Friction Angles of Open-Graded Aggregates from Large-Scale Direct Shear Testing : TechBrief

Nicks, Jennifer; United States. Federal Highway Administration

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

Advanced Search
Custom Query

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.

i

Friction Angles of Open-Graded Aggregates from Large-Scale Direct Shear Testing : TechBrief

2013-07-08
By Nicks, Jennifer

English

Details You May Also Like

Details:

Creators:

Nicks, Jennifer
Corporate Creators:

United States. Federal Highway Administration
Subject/TRT Terms:

[+]

American Association Of State Highway And Transportation Officials Dilation Direct Shear Tests Friction Laboratory Tests Open Graded Aggregates
Publication/ Report Number:

FHWA-HRT-13-068
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

United States. Federal Highway Administration
Abstract:

State and local transportation agencies frequently use opengraded aggregates for wall, roadway, and bridge construction. The primary advantages of using this type of material in wall and abutment applications are ease of constructability, lighter in-place density than well-graded materials, very low fine content, free-draining characteristics, and simpler quality assurance testing, using a method specification for field density. The American Association of State Highway and Transportation Officials (AASHTO) classifies open-graded aggregates according to the M43 gradation based on standard sizes for processed aggregates.(1) Despite common use of these aggregates, their strength characteristics have not been systematically measured or used in design. Instead, engineers frequently use a default friction angle of 34 degrees, leading to potential conservatism in retaining wall and foundation design. The primary purpose of this TechBrief is to present research results on the strength properties of standard open aggregates tested in a large-scale direct shear (LSDS) device to improve the state of practice for the design of structures using these materials.
Format:

PDF
Collection(s):

Federal Highway Administration
Main Document Checksum:

[+]

urn:sha-512:9cce6b89ec607d01717636012f05410f904cc3229729c5cd5c9990c981c3d7c9407f1489912e3ff8dd988e778f9cb9946e2a85191390dba0d08b72ff533743c1
Download URL:

https://rosap.ntl.bts.gov/view/dot/34784/dot_34784_DS1.pdf
File Type:

[PDF-410.98 KB]