Opening: 00AM - 24PM
RAP Management Best Practices - MnDOT

Variability: RAP vs. Aggregate Based on 74 RAP stockpiles in 14 states, and 60 Aggregate stockpiles in 6 states 22. 23 Fractionated RAP-3/16" RAP +3/4" RAP 3/4 x 3/16" RAP In back • Screening RAP into two or more sizes ... – Covered Stockpiles

Get Price
ATM 301 Sampling of Aggregates Products

This procedure covers sampling of coarse, fine, or a combination of coarse and fine aggregates (CA and FA) in accordance with AASHTO R 90-18. Sampling from conveyor belts, transport units, roadways, and stockpiles is covered.

[DOC]Get Price
9727-06/Sec6 12/20/00 17:51 Page 50 SECTION Aggregate ...

FIGURE 6-1 Covered aggregate stockpiles. blended in the stockpiles, a combination of sizes will occur in each cold-feed bin. This blending of the ag­ gregate will cause variations in the gradation of the HMA produced by a drum-mix plant and may cause problems with unbalanced hot bins in a batch plant.

[PDF]Get Price
Calculating Stockpile Capacity

Calculating Stockpile Capacity: Once the minimum storage capacities which will assure maximum mill output are known, the appropriate stockpile configuration must be determined. Stockpiles fall into two general categories: conical and elongated. Conical Stockpiles The conical stockpile is the simplest and easiest to analyze. The total stockpile capacity is given by: 3.14 (Tan A)R³ D/3000 ...

[PDF]Get Price
Aggregates for Concrete - Portland Cement Association · Web view

Aggregates for Concrete. The proper selection of aggregates for use in concrete mixtures is critical to long term concrete performance. Aggregates generally occupy 60% to 75% of the concrete volume and strongly influence the concrete's fresh and hardened properties, mixture proportions, and economy.

Get Price
Aggregate Storage - National Asphalt Pavement Association

Aggregate Storage HMA is a mixture of aggregate (crushed stone, gravel, and sand), and asphalt binder. Aggregates are usually stored in stockpiles as shown. Stockpiles may be covered to prevent rain from soaking the aggregate or aggregates .

Get Price
Transportation Research Board

Transportation Research Board

[PDF]Get Price
State of the Practice for Use of RAP in Hot-mix Asphalt ...

Dec 28, 2000 · Therefore, covering RAP stockpiles is even more economical than covering aggregate stockpiles. RAP should never be covered with a tarp or plastic, however. In humid climates, which are the climates where covering RAP stockpiles seems logical, covering stockpiles causes condensation under the tarp and adds moisture to the RAP stockpile.

[PDF]Get Price
SAMPLING OF AGGREGATES FOP FOR AASHTO T 2 Scope .

Oct 31, 2013 · T2_short_15.docx Aggregate 9 - 1 Pub. October 2015 SAMPLING OF AGGREGATES FOP FOR AASHTO T 2 . Scope . This procedure covers sampling of coarse, fine, or a combination of coarse and fine aggregates (CA and FA) in accordance with AASHTO T 2-91. Sampling from conveyor belts, transport units, roadways, and stockpiles is covered. Apparatus

Get Price
State of the Practice for Use of RAP in Hot-mix Asphalt ...

Dec 28, 2000 · Therefore, covering RAP stockpiles is even more economical than covering aggregate stockpiles. RAP should never be covered with a tarp or plastic, however. In humid climates, which are the climates where covering RAP stockpiles seems logical, covering stockpiles causes condensation under the tarp and adds moisture to the RAP stockpile.

Get Price
Transport and Main Roads Specifications MRTS22 Supply of ...

2. Use of stockpile 1. Covering aggregate stockpiles . 5.2 Construction procedures Construction procedures which are required to be submitted by the Contractor to the Administrator in accordance with Clause6 of MRTS50 Specific Quality System Requirements are .

Get Price
1006 PORTLAND CEMENT CONCRETE - Home | ADOT

Aggregate which comes directly from washing plants should remain in the stockpile long enough so that no free drainage is visible when the aggregate is transported to the mixer. Aggregate proposed for use in concrete pavement should not vary in moisture content more than 3% in any one work shift if good slump control is to be maintained.

[PPT]Get Price
Chapter 3 Aggregate Production and Acceptance

Chapter 3 Aggregate Production and Acceptance 3-01 Production From Quarry and Pit Sites ... are stockpiled or disposed of in accordance with the reclamation plan as covered in Section 3-03. Care is taken in this operation so that usable material is not fouled or lost. ... Engineer in accordance with the specifications for stockpiling material ...

[PDF]Get Price
SAMPLING OF AGGREGATES (See Addendum for DOT&PF .

SAMPLING OF AGGREGATES (See Addendum for DOT&PF Guidelines) FOP FOR AASHTO T 2 Scope This procedure covers sampling of coarse, fine, or a combination of coarse and fine aggregates (CA and FA) in accordance with AASHTO T 2. Sampling from conveyor belts, transport units, roadways, and stockpiles is covered.

[PDF]Get Price
Procedures for Aggregate Inspection 06172019

for aggregate materials as standardized by the Michigan Department of Transportation (MDOT). Many, but not all, situations the technician encounters will be covered. Adherence to the procedures contained herein will ensure that tests performed by numerous individuals on the same lot of aggregate materials will be in substantial agreement.

[PDF]Get Price
Managing On-site Stockpiling and Use of High Volumes of ...

Managing On-site Stockpiling and Use of High Volumes of Concrete-based Demolition Material Page iv OFFICIAL Producing aggregates for reuse: o Segregate materials and keep fines content to a minimum. It is noted that this is recommended on the balance of evidence, some of which is contradictory (Key Knowledge Gap 2); and

Get Price
S20 CMM - 860 Materials Testing and Acceptance - Aggregates

4.2 Coarse aggregate for the test shall consist of plus 4.75 mm (No.4) sieve size material. For WisDOT source approval, sample stockpiles with 100 percent passing the 1-1/2 inch sieve. 6 Use procedure B with methyl alcohol. 6.1.2 Each sample fraction container shall be placed in the freeze apparatus. Samples shall be covered and placed a

[PDF]Get Price
Definition and · Web view

Stockpile management procedures and practices are designed to reduce or eliminate air and storm water pollution from stockpiles of soil, and paving materials such as portland cement concrete (PCC) rubble, asphalt concrete (AC), asphalt concrete rubble, aggregate base, aggregate subbase or pre-mixed aggregate, asphalt binder (so called "cold mix" asphalt) and pressure treated wood.

[PDF]Get Price
Soil Stockpiling for Reclamation and Restoration ...

Soil Stockpiling for Reclamation and Restoration activities after Mining and Construction . Patti Strohmayer . Stockpiling is a necessary part of civil engineering and mining operations. Stockpiling involves removing the topsoil (the A and B horizon of the soil). The topsoil is usually removed with heavy equipment and then piled in large, deep piles for the duration of the civil engineering or ...

Get Price
Contending with stockpile segregation, product quality ...

Mar 19, 2020 · Although placing product in a stockpile endangers its quality, stockpiling is a vital link in the aggregate production process. It is a storage method that ensures material availability. The rate of production often differs from the rate at which the product is required for a given application, and stockpiles help to absorb the difference.

[PDF]Get Price