Building materials Haydite masonry Haydite Ground Covers Haydite Sportsfields additives

Wherever you live, work or play, ESCS improves your world!

world1.jpg (2308 bytes)For nearly a century, ESCS (Expanded Shale, Clay and Slate) has been used successfully around the world in more than 50 different types of applications. The most notable among these are concrete masonry, high-rise buildings, concrete bridge decks, precast and prestressed concrete elements, asphalt road surfaces, soil conditioner and geotechnical fills.

What is ESCS? It is a unique, ceramic, lightweight aggregate prepared by expanding select minerals in a rotary kiln at temperatures over 1000°C. The production and raw material selection processes are strictly controlled to insure a uniform, high quality product that is structurally strong, stable, durable and inert, yet also lightweight and insulative.

ESCS gives designers greater flexibility in creating solutions to meet the challenges of dead load, terrain, seismic conditions, construction schedules and budgets in today's marketplace.

High Performance Concrete Masonry

world2.jpg (3084 bytes)ESCS concrete masonry units are up to 40% lighter than traditional masonry units. This lighter weight results in increased mason productivity, lower construction costs and reduced injuries. ESCS masonry also provides superior insulation by combining high R-values with thermal mass and low thermal bridging. In addition, it offers superior fire resistance, effective sound absorption, excellent seismic performance, low shrinkage and high strain capacity.

Asphalt Pavement

world4.jpg (2514 bytes)When bonded to asphalt, ESCS creates an advanced road surface that is safer, more economical and longer lasting than conventional aggregates. Wet or dry, road surfaces of ESCS aggregate provide superior skid resistance that is maintained throughout the surface life, because ESCS does not polish as it wears.

Use of ESCS affords shipping and handling cost advantages to the contractor, as well as virtually eliminating damage to windshields, headlights, and paint caused by "flying" stones, thus avoiding costly insurance claims and motorist complaints.

Structural Concrete

world8.jpg (1484 bytes)ESCS structural lightweight concrete world6.jpg (2361 bytes)solves weight and durability problems in buildings and exposed structures. ESCS concrete has strengths comparable to normalweight concrete, yet is typically 25% to 35% lighter. ESCS offers design flexibility and substantial cost savings by providing less dead load, improved seismic structural response, longer spans, better fire ratings, thinner sections, decreased story height, smaller size structural members, less reinforcing steel, and lower foundation costs.

Precast elements have reduced transportation and placement costs. The excellent durability performance of ESCS is a result of the ceramic nature of the aggregate, and its exceptional bond to and elastic compatibility with the cementitious matrix.


world9.jpg (2763 bytes)ESCS compacted fills are approximately half the weight of common fills. This advantage, coupled with its high internal friction angle, can also reduce lateral forces by more than one-half. It has been effectively used to solve numerous geotechnical engineering problems and to convert unstable soil into usable land. ESCS also provides permanent insulation around water and steam lines, and other thermally sensitive elements. ESCS is a reliable, economical geotechnical solution.


ESCS is environmentally friendly. It is non-toxic, odorless, 100% inert, and completely inorganic. ESCS will not compress, degrade, decompose, or react with agricultural or horticultural chemicals. It acts as an insulator in the soil mixture and protects plants from rapid temperature extremes. ESCS retains a high percentage of its weight in absorbed water and waterborne nutrients, making it an excellent buffer. ESCS is user friendly because it is lightweight, inert, pH adjustable, easy to handle, economical and readily available.

Specialty Concrete & Miscellaneous Uses

The superior qualities of ESCS are effective and economical in many other applications. Examples include wood floor topping, bagged concrete mix, cement wallboard, artificial stone, refractory, roof tile, traction grit, grog, insulating fill and many, many more.

Expanded shale, clay and slate aggregate, as manufactured by the rotary kiln process (originally developed in 1908 and patented in 1918 as Haydite), is available throughout the world.