November 2011 www.Agg-Net.com 11

Eren Construction have taken delivery of a newmobile washing plant for use on a major canalconstruction project in Turkey. The company is the

principal contractor for the final 63km section of a 221kmcanal which will take water from the Ataturk reservoirfor the irrigation of agricultural land in the east of Turkeyduring the hot summer months.On winning the project Eren Construction ventured

into aggregate production for the first time in an effortto reduce costs and increase control over the supplychain. The initial investment involved the purchase oftwo mobile crushing and screening plants, supplied byBorusan Makina. As the project developed it became clear that the

material being blasted and excavated on site, to bereintroduced to the canal construction project, neededwashing in order to be able to deliver the quality of sandand aggregates required for use in the civils.‘The dry crushing and screening process served our

purpose adequately in the early stages of the project,but as time went by we realized that washing was needed

due to the volume of silt and unwanted fines in theexcavated material,’ explained Deniz Eren of ErenConstruction. ‘The nature of the project required that thewashing plant be mobile, because it would need to bemoved every few months as the project progressestowards completion.’It was at this stage that Borusan Makina suggested

the M2500 mobile washing plant from CDE as the bestsolution for Eren Construction. ‘The M2500 offers themobility that we need while also ensuring that the sandand aggregates we produce are of the highest possiblequality, due to the very efficient removal of silts from thefeed material,’ said Deniz Eren.Eren Construction are one of the leading multi-

disciplinary construction companies in Turkey andhave a portfolio of many large civil engineering projects,including roads, viaducts, underpasses and sewagepipelines, as well as experience in residential andcommercial construction.The canal project represents the first time that the

company has been involved in the production of its �

CDE mobile washing plant proves successful on major canal projectin Turkey

Turkish Delight

12 www.Agg-Net.com November 2011

own sand and aggregate for use on a project. Prior tothis the company would have used large quantities ofriver-won aggregates, but new legislation in Turkeyrequired that they explore other avenues of supply.‘Carrying out the washing and screening in house hasbeen a big learning experience, but the new legislationmeans other aggregates projects are now inevitable, soit has been a positive step for the company,’ explainedYasar Eren, chairman of Eren Construction.The construction of the canal requires the blasting and

excavation of both limestone and basalt, and ErenConstruction estimate that approximately 13 millioncubic metres of material will be removed. The limestonewill be used as backfill to create the canal’s gradedslopes, while the basalt will be used in construction ofthe civils. ‘We needed to excavate the basalt to createthe canal, so it made sense, logistically, to use it foraggregates,’ said Yasar Eren.When complete, the canal will measure 10m in

width at the bottom with graded 12m banks on each sideallowing for a water depth of 6m.In addition to the two mobile dry crushing and

screening plants, and the M2500 mobile washing plant,there are a number of mobile concrete plants on site witha fleet of 10 truckmixers to deliver material to the

construction sites. The M2500, which is being fed at arate of 125 tonnes per hour from the dry crushing andscreening plant, is producing four products: a –4mmsand and –15mm +4mm, –22mm +15mm and +22mmaggregates.Once material has been delivered to the M2500 E4X

the feed conveyor discharges the material on to a double-deck ProGrade P275 rinsing screen fitted with wire meshon both decks. The +22mm material is removed by thetop deck while the bottom deck removes the –22mm+15mm; both of these products are stockpiled by theintegrated 9m wing conveyors.Meanwhile, the –15mm material is sent to the

integrated EvoWash sand washing plant where a splitscreen produces a –15mm +4mm aggregate and –4mmsand. Once again, both products are discharged tostockpiles via integrated conveyors. The CDEhydrocyclone technology employed on the EvoWashensures effective removal of the silts from within the feedmaterial, while the high-frequency dewatering of thesand ensures that it is discharged at 12% moisturecontent and can therefore be used in the production ofconcrete soon after production.In addition to processing the newly excavated material,

the M2500 will also be used to process some 60,000tonnes of material that was stockpiled on site pendingthe arrival of the new washing plant.‘The M2500 has been a very good solution for us,’

explained Deniz Eren. ‘Not only has it allowed useffectively to deal with the issue of excess fines in thedry screened material, but the mobility of the unit fitsin with the requirements of the project perfectly. Thewhole installation and commissioning of the newwashing plant was completed very professionally by CDEand, given the quality of the final products, this is aprocess that we will be using in future on other large civilprojects that we are involved with.’Commenting on the project, Iain Walker, CDE’s

sales manager for Turkey, said: ‘The application of theM2500 on this project provides evidence of its mobilityas well as demonstrating the ability of the unit to beemployed by contractors on large civil engineeringprojects for the production of their own sand andaggregates on site.’Eren Construction have also purchased an

EvoWash 71 sand washing plant and two EvoScreen C-series dewatering screens, which will be put to workwhen the project moves on to the next location.For further information visit: www.cdeglobal.com

Case Study

Eren Construction’s drycrushing and screening plantwith the CDE M2500 mobilewashing plant on the right

Close-up of the CDE M2500E4X washing plant with itsintegrated EvoWash unit