What are re­ac­tive soils:

Central and North Burnett Times - - NEWS -

Re­ac­tive soils are clay-based soils which swell on wet­ting and con­tract on dry­ing.

Some soils have a greater ten­dency to swell and con­tract than oth­ers. The soil type is de­ter­mined by a test. Below-ground drains can be put in to al­low for soil move­ment. With­out a drain, the soil can eas­ily cause crack­ing in ce­ment by the swelling and con­tract­ing move­ment. Source: Aus­tralian Build­ing In­spec­tion Ser­vices.

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