Turkey is trying to control the flow of refugees from Syria and the unregulated trade and traffic across the open border by constructing a "portable" wall near Kusakli, a border village under the jurisdiction of the nearby town of Reyhanlı, in the Hatay province. No biggie, though, this wall's just 1200m. Really more of an installation.
The AA photo above shows workers installing the prefab concrete segments with a crane. They look like jacked up Jersey Barriers.
As this DHA photo shows, they are jacked up Jersey Barriers, 30cm thick, and 3m square. Each weighs 9 tons. From their popular use in the Iraq and Afghanistan wars, the US military's technical term for a jacked up Jersey Barrier may be a Texas Barrier [3.7m] or an Alaska Barrier [6m], or a Bremer Wall, after Paul Bremer, who did so much to create the demand for them during the early days of the occupation.
All these US-style barriers, though, are thinner, rectangular, more 2001 monolith-shaped. Their design heritage traces back to the model for an instant wall along the US-Mexico border that congressman/earthworks artist Steve King (R-IA) exhibited in 2006. And to the decidedly non-temporary, non-portable wall Israel built in the occupied West Bank.
Turkey apparently does not want to use Israeli-style oblong walls, so they go with the square. A little heavier, but fewer lifts. They're apparently installing the wall at around 75 segments/day.
I looked Kusakli up on Google Maps, and the awesome, gridded Benday dots of the olive orchards in the surrounding landscape are suddenly the second most interesting feature. Because there is this unusual Pentagon overlay around the town. What even is that? There's no way it's the wall. Or the demarcation for a wall, since the wall's only 1/8th built. Right? That'd turn Kusakli into West Berlin without limiting the flow of Syrians anywhere except in this tiny village. So it's something else.