What is C33 aggregate?
What is C33 aggregate?
According to ASTM C33 coarse aggregate consists of gravel, crushed gravel, crushed stone, air-cooled blast furnace slag, crushed hydraulic-cement concrete, or a combination. The use of crushed hydraulic-cement concrete may require some additional precautions.
What is ASTM C136?
ASTM C136, 2006 Edition, February 15, 2006 – Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates. This test method covers the determination of the particle size distribution of fine and coarse aggregates by sieving.
What is ASTM C29?
ASTM C29. This test method is often used to determine bulk density values that are necessary for use for many methods of selecting proportions for concrete mixtures. The bulk density also may be used for determining mass/volume relationships for conversions in purchase agreements.
What is good grading of aggregates?
Grading Limits for Fine Aggregates
| IS Sieve Designation | Percentage Passing | |
|---|---|---|
| 4.75 mm | 90 – 100 | 95 – 100 |
| 2.36 mm | 60 – 95 | 95 – 100 |
| 1.18 mm | 30 – 70 | 90 – 100 |
| 600 microns | 15 – 34 | 80 – 100 |
What is the unit weight of aggregate?
The apparent density or unit weight of an aggregate is the Mass or weight of the aggregate needed to fill a container with a specified unit volume. Main features: If the volume is one unit, Bulk density = Mass. Unit in kg / m3 or lb / ft3.
What is 10mm to dust aggregate?
Clean Crushed Concrete is made up of Crushed Concrete and Brick which has been screened to remove dust and fine particles. Sizes range from 10mm down to dust this type of Crushed Concrete in mainly used as a sub-base. It is also used as a drainage layer where the presence of fines is not desirable.
What size aggregate is best for concrete?
The size of your coarse aggregates is your main factor in determining the strength of your concrete. Generally, you’ll want smaller coarse aggregates for stronger concrete, with 20mm aggregates fulfilling the threshold for strong concrete, and 40mm aggregates the threshold for normal strength concrete.
What is the ASTM C33 specification for concrete?
1.1 This specification defines the requirements for grading and quality of fine and coarse aggregate (other than lightweight or heavyweight aggregate) for use in concrete. 1.2 This specification is for use by a contractor, concrete supplier, or other purchaser as part of the purchase document describing the material to be furnished.
What are the limits for fine aggregate for concrete?
Source: Table 1 Limits for Deleterious Substances in Fine Aggregate for Concrete, ASTM C 33. * In the case of manufactured sand, if the material finer than the 75-micron (No. 200) sieve consists of the dust or fracture, essentially free of clay or shale, these limits are permitted to be increased to 5 and 7%, respectively. 2/12/2015 7
What’s the maximum size for a coarse aggregate?
•Example: ASTM C33 requires that 100% of a # 57 coarse aggregate MUST pass the 1.5” sieve but 95 – 100% MAY pass the 1” sieve, therefore # 57 aggregate is considered to have a Maximum size of 1.5” and an Nominal Maximum size of 1”. 2/12/2015 12
What kind of aggregate is used to make concrete?
Coarse aggregate shall consist of gravel, crushed gravel, crushed stone, air-cooled blast furnace slag, or crushed hydraulic-cement concrete, or a combination thereof.