This document discusses Amorphous Calcium Aluminate, a special cement distributed by CALTRA US. It can be adjusted using DELTA20 set retarder to provide extended workability while maintaining strength. Charts show that adding 0.3-0.5% DELTA20 increases initial and final set times. It is suitable for use with white Portland cement and has advantages like rapid drying, high early strength, low permeability and better durability. Applications include self-leveling underlayment, non-shrink grouts, shotcrete and concrete repair.

1. C12A7
Amorphous
Calcium
Aluminate
Special Cement Department
CALTRA US.- exclusive distributor;
DELTA PERFORMANCE 9126 Industrial Blvd.,Suite B , Covington, GA 30014
T:+1 678 729 9330 F:+1 678 729 9330 M:+1 770 231 2674 W: www.caltra.com
To adjust setting times DELTA20 set retarder is recommended, formulated to provide an
extended workability, with a minimal sacrifice of strength development
0
10
20
30
40
50
60
70
reference 0,3% Delta20 0,5% Delta20
minutes
initial set
final set
0
10
20
30
40
50
60
70
80
90
6 hours 1 day 3 days 7 days 28 day
compressivestrengthMPa
reference
0,3% Delta20
0,5% Delta20
a white powder and suitable to be used in combination with White Portlandcement
Comparative analysis
Following results are based on a mix where 10% of Ordinary Portlandcement (by weight) was replaced by Amorphous Calcium Aluminate.In all
cases it is mixed at a water/cement ratio of 0,40.Strength development tests were done on the neat paste.

2. Information and recommendations are based upon our experience and are offered merely for advise.
It does not guarantee certain properties and is based on present state of our knowledge, and does
not absolve the end-user from making his/her own testing prior to use.
CALTRA US Llc. can not be held responsible for any damage arising from the use of her goods.
ettringite crystal
Delivered in 44 lbs./20 kg. plastic bags
Or super sacks 1,38 short ton/1,25 metric ton - on wooden pallets.
Store in a dry place – do not stack pallets
When stored properly shelve life is up to 6 months.
Delivery rail cart or bulk truck upon request.
Advantages:
u rapid drying
u acceleration setting
u high early strength
u continuous strength development
u compensated shrinkage
u low permeability
u improved durability
u low temperature cement
u better freeze/thaw resistance
Applications:
u self leveling underlayment and screeds
u non shrink grouts
u fast set repair mortars
u waterstop / waterproof membranes
u shotcrete
u fast setting tile adhesives and grouts
u airfield repair
u DOT work
u low temperature concrete
®