| Type of Sample / Test | Test Description | Standard | HOKLAS Accreditation | IAS Accreditation |
| Aggregate | Aggregate sampling | BS 812: Part 102: 1989 | Yes | - |
| CS3 : 2013 Section 8 |
| Aggregate | Particle size distribution | BS 812 : Section 103.1 : 1985 (AMD 6003) (by sieve analysis) | Yes | - |
| BS EN 933-1: 2012 |
| CS3: 2013 Section 10 (by sieve analysis) |
| Aggregate | Flakiness index | BS 812 : Section 105.1 : 1989 | Yes | - |
| BS EN 933-3: 2012 |
| CS3 : 2013 Section 11 |
| Aggregate | Elongation index | BS 812 : Section 105.2 : 1990 | Yes | - |
| CS3 : 2013 Section 12 |
| Aggregate | Methylene blue value | CS3: 2013 Section 13 | Yes | - |
| Aggregate | Los Angeles value (LA) | CS3 : 2013 Section 14 | Yes | - |
| Aggregate | Resistance to degradation of small size coarse aggregate by abrasion and impact in Los Angeles machine | ASTM C131-96 with modifications | Yes | - |
| ASTM C131-06 with modifications |
| ASTM C131/C131M-20 with modifications |
| Resistance to degradation of large size coarse aggregate by abrasion and impact in Los Angeles Machine | ASTM C535-96 with modifications | - |
| C535-16 with modifications |
| Aggregate | Aggregate impact value (AIV) | CS3: 2013 Section 15 | Yes | - |
| BS 812: Part 112: 1990 (Amd. 8772) |
| Aggregate | Ten per cent fines value (TFV) | CS3:2013 Section 16 | Yes | - |
| BS 812: Part 111: 1990 |
| Aggregate | Bulk density, voids and bulking | BS 812 : Part 2 : 1995 + Amd. 9195 & 10379 | Yes | - |
| Aggregate | Particle densities and water absorption | BS 812: Part 2: 1995 + Amd. 9195 & 10379 | Yes | -
|
| BS EN 1097-6:2013 Annex B |
| CS3 : 2013 : Section 17 |
| Aggregate | Moisture content - oven drying method | BS 812: Part 109: 1990 (oven drying method) | Yes | -
|
| CS3: 2013 Section 18 (by oven drying method) |
| Aggregate | Soundness test | BS 812 : Part 121 : 1989 | Yes | -
|
| CS3 : 2013 Section 19 |
| BS EN 1367-2 : 2009 |
| BS 6349 : Part 1 : 1984 Appendix B |
| Aggregate | Drying shrinkage | CS3 : 2013 : Section 20 | Yes | - |
| Aggregate | Clay, silt & dust content (Decantation method) | BS 812: Part 1: 1975 + Amd. 4875 (by decantation method) | Yes | - |
| Aggregate | Alkali silica reaction potential by ultra-accelerated mortar bar test | CS1 : 2010 Section 22 | Yes | - |
| Aggregate | Aggregate crushing value | BS 812 : Part 110 : 1990 | Yes | - |
| Aggregate | Shell content in coarse aggregates | BS 812 : Part 106 :1985 | Yes | - |
| Aggregate | Resistance of aggregates to fragmentation | BS EN 1097-2 2010 CI.5 | Yes | - |
| Aggregate | Determination of particle size distribution - sieving method | BS EN 933-1 : 2012 | Yes |
|
| Aggregate | Methylene Blue Value | CS3 : 2013 Section 13 | Yes |
|
| Aggregate | Compacting fraction value of aggregates for granular bed | General Specification for Civil Engineering Works, (2006) vol. 1 App 5.2 | Yes | -
|
| HKHA Specification library (2022) CI. DRA2.T250.9 - DRA2.T280.9 |
| General Specification for Civil Engineering Works, (2020) vol. 1 Appendix 5.2 |
| Aggregate | Determination of particle size distribution —air jet sieving method | BS EN 933-10 : 2009 | No | - |
| Soil | Sand equivalent value of soils and fine aggregates | ASTM D2419 - 14 | Yes | - |
| Aggregate | Sampling of aggregate on site | BS 812 : Part 102 : 1989 | Yes | -
|
| (including issuing of sampling certificate) | CS3 : 2013 Section 8 |
| Limestone | Moisture content of Limestone | BS 812 : Part 109 : 1990 | Yes | - |
| Aggregate | Bulk density | EN 1097-3 | No | - |
| Aggregate | Determination of particle density | ASTM C128-93 or BS 1377:1900 | No | - |
