Phoenix Cement® Rapid Power™ Type III (LA) meets all chemical and physical requirements

of the current ASTM Specification C 150 for Type III Low Alkali Portland Cement and C 1157

HE, High Early Strength cement, as well as the requirements for Type III (HS). Rapid Power™

Type III (LA) is a high early strength cement suitable for use in most general construction

applications.

Durability

Rapid Power™ Type III (LA) is save for use in any application where protection against moderate or high sulfate attack is required.

The (LA) designation indicates low alkali requirements of ASTM C 150 are met, thereby reducing the potential for damage due to alkali-aggregate reactivity.

Economy

Rapid Power™ Type III (LA) can provide high early strengths more economically than richer mixes utilizing a Type I/II/V cement.

Salt River Materials Group has manufactured cement specifically designed for the Southwest since

1959. This experience enables Salt River Materials Group to continue to provide some of the highest

quality cement products available. Salt River Materials Group is the commercial trade name for all

marketing activities for Phoenix Cement Company and Salt River Sand and Rock.

Applications

Due to early-age strength development, Rapid Power™ Type III (LA) is excellent for:

• “Fast Track” paving or pavement repairs that must be put into service quickly

• Precast/prestressed and other cast structures that require early form removal

• Cold weather concrete applications where the controlled curing period is shortened

• Earlier splitting strength and reduced breakage in concrete masonry production

Strength, Set Time and Pumping Ability

Due to a higher fineness, Rapid Power™ Type III (LA)produces higher early-age strengths in concrete. In tests comparing Type I/II/V cement to Rapid Power™ Type III (LA), average one-day strengths were 30% higher in mixes utilizing Rapid Power™ Type III (LA) cement. Initial set times (by Vicat method) for Rapid Power™ Type III (LA) are approximately 20 to 25% faster than our Type I/II/V cement.

TYPE I I I (LA) PORTLAND CEMENT

Availability

Rapid Power™ Type III (LA) is produced year-round at our Clarkdale manufacturing facility 100 miles north of Phoenix. It is available in bulk and sack, by rail or truck, 7 days a week.

Mission Statement

Creating Opportunities and

Solutions with Quality

Products and Exceptional

People

Values

Profitability The Right Way...

Integrity, Accountability,

Excellence

8800 E. Chaparral Rd., Ste 155 | Scottsdale, AZ 85250(480) 850-5757 | Fax: (480) 850-5758 | www.srmaterials.com

Chemical AnalysisAverage Results

ASTM C 150 Specification

Calcium Oxide, Ca0 63.94% NA

Silicon Dioxide, Si02 21.29% NA

Aluminum Oxide, Al203 3.87% NA

Ferric Oxide, Fe203 3.55% NA

Magnesium Oxide, Mg0 1.86% 6.00% Max

Sulfur Trioxide, S03 2.83% 3.50% Max

Loss on Ignition 1.25% 3.00% Max

Insoluble Residue 0.30% 0.75% Max

Alkalies (%Na20+0.658% K20) 0.42% 0.60% Max

Potential Composition

Tricalcium Silicate, C3S 59% NA

Tricalcium Aluminate, C3A 4% 5% Max (HS)

Dicalcium Silicate, C2S 16% NA

Physical Data

Fineness, Blaine cm2/gm 5320 NA

Specific Gravity 3.15 NA

Autoclave Expansion -0.01% 0.80% Max

Air Content 7.50% 12.00% Max

Compressive Strength (psi)

1 Day 3020 1740 Min

3 Day 4630 3480 Min

7 Day 5590 NA

28 Day 6560 NA

Time of Setting, Vicat

Initial Set 1:35 0:45 Min

Final Set 3:35 6:15 Max

Photo micrographs of cement crystal structure

Clarkdale Shipping Facility

Cement Rotary Kiln, Clarkdale AZ

Sacking Operation, Clarkdale AZ

Clarkdale Limestone Conveyor System