Construction Mate
Washington, DC 20549

________________________________________

FORM 11-K

Full title of the Plan)

VULCAN MATERIALS COMPANY
(Name of issuer of the securities held pursuant to the Plan)

Exhibit 23(a)

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333-147449 on Form S-8 of our reportdated June 16, 2020 relating to the financial statements of Vulcan Materials Company CMG Hourly 401(k) Planappearing in this Annual Report on Form 11-K for the year ended December 31, 2019.

/s/ DELOITTE & TOUCHE LLP

Birmingham, Alabama

June 16, 2020

Exhibit 23(a)