Table 3602/1 CRUSHED STONE BASE AND SUBBASE: …

1 Table 3602/1 CRUSHED STONE BASE AND SUBBASE: MATERIAL REQUIREMENTSM aterialTYPE OF MATERIALC haracteristicG1G2G3 ParentSound rock from an approvedSound rock, bouldersSound rock, boulders orMaterialquarry, or clean, sound mineor coarse gravelcoarse gravelrock from mine dumps, or cleansound bouldersOnly fines CRUSHED from the May contain UP toMay contain UP to 15% by same sound parent rock may be10% by mass of mass of approved natural finesADDITIONAL added for grading correction approved natural finesnot obtained from parent that added fines shallnot necessarily Added fines shall have a LL. nothave a LL. Not exceeding 25 andobtained from parentexceeding 25 and a PI not PI not exceeding 4rock. Added fines exceeding shall have a exceeding 25 andPI not exceeding 6 STRENGTH10% Fines Aggregate Crushing Value (10% fact), determined in accordance with TMH1method B2, shall be not less than the appropriate value in Table 3602/2, column 3.

2 TheAggregate CRUSHED value(ACV), determined in accordance with TMH1 method B1, shall not exceed the appropriate value in the 3602 material shall comply with the requirements in columns 3,4 and 5 of Table 3602 INDEXF lakiness Index, determined in accordance with TMH1 method B3, shall not exceed35 on each of the -26,5 + 19mm fraction and the -19 + 13,2mm faces shall be fractured facesFor CRUSHED materials at least 50% by mass of the FACES fractions retained on each standard sieve andlarger shall have at least one fractured faceFractionLL. Shall not exceed not Shall not exceed 25(mm)PI shall not exceed 5PI shall not shall not exceed 6LS shall not exceed 2%In addition the LS shall not exceed 3%Atterberg-0,425In addition the arithmetic meanarithmetic mean ofIn the case of calcrete the PI Limitsof the PI's for a lot (min 6 tests)the PI's for a lot (minshall not exceed 8shall not exceed tests) shall not(% passing sieve)exceed 4, LS shall not ,075 The PI shall not exceed 12.

3 If the PI exceeds 12 the If chemical modification ismaterial shall be chemically modified. After chemicalrequired, the PI of the -0,075mmmodification the PI of the minus fractionfraction after modification shallshall not exceed 8not exceed SALTSSee additional requirementsNOMINAL MAXIMUM26,5mmSIZEN ominalPercentage passing sieve, byPercentage passingPercentage passing sieve,aperturemasssieve, by massby masssize ofsieve(mm)37,526,5100 GRADING19,085 - 9513,271 - 844,7542 - 602,0027 - 450,42513 - 270,075 5 - 12 COARSE SANDS hall not be less than 35% and Shall not be less thanShall not be less than 35% and 4 - 12 4 -12 4 -1223 - 4023 - 4023 - 4011 - 2411 - 2411 - 2459 - 7559 - 7559 - 7536 - 5336 - 5336 - 5384 -9484 9484 9471 - 8471 - 8471 - 8437,5mm37,5mm37,5mm100100100 RATIO (see definitionshall not exceed 50% in respect35% and shall not shall not exceed 50% in respectin SUBSUBCLAUSEof the target gradingexceed 50% in of the target (c)(i)(5))respect of the targetgradingCOMPACTIONM inimum of 88% of apparentMinimum of 85% of 98% or 100% of modified REQUIREMENTS relative relative density (as specified)

4 Table 3402/1 REQUIREMENTS FOR TYPES G4 TO G6 MATERIALSPROPERTYN atural gravel, or natural gravelNatural gravel, orNatural gravel, or natural gravelDESCRIPTION OFand boulders which maynatural gravel andand boulders which may MATERIAL require crushingboulders which may require crushing, or CRUSHED require crushing, rockMay contain approved additionalMay contain approvedMay contain approved natural ADDITIONAL FINES fines not obtained from parent natural fines not fines not obtained from parent rock. Added fines shall have aobtained from parent limit (LL.) not and a plasticity(PI) not NOMINAL MAXIMUM(i) Uncrushed material:53mm(i) Uncrushed (i) Uncrushed material:SIZE material: 63mm(ii) CRUSHED material:37,5mm orTwo thirds of the compacted (unless otherwise specified(ii) CRUSHED material:layer thickness(unless otherwise in the project specifications) 53mm beforespecified in the the project compaction(unlessspecifications) otherwise specified in the project(ii) CRUSHED material.)

