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__________ method is used to restore slab or pavement which has settled.(a) Vibroflotation(b) Freezing(c) Chemical consolidation(d) Cement groutingI have been asked this question in an interview for job.My doubt stems from Underpinning and its Types in section Scaffolding, Shoring and Underpinning of Construction & Building Materials

Answer»

Correct choice is (d) CEMENT grouting

Easy explanation: The OPERATION of Cement grouting is simple. The HOLES are drilled in a slab and then cement grout is forced under pressure through these holes. The pressure is maintained until the cement grout has set.



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