PERVIOUS CONCRETE

History of pervious concrete

Pervious concrete was first used in the 1800s in Europe.It became popular again in the 1920s for two story homes in Scotland and England. It became increasingly viable in Europe after the Second World War due to thescarcity of cement. It did not become as popular in the US until the 1970s.

Pervious Concrete:

PCPC is composed of portland cement, coarse aggregate, water, and admixtures. lack of fine aggregate causes the concrete to have a void structure.which allows liquids and air to pass through the concrete and into a sub-base

APPLICATIONS:SidewalksParking AreasResidential FlatworkDrainage AreasCourtyards

Should We Use Pervious Concrete:

• Green Building alternative suitable for many applications• Natural run-off allows rainwater to drain directly to sub-base• Reduced construction requirements for drainage structures• Reduced pollution prevents environmental damage

pervious concrete as a Best Management Practice (BMP), andbuilding owners and designers are realizing more efficientland utilization while acquiring LEED credits through the useof pervious concrete structures.

i. The addition of a small amount of sand will increase the Strength. water to cement ratio 0.28 to 0.40 with a Void content of 15 to 25 %

ii. This allowes proprerty owners to develop a large areas of available property at a lower cost

iii. Pervious concrete also naturally filters storm water and can reduce pollulant load in the streams,ponds and rivers

Pervious concrete consists of cement Cours aggregate and water with little

To no fine aggregate

Placing Pervious ConcreteJointing Pervious Concrete

Curing Pervious Concrete

Getting StartedPervious Concrete is a very design dependent mixture and should achieve a 15-25% air void structure.Aggregate gradation is one of the key elements of a successful project. The aggregate must be clean andappropriately graded. 3/8" ‘rounded gravel’ or limestone is typically used. Cement contents vary but generallyfall in the 500 – 650 lb/yd3 (300-385 kg/m3) range. Water content is kept as low as possible in order to maintainEuclid Chemical manufactures and suppliesvarious admixtures to aid in the production, placement, leveling, and curing of pervious concrete.

Typical Mix DesignMaterial lb/yd3 kg/m3Cement 600 356Coarse Aggregate 3/8 Limestone

2600 1543

Water 160 95w/cm 0.27 0.27Euclid Admixtures oz/cwt mL/100kgplastol5500 2.5 160

Eucon W.O. 4.0 260

Eucon ABS 8.0 520

Typical Concrete PropertiesPlastic Properties lb/ft3 kg/m3

Density 120-125 1900-2000

Voids Content 25-30%

Hardened Properties

psi MPa

7 day compressive strength

1500-2000 10-14

28 day compressive strength

1800-2900 12-20

28 day flexural strength

450-600 3-4

THAN “Q”