ACiD COR­RO­SiOn

Kentish Express Ashford & District - - Danger Warnings -

Ac­cord­ing to the re­port, con­crete con­tains cal­cium hy­drox­ide, an al­ka­line chem­i­cal to pro­tect the steel en­force­ment.

The chem­i­cal is af­fected by car­bon diox­ide in the at­mos­phere.

This cre­ates a di­lute car­bolic acid and cor­ro­sion of the con­crete.

It is made worse by rain­wa­ter, ice and snow which causes the ex­posed steel to ex­pand and con­tract, which forces away the outer layer of con­crete in a process called spalling.

Scaf­fold­ing sur­rounds Ash­ford Po­lice Sta­tion to pro­tect peo­ple from fall­ing con­crete de­bris from the cladding.

Newspapers in English

Newspapers from UK

© PressReader. All rights reserved.