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gradation of aggregate for road conditions i-80

Aggregates - Types of Aggregates | Coarse Aggregate, Fine ...

Aggregates are used as the base, subbase, and/or surface of roads in several forms; In roads and railway ballast, it is used to help distribute the load and assist in ground water running off the road. Increases the volume of concrete, thus reduces the cost. Aggregates account for 60-75% of the volume of concrete and 79-85% weight of PCC

Section 12 Roadway Materials - UCANR

Aggregate.Specifications include the allowable gradation ranges, as well as materials quality test requirements. Gradation -Use Base Course where confined under a seal coat or pavement (2-9% fines). -Use Surface Course aggregate where placed directly on the road surface (6-15% fines).

What is the maximum gradient allowed on the road? - Quora

Jan 12, 2020 · US federal interstate systems have a maximum of seven percent (7%) gradient (slope) due to usage by long-haul trucks which will often be loaded near their maximum weight. The maximum gradient of local roads is usually restricted by local ordinance and will be on the order of 12% to 15% slope.

Sizes and Grading of Aggregates for Road Maintenance and ...

fine aggregate at the No. 4 sieve, or approximately A -inch square opening. Coarse aggregate has most of the product rationed on a No. 4 sieve and fine aggreate, like sand, passes a No. 4 sieve. This arbitrary line explains our having coarse-aggregate and fine-aggreate tables for gradation.

Study of aggregate gradations in foamed bitumen mixes: Road ...

This paper investigated the influences of aggregate gradation on the mix design and mechanical properties of foamed bitumen mix (FBM). Various gradations with different compositions of the fine aggregate fraction (FAF) and coarse aggregate fraction (CAF) were designed and quantified as gradation shaper factors for the different fractions.


Oct 24, 2012 · shovel is the accepted standard for coarse aggregate. It should be used when taking samples to represent gradation. A round pointed shovel or a spade may be used to facilitate collecting a mass of material when representing the gradation isn't necessary. Although, all three of these devices distort gradation samples

Gravel Roads: Maintenance and Design Manual

Paved Road: Any road that has a semi-permanent surface placed on it such as asphalt or concrete. Gravel surfaced roads are virtually always referred to as unpaved roads. Pit: An area where a natural deposit of stone, sand and/or fine material is removed from the earth. Quarry: An area where solid stone is removed from the

Gradation of Coarse Aggregates

Proper gradation ensures that a sample of aggregates contains all standard fractions of aggregate in required proportion such that the sample contains minimum voids. A sample of the well graded aggregate containing minimum voids will require minimum paste to fill up the voids in the aggregates.


Mar 23, 2015 · The following conditions decide the maximum size of coarse aggregate to be used in concrete It should not be more than one fourth of the minimum thickness of the member provided that the concrete can be placed without difficulty so as to aurround all reinforcement thoroughly and fill the corner of the form.

Grading of Aggregates - Aggregate Grading | The Construction ...

In grading of aggregates, the voids in the mixed aggregate would be minimum when the sand is just sufficient to fill the voids in the coarse aggregate. Voids in the coarse aggregate are filled in by sand and voids in the sand are filled in by cement. Mix that occupies the least volume is the densest and will produce the best results.

Asphalt Aggregate Gradation and Size Testing with Industrial ...

Gradation testing, also called sieve analysis, is a fairly basic yet essential test that measures the gradation (or distribution of aggregate particles, by size, within a given sample) to determine whether it's compliant with design, production control requirements, and verification specifications.

Specifications For CRUSHED AGGREGATE BASE COARSE #2 & #3 ...

Crushed Aggregate Base Coarse Gradation No. 3 (Compaction Gravel) to be picked-up by Town of Rice Lake vehicles The purpose of this contract is to ensure the Town of Rice Lake a set price and availability of Crushed Aggregate Base Coarse Gradation No. 2 and Gradation No. 3 (Compaction Gravel). Reference Standards

Gradation Test - Pavement Interactive

Gradation Types (see Graph) Aggregate gradation can be generally described by a few broadly defined gradation categories; each one describing a general type of gradation. These categories are: Dense or well-graded. Refers to a gradation that is near the FHWA's 0.45 power curve for maximum density.

703 AGGREGATE - Pages

Supplement on file in the Office of the Director. E. Steel Slag Aggregate. Provide open-hearth (OH), basic oxygen furnace (BOF,) and electric arc furnace (EAF) steel slag aggregate (known as steel slag) conforming to the following requirements when 703.04 aggregate for asphalt concrete base or when any 703.05 aggregate is specified.

