Astm C128 New!

The increase in mass of the aggregate due to water in the pores, expressed as a percentage of the dry mass. Standard Test Procedure The test generally follows these sequential steps: Preparation: Oven-dry approximately 500g of the sample at to a constant mass, then cool to room temperature. Soaking: Submerge the sample in water for hours to ensure full saturation.

| Feature | C128 (Fine) | C127 (Coarse) | |---------|-------------|---------------| | Primary apparatus | Pycnometer (flask) | Wire basket + balance | | SSD determination | Slump cone | Towel-drying + visual | | Sample size | 500 g | 2–5 kg | | Air removal | Rolling/rotating | Agitation in water | | Difficulty | Higher (operator dependent) | Moderate |

If the sand slumps slightly when the mold is removed, it has reached the Saturated-Surface-Dry (SSD) state. astm c128

Fill a conical mold with the sand and tamp it 25 times.

Place the SSD sample into a pycnometer or flask partially filled with water, remove air bubbles (by rolling or agitating), and fill to capacity. Critical Equipment Precision in ASTM C128 depends on standardized equipment: The increase in mass of the aggregate due

The data obtained from this test is crucial for engineers and batch plant operators for two primary reasons:

ASTM C128 measures two interdependent physical properties of fine aggregates (passing a 4.75 mm sieve): | Feature | C128 (Fine) | C127 (Coarse)

Measurement of Water Absorption of Recycled Aggregate - MDPI

Decant excess water and dry the sample with warm air until it reaches a "free-flowing" state.