HydRocks is Permanent

HydRocks particles act like small sponges, full of small pores with internal storage. When the particles are exposed to water, moisture is absorbed into the internal storage sites. Unlike others HydRocks does not break down and need to be reapplied year after year. HydRocks is a permanent solution.

HydRocks Reduces Water Usage

HydRocks Soil Enhancement provides an excellent environment for healthy root structure. HydRocks retains as much as 35% of its weight in absorbed water and water-borne nutrients which are steadily released as the soil dries. These characteristics also help prevent soil cracking and crusting.

HydRocks Increases Plant Performance

The porous micro-surface texture and interior porous structure of HydRocks resist clogging and provide superior aeration that promotes growth of delicate, fine root systems. Problems of soil compaction are significantly reduced when HydRocks is properly proportioned within the soil. The soil remains resilient because moisture and air movement are not restricted. HydRocks provides the optimum conditions for fast, healthy plant growth.

Benefits of HydRocks®

FROM ARCOSA LIGHTWEIGHT

• HydRocks retains moisture during dry periods by holding as much as 35% of its weight in absorbed water and in return reducing water usage and runoff.

• HydRocks provides adequate drainage by introduction of permanent pore spaces keeping moisture and air movement unrestricted and drains faster than sand removing excess water from the surface.

• HydRocks provides increased nutrient holding capacity by increasing Cation Exchange Capacity (CEC).

• HydRocks permanent soil structure will not degrade or compress eliminating the need to reapply. HydRock is a permanent solution.

• HydRocks protects the environment by improving storm water filtration.

• Hydrocks applications on heavily used turf areas reduces wear on turf by protecting the crown of the plants, reducing compaction and keeping air spaces for the rootzone.

• Hydrocks provides optimum conditions for fast, healthy plant growth.

Low impact development techniques for managing stormwater

rely heavily on bioretention areas and rain gardens. Hydrocks®

allow for more efficient infiltration, less clogging of the media

and greater water holding capacity.

Improperly developed soils for sports fields and high-use areas

will struggle with issues from compacted turf. HydRocks® can

be incorporated into the soils to improve agronomic conditions

with added air/pore space at the root zone and less compaction.

About HydRocks® Bioretention & Rain Gardens

Sports Fields & High Traffic Areas

Ammending Clay Soils

When used at a rate of 25-30%, HydRocks® improve the infiltration

of clay soils and promote deeper water and oxygen storage for

healthier roots and plant materials. The environmental benefits

are improved stormwater filtering, less runoff and less wasted

irrigation. The beauty of HydRocks® is that they only require one

application for permanent results.

1112 E Copeland Rd Arlington, TX 76011, Tel: 1.800.581.3117

TEST METHOD PROPERTY TESTING RESULT

ASTM D-4254 Dry Loose Density (Minimum Density) 28.6 – 36.2 lb/ft³

ASTM D-4253 Dry Compacted Density (Maximum density) 37.5 – 43.16 lb/ft³

ASTM-E2399 Maximum Media Density 45.8 – 55.1 lb/ft³

ASTM D 698 Standard Proctor Density 35.9 – 36.9 lb/ft³

ASTM E2396 Water Permeability 36.3 – 43.7 lb/ft³

ASTM-C88 Soundness of Aggregate (Magnesium Sulfate) 1.3% – 1.9%

ASTM-C131 L.A. Abrasion (D Grading) 14%-22% Loss

ASTM-C29 Void Content (Shoveling Procedure) 47% - 48%

ASTM D4972 pH of Soil (Method A, pH Meter) 9.4 – 9.9

AASHTO T291 Chloride Content 6 - 70 mg/kg

AASHTO T290 Water-Soluble Sulfate Ion Content in Soil 288 - 2220 mg/kg

ASTM C25 Calcium Carbonate (CaCO3) equivalence (Wt.% Dry Basis) 1.53-2.04

ASTM F1647 Total Organic Matter, by loss on ignition (Wt.% Dry Basis) 0.22 - 0.29

ASTM-C136 Grain Size Distribution (Sieve Analysis) See Below

Custom Sizing: HydRocks® comes in a variety of

gradations that can be blended for custom conditions.

COARSE MEDIUM FINE

HydRocks® Testing Intermediates 3/8” x 3/16”

Percent Passing 3/8” Sieve 82.0%-89.0%Percent Passing 1/4” Sieve 2.2% - 8.1%Percent Passing #18 Sieve 0.7%-6.0%

* One Point Proctor in an as received moisture condition using 1/2 ft³ bucket with three layers, 25 blows each layer with D698 proctor hammer. As received moisture was determined to be 2.17% total

* Data on other gradations is available upon request

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