Guides
Measuring Tack Coat Shear Strength On Australian RoadsA tack coat is a thin bituminous emulsion layer placed between asphalt lifts or between an existing pavement and a new overlay. Its purpose is simple: create…Modified Proctor Compaction for Heavy Traffic Subgrade DesignHeavy traffic pavements depend on a subgrade that can carry repeated wheel loads without excessive rutting, shear deformation or loss of support. Modified…Why freeze-thaw testing matters for brick pedestrian walkwaysBrick and paver walkways are expected to remain safe, level and attractive through years of rain, frost, heat, foot traffic and maintenance. Their durability…Calibrating An Extension Test Frame To Laboratory StandardsAn extension test frame applies a controlled tensile or pulling force while measuring displacement, elongation, or extension in a specimen. It may be used with…Measuring Sand Filtration Coefficient With Falling Head TestsThe falling head permeability test measures how readily water moves through a sand layer under a controlled hydraulic gradient. It is commonly used to…Using CBR to design unsealed maintenance roadsUnsealed maintenance roads are essential for reaching drainage assets, utility corridors, construction sites, farms, forestry blocks and remote infrastructure.…Alkali-aggregate reactivity testing for durable concreteAlkali-aggregate reactivity (AAR) testing checks whether an aggregate can react with alkalis in concrete and produce damaging expansion. The most familiar…Measuring geotextile water flow in drainage trenchesHydraulic conductivity testing measures how readily water passes through geotextile filter fabric used in drainage trenches while soil particles are retained.…Verifying Concrete Bridge Barrier Thickness with Ultrasonic PulsesAustralian bridge projects rely on concrete safety barriers for edge protection, median separation and containment around motorway ramps and elevated link…Unconfined compression tests for cohesive soil slope stabilityRoads, bridges and drainage corridors frequently depend on stable ground beside them. A cut slope can obstruct a highway, a saturated embankment can undermine…