Technical documentation and pavement testing methodology explaining standard, uncontroversial civil engineering science.
On 6 October 2026, UMLAB Sarawak made a technical visit to the Civil Engineering Laboratory at Universiti Malaysia Sarawak (UNIMAS) in Kota Samarahan, including a discussion session with Dr. Ron Aldrino Chan.
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On 1 October 2026, a team from Dal HCM Sdn Bhd visited our civil engineering laboratory in Kuching for a tour of the testing facilities.
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On 21 July 2026, officers from the Agricultural Engineering Division of the Department of Agriculture Sarawak visited our civil engineering laboratory in Kuching for a briefing and a tour of the testing facilities.
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On 21 July 2026, officers from the Kuching Division of the Public Works Department Sarawak (JKR Sarawak) visited our civil engineering laboratory in Kuching for a briefing and a tour of the testing facilities.
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What the needle penetration and ring-and-ball softening point tests measure, how penetration grades such as 60-70 and 80-100 are defined, and why binder consistency matters in Sarawak's climate.
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What the Clegg hammer measures, how an Impact Value is obtained on site, where it fits alongside density and CBR testing, and what can skew the readings.
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How the dynamic cone penetrometer gives a continuous strength profile of pavement layers and subgrade, how penetration rate relates to in-situ CBR, and where the DCP fits compared with the Mackintosh probe.
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How the pull-off test measures the tensile strength of a concrete surface and the bond strength of repairs, overlays, and coatings, and why the failure mode matters as much as the number.
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How the British pendulum tester measures skid resistance (BPN), how the sand patch test measures macrotexture depth, and why a safe wet road needs both kinds of surface texture.
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How ultrasonic pulse velocity testing checks the uniformity of concrete without damaging it, how readings are taken, and why UPV is a comparison tool rather than a strength test.
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How the Marshall method is used to design asphaltic concrete under the JKR road works specification: specimen preparation, stability and flow, volumetric analysis, and choosing the design bitumen content.
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How the plate bearing (plate loading) test works, what the load-settlement curve tells you about subgrade, fill, and foundation soils, and the limits of what a small plate can show.
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How the sand replacement method measures the in-place density of compacted earthworks and road layers, how relative compaction is calculated, and what can go wrong in the field.
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The basic laboratory tests that tell engineers what kind of soil they are dealing with: moisture content, liquid and plastic limits, and particle size distribution, and how the results are used.
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What the tensile, bend, and rebend tests on reinforcing bar actually check, how the B500A, B500B, and B500C grades under MS 146:2014 differ, and why site samples are tested at all.
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How axle load surveys measure vehicle and gross vehicle weight at weigh stations to support pavement design, maintenance planning, and legal load limit enforcement.
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An in-depth look at Cold In-Place Recycling (CIPR) methodology, comparing cement vs. emulsion stabilization, and when to specify it for failed pavement rehabilitation.
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How Pavement Condition Assessment (PCA) identifies surface and structural distresses to optimize highway maintenance schedules.
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How the Mackintosh probe works, how blow counts are recorded and interpreted, and where this light dynamic penetrometer fits in a soil investigation in Sarawak.
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Analyzing the practical differences between laboratory (soaked vs. unsoaked) and in-situ CBR testing for subgrade structural evaluation.
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Understanding standard compliance verification methods for concrete structures, from casting cubes to non-destructive rebound hammers and core extraction.
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How Aggregate Crushing Value (ACV), Aggregate Impact Value (AIV), and Flakiness Index dictate the longevity of road construction base courses.
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