Guides - Drilltech

Glossary of soil, asphalt and concrete testing terms

Road construction quality control: tests for each layer

DCP test: penetration index, layer thickness and CBR

Asphalt degree of compaction: why cores come out low

How to read a borehole log: SPT, RQD and core recovery

Allowable bearing pressure and settlement explained

Atterberg limits and plasticity index of clay soils

Cracks in a house: ground or structure?

Concrete cubes and cylinders: curing and 7/28-day strength

Does concrete coring damage an existing building?

How to read and verify a DrillTech test report

Aggregate testing: grading, Los Angeles, methylene blue, shape