Hot remixing

Technical guide – Hot remixing

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Références

Ever-increasing economic and environmental constraints arepushing road professionals to take an interest in potential naturalmaterial deposits that exist in pavements being demolished orrenovated.

Techniques known as hot remixing, hot reforming or repaving aregrouped under the single term of in situhot remixing.

This termgroups all the in situbituminous asphalt recycling operations byheating, pavement scarification, mixing with or without additions and re-laying the mix.

Description

Ever-increasing economic and environmental constraints arepushing road professionals to take an interest in potential naturalmaterial deposits that exist in pavements being demolished orrenovated.

Techniques known as hot remixing, hot reforming or repaving aregrouped under the single term of in situhot remixing.

This termgroups all the in situbituminous asphalt recycling operations byheating, pavement scarification, mixing with or without additions(aggregates with or without pre-coating, binders, additives, etc) andre-laying the mix.

Sommaire

Contents

Contents............................................................................................................................................... 5

Why in situ hot remixing?..................................................................................................................7

Equipment ........................................................................................................................................... 8

Pre-heaters ....................................................................................................................................... 8

Scarification/mixing and laying machines ..................................................................................... 10

First type ................................................................................................................................. 10

(Figure 3) comprises, apart from new heating panels ............................................................ 10

Second type.............................................................................................................................. 11

(Figure 4) differs from the first through its type of cohesion breaker and its mixing method. 11

Third type ................................................................................................................................ 13

(Figure 5) is identical to the second for the cohesion breaking and mixing, with in addition 13

Laying ............................................................................................................................................ 13

Preliminary studies........................................................................................................................... 14

Characterization of materials in situ.............................................................................................. 14

Processing study............................................................................................................................. 15

Formulation testing ........................................................................................................................ 15 Inspections......................................................................................................................................... 17

Scope .................................................................................................................................................. 18

Performances and behavior ............................................................................................................. 20

Sensitive points ................................................................................................................................. 22

Future of the technique .................................................................................................................... 23

Appendix 1 ........................................................................................................................................ 25

Rejuvenating agents ......................................................................................................................... 25

Appendix 2 ........................................................................................................................................ 27

Sample formulation studies ............................................................................................................. 27

Study consistency........................................................................................................................... 27

Actual study scenarios, examples .................................................................................................. 27

Preliminary survey .................................................................................................................. 28

Objectives of the special technical specifications ................................................................... 29

Correcting agents.................................................................................................................... 29

Hot remixing study .................................................................................................................. 29

Preliminary survey .................................................................................................................. 33

Formulation study ................................................................................................................... 34

Comments................................................................................................................................ 35

Site........................................................................................................................................... 36

Preliminary survey .................................................................................................................. 37

Studies ..................................................................................................................................... 37

A few test results...................................................................................................................... 38

Détails
Titre
Technical guide – Hot remixing
Réf. Cerema
410A
Catégorie de produit
Ouvrage
Nombre de pages
39 pages
Référence
SKU1915124285
Numéro ISRN
EQ-SETRA--07-ED29—FR+ENG
Editeur
Cerema (ex-Setra)
Auteur collectif
Cerema
Date de parution
Nombre de pages
39 pages
Langue de la publication
Anglais
Type d'auteur
Oeuvre collective

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Technical guide – Hot remixing
Réf. Cerema
410A
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