The phrase "as fortification" is correct and usable in written English.
It can be used in contexts where you are referring to something that serves as a means of strengthening or protection, often in a metaphorical sense.
Example: "The additional funding was provided as fortification for the struggling project, ensuring its success."
Alternatives: "as reinforcement" or "as support".
His university salary could not cover all his expenses, and he therefore took in well-to-do boarding students whom he tutored privately in such subjects as fortification.
He approached Dalton as a favour to a friend, Willie Alison of the Evening Standard, whose editor wanted to know what tipple Dalton would be drinking as fortification during the budget speech.
The attacks were preceded by reversible visual symptoms presenting as fortification spectrum and ipsilateral cheiro-oral paresthesia (Cases B and C only), that lasted for 15 40 min.
Such results suggest that measures to increase mineral nutrients in soybean grain (such as fortification) were related to alterations of Pphy and β-carotene.
Working solutions of the pesticide standards for use as fortification standards in the procedural recovery process, and as calibration standards in the instrument calibration were freshly prepared through the dilution of an appropriate aliquot of the stock solutions with ethyl acetate.
In Africa, particularly, thought must be directed to issues such as fortification and expanding the nutritional benefits of certain legume and grains, and the methodology required to preserve and source local products and safeguard against food waste.
These walls of stone and timber were once thought to have been built as fortifications.
I suggested that most of the underground rooms might have been used principally for protection against bombs, and not as fortifications.
In the four centuries after the collapse of the empire, they were used as stone quarries, and the remains were sometimes used as fortifications.
Restoration work in the 20th century indicated that some of the churches may have been used originally as fortifications and royal residences.
By the 16th century, however, keeps were slowly falling out of fashion as fortifications and residences.
