Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of Aegion Corporation of our report dated March 1, 2018, relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in Aegion Corporation’s Annual Report on Form 10-K for the year ended December 31, 2017.
/s/ PricewaterhouseCoopers LLP
PricewaterhouseCoopers LLP
St. Louis, Missouri
May 3, 2018