Cement Replacement Material - an overview | ScienceDirect ...
The grading of an aggregate defines the proportions of particles of different size in the aggregate. ... Aggregates should be clean and free from deleterious substances such as organic matter and clay. Their crushing strength should be greater than the specified compressive strength of the concrete. ... If the supply of water is plentiful, such ...
32 11 23 - Aggregate Base Course
A. Aggregate for the two classes of aggregate bases at the time the base material is deposited on the prepared sub grade or sub base shall conform with ASTM D1241 and the following requirements: 1. Class 1 Aggregate Base: a. Class 1 aggregate base shall consist of crushed stone or gravel, free from vegetable matter and other deleterious substances.
20D.140.50 Critical Aquifer Recharge Areas.
(i) The owner or operator of any facility or activity shall provide secondary containment for hazardous materials or other deleterious substances in aggregate quantities equal to or greater than 20 gallons liquid or 200 pounds solid or in quantities specified in the Redmond Fire Code (Chapter 15.06 RMC), whichever is smaller.
Aggregates for Concrete as per American Standards - ASTM ...
Deleterious Substances. The range of deleterious substance permissible in the fine aggregate as per the ASTM is prescribed in the Table-2 below-Table 2: Deleterious Substance in Fine Aggregate. If the organic impurities exceed the prescribed limits, the aggregates shall be subjected to the test for organic contaminants and producing a ...
Construction Specification 14—Pressure Grouting
Storage and supply— ... Aggregates shall consist of sound and durable particles and shall conform to the limitations for deleterious substances and the grading requirements of ASTM Specification C 33. Coarse aggregates shall be size 7, 67, 57, or 467 as defined in ASTM Specification C 33.
Deleterious Materials and Organic Impurities in Aggregates ...
The substances, who affect harmful physically or chemically on the aggregates, are considered to be deleterious. Commonly deleterious materials are organic matters, dust (materials passing through 75 micron sieve), clay lumps, shale, coal iron pyrites, friable particles, chert (weak in terms of freezing and thawing), etc. which are weak, soft ...
Specification 1096 I Concrete Slope Protection
.4 Supply and placement of concrete on the structure headslopes for slope protection to the required ... matter or other injurious substances. Coarse aggregate shall be clean and free from alkali, organic or ... loam or other deleterious substances.
AGGREGATES
Deleterious Substance Limits Coarse Aggregate for Concrete Substance Max. %, by weight [mass] Shale or Coal 0.1 Clay Lumps 0.5 Material Passing a No 200 [75µm] sieve 2.0 Other deleterious substances such as friable, thin, elongated or laminated pieces 3.0 …
SECTION 903-AGGREGATES
(a) Deleterious Substances. The amount of deleterious substances shall not exceed the following limits: Maximum Per Cent, by Weight 1. Soft or non-durable fragments (fragments which are structurally weak such as shale, soft sandstone, limonite concretions, gypsum, weathered schist or cemented gravel) 3.00 2. Coal and lignite 1.00 3. Clay lumps ...
Determining Deleterious Material and Decantation Test for ...
DETERMINING DELETERIOUS MATERIAL AND DECANTATION TEST FOR COARSE AGGREGATES (BITUMINOUS MIXTURES) TXDOT DESIGNATION: TEX-217-F MATERIALS AND TESTS DIVISION 2 – 8 EFFECTIVE DATE: JULY 2019 3.6 Pans, scoops, trowels, and other normal laboratory supplies and equipment. 4. PROCEDURE 4.1 Obtain a representative sample of aggregate for testing in …
A-3 SPECIFICATIONS REINFORCED CONCRETE CONSTRUCTION
4.1 All concrete aggregates shall be clean, hard, durable and free from deleterious material, and shall meet the requirements of Clause 5 of CSA Standard A23.1-00, ... of the intended source of supply for both fine and coarse aggregate ... deleterious substances and shall contain less than 2,000 ppm of …
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and other deleterious substances as well as adherent coating. As far as possible, scoriaceous, flaky and elongated pieces should be avoided. 5.2 Deleterious Materials Aggregate shall not contain any harmful material, such as pyrites, coal, lignite, mica, shale or similar laminated material, clay, alkali, free lime, soft fragments, sea shells
DIVISION III MATERIALS
aggregate. Approval of mineral aggregate sources shall be in accordance with 6-2.3. 901-1.2 Deleterious Substances: All coarse aggregates shall be reasonably free of clay lumps, soft and friable particles, salt, alkali, organic matter, adherent coatings, and other substances not defined which may possess undesirable characteristics.
DIVISION 800 MATERIALS
801.02 Deleterious Substances. Material suspected of containing deleterious substances will be examined in the laboratory and will be rejected if the amount is considered objectionable. Coarse aggregate for Portland cement concrete and cover aggregate for bituminous treatment shall be washed and shall be free from adherent coatings.
