Atterberg Test Procedure | Liquid & Plastic Limit Testing Explained

Atterberg Test procedure – Liquid Limit and Plastic Limit testing in a geotechnical laboratory. In this video, Ideal Geotech demonstrates the Atterberg Limits test, including the Liquid Limit (Casagrande method) and sample preparation for determining soil plasticity characteristics. The Atterberg Test is a fundamental laboratory procedure used in geotechnical engineering to classify fine-grained soils and assess their consistency and behaviour at varying moisture contents. What this video demonstrates: ✔ Grinding soil to a uniform consistency ✔ Sieve separation of fine particles ✔ Mixing soil sample to required moisture content ✔ Liquid Limit testing using the Casagrande apparatus ✔ Creating the standard 13mm groove ✔ Counting the number of blows to closure The Atterberg Limits are critical for: • Soil classification (AS/NZS standards) • Identifying plasticity index • Determining shrink-swell potential • Assessing foundation performance • Supporting site classification reports Understanding soil plasticity helps engineers determine how soil will behave under load and moisture variation — essential for residential and commercial foundation design. Ideal Geotech provides professional geotechnical laboratory testing across NSW and Queensland, delivering accurate and compliant soil testing services. Geotechnical Testing Services 📞 NSW – (02) 9725 5522 📞 QLD – (07) 5537 8167 🌐 https://idealcorp.com.au/ For professional soil testing and site classification, contact Ideal Geotech. #AtterbergTest #AtterbergLimits #LiquidLimitTest #PlasticLimitTest #GeotechnicalEngineering #SoilTesting #Casagrande