Diamond Mountain 60 Lbs. Premix Concrete

Diamond Mountain’s 60-pound premix concrete achieves 4,850 PSI average strength — well above the standard 4,000 PSI most contractors expect from bagged concrete. The reinforced double bagging system with waterproof inner bag means this mix can sit outside on a jobsite without turning into a rock. For Montana contractors dealing with unpredictable weather and remote pours, that outdoor storage capability changes the game.

Superior Strength and Mix Design

At 4,850 PSI average strength with a 3,000 PSI minimum guarantee, this mix outperforms typical hardware store concrete by a solid margin. The one-inch minus aggregate specification contributes to that strength — larger rocks create better load distribution than the pea gravel found in cheaper mixes.

Specification	Value
Average Strength	4,850 PSI
Minimum Strength	3,000 PSI
Full Strength	28 days
Workable Strength	3-7 days
Slump Target	4 inches
Portland Cement Content	8 pounds per bag

The mix contains Portland Cement types 1 and 2, concrete sand and gravel. That dual-type cement provides both early strength gain and sulfate resistance — practical for Montana soils that can have high mineral content. Eight pounds of Portland cement per bag represents a richer mix than budget alternatives that skimp on the expensive ingredient.

Coverage and Yield Calculations

Getting material estimates right matters when you’re 50 miles from the nearest supplier. Each 60-pound bag yields 0.5 cubic feet when mixed with 0.5 gallons of water. That translates to 54 bags per cubic yard — contractors can calculate loads without guesswork.

Coverage Data	Value
Yield per Bag	0.5 cubic feet
Water Required	0.5 gallons per bag
Bags per Cubic Yard	54 bags
Application Thickness	Thicker than 1”

The mix handles standard applications including setting posts for fences and decks, pouring footers and foundations, sidewalks, walkways, patios, and general concrete repairs. For applications thicker than one inch, this premix delivers consistent results.

Weather-Resistant Packaging Innovation

The double bagging system with waterproof inner bag solves a chronic jobsite problem. Standard paper bags turn to concrete blocks after one rainstorm or snowmelt. Diamond Mountain’s system lets contractors stage materials outdoors without worrying about weather. The reinforced double bag system ensures long-term stability for outdoor storage.

For remote Montana jobsites where materials might sit for weeks before use, or residential projects where homeowners buy ahead for spring pours, that weather resistance prevents expensive waste. No more hauling rock-hard bags to the dump because they got wet.

Manufactured by Bozeman Brick Block & Tile, this is a regional product that understands Montana conditions. The regional specialization for Montana’s climate shows in both the mix design and packaging choices.

FAQ

How much water does each bag require? Each 60-pound bag requires 0.5 gallons of water. Measure it — too much water kills strength.

What’s the actual bag weight versus the 40-pound name in the product title? The actual bag weight is 60 pounds according to manufacturer specifications, despite the product name referencing 40 pounds.

How long before loading the concrete? Workable strength develops in 3-7 days. Full 4,850 PSI strength takes 28 days under normal curing conditions.

Can this mix handle freeze-thaw cycles? With Portland Cement types 1 and 2 providing sulfate resistance and 4,850 PSI average strength, this mix has the density to resist moisture penetration. The high cement content helps too.

Is this suitable for structural applications? With a minimum strength of 3,000 PSI and average of 4,850 PSI, it exceeds requirements for most residential structural concrete. Compatible with standard rebar and wire mesh reinforcement.