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Learn 5 civil engineering concepts today
A fresh set every day. Short, practical, and written the way it actually matters on site.
Sunken Slab
A slab cast lower than the surrounding floor, usually in wet areas.
On siteIt hides the drainage run below finished floor level. Waterproofing the sunken portion is what actually matters.
Honeycombing
Voids left where mortar failed to fill between coarse aggregate.
On siteExposes reinforcement to air and moisture. Caused by poor compaction or congested bars.
Cube Test
Crushing cured cubes to confirm compressive strength.
On siteStandard at 7 and 28 days in India. The 7-day result is roughly two-thirds of the 28-day value.
Cover
The concrete thickness between the outermost steel and the exposed face.
On siteIt is the only thing protecting reinforcement from corrosion. Wrong cover blocks is the most common site defect.
Water–Cement Ratio
The mass of water divided by the mass of cement in a mix.
On siteLower it and strength rises but workability drops. It is the single strongest lever you have over concrete strength.
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