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PROGRAMME

2016

RESEARCH & DEVELOPMENT PROGRAMME

CERIB’s Research & Development programme has two objectives: firstly, for the medium and long term, to improve understanding of the behaviour of products and materials, and to advance technological innovation; and secondly, to come up with reactive answers consistent with the expectations of manufacturers and their markets. It is important that the results of our research and development allow to find industrial applications or to contribute to standardization or regulations.

Our Research & Development topics are divided into 5 groups: sustainable development, fire and fire safety engineering, concrete technology, structural design, and standardization/certification.

Competitive-intelligence studies are conducted beforehand to check the interest of a subject and the issues surrounding it; an experimental study may be carried out subsequently.

Two further actions promote the results obtained:dissemination of knowledge and transfer of technology.

The 2016 programme consists of 64 Research and Development studies, 22 of which are new. The programme is the result of thinking engaged by precast concrete product manufacturers and members of the Technical and Scientific Committee. This exchange of ideas means that the concerns of all players-suppliers, administrative agencies, public-sector research and training bodies, inspection bodies, users of precast concrete products, etc.-are taken into account.

Of the 22 new studies in the programme:

> 7 directly pertain to sustainable development, > 2 relate to fire and fire safety engineering,> 1 concerns concrete technology,> 9 deal with structural design, and,> 3 concern the topic of standardization, certification, and quality

management.

A competitive-intelligence study into the circular economy has also been initiated. It will determine the issues and opportunities for the precast concrete products industry and highlight the advantages of these solutions for sustainable development.

BIM (Building Information Modelling) technology is also a part of the programme, with the objective of building a database of precast concrete products and systems which can subsequently be shared.

RESEARCH &DEVELOPMENT

Études et Recherches

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Études et Recherches

Concrete Expertise

GREEN CONCRETES

SUSTAINABLE DEVELOPMENT(19 STUDIES; 7 ARE NEW)

DURABILITY

2016 STUDY

2016 STUDY

2016 STUDY

2016 STUDY

Solutions for accelerating the hardening of binders based on blast-furnace slag: optimization and durability.

Protecting buildings against termite infestation - Solutions of the precast concrete products industry.

Effect of the protection crawl spaces provide with respect to the risk of reinforcement corrosion in coastal zones.

Adjustment of concrete cover in accordance with the durability performance of concretes.

OBJECTIVETo define and present the technical solutions of the precast concrete products industry for meeting French regulations concerning the protection of buildings from wood-destroying insects.

OBJECTIVETo quantify the effect the containment provided by crawl spaces has on the risk of corrosion of reinforcement in coastal areas.

OBJECTIVETo obtain data for demonstrating the durability performance of ‘concrete/cover’ pairs in precast concrete products.

OBJECTIVETo determine the conditions necessary for good durability with designs developed for accelerating the hardening of binders based on BFS (slag/cement mix with alkaline activation of the slag alone), and to optimize the solutions.

STUDY: Concrete recycling - National RECYBETON project and national research agency (ANR) ECOREB project

STUDY: Development of precast concrete products based on agro-sourced by-products

STUDY: Optimized of the hardening of concretes made with binary and ternary blended cements

STUDY: National PerfDub project – Performance-based approach to the durability of concrete structures - ANR MODEVIE project – Modelling of the ageing of concrete structures

STUDY: Interoperability of electronic tags cast into precast concrete products

STUDY: Chemical attack - Complement to guidelines for choosing exposure classes

ENERGY EFFICIENCY

2016 STUDY

ENVIRONMENT

Improving the representativity of calculation of the thermal performance of floors.

OBJECTIVETo improve consideration of the thermal performance of floors.

STUDY: Program for calculating the environmental impact of precast concrete building framing

STUDY: Contribution of precast concrete products to the environmental performance of buildings

STUDY: Evolution of the hygrothermal performance of building floors/walls

STUDY: Heavy partitions and upper floors in housing

STUDY: Performance of concrete solutions in thermal-performance calculation software

2016 STUDY

Contribution of blockwork to the environmental performance of houses.

OBJECTIVETo ensure the environmental performance of concrete masonry is correctly taken into account in the ADEME-CSTB-DHUP comparative study of construction systems for houses.

2016 STUDY

Creation and updating of EPDs for the precast concrete industry.

OBJECTIVETo obtain up-to-date environmental characteristics of precast concrete products.

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/ 05

FIRE / FSE(10 STUDIES; 2 ARE NEW)

2016 STUDY

2016 STUDY

Determining fire design scenarios for different building types.

FSE study : effect of aggregate on fire behaviour.

OBJECTIVETo define typical fire scenarios incorporating the combustible/non combustible nature of the structure, where applicable.

OBJECTIVETo assess the effect aggregate has on the fire performance of structural components.

CONCRETE TECHNOLOGY(6 STUDIES; 1 IS NEW)

STANDARDIZATION - CERTIFICATION – QUALITY MANAGEMENT (6 STUDIES; 3 ARE NEW)

2016 STUDY

2016 STUDY

2016 STUDY

Intensely black concrete slab.