BEST PRACTICES MANUAL - Precast
aggregate deleterious Substances Ensure all aggregates are free of deleterious substances. Deleterious substances include: • Substances that cause an adverse chemical reaction in fresh or hardened concrete • Clay, dust and other surface-coating contaminants • Structurally soft or weak particles For good bond development, ensure aggregate
QUALITY ASSURANCE for AGGREGATES
7 Deleterious material Water demand (strength), bond, cohesion and durability Surface texture of aggregate influences the bond between the aggregate and cement. Smooth surface such as that found on gravels will have a poor bond. Crushed aggregates have a rough texture and give a good mechanical bond with cement. However, gravel or
Deleterious Substances in Aggregates - Concrete Engineers M
Aggregates for concrete, if containing deleterious substances, may affect strength, workability and long term performance of concrete in the long term. These substances or materials are normally referred to as deleterious materials. They are undesirable due to their weakness, softness and fineness or any other physical or chemical characteristics harmful to properties of concrete.
CW 3410 ASPHALTIC CONCRETE PAVEMENT WORKS …
Fine aggregate shall consist of sand having clean, hard, strong, durable, uncoated grains free from injurious amounts of dust, soft or flaking particles, shale, alkali, organic matter, loam or other deleterious substances. (b) Coarse Aggregate Coarse aggregate shall consist of natural gravel, crushed stone or other approved materials of
Fineness Modulus of Aggregate and Deleterious substances ...
Lecture-5: Fineness Modulus of Aggregate and Deleterious substances in Aggregate | Concrete technology by Dr K Mohan.Dr K Mohan is an internationally renowne...
MICHIGAN DEPARTMENT OF TRANSPORTATION BUREAU OF ...
slag, or natural sand. The aggregate shall be composed of sound, tough, durable particles and shall meet the requirements for deleterious substances given in ASTM C33. The aggregate in any size group shall not contain more than 8 percent by weight of flat or elongated pieces. A flat or elongated particle is one having a ratio between the
SECTION M.04 BITUMINOUS CONCRETE MATERIALS
other deleterious substances. The fine aggregate or the blended fine aggregates shall conform to Grading No. 1 shown below (AASHTO M 29 modified): Fine Aggregate Grading Requirements: Passing Sieve Size Grading No. 1 9.5 mm 100 4.75 mm 95 to 100 2.36 mm 70 to 100 600 µm 20 to 65 300 µm 7 to 40 75 µm 0 to 10
[INFO] Aggregate Base Course Class 7 - 2021
Class 2 aggregate base shall be free of vegetable matter and other deleterious substances. 5850 18170100 0005 – 401011 – tack coat – 29433000 gal pine02 pine bluff sand. In subsection 70303 delete Table 703-2 and replace with the following. Class 2 …
Deleterious Substances in Aggregates | PDF | Concrete | Cement
• Deleterious substances (DS) in general, are unwanted matter present that can possess damaging effects. • These deleterious materials may be distributed throughout the entire rock or deposit, be confined to only a part of it. • Aggregates for concrete, if containing DS, may affect strength, workability and long term performance of concrete.
Coarse Aggregate Source Approval Policy
deleterious substances, or unusual test results. A copy of these instructions and the ... In section 4, clarified the need to supply #57 size aggregate for concrete aggregate approval. In Appendix A, revised reference to specific tables in R 18. 3/5/2015: Changed all instances of "Materials Engineer" to "Materials and Research Division ...
DIVISION 1100 AGGREGATES
* Use with Basic Aggregate to produce Mixed Aggregate **If limestone or dolomite aggregates do not comply with Class 2 in subsection 1102.2a.(3), the maximum percent retained is 5. (c) Deleterious Substances. Maximum allowed deleterious substances by weight are:
6 Types of Deleterious Substances in Aggregate - The ...
Deleterious Materials In Aggregate. The materials whose presence in aggregates may adversely affect the strength, workability & long-term performance of concrete are termed as deleterious materials. These are considered undesirable constituents. The total amount of deleterious materials in aggregate should not exceed 5% as per IS 383-1970.
AN EXPERIMENTAL STUDY ON WASTE GLASS AS PARTIAL ...
aggregate. About 90% of the volume of concrete is aggregate. Hence quality of aggregate is one of the factors which decide the quality of concrete. Its physical and chemical properties influence the performance of concrete. The aggregate used in concrete shall be hard, strong, dense, durable, clean and free from other deleterious substance.
Aggregates for Concrete
fications limit the permissible amounts of deleterious substances and provide requirements for aggregate char-acteristics. Compliance is determined by using one or more of the several standard tests cited in the following sections and tables. However, the fact that aggregates satisfy ASTM C 33 or AASHTO M 6/M 80 requirements
City of Lincoln 2020 Standard Specifications Chapter 3 ...
the City Engineer. The fine aggregate shall be free from injurious amounts of clay, loam, alkali, organic matter and other deleterious substances. Fine aggregate shall have a soundness loss of not more than 10% by weight at the end of 5 cycles using sodium sulfate solution. The aggregate shall contain no more than 0.5% by weight of clay lumps.
Qualities & Properties of Aggregates for Concrete
Aggregates used for concrete should possessthe following qualities, It should be clean, hard, strong, durable and free from any matter that might affect the quality of concrete. It should be free from veins, adherent coating, injurious amounts of disintegrated pieces, …