Pervious Concrete Design

Instructor: Cris Koutsougeras

Advisor: Mohamed Zeidan

By: Alex Rodney

October 8, 2014

What is Pervious Concrete?

Pervious concrete is a special type of porous concrete that allows water from precipitation and other water sources to flow directly through the material. This reduces runoff and allows for the possibility for groundwater recharge.

Focal Point

The focus of this project is to find ways to lower the cost of pervious concrete using recycled concrete and improve the compressive strength.

Mixture

Pervious Concrete mixtures consist of rough large aggregate, sand, water, and air. Additives and recycled concrete will be added into the mixtures to create a porous, more cost effective concrete.

The admixtures that I will be using will be VMAR VSC-500 along with Darex AEA.

Mix Design

The mix design that I will be starting out with will be from Ascension Ready Mix Concrete Company.

Mix Additives

VMAR VSC-500 is a concrete mixture additive that enables the production of superior quality pervious concrete. I will be adding this with recycled concrete and testing the results of its compressive strength and permeability.

Mix Additives

Darex AEA is the next additive I will be using. This material increases the air entrainment to concrete.

Testing

All testing will be done through Ascension Ready Mix’s own testing lab at their facilities.

Supplies

All of the supplies I will be using will becoming from SELU or from Ascension Ready Mix.

Darex AEA

VMAR VSC-500

Sand

Fly Ash

Recycled Concrete

Pea Gravel (course aggregate)

Water

Timeline/Deliverables

Timeline/Deliverables:

September 2014: Research pervious concrete mix designs

October 2014: Secure testing lab to test cylinders along with materials needed

October 2014: Gather materials / Adjust mix design accordingly

November 2014: Design mixture and prepare trial mix

December 2014: Mix and pour 1st set testing cylinders

January 2015: Conduct tests at Ascension Ready Mix lab

February 2015: Readjust mix design accordingly

March – April 2015: Perform cost analysis and prepare final report