CONCRETE PROPERTIES AND TESTING

• structural material consisting of a hard, chemically inert particulate substance known as aggregate, that is bonded together by cement and water

  Concrete
• characterized by the type of aggregate or cement used, by the specific quality it manifests, or by the methods used to produce it

  Concrete
• The character of the concrete is largely determined by...

  water-to-cement ratio
• (True or False) The lower the water content, the stronger the concrete.

  True
• (True or False) Concrete is high in compression, but weak in tension.

  True
• (Identification) Concrete Tensile Strength is just 8%-_% of its compressive strength.

  14
• (Identification) Due to tensile stress, this is develop even at the early stage of the loading.

  Flexure cracks
• Step 1 in material and preparation for concrete

  Site work