Cement: Difference between revisions

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# Calcium hydroxide (lime) : 20 to 25%
# Voids : 5 to 6% (in the form of capillary voids and entrapped and entrained air)
 
== References ==
# The Pennsylvania State University Department of Civil and Environmental Engineering and Instructional Systems "[https://www.engr.psu.edu/ce/courses/ce584/concrete/ Concrete Clinic] - [https://www.engr.psu.edu/ce/courses/ce584/concrete/library/construction/curing/Hydration.htm Hydration of Portland Cement]"