As ice forms on the surface of the frozen water, air bubbles cannot escape. These tiny, trapped bubbles make the center of the ice cube cloudy. Ice is water in its frozen, solid form. If water freezes in a crack in rock, the ice can eventually break the rock apart.

Why does freezing water break up rock? When water freezes it expands by nine percent. If it seeps into rocks and then freezes, the rocks can fracture and split apart, a process known as frost weathering.

Dexpan is a cement with amazing 18,000 psi expansive strength when mixed with water. Poured into pre-drilled holes, Dexpan can break concrete and rocks safely and quietly, while providing silent cracking. It is safe, easy and cost effective. AKA Dexpan Expansive Demolition Grout, Rock Splitting Compound Chemical.

Rock excavation, if it involves blasting to create small, movable chunks of rock from shelves or large boulders runs $40 to $100 per cubic yard. Rock presents the largest cost increase for digging if it’s larger than an excavator or backhoe can handle.

Dexpan is non-toxic, made of natural minerals and environmentally friendly. Dexpan help breaks concrete slabs, large rocks and boulders into more manageable sizes and shapes.

A standard 44lb. Box of Dexpan® would cover approximately 34-36 linear feet. FAQ#2: How big or small can I drill my holes? For best demolition results it is recommended to use a 1½” Diameter hole (1-1/2 inch). It is not recommended to exceed 2½” or go less then 1” in diameter.

Can you reuse dexpan once it’s in powedered state? Answer: Product can be reactivated once it completely goes back into powdery state.

Dexpan, made up of mostly calcium oxide, is mixed with water, then poured into holes in large rocks or boulders to quarry. How does Dexpan work? Dexpan® is a cement with amazing 18,000 PSI expanding strength when mixed with water.

TNT is an example of a relatively powerful explosive that is oxygen deficient. Some explosives are mixtures of chemicals that do not react and are known as composites….

Rotary hammers use an electro-pneumatic hammer piston to generate high impact energy, which allows it to drill or demolish concrete. Demolition hammers can break, chip and chisel concrete, but they can’t drill because there is no rotation of the bit.

Strike the slab with a sledge hammer about 12 inches from the point where the pickax touches the underside of the slab. Do this repeatedly, and after a short time the slab will break up into small pieces.

You can put new concrete over old concrete. However, unresolved issues with your old concrete, such as cracks or frost heaves, will carry over to your new concrete if not taken care of. In addition, you must pour it at least 2 inches thick.

Following with layers of larger recycled concrete packed with dirt will create an even, beautiful retaining wall. Smaller, more broken up concrete is a great drainage alternative to gravel.

Urbanite Pathways

For larger projects such as buildings and homes, the concrete should last 30 to 100 years or more depending on the construction style as well as method of installation. Many times, a concrete shell of a building or home can be reused when the other materials such as wood begin to deteriorate.

Crushed Concrete Prices. Crushed concrete costs $11 to $53 per ton, around $16 to $75 per cubic yard, and $1 to $3 per cubic foot, with prices depending on the quantity. Leftover concrete and broken asphalt get crushed and recycled, which is a cheaper and more eco-friendly solution for gravel driveways.

Frequently referred to as crusher run, quarry process (QP) or dense grade aggregate (DGA), crush and run is comprised of pulverized stone and stone dust. Depending on the quarry where the material was manufactured, crush and run could be made up of crushed, screened and sized limestone, trap rock or granite.