The European Commission has extended the deadline for its decision on whether to clear or block the deal from 5 September to 12 September 2014.

A source told Reuters earlier this month that the Commission had objected to the deal after a preliminary review showed that it would significantly reduce competition in certain parts of Spain.

Cemex had submitted its concessions on Monday, the EU watchdog said on its website, without providing details in line with its policy.

It has been suggested that objections are based on the impact on competition in parts of Spain.