Slip resistance of walking surfaces and stairs.

Non-destructive measurement methods for precast concrete products.

OBJECTIVETo develop concretes for intensely black through-coloured urban paving slabs using durable organic pigments.

OBJECTIVETo optimize assessment of the slip resistance of modular concrete products and stairs, appraised with the SRT pendulum.

OBJECTIVETo identify the non-destructive measurement methods that can be used for precast concrete products.

2016 STUDY

Drafting of standard NF DTU 23.5 (Block and beam floor systems).

OBJECTIVETo collate and supply all data of use for drafting standard NF DTU 23.5 (Block and beam floor systems).

STUDY: Consideration of continuity in the fire design of floors using floor plates

STUDY: Fire-break performance of smoke-exhaust and ventilation ducts

STUDY: Travelling fires: relevance of this fire models for large compartments

STUDY: Fire resistance of tall non-loadbearing masonry walls

STUDY: Fire performance of masonry walls

STUDY: Method for taking account of membrane effect in floors

STUDY: Fire propagation on insulated sandwich-panel façades

STUDY: Parametering of a digital model for assessing the fire performance of non-loadbearing solid panels

STUDY: Acoustic vibration of concrete

STUDY: Optimization of mix design of semi-dry concrete for block-making

STUDY: Optimization of certain characteristics of masonry units

STUDY: Facilitating use of very-high-performance concretes in precasting

STUDY: Permanent wall forms: properties resulting from core concretes

STUDY: Cracking of floorplate joints – Identification of first-order parameters for preventing disorders

STUDY: Recommendations for preventing internal sulphate attack – Test programme

STUDY: Determining the performance of drainage channels, bearing potential normative changes in mind

/ 07

STRUCTURAL DESIGN(23 STUDIES; 9 ARE NEW)

2016 STUDY

2016 STUDY

2016 STUDY

2016 STUDY

2016 STUDY

2016 STUDY

2016 STUDY

2016 STUDY

2016 STUDY

Effect of lattice-girder stiffeners on deformation of floors.

Acoustic performance of concrete blocks.

Database of the mechanical characteristics of concrete blockwork.

Design of floor systems subject to mechanical action due to thermal gradients.

Soil-retaining function of permanent wall forms for temporary works.

Characterization of lifting eyes in precast beams.

Study of punching shear in floorplate floor systems.

Clarification of standard NF EN 1992-1-1with respect to precast concrete products.

Justifications for using a visco-elastic material in pinned joints in seismic zones.

OBJECTIVETo demonstrate the effect of lattice-girder stiffeners on deformation of floors.

OBJECTIVETo substantiate and promote the acoustic performance of concrete blocks.

OBJECTIVETo provide a database of the characteristics of concrete blockwork for appropriate consideration of concrete solutions in design and construction standards.

OBJECTIVETo propose a method for designing components exposed to mechanical action due to thermal gradients.

OBJECTIVETo provide technical substantiation for using permanent wall forms as temporary excavation support.

OBJECTIVETo characterize the strength of lifting eyes cast into precast beams, taking various parameters into account.

OBJECTIVETo study the punching shear resistance of a floor system with floor plates by means of digital simulation, determining in particular the shear ratio at the precast concrete/in situ concrete interface.

OBJECTIVETo clarify some of the formulas in standard NF EN 1992-1-1 for application to precast concrete products.

OBJECTIVETo define the criteria to be met by the visco-elastic material and an experimental protocol for using the material in pinned joints in seismic zones.

STUDY: Acoustic performance and durability of noise bar-riers

STUDY: Low-frequency acoustic performance of concrete walls / floors

STUDY: Acoustic performance of concrete stairs

STUDY: Effects of taking account of transverse vehicle impact in Eurocode-based design of bridge superstructures with pretensioned precast beams

STUDY: Damping factor for dynamic analysis in Eurocode based design of railway bridges with pretensioned precast beams

STUDY: Protocol for measurement of transfer length in prestressed elements

STUDY: Evaluation of the shear resistance of floor systems with lattice joists

STUDY: Shear resistance of hollow-core slabs with topping

STUDY: Acoustic performance of floor systems using floor plates

STUDY: Performance of coatings on concrete-block masonry

STUDY: Mechanical characterization of unfinished (no concrete core) walls made with permanent forms

STUDY: Best-practice guidelines for masonry walls using concrete blocks

STUDY: Measurement and characterization of the thermal performance of masonry

STUDY: Verification of block and beam floor systems under seismic loading

2016 STUDY

OBJECTIVETo specify the issues and opportunities for the precast concrete industry. To identify the main actions performed by players in construction and engineering with respect to the issue of the circular economy. To bring together data for communication supports.

COMPETITIVE INTELLIGENCE (1 NEW STUDY)

Circular economy Issues and opportunities for the precast concrete industry.