Financial impact of fines in the unbound pavement layers.

Liu, Jenny; Zhang, Xiong; Chamberlain, Andrew; Li, Lin; University of Alaska Fairbanks. Dept. of Civil and Environmental Engineering

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Financial impact of fines in the unbound pavement layers.

2014-10-01
By Liu, Jenny ; Zhang, Xiong ; Chamberlain, Andrew ; ...

[PDF-2.90 MB]

English

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Details:

Creators:

Liu, Jenny ; Zhang, Xiong ; Chamberlain, Andrew ; Li, Lin

Liu, Jenny ; Zhang, Xiong ; Chamberlain, Andrew ; Li, Lin Less -
Corporate Creators:

University of Alaska Fairbanks. Dept. of Civil and Environmental Engineering
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:

[+]

Aggregates Base Course (Pavements) Fines (Materials) Freeze Thaw Tests Frost Heaving Granular Bases Modulus Of Resilience Moisture Content Pavement Layers
Publication/ Report Number:

DOT&PF Report Number 4000105 ; INE/AUTC 14.15

DOT&PF Report Number 4000105 ; INE/AUTC 14.15 Less -
Resource Type:

Tech Report
Geographical Coverage:

Alaska
Corporate Publisher:

Alaska University Transportation Center ; Alaska. Dept. of Transportation and Public Facilities. Research, Development and Technology Transfer

Alaska University Transportation Center ; Alaska. Dept. of Transportation and Public Facilities. Research, Development and Technology Transfer Less -
Abstract:

This study continued the research effort on evaluating the resilient behavior of D-1 base course materials when there is limited water

access during freezing. D-1 material from the Northern region of Alaska was used, and a closed system was adopted for the specimen

preparation process to represent an extreme natural freezing process condition in which no water intake occurs during freezing. Resilient

moduli (MR) of soil specimens were measured and influencing factors investigated included four fines contents ranging from 6% to

12%, three moisture contents ranging from 3.3% to 6%, three temperature gradients (low, medium, and high) during the freezing

process, and a series of temperatures ranging from -5°C to 20°C.

The study confirmed several findings from previous study (Li et al. 2010). In addition, it was found that temperature gradient and

stress state are important influencing factors. In a closed system, for D-1 materials with different fines contents, soils tended to increase

in MR after a freeze-thaw cycle, in some cases significantly, due to soil structure change during the freezing process. MR models were

then calibrated to predict the resilient behavior of D-1 material under different temperature, moisture, and fines contents and under both

non-frozen and frozen conditions.
Format:

PDF
Collection(s):

University Transportation Centers US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:008cdc93d8aba554f47c40e9cb2d9fe8d871e7cb2af07addd514abf756b56c28
Download URL:

https://rosap.ntl.bts.gov/view/dot/28201/dot_28201_DS1.pdf
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Financial impact of fines in the unbound pavement layers.

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