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Summer heat makes Bueng Kan road ‘explode’

By The Nation

 

 

Extremely high temperatures in Bueng Kan province have made a concrete road expand and “explode”.

 

Workers at a rubber plantation in Somsanuk district reported the explosion after noticing pieces of concrete strewn around.

Upon inspection, local officials found the road had developed a 5-metre deep crack and some pieces of concrete had apparently risen up to a metre high.

 

The road is now closed for reconstruction.

 

Boonserm Puangpet from the provincial Department of Highways said the ferrocement used to construct the road was completely waterproof and does not release moisture when exposed to heat. This makes the pressure build up inside and it eventually explodes.

 

Source: https://www.nationthailand.com/news/30386713

 

-- © Copyright The Nation Thailand 2020-04-24

 

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[sammieuk1]

As if there weren't enough dangers here ????

[daveAustin]

Explode = Rupture. Or could be a troll under there... enough of em about. 

[PETERTHEEATER]

For slabs such as this the recognised practice is to use quality mixed concrete (????) and make interval expansion joints.

 

In my Middle East working life I worked on a new build site on which a local cowboy contractor had built a one-way road in poured concrete with no expansion joints. The first 50 degree plus Summer temperature expanded the mass into cracked and raised loops so high that you could stoop and walk under.