The phrase "acted as a base" is correct and usable in written English.
It can be used to describe a function or role that something plays as a foundation or starting point for further actions or developments.
Example: "The research facility acted as a base for numerous scientific experiments and collaborations."
Alternatives: "served as a foundation" or "functioned as a starting point."
As well as assisting individual members of the West Norwood community with various DIY jobs, Library of Things acted as a base for other community projects to flourish – including other Open Works projects (when the Bzz Garage, see below, needed 20 shovels for a planting day one weekend, they were quickly sourced and lent out by the Library).
The town has acted as a base for cave-visiting for the past few years, with numbers swelling after the 2011 opening of the easily accessible Paradise Cave, popular with Vietnamese tourists as it can be reached by boat with no trekking required.
Krak des Chevaliers acted as a base for expeditions to Hama in 1230 and 1233 after the amir refused to pay tribute.
About two thirds of projects provided clinical and health promotion services in a primary health care or STI clinic setting, which then acted as a base for associated outreach.
Literacy acts as a base, enabling populations to understand medicine labeling, access healthcare, and engage with public health programmes.
It acts as a base for the US military, a watchdog on Israeli actions and a prospective member of the EU.
Isis has made inroads in Libya, which is, according to some reports, likely to act as a base for the organisation if it is forced out of Syria and Iraq.
Aluminum may act as a base to form salts with acids or as a weak acid to form salts with strong alkalies.
It can act as an acid, it can act as a base, with a pinch of salt it is the solution in which the cell's thousands of chemical reactions take place.
Meanwhile a serving dish acts as a base station into which you can slot your ever-present iPod or expensive two-box CD player if you want a better sound.
The US – which became the first country to put humans on the moon half a century ago – plans to launch a mini-outpost into lunar orbit to act as a base for manned missions to the moon and, eventually, Mars.
