New Jersey

Department of Transportation

Standard Specifications

for Road and Bridge Construction

2007

NJDOT A-1 – Mortar-Making Properties of Fine Aggregate

1. Scope. This test method is used to determine the mortar-making properties of fine aggregate by tensile strength at the age of 7 days when compared to Standard Ottawa mortar.
   
   
2. Apparatus. Use apparatus as required in AASHTO T 132 and AASHTO T 162.
   
   
3. Procedure. Perform the following steps:
   
   
   1. Prepare Standard Ottawa mortar according to AASHTO T 162 and test according to AASHTO T 132.
   2. Using the fine aggregate sample, prepare the mortar according to AASHTO T 162 and test according to AASHTO T 132. Replace the Standard Ottawa sand with the same weight of fine aggregate sample and use sufficient mixing water to produce the same consistency as obtained with the Standard Ottawa mortar.
   
   
4. Report. Report the strength of the fine aggregate sample as a percentage of the Standard Ottawa mortar at 7 days.