successful pervious concrete installations wsu lid

Successful Pervious Concrete Installations WSU LID Technical Workshop

WSU LID Technical Workshop - Presented by Michael Bledsoe - www.perviouscrete.com 1 04/25/12

Presented by: Michael Bledsoe, President Pervious Concrete, Inc.



Introduction

Introduction



Introduction

Desired End Result



Introduction

Desired End Result

Play Video



Introduction

Desired End Result

How It Works

Imagine: Bowl of Marbles Glass Vase – Hole in Bottom Super Glue on Marbles Dump Marbles in Vase Super Glue Dries Pour in Water



Introduction

Desired End Result

How It Works

Action / Execution Look over my shoulder Examine Key Steps Tour Some Sites



Introduction

Desired End Result

How It Works

Action / Execution

Central Concept Manage the Marbles Manage the Glue



Pre-Installation

New Section



Pre-Installation

Quality Installer



Pre-Installation

Quality Installer

Experience Prior Success



Pre-Installation

Quality Installer

Specs

Strongly Recommended



Pre-Installation

Quality Installer

Specs

Mix Design

Critical Success Factor +/- 40% Voids – Aggregate +/- 20% Voids – Finished Concrete Enough water to hydrate +/- .30 w/c Not too much to slide off aggregate Admixtures to improve performance



Pre-Installation

Quality Installer

Specs

Mix Design

Depth provides Strength ACI 522.1-08 allows only 1/4 in. Error Depth



Pre-Installation

Quality Installer

Specs

Mix Design

Grade of Aggregate Base is Critical Crushed, not Round - Ruts

Depth

Aggregate Base



Pre-Installation

Quality Installer

Specs

Mix Design

ACI 522.1-08 - not exceed 20 ft - Larger not > 125% Smaller

Depth

Aggregate Base

Jointing Plan



Pre-Installation

Quality Installer

Specs

Mix Design

ACI 522.1-08 - 0% below top grade

Depth

Aggregate Base

Jointing Plan

Forming



Pre-Installation

Quality Installer

Specs

Mix Design

Desirable if Installer has success history with mix supplier On site representative Details – Truck wash/out & spin

Depth

Aggregate Base

Jointing Plan

Forming

Mix Teamwork



Installation

New Section



Installation

Test Panel Required by ACI 522.1-08 Protection from BIG Problems Becomes Acceptance Test Standard Site +/- 5% of Test Panel



Installation

Test Panel Measures Plastic Unit Weight +/- 5 lbs / cuft of Design Unit Weight

ASTM C138



Installation

Test Panel Chute Pour is Best - Fastest - Least Time Exposed to Air TeleBelt is Possible Pumping is Not Possible

ASTM C138

Pour from Chute



Installation

Test Panel TeleBelt is Possible

ASTM C138

Pour from Chute



Installation

Test Panel

Just a little higher than final grade

ASTM C138

Pour from Chute

Shovel to Location



Installation

Test Panel

Preferred Device is Hydraulic Powered Roller Screed

ASTM C138

Pour from Chute

Shovel to Location

Screed to Grade



Installation

Test Panel


ASTM C138

Pour from Chute

Shovel to Location

Screed to Grade



Installation

Test Panel


ASTM C138

Pour from Chute

Shovel to Location

Screed to Grade

Bunyan Roller Screed Hydraulic Pump



Installation

Test Panel

Smaller Roller Roll Perpendicular Flattens Grade Smoothes Surface

ASTM C138

Pour from Chute

Shovel to Location

Screed to Grade

Cross Roll



Installation

Test Panel

Tooled Joints – “Pizza Cutter

ASTM C138

Pour from Chute

Shovel to Location

Screed to Grade

Cross Roll

Jointing



Installation

Test Panel

Attractive Tooled Joints

ASTM C138

Pour from Chute

Shovel to Location

Screed to Grade

Cross Roll

Jointing



Installation

Test Panel Wet Down Aggregate Base - Always Mist Over/Around Pour Site - Hot / Windy Days

ASTM C138

Pour from Chute

Shovel to Location

Screed to Grade

Cross Roll

Jointing

Moisture



Installation

Test Panel

Within 20 min or less Traps Water for Hydration

ASTM C138

Pour from Chute

Shovel to Location

Screed to Grade

Cross Roll

Jointing

Moisture

Visqueen Cover



Installation

Test Panel


ASTM C138

Pour from Chute

Shovel to Location

Screed to Grade

Cross Roll

Jointing

Moisture

Visqueen Cover



Post-Installation

New Section



Post-Installation

Protect 7 Days Minimum – Cars, Light Trucks 14+ Days - Heavy Trucks - Heavy Traffic Loads



Post-Installation

Protect Remove Dispose Sweep Off Clean Up

Remove Visqueen



Post-Installation

Protect Compare to Test Panel Using Core Samples Depth – Not Under 1/4 in. Density - +/- 5% of Test Panel Strength – No Accepted Tests Infiltration – Good Idea Not in ACI 522.1-08

Remove Visqueen

Testing, Acceptance



Post-Installation

Protect Construction Mess Landscaping Run-Off

Remove Visqueen

Testing, Acceptance

Protect From Debris



Post-Installation

Protect Protect - This is best Vacuum - This process works best Sweep - Good for rocks - Good for solids Very Site Dependent - Some need little - Some need more

Remove Visqueen

Testing, Acceptance

Protect From Debris

Maintenance



Post-Installation

Protect

Vacuum – New Products Coming

Remove Visqueen

Testing, Acceptance

Protect From Debris

Maintenance



Contact

Michael Bledsoe, President Pervious Concrete, Inc. 206-940-8900 [email protected] www.perviouscrete.com

http://www.perviouscrete.com/



The Future

New Section



The Future

Pervmasters – Las Vegas

Infiltration Rate Test 1701

4 inches depth 16 hours cure 100 degrees



The Future


Presentations To the Group



The Future





The Future




The Future


Compression Testing (Unapproved)

Inverted Slump Cone Leak Down



The Future


Stone Fracture From Compression Tip of Finger



The Future


Nestor Buen Unna EcoCreto Mexico City



The Future


Mr. Wong – China 1,500,000 sqft In Single Project Olympic Games



The Future




Contact

Michael Bledsoe, President Pervious Concrete, Inc. 206-940-8900 [email protected] www.perviouscrete.com

http://www.perviouscrete.com/

successful pervious concrete installations wsu lid

Documents