The Standard Test Method for Sand Equivalent Values of Soils and Fine Aggregate, and the ASTM E 491 Data Analysis for Eight Lab Studies Using Minus No. 4 Fraction results are presented in appendices.

The presence of clay minerals in coarse and fine aggregates can have remarkable effects on the workability of fresh concrete, effectiveness of chemical admixtures, and on the mechanical strength, dimensional stability and durability of …

The term "sand equivalent" expresses the concept that most granular soils and fine aggregates are mixtures of desirable coarse particles, sand, and generally undesirable clay or plastic fines and dust.

Read chapter Summary: TRB's National Cooperative Highway Research Program (NCHRP) Report 539: Aggregate Properties and the Performance of Superpave-Desi...

The sand equivalent test is used to limit the presence of clay material in the aggregate. The sand equivalent test (AASHTO T176; ASTM D2419) is a rapid field test to show the relative proportions of fine dust or clay-like materials in …

Assessment of natural sand being used as fine aggregate for concrete production in Ibadan and its environs was carried out.

astmd241995-Standard Test Method for Sand Equivalent Value of Soils and Fine Aggregate-This test method is intended to serve as a rapid field-correlation test.

The sand equivalent (SE) is a measure of clay content or plastic fines in fine aggregates (passing size 4.75 mm or #4 sieve). The sand equivalent is an empirical value representing the ratio of the height of sand to the height of flocculated material times 100 (ASTM International 2014 ).

Suggested Citation: "Chapter 2 - Aggregate Sources, Recycling, and Blending." National Academies of Sciences, Engineering, and Medicine. 2018. Aggregate Quality ...

Fine aggregate commonly known as sand is an inert material widely used for construction works. From concrete production to mortar, asphalt, and even the creation of glass and bricks, sand's unique properties make it an indispensable component of modern construction. This article explores the significance of fine aggregate in …

Aggregates for Concrete as per American Standards – ASTM [PDF] The aggregates used in the production of concrete are inert granular materials such as gravel, crushed stone, sand, slag, recycled concrete, and geosynthetic aggregates. The aggregates may be natural, manufactured, or recycled. Fig 1: Aggregates used in production of concrete.

Sand Equivalent (SE) indicates the relative proportions of clay-size or plastic fines/dust in granular fine aggregate that pass 4.75 mm ( ASTM D2419, 2014 ). It is reported that the value of SE is more liable on dust rather than the value test ( …

Task Force Report on ASTM D 2419: Sand Equivalent Value of Soils and Fine Aggregate, Prepared for ASTM Subcommittee D 04.51

The receptiveness of the sand equivalent test to mica content could be caused by the ability of mica to stay in suspension due to its flake-shaped grains.

The term "sand equivalent" expresses the concept that most granular soils and some fine aggregates are mixtures of desirable coarse particles, sand-size particles, and generally undesirable clay or plastic fines and dust.

D 2419 - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free.

Consequently, it is best to avoid adding too much fine aggregate to a concrete mixture, and to avoid using extremely fine sand unless an intermediate aggregate is used in the batch proportions to fill in some of the missing sizes.

The data developed indicate that for a given fine aggregate, as the sand equivalent value changes from 60 to 80, the concrete properties will exhibit the following changes.

The term "sand equivalent" expresses the concept that most granular soils and fine aggregates are mixtures of desirable coarse particles, sand, and generally undesirable clay or plastic fines and dust.

The term "sand equivalent" expresses the concept that most granular soils and some fine aggregates are mixtures of desirable coarse particles, sand-size particles, and generally undesirable clay or plastic fines and dust.

When two or more primary sizes of coarse aggregate are combined in a mix, determine the weighted-average Cleanness Value for the mix. For portland cement concrete mixes, calculate the weighted-average Cleanness Value using the combinations shown below regardless of the actual proportions to be used on the project.

The term "sand equiva-lent" expresses the concept that most granular soils and fine aggregates are mixtures of desirable coarse particles, sand, and generally undesirable clay or plastic fines and dust.

Gilson's sand equivalent test equipment includes the components necessary for running the sand equivalent test. The test procedure indicates the relative proportions of undesirable clay-like fines in …

ASTM C33 specifies the requirements for grading and quality of fine and coarse aggregate for use in concrete. It includes criteria for acceptable natural and manufactured sand, as well as for organic impurities. This standard may also be used to specify aggregate quality and other particular grading requirements.

The sand equivalent value of a specific fine aggregate fraction is defined as dimensionless value and represents the ratio between the quantities of flocculated material (sand) and suspended material.

The term " sand equivalent " expresses the concept that most granular soils and fine aggregates are mixtures of desirable coarse particles, sand, and generally undesirable clay or plastic fines and dust. Note 1—Some agencies perform the test on material with a top size smaller than the 4.75-mm (No. 4) sieve. This is done to avoid trapping ...

The term "sand equivalent" expresses the concept that most granular soils and fine aggregates are mixtures of desirable coarse particles, sand, and generally undesirable clay or plastic fines and dust.

Question: 2. A fine aggregate was tested by the Sand Equivalent Test (ASTM D2419). After 20 minutes settling in the cylinder filled with water and a flocculating agent, the heights of clay and sand were recorded to be 251 mm and 129 mm, respectively. What is the sand equivalent value?

A low value of sand equivalent characterize the fine aggregate as "dirty" and indicates that possibly the clay materials are harmful.

Title of Legally Binding Document: Methods of test for soils, Part 37: Determination of sand equivalent values of soils and fine aggregates