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POLYMER ROAD T ECHNOLOGY

POLYMER ROAD T ECHNOLOGY. Present by Geoplus and TerraBest corporation. 1. STABILIZATION. 1.1 What is stabilization?

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POLYMER ROAD T ECHNOLOGY

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  1. POLYMER ROAD TECHNOLOGY Present byGeoplus and TerraBestcorporation

  2. 1 STABILIZATION • 1.1What is stabilization? • A process in which small quantities of additive(s) is used and added to the existing materials which can significantly improve the normal engineering properties of soils, crushed rocks and gravels e.g. CBR, permeability and strength ec. • . • 1.2How to carry out stabilization? • * Usually carry out in-situ • * Sometimes in a centralized processing plant Soil Soil + Cement Soil+Cement+Polimer 1

  3. 1 STABILIZATION (Cont.#1) 1.3Advantages * Minimal use of chemical * Efficient & rapid construction * Reduced energy consumption * Environmentally sound * Existing materials can be used * Reduces susceptibility to water * Well proven process 2

  4. 2 POLYMER 2.1What is Polymer ? * A water soluble white milky viscous liquid which is neutral and non-toxic * Chemically, a polymer-based mixture composes of latex and cellulose dispersed in water * A German Chemical Group formulation in origin * A world-wide patented product Other physical properties are : 3

  5. 2 POLYMER (Cont.#1) 2.2What polymer is used * A polymer mixture for use in soil-stabilization * An additive to improve the performance of soil-stabilization through modification of their properties * Enhance modulus of elasticity, flexibility, strength characteristics and durability * Experience and track records confirmed it to be a beneficial modifier of soil-stabilization 4

  6. 2 POLYMER (Cont.#2) 2.3Modification of soil- stabilization by Polymer * Cyclic load(repetitive & reversal) from traffic caused fatigue failures in pavement * Above factors render original soil-stabilization less suitable today * Conventional soil-stabilization susceptible to sulphate attack and proved inappropriate for clayey soils containing excessive fines(> 35% passing the No. 200 sieve) and of high plasticity (P.I. > 10) * All these suggest modification(s) to original soil-stabilization is necessary in order to meet critical needs of pavements today * Tests by renown laboratory, full-scale test pavements and in-service pavements have confirmed the suitability of RENOLIT as a modifier 5

  7. 2 POLYMER (Cont.#3) 2.4How Polymer modify Soil-Stabilization? * Increase modulus of elasticity through connecting cement-coated soil particles by numerous ‘micro- rubberbands’ * The water-holding nature is useful during curing process * Protect soil-stabilization against harmful effects of chemical compounds in soil, e.g. sulphate * Prevent penetration and capillary rise of water within soil-stabilization * Reduce the effects of moisture migration – a major cause of pavement deterioration 6

  8. 2 POLYMER (Cont.#4) Soilparticles Soilparticles Cement Harmful soil chemicals Polymer “micro rubberbands” PolymerCoating 7

  9. 2 POLYMER (Cont.#5) Shortage of water in conventional soil stabilization during curing Cracks ! Soil Cement Base course RC-Soilsovercome water shortage problem during curing No Cracks ! Polymer water storage 8

  10. 2 POLYMER (Cont.#6) Free capillary rise of water Blocked capillary rise of water PC-SoilsSurface Soil-Cement Surface Micro pores Capillary action (bleed) in Normal Soil Cement Reduced bleeding in PC-SOILS 9

  11. In-situ Soil Cement(3-7% by wt. Of dry soil) Polymer (5-10% by wt. Of cement) 2 POLYMER (Cont.#7) 2.5What is polimer modified soil-cement ? Adding 5% POLIMER (by weight of cement) will produce a mixture on site which upon compaction and curing will harden to give an impermeable durable structural slab with high elastic modulus & flexibility and at the same time possesses improved compressive and tensile strength characteristics to resist today’s critical load conditions experience by pavements.Acronym “PC-SOILS” = PC-Soils 10

  12. 3 STEPS FOR CONSTRUCTION OF POLIMER ROAD PAVEMENT START * Soil Test Required : 1.Natural Moisture Content 2.Grain Size Distribution 3.Atterberg Limits 4.Sulphate Content 5.Organic Content 6.Compaction Test (Modified Proctor Method) 7.Durability Test 8.Compression Strength Test SITE INVESTIGATION& SOIL SAMPLINGS LABORATORY SOIL TESTING * PEAT RESULTS END NO PEAT DESIGN ** ** Design Method Used : Equivalent Thickness Method (TA) - Pavement Design CONSTRUCTION FINISH 11

  13. Step 1 : Spot marked for cement placement according to the designed ratio • Step 2 : Spreading the required amount of Portland cement • Step 3 : Roughly mixing cement and existing soil by graders • Step 4 : Homogenously mixing soil and cement by soil stabilizer 4 ROAD CONSTRUCTION PROCEDURE BY SOIL STABILIZER 12

