C OLLECTION TECHNIQUE C I M B É TO N

T 30
English version

COMPARATIVE STUDY IN ROAD ENGINEERING SOIL TREATMENT VS UNBOUND GRANULAR MATERIALS

Graphic method for environmental and economic comparison

SOIL TREATMENT VS UNBOUND GRANULAR MATERIALS
TREATED SOIL PLACEMENT IMPACT AGGREGATES PLACEMENT IMPACT

4

8

3

7

Treated soil (cm)

35 60 50 40 4 5 6 30 20 10 7 8 9 Binder proportion (%)

90 80 1 2 10 20 30 40 50 60 70 80 90 100 110 120 130 140

70 3

Aggregates (cm) 50 10 20 30 40 50 60 70 80 90 180 160 140 120 100 80 60 40 20 Equivalent distance (km)

2
BINDER IMPACT PRODUCTION + TRANSPORT

1
DRY DENSITY OF MATERIAL TO BE TREATED

5
MATERIALS TRANSPORT IMPACT

6
AGGREGATES EXTRACTION AND PRODUCTION IMPACT

© J. ABDO - CIMBÉTON

COMPARATIVE STUDY IN ROAD ENGINEERING SOIL TREATMENT VS UNBOUND GRANULAR MATERIALS

Graphic method for environmental and economic comparison

This document was written by Joseph ABDO, road manager - CIMBÉTON, French cement association, and approved by the following Working Group: Ludovic CASABIEL David CUINET Frédéric DIDIER Patrick DUBOIS Antoine GARRIDO Jean-Chrisrophe REDON CIMENTS VICAT LAFARGE CIMENTS HOLCIM CIMENTS CIMENTS CALCIA CIMENTS CALCIA LAFARGE CIMENTS

2

Foreword

commercial or logistical use, prior design and building of a specific road transport platform of minimum bearing capacity is necessary, allowing construction of the actual pavement structure.

● To build roads, motorways, airport areas or any other area development for industrial,

Building the specific platform, which relates to road earthworks, consists in carrying out levelling works (cuttings and embankments) and building a structural layer referred to as « capping layer ». Cutting, embankment and capping layer works may be performed using one of the two following techniques: • The technique of unbound granular materials, which consists in using granular materials from gravel pits or quarries, • The