SoilTech Mk. III Poly­mer Sta­bi­lizer Saves Sig­nif­i­cant Road Con­struc­tion Cost

NBM&CW - - SOIL STABILIZER -

South Africa-based Poly­roads dis­trib­utes its en­tire range of Smart Ma­te­ri­als, in­clud­ing its flag­ship SoilTech Mk. III sta­bi­lizer for road con­struc­tion, through lo­cal part­ner Kaveri Ul­tra Poly­mers in In­dia

SoilTech Mk. III is a third gen­er­a­tion nano poly­mer binder used for sta­bi­liz­ing soil and im­prov­ing its strength and, thereby, the road’s sta­bil­ity. It was specif­i­cally de­vel­oped for mine haulroad stabilization, where ex­ces­sive load­ing oc­curs and where all-weather roads are re­quired. This tech­nol­ogy is now used in com­mer­cial road de­sign.

SoilTech Mk. III sta­bi­liz­ing poly­mers are elas­tomers that gain strength from me­chan­i­cal com­paction and do not be­come brit­tle when cured. The elas­tomers are flex­i­ble in na­ture and al­low cer­tain amount of flex un­der load, and do not be­come brit­tle un­like ce­ment stabilization. They do not crack un­der ex­ces­sive load­ing, an as­pect that re­duces layer work in de­sign phases. In most cases, the soil in the area can be used for stabilization. In­situ ma­te­ri­als, which would nor­mally be clas­si­fied as un­us­able or waste ma­te­ri­als, can be trans­formed into suit­ably mod­i­fied ag­gre­gates for use in base and sub­base layer con­struc­tion.

SoilTech Poly­mers are at the fore­front of bind­ing mar­ginal soils and turn­ing th­ese ma­te­ri­als into use­able road con­struc­tion ag­gre­gates. The prod­uct has been tested with in- situ ma­te­ri­als in var­i­ous parts of the world, and ex­ten­sively uti­lized in base and sub-base stabilization. De­signed to pen­e­trate the road’s base layer and into the sub-base layer via cap­il­lary ac­tion and bind the loose par­ti­cles to one another, it pro­vides strength and co­he­sion.

The nano poly­mers are 0.5µm in size and are far more ef­fec­tive in coat­ing and bind­ing ag­gre­gates. When mixed with wa­ter, they act as a means of trans­port and fa­cil­i­tate the poly­mer in coat­ing the soil par­ti­cles. Once the wa­ter dis­perses, the poly­mers in­ter­lock and form a bond which gains strength un­der me­chan­i­cal com­paction. The greater the com­paction, the bet­ter the bind­ing.

Sta­bi­lized roads are opened to traf­fic 24 hours af­ter con­struc­tion. The knead­ing ef­fect of ve­hi­cle traf­fic fur­ther ac­cel­er­ates the evap­o­ra­tion process of the sur­fac­tants and co­a­lesc­ing so­lu­tions sur­round­ing the poly­mer chains. The poly­mers start bind­ing when ex­posed to air and the sur­fac­tant (aided by an al­co­hol mix) starts to evap­o­rate.

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