結果 : why concrete is used
8:11

Why Concrete Needs Reinforcement

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9:11

What is Concrete?

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4:37

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8:04

The history of concrete

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The Difference Between Concrete and Cement

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7:37

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1:57

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13:22

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4:46

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3:06

The Differences Between Plaster, Mortar & Concrete Mixes

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7:04

Failure of concrete anchors explained

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11:14

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12:45

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13:43

Block vs Concrete

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5:41

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3:20

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