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Research and Development

Cerib Research and Development initiatives are aligned with the principles of both immediate support for precast concrete product manufacturers, through short-term studies, and anticipation of future requirements through medium and long-term research into construction solutions and the associated resources. Some of this work involves inventorying the state of the art, both in France and internationally, and is supported in this by our internal intelligence endeavours.

Cerib Research and Development is divided into 5 fields:
sustainable development
fire and fire-safety engineering (FSE)
concrete technology
structural design
standardization and certification

 

Topics

Research programmes conducted as part of doctoral studies illustrate the long-term commitment to research that involves public-sector bodies such as universities, laboratories, etc., and private-sector bodies (the precast concrete products industry in particular).

Eco-friendly concrete for precast products : acceleration of the hardening of ternary binders

08/12/2019
réf. 471.E
By Marjorie Petitpain

This study is part of the action program of the French Concrete Industry; it aims finding innovative solutions of concrete with low CO2 emissions impa…

Keywords: accélération, eco-friendly concrete, Hardening, ternary binders

Biobased components in concretes

07/18/2019
réf. 429.E
By Carine Lachaud, Suzanne Le Thierry

Biobased materials are materials derived from biomass of plant or animal origin. This report offers an overview of biobased materials used today in t…

Keywords: biobased materials, biomass, hemp concrete, wodd fibers concrete

Quality of realisation of the joints between floor plates

07/18/2019
réf. 456.E
By François Jacquemot

A concrete floor plate system is composed of a juxtaposition of floor plates. Between the floor plates lies a small play that is filled with a joint. …

Keywords: cracking resistance, floor plate system, joint, strain

Minimum insulation concrete upper flange thickness values of beam-and-block floor systems under 60 minutes in standard fire exposure

05/29/2019
réf. 433.E
By Armand Leroux, Caroline Morin, Matthieu Scalliet

This document deals with insulation criterion I for beam-and-block floor systems (with non-resisting blocks or semi-resisting blocks) including a dist…

Keywords: beam-and-block floor systems, compression slab, fire exposure, flange thickness

Thermal bridges of light weight inside partitions through low floors – Complement to TH-U 5/5 rules

05/17/2019
réf. 478.E
By Bernard Barthou

This study, carried out jointly by CERIB and AFIPEB, determine the linear thermal losses of light weight inside partitions through slab-on-ground floo…

Keywords: lightweight partition, TH-U 5/5, Thermal bridge, thermal loss

Punching of floor slabs

03/13/2019
réf. 454.E
By Armand Leroux, Matthieu Scalliet

French standard NF EN 1992-1-1 clearly defines the rules for dimensioning slabs with regard to punching. It also allows to verify shear at the interfa…

Keywords: BNTRA EC2, floor slab, precast slab, punching

Improvement of the performance of precast concrete in hughly aggressive environment

01/09/2019
réf. 382.E
By François Jacquemot, Jonathan Mai-Nhu, Mohamad Hajj Chehade, Pauline Barthélémy

Improvement of the performance of precast concrete in hughly aggressive environment Preventing the consequences of the presence of hydrogen sulph…

Keywords: environnement agressif, produits en béton

Reduction factor attributed to concrete compressive strength ƒcd

11/30/2018
réf. 443.E
By Matthieu Scalliet, Natalia Khoder

Reduction factor attributed to concrete compressive strength ƒcd The current version of Eurocode 2 NF EN 1992-1-1 and its National Annex are curren…

Keywords: beam under flexion, compressive strength, dimensionning, Eurocode 2, prestressed element, Rüsch effect

Modifications to the additional rules applied for precast concrete elements

11/30/2018
réf. 444.E
By Matthieu Scalliet, Natalia Khoder

Modifications to the additional rules applied for precast concrete elements  : Chapter 10 (EN 1992-1-1 :2004) and Chapter 13 (CEN/TC 250/SC 2 N 1358) …

Keywords: changing transfer/anchor length formula, concrete tensile strength, Eurocode 2, hollow slab, prefabricated element

Jetting resistance of concrete pipes

07/12/2018
réf. 432.E
By Sophie Jacob, Thibaut Le Doeuff

Jetting resistance of concrete pipes The report 400.I V2 « Jetting resistance of pipes: state of the art » has provided data on high pressure clean w…

Keywords: concrete pipe, jet power, jetting resistance, nozzle