Chhun Kean Thai - ឈុន គានថៃ

What is ground improvement?

Ground improvement refers to a set of engineering techniques used to enhance the strength and performance of weak or unstable soils. The key benefits include:

- Increased bearing capacity
- Reduced settlement
- Liquefaction mitigation
- Enhanced foundation stability
- Minimal spoil generation
- Less invasive and disruptive construction

References:
-Nicholson, P.G., 2014. Soil improvement and ground modification methods. Butterworth-Heinemann.

The 15th Scientific Day at the Institute of Technology of Cambodia (ITC), held in conjunction with the Regional Workshop on Science-Policy Dialogue for Plastic Waste.

In-situ tests commonly used for soil investigation include pe*******on tests (SPT, CPT, DCPT), the vane shear test (VST), the dilatometer test (DMT), and the pressuremeter test (PMT). In Cambodia, SPT, CPT, and DCPT are most commonly used.

Cut and Fill

Cut and fill is a construction process that levels ground by cutting material from high areas and using it to fill low areas.

Reference Document:
Look, B.G., 2022. Earthworks: theory to practice-design and construction. CRC Press.

Speedy Moisture Tester: ASTM D4944 (2018) or AASHTO T217 (2002)

The Speedy Moisture Tester is a portable device used for determining the moisture content of soils (fine, sand, and fine aggregates).

Reference Standard:
- ASTM D4944, 2018: Standard Test Method for Field Determination of Water (Moisture) Content of Soil by the Calcium Carbide Gas Pressure Tester.
- AASHTO T217, 2002: Standard Method of Test for Determination of Moisture in Soils by Means of a Calcium Carbide Gas Pressure Moisture Tester.

ឧបករណ៍ Benkelman Beam គឺជាឧបករណ៍វាស់សមុតរបស់ផ្លូវនៅក្រោមអំពើនៃបន្ទុកកង់រថយន្ត ដែលអាចឱ្យយើងវាយតម្លៃលទ្ធភាពទ្រទ្រង់របស់តួថ្នល់ និងកម្រាលផ្លូវទាំងអំឡុងពេលសាងសង់ និងក្រោយពេលសាងសង់ ព្រមទាំងអាចផ្តល់ទិន្នន័យសម្រាប់ធ្វើការពង្រឹងស្រទាប់ផ្លូវបន្ថែម (Overlay Thickness Design) ផងដែរ។

ឯកសារយោង៖
- CTM-350៖ ការវាស់សម្រុតដោយប្រើធ្នឹមសម្រុតចល័ត
-​ G3.001:2024៖ គោលការណ៍ណែនាំបច្ចេកទេស ការវាយតម្លៃលទ្ធភាពទ្រទ្រង់របស់ស្រទាប់ផ្លូវដោយប្រើឧបករណ៍ BENKELMAN BEAM