Question $2$

$[20/100$ marks$]$

$(1)$ Describe the Marshall Method procedure. $[10/20]$

$(2)$ The mix design is to determine an optimum blend of different components that will satisfy the requirements of the given specifications. Describe some general guidelines for the following situations when the mix design does not satisfy all the requirements.

a$)$ Low Voids and Low Stability $[5/20]$

b$)$ High Voids and Satisfactory Stability $[5/20]$