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Traffic and Highway Engineering

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter18: Bituminous Materials

Section: Chapter Questions

Problem 4P

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Question

The lime dose necessary (mg/L as CaO) to soften this water if the lime is 90% pure is
most nearly? You may assume excess lime needed is 20 mg/L as CaCO3
Concentration (mg/L as
СаСОз)
Compound
CO2
5
Ca2+
Mg2+
HCO3
300
30
250
SO42-
171 mg/L
80
159 mg/L
142 mg/L
283 mg/L

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