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Sandvik Construction A world leader in Construction Module 1b Finished products.

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Presentation on theme: "Sandvik Construction A world leader in Construction Module 1b Finished products."— Presentation transcript:

1 Sandvik Construction A world leader in Construction Module 1b Finished products

2 2 Protective Equipment Assembly Point Emergency Exit Emergency Number Alarm 2 Safety is our top priority Safety first Sandvik Construction

3 Example plant  8 products  Railway ballast(#8)  0/5, low quality(#24)  0/2(#14)  2/5(#15)  5/8(#16)  8/11.2 (#17)  11.2/16 (#13)  16/22.4(#12) Sandvik Construction 3 Finished products Quality and specifications

4  A specification is a measurement that a certain product shall fulfill  In some specifications different degrees of quality are allowed. A better quality may achieve a higher price.  Aggregate specifications and qualities are stipulated in national and international norms. Norms & Standards  Gost - Normative frame body for CIS countries  CEN - Normative frame body for countries within EU and EFTA  ASTM - international norm body accepted partly or wholely by a number of countries.  Refer Professional RPG Section V  Pages for Test Methods  Pages for Specifications Sandvik Construction 4 Finished products Aggregate norms & standards

5  Size Fraction Limits Misplaced particles  Size Distribution  Shape  Flakiness  Elongation  Surface  Crushed Surface  Physical properties  LA-value  Micro-Duval  Chemical properties Sandvik Construction 5 Finished products Quality and specifications

6 Nominal Topsize D: 16 mm Smallest nominal size d: 11 mm Note:Maximum allowed particle size is D*2 = 32 mm Minimum allowed particle size is d/2= 5,6 mm D=16 D=11.2 d/2=5.6 2D=32 Sandvik Construction 6 Finished products Fraction size and limits Properties according to CEN

7 Misplaced Particles 10/15 Oversize: 10 % Undersize: 15 % Fraction 11-16: Oversize Undersize Sandvik Construction 7 Finished products Fraction size and limits Properties according to CEN

8 Sandvik Construction 8 Finished products Size distribution Product grading has to remain within two defined grading boundaries Example here are separate gradings for two sand specifications. Will also apply to 32 x 0mm sub-base.

9 a.cubicity (length = thickness = width) b.flakiness (length / thickness) c.elongation (length / width) Length Width Thickness a b c Finished products Shape Properties according to CEN

10 Shape index (L/T 1:3) Flakiness index (W/T 1:1,6-2) Sandvik Construction 10 Finished products Shape Properties according to CEN

11  Flakiness  F.I.—Thickness (T) must not be less than 0.6 x mean particle size(MPS)  e.g.10 x 5mm has MPS 7.5, Min T<4.5mm  Elongation  E.I.--Maximum length (ML) must not exceed 1.8 x mean particle size  e.g.10 x 5mm has MPS 7.5, ML>13.5mm Sandvik Construction 11 Finished products Shape Properties according to British Standards

12  Los Angeles  Micro Duval  Nordic drum test -kulkvarn micro-Duval Los Angeles Drum dimension: 200 x 154 mm (  x l) Charge: 2 kg 10 mm steel balls Sample: 500 g mm Water: 2,5 l MD Coefficient: amount produced <1,6 mm Drum dimension: 711 x 508 mm (  x l) Charge: 4,7 kg 45 mm steel balls Sample: 15 kg mm DRY LA Coefficient: amount produced <1,6 mm Sandvik Construction 12 Finished products Drum tests

13 …are a quality measurement for finished aggregates …result is dependendent on both raw material and the method of producing the aggregate. Example: LA test on NF material from Jaw  LA initial: 23  LA after VSI:17 Note: according to CEN the quality is increased by three classes Sandvik Construction 13 Finished products Drum tests

14 Sandvik Construction 14 Finished products Aggregate uses

15 Elongated / flaky Sub-base (0-90 mm) Asphalt wearing course Base course (0-45 mm) Asphalt base course cubical Finished products Aggregate uses Importance of cubical shape

16 The largest extracted and processed material’ Common uses  Cement  Asphalt  Railway ballast  Ready mix  Structural fill  Road base Sandvik Construction 16 Finished products Aggregate uses Limestone

17 Sandvik Construction 17 Finished products Aggregate uses Tough rocks Basalts, granites,etc. Common uses  Asphalt  Surface dressing  Railway ballast  Block making  Sea defence  Road base

18 Sandvik Construction 18 Finished products Aggregate uses Sand & gravel Extracted from both land & sea Common uses  Asphalt  Ready mix concrete  Mortar  Block making  Roof tiles  Drainage material  General fill materials

19  natural sand  manufactured sand  blended sand Sand for concrete is normally 0/4 or 0/5 mm in size, with demand on PSD Sandvik Construction 19 Finished products Aggregate uses Sand

20 Finished products  Most aggregates used are crushed material fractioned and proportioned  Fraction limits are basically the same for most blends but regional differences are common.  Aggregate properties affected by the C&S process are basically; size, shape and durability.  Each country has it’s own or adopted specification & norms. Become familiar with those in your area of responsibility Sandvik Construction 20 Finished products Aggregate uses Summary

21 Sandvik Construction A world leader in Construction


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