5 Specifications)63mm before compaction (unless otherwise specified in the project specifications)FLAKINESS INDEXF lakiness index, determined inaccordance with the TMH1 method B3, shall not exceed 35 on each of the -26,5 + 19mmfraction and the -19 + 13, and colluvial gravels shallAlluvial and colluvialFACESbe CRUSHED so that at least 50%gravels shall be by mass of the fractions retainedcrushed so that aton each standard sieve 4,75mmleast 50% but. Mass and any larger shall have at leastof the fractionsone fractured on each standard sieve 4,75mand any larger shallhave at least one fractured passing throughsieve by massNominalCrushed materialapertureNominalNominalUncrusheds ize ofmaximummaximum materialsieve(mm)size sizeThe percentage by37,5mm26,5 mmmass passing the53,01002,00mm sieve shallTYPES OF MATERIALG4G5G637,510085-100not be less than 20%26,584-94100-nor m re than 70%.

6 19,071-8485-9560-9013,259-7571-84-4,7536 -5342-6030-652,0023-4027-4520-500,42511- 2413-2710-300,075 4-12 5-12 5-15 grading & smaller & equal GM smaller(GM)GM smaller & & equal (a) All materials except(a) All materialsPI shall not exceed 12 or acalcrete:except calcrete:value equal to 2 times the GMLL. Shall not exceedplus 10, whichever is the higherATTERBERG LIMITSLL. Shall not exceed 2530, shall not exceed 5%.FOR NATURALPI shall not exceed 6PI shall not notIn the case of calcrete the PIMATERIAL (-0,425LS shall not exceed 3%.exceed not exceed 15 provided theFRACTION)LS shall not exceedLS does not exceed 6% and(b) Calcrete:5%.(% passing 0,425mm sieve)LS greater than Greater than 25(b) Calcrete:PI greater than 8LL. greater than 30(%) passing 0,425mm sievePI greater than 15LS greater than 170LS greater than 6(% passing 0,425mmsieve) LS greater 320 The material shall comply withMudrock shall haveMudrock shall have a wet 10%DURABILITYthe requirements in Table 3402/3a wet 10% FACTFACT value of not less than value of not less than80kN, and a wet/dry Venter test90kN,and a wet/dryclass of I or test class ofI or IISOLUBLE SALTSCBR at 98% of modifiedCBR AT 95% ofCBR at 95% of modifiedSTRENGTH (CBR)AASHTO density shall not be modified AASHTOAASHTO density shall not be less than 80%density shall not beless than 25%.

7 Less than 45%SWELL (Maximum)Swell at 100% of modified Swell at 100% ofSwell at 100% of modifiedAASHTO density shall not modified AASHTOAASHTO density shall not exceed 0,2% for all materialsdensity shall notexceed 1,0%.except calcrete for which theexceed 0,5%.swell shall not exceed 0,5%.COMPACTION98% or 100% (as specified) ofThe density requirements of the layer in which theREQUIREMENTS modified AASHTO density formaterial is used, shall be applicable.(See subclausenatural (b).) In restricted areas the in situ dry density ofgravel material shall comply with the requirements inthe project FOR TYPES G7 TO G9 MATERIALSPROPERTYDESCRIPTION OFNatural material (soil, sand orNatural materialNatural material (soil, sand orMATERIAL gravel)(soil, sand or gravel)gravel)ADDITIONAL FINESNOMINAL MAXIMUM(i) Uncrushed material: twoTwo thirds of theTwo thirds of the compactedSIZE thirds of the compacted compacted layer layer thickness.

