Global Patent Index - EP 2844798 A4

EP 2844798 A4 20160824 - METHOD AND APPARATUS FOR DETERMINING STIFFNESS OF A ROADWAY

Title (en)

METHOD AND APPARATUS FOR DETERMINING STIFFNESS OF A ROADWAY

Title (de)

VERFAHREN UND VORRICHTUNG ZUR BESTIMMUNG DER STEIFIGKEIT EINER FAHRBAHN

Title (fr)

PROCÉDÉ ET APPAREIL POUR DÉTERMINER LA RIGIDITÉ D'UNE CHAUSSÉE

Publication

EP 2844798 A4 20160824 (EN)

Application

EP 13772090 A 20130405

Priority

  • US 201261621259 P 20120406
  • US 2013035504 W 20130405

Abstract (en)

[origin: WO2013152321A1] An apparatus for the compaction of roadway materials includes a compaction analyzer for calculating stiffness during construction of the roadway. The apparatus generates a dynamic modulus for each layer of a roadway which can be used to calculate the overall effective modulus. A method for determining stiffness includes generating a dynamic modulus for each layer and calculating the overall effective modulus using the modulus of each layer.

IPC 8 full level

E01C 19/28 (2006.01)

CPC (source: CN EP US)

E01C 19/23 (2013.01 - US); E01C 19/28 (2013.01 - US); E01C 19/288 (2013.01 - CN EP US)

Citation (search report)

  • No further relevant documents disclosed
  • See references of WO 2013152321A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2013152321 A1 20131010; CN 104364445 A 20150218; EP 2844798 A1 20150311; EP 2844798 A4 20160824; US 2015030392 A1 20150129

DOCDB simple family (application)

US 2013035504 W 20130405; CN 201380029906 A 20130405; EP 13772090 A 20130405; US 201314390936 A 20130405