CDK has developed such applications of recycled eco-slag as roadbed material, eco-stone-mat environmentally-friendly embankment material, reSuta-eco porous landscaping pavement material, and eco-road porous landscaping pavement material.

Roadbed material

Molten eco-slag

Molten slag is held in a slag yard after crushing and grain-sizing.

Pavement field testing

From Nov 1997 to Nov 1999

Execution		Falling-weight deflection test

Tests performed and observations in field application testing

Test	Method	Time of Execution				Follow-up Testing				Observations
		Subgrade	Lower layer	Upper layer	Surface layer	4 mo	6 mo	12 mo	24 mo	2loc /1section
CBR	Design CBR	○								2loc /1section
In-situ density	JISA1214		○	○						2loc /1section
Plate loading	JISA1215		○	○						2loc /1section
Flexure	Benkelman beam test				○	○	○	○	○	2loc /1section
	Falling-weight deflection				○			○	○	4loc /1section
Flatness	3m profile meter				○	○	○	○	○	1obs /1section
Rutting	Lateral profile				○	○	○	○	○	2loc /1section
Cracking	Maintenance guidelines					○	○	○	○	Once per survey

eco-stone-mat embankment material

Slag employed

Super-slow-cooled to assure strength

Applications

Stones fixed to mat after rounding and splitting stones

Embankment work on the Sawauchi river in Yamagata prefecture

Public space development on the Tsukinuno river in Yamagata prefecture

In execution		On completion		2 years after completion

Shibukawa channel formation in Miyagi prefecture

reSta-eco porous landscaping pavement material

reSta-eco features a base of thermoset plastic and acrylic resin binder, which give it strength and make it able to withstand heat and less susceptible to discoloration over time.

Applications

Space in front of Kamakura city hall

Hokota Ecopark

eco-road porous landscaping pavement material

eco-road features porous asphalt below and is coated directly onto asphalt as a resin, making it simple to apply in any form.

Applications

Kashima RDF center

Route 124