㎠. Therefore, it can be used as a capping material for test specimen that is necessary to determine when forms can be safely stripped.
- 1㎏ unit portion packaging provides ease of use, and ease of storage regarding capping materials remaining after use.

 
· Properties
W/B (%) Setting time (minutes)
Compressive strength (㎏f/㎠)
Initial setting
Final setting
3 days
7 days
25 25 30 650 800
30 45 50 600 700
 
· How to use
① Adjust water cement ratio with capping method for ordinary portland cement, then use after mixing capping material.
② For capping method after mixing, use capping method for cement paste
 
· Storage

- Store gypsum in a dry and cool environment, and use the oldest in storage first.

 
 
· Product packaging

- 1㎏ / Vinyl pack
- 20 Packages / Pail bucket

 
 
 
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