210R-93: Erosion of Concrete in Hydraulic Structures (Reapproved 2008)

210R-93: Erosion of Concrete in Hydraulic Structures (Reapproved 2008)

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Description

This report outlines the causes, control, maintenance, and repair of erosion in hydraulic structures. Such erosion occurs from three major causes: caviration, abrasion, and chemical attack. Design parameters, materials selection and quality,environmental factors, and other issues affecting the performance of concrete are discussed. Evidence exists to suggest that given the operating characteristics and conditions to which a hydraulic structure will be subjected, it can be designed to mitigate future erosion of the concrete. However, operational factors change or are not clearly known and hence erosion of concrete surfaces occurs and repairs must follow. This report briefly treats the subject of concrete erosion and repair and provides numerous references to detailed treatment of the subject.

Keywords: abrasion; abrasion resistance; aeration; cavitation; chemical attack concrete dams; concrete pipes; corrosion; corrosion resistance; deterioration; Eros ion by chemical attack, erosion; grinding (material removal): high-strength concretes; hydraulic structures; maintenance; penstocks; pipe linings; pipes (tubes); pitting polymer concrete; renovating; repairs; spillways; tolerances (mechanics); wear.

 

Document Details

Author: ACI Committee 210

Publication Year: 2002

Pages: 24

ISBN: 9780870314292

Categories: Hydraulic Structures

Formats: PDF

This document is Historical

Table of Contents

PART 1--CAUSES OF EROSION

Chapter 1--Introduction

Chapter 2--Erosion by cavitation

2.1--Mechanism of cavitation

2.2--Cavitation index

2.3--Cavitation damage

Chapter 3--Erosion by abrasion

3.1--General

3.2--Stilling basin damage

3.3--Navigation lock damage

3.4--Tunnel lining damage

Chapter 4--Erosion by chemical attack

4.1--Sources of chemical attack

4.2--Erosion by mineral-free water

4.3--Erosion by miscellaneous causes

PART 2--CONTROL OF EROSION

Chapter 5--Control of cavitation erosion

5.1--Hydraulic design principles

5.2--Cavitation indexes for damage and construction tolerances

5.3--Using aeration to control damage

5.4--Fatigue caused by vibration

5.5--Materials

5.6--Materials testing

5.7--Construction practices

Chapter 6--Control of abrasion erosion

6.1--Hydraulic considerations

6.2--Material evaluation

6.3--Materials

Chapter 7--Control of erosion by chemical attack

7.1--General

7.2--Control of erosion by mineral-free water

7.3--Control of erosion from bacterial action

7.4--Control of erosion by miscellaneous chemical causes

PART 3--MAINTENANCE AND REPAIR OF EROSION

Chapter 8--Periodic inspections and corrective action

8.1--General

8.2--Inspection program

8.3--Inspection procedures

8.4--Reporting and evaluation

Chapter 9--Repair methods and materials

9.1--Design considerations

9.2--Methods and materials

Chapter 10--References

10.1--Specified and/or recommended references

10.2--Citied references

Appendix--Notation

ERRATA INFO

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