Company divests some quarries to gain DOJ approval of $900-million purchase of Aggregates USA.

D.C. Circuit turns down challenges from construction, other industry organizations.

But there are fears that materials price scalation and rising wages may cut into profits

California-based Oracle Corp. on Dec. 17 announced that it has entered into an agreement to buy Melbourne, Australia-based Aconex Ltd., a company that offers a cloud-based system for managing construction-team collaboration, for $7.80 per share in cash.