Guidelines for Crumb Rubber Infill Used in Synthetic Turf ...



Guidelines for Crumb Rubber Infill Used in Synthetic Turf Fields



Guidelines for Crumb Rubber Infill Used in Synthetic Turf Fields

Printed October 2010 Revised October 23, 2014 Copyright ? 2010 by the Synthetic Turf Council 9 Newport Drive, Suite 200

Forest Hill, MD 21050

No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording or any information storage or retrieval system now known or to be invented, without permission in writing from the Synthetic Turf Council, except by a reviewer who wishes to quote brief passages in a review written for inclusion in a magazine, newspaper or broadcast. The Synthetic Turf Council is a non-profit, educational organization and possesses all rights pertaining to this publication.

Table of Contents

Purpose and Objectives General Characteristics Processing Standards Certification Compliance Packaging and Pallets Field Quality Testing and Sampling Standard Format MSDS About the Synthetic Turf Council



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Introduction

Purpose

To provide producers, customers and the public with an understanding of what CRI is and how the industry manages its safety, purity and quality.

Objectives

Clear standards on origin and composition of CRI Clear standards on cleanliness and purity of CRI Guidance on testing, sampling and packaging of CRI

STC? October 2010, rev. 10/23/2014

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General Characteristics of Crumb Rubber Infill (CRI)

Effective January 1, 2011:

The CRI used in artificial turf fields shall be derived from used whole vulcanized automobile, SUV, and truck tires (DOT tires for over the road). Buffings, bladders and tubes shall not be used as feedstock for CRI.

The CRI shall have a specific gravity range from 1.1 minimum to 1.2 maximum grams per cubic centimeter as determined by ASTM D 297 (including any modifications made by ASTM in the future).

The CRI shall have an ash content of between 5 and 15% as determined by ASTM D 297 (including any modifications made by ASTM in the future).

CRI made after Jan 1, 2011 shall not contain more than .01% liberated fiber (mathematically expressed as 0.0001) (no more than 0.2 lbs. per ton, which is 3.2 ounces of fiber per 2,000 lb. supersack which is approximately 25 lbs. of fiber per average field) tested per ASTM D 5603. The liberated fiber remaining in the CRI shall be free flowing and not agglomerated into clumps of fiber as received at the job site. CRI made before Jan 1, 2011 shall contain no more than 0.05% liberated fiber. All CRI sold after 12/31/11 must meet the 0.01% standard.

The CRI shall be dry and free flowing.

Sieve/gradation specification shall be agreed upon between customer and producer.

STC? October 2010, rev. 10/23/2014

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