| Aggregate | Los Angeles index of coarse aggregate | BS EN 1097-2 : 2010 | No | - |
| Aggregate | Methylene Blue Value | BS EN 933-9:1999 | No | - |
| Aggregate | Moisture Content | BS EN 1097-5 : 2008 | No | - |
| Aggregate | Relative Gravity and Absorption of Fine Aggregate | ASTM C128-15 | No | - |
| Aggregate | Resistance to freezing and thawing | BS EN 1367-1 : 2007 | No | - |
| Aggregate | Sand equivalent | BS EN 933-8 : 1999 | No | - |
| Aggregate | Shell content | BS 812: Part 106: 1985 | No | - |
| Aggregate | Sieve Segregation Test | BS EN 12350-11 : 2010 | No | - |
| Aggregate | Simplified petrographic description | BS EN 932-3:1997 | No | - |
| Aggregate | Soundness test - 5 cycles per test | ASTM C88-90 | No | -
|
| (using sodium sulphate or magnesium sulphate) |
| Armour Rock | Average density | BS EN 13383-2 | No | - |
| Armour Rock | Water Absorption | BS EN 13383-2 | No | - |
| Fibre | Water content of Fibre | In-house method | No | - |
| Lightweight aggregate | Bulk Crushing Resistance | BS EN 13055 : 2016 Annex C | No | - |
| Lightweight aggregate | Determination of bulk crushing resistance | BS EN 13055-2016 Annex C | No | - |
| Lightweight aggregate | Fines Content | BS EN 13055 : 2016 & EN 933-1 | No | - |
| Lightweight aggregate | Grading | BS EN 13055 : 2016 & EN 933-1 | No | - |
| Lightweight aggregate | Particle Density | BS EN 13055:2016 & EN 1097-6 | No | - |
| Lightweight aggregate | Water Absorption | BS EN 13055:2016 & EN 1097-5 | No | - |
| Recycled sub-base material | Maximum metals and foreign material content | General Specification for Civil Engineering Works, Volume 1 Clause 9.47 (9) | No | - |
| Aggregate | Accelerated mortar bar test for the assessment of alkali reactivity of aggregate | RILEM TC 106-2 | No | - |
| Aggregate | Tests for mechanical and physical properties of aggregates - Methods for the determination of resistance to fragmentation Determination of resistance to fragmentation by the Los Angeles test method | BS EN 1097-2: 2020 Cl.5 | - | Yes |
| Aggregate | Tests for mechanical and physical properties of aggregates - Determination of the water content by drying in a ventilated oven | BS EN 1097-5: 2008 with modifications | - | Yes |
| Aggregate | Tests for mechanical and physical properties of aggregates - Determination of particle density and water absorption Wire basket method for aggregate particles passing the 63 mm test sieve and retained on the 31,5 mm test sieve | BS EN 1097-6: 2013 Cl.7 | - | Yes |
| Aggregate | Tests for mechanical and physical properties of aggregates - Determination of particle density and water absorption Pyknometer method for aggregate particles passing the 31,5 mm test sieve and retained on the 4 mm test sieve | BS EN 1097-6: 2013 Cl.8 | - | Yes |
| Aggregate | Tests for mechanical and physical properties of aggregates - Determination of particle density and water absorption Pyknometer method for aggregate particles passing the 4 mm test sieve and retained on the 0,063 mm test sieve | BS EN 1097-6: 2013 Cl.9 | - | Yes |
| Aggregate | Tests for general properties of aggregates - Methods for reducing laboratory samples | BS EN 932-2: 1999 (excluding Cl. 7 & Cl. 12) | - | Yes |
| Aggregate | Tests for geometrical properties of aggregates - Assessment of fines. Grading of filler aggregates (air jet sieving) | BS EN 933-10:2009 | - | Yes |
| BS EN 933-10:2009 modifications | - | Yes |
| Aggregate | Compaction Fraction Value of Aggregates for Granular Bed | Hong Kong International Airport General Materials & Workmanship Specification (GMWS) Issue. No. 5b (2019) Volume 1 Appendix A6.2 | - | Yes |
