Evaluation of Otta Seal Surfacing for Low-Volume Roads in Iowa

Ceylan, Halil; Kim, Sunghwan; Zhang, Yang; Nahvi, Ali; Gushgari, Sharif Y.; Jahren, Charles T.; Gopalakrishnan, Kasthurirangan; Gransberg, Douglas D.; Arabzadeh, Ali; Iowa State University. Institute for Transportation

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Evaluation of Otta Seal Surfacing for Low-Volume Roads in Iowa

2018-06-01
By Ceylan, Halil ; Kim, Sunghwan ; Zhang, Yang ; ...

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English

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Details:

Creators:

Ceylan, Halil ; Kim, Sunghwan ; Zhang, Yang ; Nahvi, Ali ; Gushgari, Sharif Y. ; ... More +

Ceylan, Halil ; Kim, Sunghwan ; Zhang, Yang ; Nahvi, Ali ; Gushgari, Sharif Y. ; Jahren, Charles T. ; Gopalakrishnan, Kasthurirangan ; Gransberg, Douglas D. ; Arabzadeh, Ali Less -
Corporate Creators:

Iowa State University. Institute for Transportation
Corporate Contributors:

Iowa Highway Research Board ; Iowa. Dept. of Transportation

Iowa Highway Research Board ; Iowa. Dept. of Transportation Less -
Subject/TRT Terms:

[+]

Aggregate Aggregate Mixtures Asphalt Bituminous Concrete Pavements Bituminous Surface Treatment Demonstration Projects Economic Analysis Field Demonstration Low-volume Road Low Volume Roads Otta Seal Sealing Compounds
Publication/ Report Number:

IHRB Project TR-674
Resource Type:

Tech Report
Geographical Coverage:

Iowa
Corporate Publisher:

Iowa State University. Institute for Transportation
Abstract:

Low-volume roads represent a significant proportion of transportation infrastructure, and the cost of maintaining low-volume roads is quite high for secondary road departments. Traditional bituminous surface treatments (BSTS) for asphalt pavements require high-quality materials and specialized expertise, but Otta seal surfaces can be constructed using more economical local aggregates and regularly available equipment. To evaluate the feasibility of Otta seals as an alternative surface treatment on Iowa’s low-volume roads and gauge the cost-effectiveness and performance of Otta seals compared to BSTs, the first Otta seal construction project in Iowa was conducted using a double-layer Otta seal over a 6.4 km (4 mi) long existing asphalt pavement with cracks in Cherokee County during September 2017. This study focused on the general background of this construction project, the Otta seal design details, the Otta seal construction procedures, and the many investigative tests conducted before, during, and after construction. Multiple in situ investigations, including loose aggregate tests, dustometer tests, roughness tests, and visual appearance inspections, were conducted over different construction periods to evaluate the performance of this Otta seal constructed in Iowa. Economic analyses using Minnesota and Iowa as case study locations indicate that Otta seals could be more cost-effective than BSTs (i.e., than chip seals).
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:b83fd1ab15cc22c34978ee0464350a02afc2a694e65e647cdcbc617a028b7ee2
Download URL:

https://rosap.ntl.bts.gov/view/dot/36597/dot_36597_DS1.pdf
File Type:

TR-674__Tech_Brief_Otta_seals_for_low-vol_rds_t2.pdf

pdf

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