8 Layer (ii) Uncrushed material:75mmThe materials shall comply with the requirements of clause OF MATERIALG7G8G9 Not applicableNot applicableNot applicableGRADINGMODULUS (GM)equal LIMITSThe PI shall not exceed 12 or a The PI shall not The PI shall not exceed 12 or a FOR NATURAL value equal to 3 times the GM exceed 12 or a valuevalue equal to 3 times the GM MATERIAL(0,425mmplus 10, whichever is the higher equal to 3 times theplus 10, whichever is the higher FRACTION) plus 10, the case of the calcrete the PIever is the higher In the case of the calcrete the PIshall not exceed 17 not exceed 17 providedthat the LS does not exceed 7%In the case of that the LS does not exceed 7%and calcrete the PI shall(% passing0,425mm sieve)not exceed 17 LS greater than that the LS does not exceed 7%DURABILITYM udrock shall have a wet 10%Mudrock shall have aMudrock shall have a wet 10%FACT value of not less thanwet FACT value ofFACT value of not less than60kN, and a Venter test not less than 60kN,60kN, and a Venter test class of I, II or a wet/dry Venterclass of I, II or class of I, II SALTSSTRENGTH (CBR)CBR at 93% of modifiedCBR at 93% of CBR at 93% of modifiedAASHTO density shall be atmodified AASHTO AASHTO density shall be atleast 15%density shall be atleast 7%least 10%SWELLS well at 100% of modifiedSwell of 100% ofSwell at 100% of modified(MAXIMUM)

9 AASHTO density shall not modified AASHTO AASHTO density shall not exceed 1,5%density shall not exceed 1,5%exceed 1,5%COMPACTION The density requirements of the layer in which the material is used, shall be (See subclause 3402(b).) In restricted areas the in situ dry density of gravel materialshall comply with the requirements in the project 3402 / 3 DURABILITY REQUIREMENTS FOR G4 MATERIALGROUPMEMBERS OF THE GROUPDURABILITY MILL%PASSING 0,425mm SIEVE INDEX (MAXIMUM)AFTER THE DURABILITY MILLTEST (MAXIMUM)Basic crystalline rockHigh silica rockSandstonethan 15%)MudrockCarbonater rockTilliteDolomitenot applicablenot applicableLimestoneMarbleGreywacke12535 SiltstoneMudrock12535 PhyliteShale (increase from original not m reSandstoneChert42035 Hornfels(clay mineral kaolin) smaller equal GM smaller equal GM smallerThe materials shall comply with the requirements of clause materialTable 3402/4 REQUIREMENTS FOR GRAVEL WEARING COURSEM aximum size, mmOversize Index (Io) (maximum)

10 , %Shrinkage product (Sp) grading coefficient (Gc) CBR at smaller & equal to 95% modifiedAASHTO Compaction(soaked value)(minimum), %Io = Oversize Index (per cent retained on 37,5 mm sieve)Sp = Linear shrinkage x (per cent passing 0,425mm sieve)Gc = (Per cent passing 26,5mm - per cent passing 2,0mm) x per cent passing 4,75 mm /100 Note: All the parameters in Table 3402/4 are defined in TRH 20 Table 3402/5 REQUIREMENTS FOR CHEMICALLY STABILIZED PAVEMENT LAYERSCRITERIAC3C4 Material before treatmentAtterberg limits after treatmentDesign strength (Mpa)(Laboratory unconfined strength)(a) at 100% of modified minimum:1,5minimum: 0,75 AASHTO densitymaximum:3maximum: 1,5(b) at 97% of modifiedminimum:1minimum: 0,5 AASHTO densitymaximum:2maximum: 1 Indirect tensile strength at 100%Minimum:250 Minimum :200modified AASHTO density(kPa)Durability: Fines lostAll characteristics, including amongst others the carbonated values with regard Wet - dryto durability, shall comply with the requirements in the project - thawminimum : 4minimum : 2maximum : 6maximum : 4 Slightly plasticSlightly plasticPI shall not exceed 6minimum : 6minimum : 3maximum : 12maximum : 6smaller and equal to 15smaller and equal to 15C1C2At least G2 qualityAt least G4 qualityAt least G6 qualityGreater and equal to 50100-365(maximum of 240 preferable)100-24016-3416-34 PARAMETERLIMITTYPE 1 TYPE 237,537,5 Calcrete48040 FerricreteSilcret