  14. Step 5 : Spraying the mixture of Renolith and water on the construction Step 6 : Mixing soil-cement and the mixture of Renolith and water by grader Step 7 : Compaction each layer to the required density Step 8 : Compaction with Pneumatic tyre rollers and smoothing with Tandem rollers 4 ROAD CONSTRUCTION PROCEDURE BY SOIL STABILIZER (Cont.#1) 13

  15. 5 ROAD CONSTRUCTION PROCEDURE BY RECYCLING MACHINE Step 2 : Load Renolith mixture and Portland cement as designed ratio into the soil stabilizer machine Step 1 :Mark the stabilized area Step 3 : Run the soil stabilizer machine over the existing base material Step 4 :Mix the existing material with cement and Renolith mixture to the designed thickness 14

  16. 5 ROAD CONSTRUCTION PROCEDURE BY RECYCLING MACHINE (Cont.#1) Step 6 :Cure the Renolith base with water for 3-7 days Step 5 :Compact the stabilized area by the roller compactors to the required CBR Step 7 :The Renolith surface after completed Step 8 : Density test by sand replacement 15

  17. 6 ROAD CONSTRUCTION PROCEDURE BY GRADER MACHINE Step 2 :Putting the suitable volume of cement Step 1 :Grading the constructing area Step 3 : Spread the Portland cement all over the surface Step 4 :Mixing soil and cement properly 16

  18. 6 ROAD CONSTRUCTION PROCEDURE BY GRADER MACHINE (Cont.#1) Step 6 :Mix Renolith and Water to Soil-Cement Properly. Step 5 :Spray the mixing of Renolith and water. Step 7 :Smoothing the surface by grader and compacting the road. Step 8 :The Renolith road surface 1 day after construction. 17

  19. 7 ROAD CONSTRUCTION PROCEDURE BY MIXING PLANT Step 2 : Mixing Renolith with water at mixing plant. Step 1 : Sub-grade appearance after completely leveling and compacting. Step 3 : Dumpers are waiting for Ready-mixed Renolith from the continuous mixing plant. Step 4 : Ready-mixed Renolith flow onto Dumper. 18

  20. 7 ROAD CONSTRUCTION PROCEDURE BY MIXING PLANT (Cont.#1) Step 6 : Paving the Renolith-soil-cement by Paver. Step 5 : Pour the blend from Dumper to Paver. Step 8 : Surface appearance of second layer after curing. Step 7 : Compacted by vibrating roller compactor. 19

  21. CONCLUSIONS 7 • POLIMER modified soil-cement (or RC-Soils) are a well proven soil stabilization process. In essence, it is a mixture of pulverized soil, RENOLIT admixture, cement and water which when compact, cure and harden will turn into a durable structural material. • A change in today’s traffic loading conditions as compared to previous; notably high traffic volume and heavy axle load have rendered modification of the conventional soil-cement most necessary, if not a must. • The technique is appropriate for new pavement construction, pavement rehabilitation and recycling works for maintenance. 20

  22. CONCLUSIONS (Cont.#1) 7 By optimizing and improving the engineering properties and performance (e.g. Load carrying capacity, elastic modulus and thus fatigue resistance and permeability and thus dimensional stability) of local materials available on site (e.g. Soil, crushed rocks and gravel) so that they can be efficient, economical and durable this method lessen the dependence and reliance on outside imported quarry products and/or borrowed soil materials during pavement construction. Consequently, it represents not only a time saving solution but also an environmental sustainable & friendly construction and maintenance approach. 4. 21

  23. CONCLUSIONS (Cont.#2) 7 Although partial mechanization, a seemingly more affordable method, is suitable for less trafficked rural roads or construction in remote areas, full mechanization is preferred in the construction of major highways and runways or the like structures where better homogeneity is achieved through more efficient mixing process and also higher and more predictable output capacity are realizable. In brevity, effective RC-Soils stabilization treatment requires specialized stabilization or recycling equipment, engineering know-how, an understanding of materials and quality systems. All these are necessary to ensure that desired design outcomes are achieved. 5. 22

  24. 8 PROJECT REFERENCE Acapulco Highway, Mexico 24

  25. 8 PROJECT REFERENCE Bicycle Track ,Thailand 25

  26. 8 PROJECT REFERENCE Car Parking, Thailand 25

  27. 8 PROJECT REFERENCE Highway No.1003, Thailand 26

  28. 8 PROJECT REFERENCE Rehabilitation Road ,Bangkok 27

  29. 8 PROJECT REFERENCE Farm Entrance Road,Malaysia 28

  30. 8 PROJECT REFERENCE Road Construction ,GHANA 29

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