Pervious Concrete Desgin Instructor: Cris Koutsougeras Advisor: Mohamed Zeidan By: Alex Rodney December 5, 2014 ET 493.

Pervious Concrete Desgin

Instructor: Cris Koutsougeras

Advisor: Mohamed Zeidan

By: Alex Rodney

December 5, 2014

ET 493

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 improve the compressive strength of pervious concrete and lower the cost using recycled concrete.

Mixture Pervious Concrete

mixtures consist of rough large aggregate, sand, water, and air. Additives will be mixed into the mixtures to create a porous more cost efficient 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 add to recycled concrete to see what the permeability and compressive strength is.

Mix Additives

Nano Silica is a microscopic form of silica (SiO2) that can be introduced into cement to improve the strength of concrete by filling in microscopic voids in the aggregate and the cementious materials. It helps prevent Alkali Silica Reactivity, which is the reason that concrete cracks.

Electron Microscope view of nano treated 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

Nano Silica

Sand

Fly Ash

Recycled Concrete

Pea Gravel (course aggregate)

Water

Mix Design #1

Mix Design #1 contains recycled concrete with VMAR VSC 500 and Darex to improve permiability and costs.

Mix design #2

Mix Design # 2 contains recycled concrete to cut costs and nano scilica to improve the strength of the cementious material.

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

Any Questions?