Evaluation of the specification for flat and elongated particles for use in hot mix asphalt in Connecticut.

Zinke, Scott; Mahoney, James; Morison, Kelly; Clement, Stephen

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Evaluation of the specification for flat and elongated particles for use in hot mix asphalt in Connecticut.

2014-04-01
By Zinke, Scott ; Mahoney, James ; Morison, Kelly

File Language:

English

Details

Creators:

Zinke, Scott ; Mahoney, James ; Morison, Kelly ; Clement, Stephen
Corporate Creators:

Connecticut Transportation Institute
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

CT-2305-F-13-10
Resource Type:

Tech Report
Geographical Coverage:

Connecticut
Corporate Publisher:

Connecticut. Dept. of Transportation
Abstract:

This research was conducted to determine if the specification for flat and elongated aggregates ; for use in Hot-Mix Asphalt (HMA) in Connecticut can be reasonably achieved. Currently, the ; ConnDOT specification allows for no more than 10 percent flat and elongated particles utilizing a ; 3:1 ratio. It has been speculated that this specification may not be achievable by most HMA ; producers in Connecticut. The research team evaluated specifications from numerous regional ; state agencies for comparison with the ConnDOT specification. The research team also sampled ; aggregates from 15 sources which produce HMA for ConnDOT. 3/8-inch and 1/2-inch aggregates ; were sampled from each source, and flat and elongated tests were conducted on both size ; aggregates from all 15 sources. This totaled 30 aggregate samples tested from which only six ; passed the 10 percent maximum at the 3:1 ratio. Recommendations are made to change the ; specification to reflect achievable percentages of aggregates which are not flat and elongated. It ; is the opinion of the research team that this percentage should be not more than 10 percent flat ; and elongated particles by weight utilizing a 5:1 caliper ratio, ASTM D4791, Method B.
Format:

PDF
Funding:

SPR-2305
Download URL:

https://rosap.ntl.bts.gov/view/dot/27715/dot_27715_DS1.pdf
File Type:

[PDF - 399.78 KB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:45878ac0ad63a94593fcbb90295ed245bcafe87d56d677da0e1977f813f2d5e9

File Language:

English

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