Section 815 Graded Aggregate

Section 815—Graded Aggregate Page 4 Ensure that the material does not contain delivery unit washout material. 3. Gradation Ensure that the finished product meets the quality and gradation requirements of Subsection 815.2.01 for Group II aggregates, except that the aggregate will be recycled concrete.

Managing Gravel Road Maintenance

Clear illustration of 2% crown on road to the left and 4% on the road to the right. Water will not drain off an aggregate surface with only 2% crown. This must be addressed in design and during construction. Managing Gravel Road Maintenance

Driving Surface Aggregate (DSA) | Center for Dirt and Gravel ...

Appendix F: Road Aggregates 101 (299 KB): A summary of size, gradation, and typical use for some of the more common aggregates for road maintenance in Pennsylvania. Includes course aggregates and rip-rap. (10/12) Appendix G: Municipal DSA Guide (191 KB): An abridged 2-page guide to DSA meant for townships and other applicants. (3/18)

4 Aggregate Specifications and Requirements

These aggregates are specified for use under some conditions to obtain high-friction, skid-resistant HMA surface courses. ITM 205 is used to veify that the aggregate is carbonate rock containing at least 10.3 percent elemental magnesium. Polish Resistant Aggregates Aggregates that meet the requirements of ITM 214 may be used in place of


Sep 12, 2015 · The test consists of subjecting the specimen of aggregate in standard mould to a compression test under standard load conditions (See Fig-1). Dry aggregates passing through 12.5 mm sieves and retained 10 mm sieves are filled in a cylindrical measure of 11.5 mm diameter and 18 cm height in three layers.

Road Aggregate 101: Important Stuff

Road Aggregate 101: Nominal maximum and/or minimum sized stone in mix The nominal size distribution of an aggregate specification is defined as the range of sieve openings through which 100% of the aggregate can pass. Road Aggregate 101: Gradation or distribution of different sized stones Open graded aggregate vs. well graded aggregate.

A Detailed Guide on Grading of Aggregates.

The number of sieves is five for the coarse aggregates and ten for all-in-aggregates. It is only six in the case of fine aggregates. Sieve Size for Grading of Aggregates. Coarse Aggregates: 80 mm, 40 mm, 20 mm, 10 mm, IS Nos. 480. Fine Aggregates: IS No. 480, 240, 120, 60, 30 and 15.

5 Aggregate Specifications and Requirements

In some cases, aggregates must meet special requirements for a particular use in construction as required in various Sections of 904. Some contracts may specify a unique gradation or aggregate. Details pertaining to this special requirement will appear in the Special Provision section of the contract proposal booklet for that contract. Fine ...

Gradation Test | Sieve Analysis of Fine and Coarse Aggregates

Jun 02, 2012 · Take a pan and measure its weight. Put some sand in the pan and with the help of triple beam balance measure 500 gram of the sand. Put the sand in sieve #4, and start the sieve shaker for 15 minutes. After 15 minutes stop the shaker and separate the sieve #4 from the apparatus.

IS 383 (1970): Specification for Coarse and Fine Aggregates ...

2.1.2 Crushed Stone Sand - Fine aggregate produced by crushing hard stone. 2.1.3 Crushed Grace1 Sand - line aggregate produced by crushing natural gravel. . 2.2 Coarse Aggregate -- Aggregate most of which is retained on 4*75-mm IS Sieve and containing only so much finer material as is permitted for

Aggregate Testing Standards — EnviroMINE, Inc.

Dec 24, 2015 · Fine aggregates pass the 3/8-inch sieve and are retained on a #200 U.S. sieve. 6. Fine Aggregate. Fine aggregate consists of natural sand, manufactured sand, or a combination. The ASTM C33 specifications for fine aggregates for concrete are given in Table 1. 3. Table 1 3 ASTM Gradation Specifications for Fine Aggregates for Portland Cement Concrete

Aggregate | Washington Asphalt Pavement Association

Section III: Surface Gravel - US EPA

more controversy in aggregate testing than any other factor. Every effort must be made to make sure that the sample brought to a lab is truly representative of the material in the field.It is wise to follow national standards such as The Benefit of Testing Aggregates 41 Figure 9: Stack of sieves used for testing the gradation of aggregate.

Road Aggregates - SlideShare

Jan 01, 2017 · Road Aggregates 1. PAVEMENT MATERIALSPAVEMENT MATERIALS ENGINEERINGENGINEERING (CE-862)(CE-862) Lec-09 Fall Semester 2016 Dr. Arshad Hussain [email protected], Office Room#111, Tel: 05190854163, Cell: 03419756251 National Institute of Transportation (NIT) School of Civil & Environmental Engineering (SCEE) National University of Science and Technology (NUST) NUST Campus, Sector H-12, Islamabad