chapter 3 rigid pavement - DOT On-Line Publications - Department ...
chapter 3 rigid pavement - DOT On-Line Publications - Department ...
chapter 3 rigid pavement - DOT On-Line Publications - Department ...
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1. Platerials<br />
FHWA TECHNICAL ADVISORY T 5086.17<br />
July 14, 1994<br />
ATTACHMENT 1<br />
CHECKLIST FOR<br />
PORTLAND CEMENT CONCRETE PLANT INSPECTION<br />
A. Cements<br />
etc.)<br />
and Mineral Admixtures<br />
(cement, fly ash,<br />
(1) Is evidence of cement or fly ash<br />
acceptability present (certification, test<br />
results)?<br />
(2) Are bins or silos tight and provide for free<br />
movement to discharge opening?<br />
(3) Are bins or silos periodically emptied to<br />
check for caking?<br />
(4) Plants should provide separate storage for<br />
each type of cement or mineral admixture<br />
being used. Are the materials being isolated<br />
to prevent intermingling or contamination?<br />
B. Aggregates<br />
.- -<br />
(1)<br />
(2)<br />
(3)<br />
(4)<br />
(5)<br />
Does the plant display evidence of source<br />
approval?<br />
Are aggregates stockpiled to prevent<br />
segregation and degradation? The preferred<br />
method of stockpiling is in layers. Cone<br />
shaped stockpiles will segregate.<br />
Are stockpiles adequately separated to<br />
prevent intermingling?<br />
Does the plant maintain separate storage bins<br />
or compartments for each size or type of<br />
aggregate? Are the aggregates tested for<br />
gradation and moisture content?<br />
What is the surface underneath stockpiles?<br />
Soil or paved? Are the stockpiles covered?<br />
3.10.25
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