CIE 111: Civil Engineering Materials Laboratory Homework - Prelab: Concrete Mix
ID: 1712377 • Letter: C
Question
CIE 111: Civil Engineering Materials Laboratory Homework - Prelab: Concrete Mix Design Name Fall 2017 Group- For all calculations, show the formula, then the numbers with units and the solution. Use appropriate significant figures Define Bulk Specific Gravity (BSG) and Absorption Capacity (AC) in words (not formulas!) 1. 2. What is the typical BSG of Cement? Refer to the Mix design example in CIE110 notes 3. What do you think has a higher BSG, a fine or a coarse aggregate? Why? Select a desirable water cement ratio (wic ratio) for 4,000 psi concrete that is not air entrained. State the Table/Figure from your CIE 110 book. 4. 5. If we plan on using 0.5 cubic feet of water, how much cement (in pounds-lbs) would you use for your selected wie ratio above? You must know unit weight of water to solve this.Explanation / Answer
Bulk Specific Gravity:
It is the ratio of mass of unite volume of aggregates including voids to the mass of an equal volume distilled water at a standard temperature.
Absorption Capacity:
It is the ability of aggregate to absorb water when immersed in water for 24 hrs at standard temperature.