Soil, Soil Testing, Soil Moisture Testing

What Is a Proctor Compaction Test? Understanding Soil Density with Humboldt Equipment

• May 8th, 2025
• Category: Soil & Aggregate Moisture Testing

In the world of geotechnical engineering and construction, the stability and longevity of a structure often begin below the ground, with the soil. One essential process in assessing soil suitability is the Proctor Compaction Test, a laboratory method that determines the optimal moisture content at which soil achieves its... Read more >

Sieves, Particle Size Distribution, Soil Testing, ASTM D7928, ASTM D422

D6913 and D7928 Replace D422 Particle Size Analysis

• January 6th, 2022
• Category: Announcements, Guest Posts

This guest post was written by Jack Germaine . He is a Research Professor of Civil and Environmental Engineering at Tufts University. Determination of the particle size distribution (PSD) is one of the most requested soil characterization tests. The results are used for classification and estimation of engineering... Read more >