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Abras FRM

The document outlines the testing procedure for the resistance to abrasion of coarse aggregate using the Los Angeles abrasion machine, as per the MRD Test Method 309. It includes details on sample grading, weights, and the percentage of wear after testing. Additionally, it provides spaces for recommendations and specifications related to the test results.

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Mon BeeCool
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35 views1 page

Abras FRM

The document outlines the testing procedure for the resistance to abrasion of coarse aggregate using the Los Angeles abrasion machine, as per the MRD Test Method 309. It includes details on sample grading, weights, and the percentage of wear after testing. Additionally, it provides spaces for recommendations and specifications related to the test results.

Uploaded by

Mon BeeCool
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLS, PDF, TXT or read online on Scribd
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KINGDOM OF SAUDI ARABIA ‫المملكة العربية السعودية‬

MINISTRY OF TRANSPORT ‫وزارة النقــــل‬


MATERIALS RESEARCH and ‫ادارة المواد والبحــوث‬
TESTING DEPARTMENT

Consultant : ‫ االستشاري‬:
Contractor : Al-Ayuni Trading & Contracting Est. ‫ مؤسسة العيوني للتجارة والمقاوالت‬:‫المقاول‬
Collective with Al Ayuni Co. ‫بالتضامن مع شركة العيوني للتجارة والمقاوالت‬

Project :

Source :

Materials Description : Date :


Sampled at Quantity Proposed Use

Tested By : Lab. Ref. No.


Name Designation Date

RESISTANCE TO ABRASION OF COARSE AGGREGATE BY USE


OF THE LOS ANGELES ABRASION MACHINE
MRD Test Method 309 (AASTHO T 96 )

A S T M Sieve Size Weight and Grading of Test Sample, grams Remarks


Passing Retained A B C D
2 1/2" 2.0 "
2.0 " 1 1/2"
1 1/2" 1.0 " 1250
1.0 " 3/4 " 1250
3/4 " 1/2 " 1250 2500
1/2 " 3/8 " 1250 2500
3/8 " No.3 2500
No.3 No.4 2500
No.4 No.8 5000

Totals 5000 5000 5000 5000

A) Grading of Test Sample Use -


No. of Spheres - pcs.
B) Total weight of sample before test - g. g. Wt. of Spheres - g.

C) Weight of sample after 500 revolutions -


( Retained on No.12 sieve , 1.70mm.) g.

D) Percentage of Wear ( B-C ) / (B)*100 % %

Average - %

Recommendations :

Specification Requirement - max.

Contractor Materials Inspector Resident Engineer

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