XS Terrazzo™ is a dual component precast concrete bag mix to which decorative aggregate is added and later exposed to create the unique, polished look of terrazzo. It greatly reduces the materials and labor required to construct traditional precast terrazzo. No reinforcement steel is required, thinner precast pieces are routine, and quicker production times including grinding and polishing are accomplished. A stronger, denser and more flexible cementitious composite is created by combining cutting-edge technology with modern fiber advancements. With a wide range of coloring and the addition of decorative aggregate, design considerations are nearly limitless. XS Terrazzo produces concrete countertops, fireplace mantles and facades, shower surrounds, wall panels, furniture and many other architectural elements. This mix design provides the opportunity to earn “green” points by using recycled content (e.g. glass, granite, stone, etc).
XS TERRAZZO MIXING
- Utilize a handheld concrete mixer with a helical (spiral) mixer blade, such as an Eibenstock model #EHR 20R or similar.
- Thoroughly mix XS Precast Modifier.
- Add 2 gallon (7.6 L) XS Precast Modifier to a clean 10 gallon (37.9 L) pail or similar mixing vessel
- Add XS Color (color pack) to XS Precast Modifier (if desired) and mix.
- While mixing add the XS Terrazzo bag.
- Continuously mix and add aggregate within the ranges described below:
a. A minimum of 50 lbs. (22.7 kg) of aggregate must be added
per bag of XS Terrazzo. Of the 50 lb. (22.7 kg) aggregate
load, 20% of load or 10 lbs. (4.5 kg) must be fine aggregate,
size 00 or smaller.
b. A maximum of 80 lbs. (36.3 kg) of aggregate may be added
per bag of XS Terrazzo. Of the 80 lb. (36.3 kg) aggregate
load, 20% of load or 16 lbs. (7.3 kg) must be fine aggregate,
size 00 or smaller.
- Scrape sides of pail with margin trowel to prevent dry fiber pockets from forming.
- Up to an additional 40 oz. (1.2 L) water may be added for a more fluid mix.
- After all components have been added continue to mix for 2 – 3 minutes
MIXING RATIO | 2 gal (7.6 L) XS Precast Modifier to 1 – 50 lb (22.7 kg) bag of XS Terrazzo + up to 40 oz (1.2 L) water 50 – 80 lb decorative aggregate
COVERAGE | 1 – 50 lb (22.7 kg) bag of XS Terrazzo = approx. 20 ft² @ ½” (1.9 m² @ 12.7 mm) 15 ft² @ ¾” (1.4 m² @ 19 mm) Varies based upon aggregate selection
DENSITY | 126.1 lb/ft³ (2,018 kg/m³) Varies based upon aggregate selection
COMPRESSIVE STRENGTH ASTM C-170
10,567 PSI (72,857 kPa) Varies based upon aggregate selection
FLEXURAL STRENGTH ASTM C-880
1,464 PSI (10,094 kPa) Varies based upon aggregate selection