First International Conference on Bio-based Building Materials
June 22nd - 24th 2015
Clermont-Ferrand, France
XIII
Table of contents
RILEM Publications and Reports ... V Sponsors... X International Scientific and Technical Committee ... XI Plenary speakers ... XI Preface ... XII
Chp 1 - Materials
Natural fibers ... 17
Coir - Traditionally used fibres for new construction applications ... 18
Bio based concrete with crushed rape straw, a good alternative to develop an affordable bio based concrete for construction and renovation ... 23
Development of guadua angustifolia prefabricated panels ... 31
The effect of sodium hydroxide surface treatment on the tensile strength of cellulose nanofibre ... 36
Effect of sheep wool fibres on thermal-insulation and mechanical properties of cement matrix ... 40
Nonwoven flax fiber mats and white portland cement composites for building envelopes ... 46
Effect of zirconates and silanes treatments on the physical and mechanical properties of flax fibers for applications in cementitious composites ... 52
Basalt fiber as reinforcement for lime-based mortars ... 57
Rammed earth ... 63
Mechanical characterization of natural fibre-reinforced earth plasters ... 64
Numerical modeling of rammed earth constructions: analysis and recommendations ... 72
Development of a self-compacted clay based concrete - Rheological, mechanical and environmental investigations ... 80
Mechanical properties of unstabilized earth compressed at high pressures ... 85
Investigation into the shear behaviour of rammed earth using shear box tests... 93
Eco-friendly binders with low CO2-emission and low embodied carbon energy ... 99
Mode of operation of polysaccharide stabilising agent in cement based systems and interactions with superplasticisers ... 100
Lime activation of fly ash in mortar in the presence of metakaolin ... 107
Properties of alkali activated mortars with combinations of different starting materials ... 111
Humins as promising material for producing sustainable polyssacharide-derived building materials ... 116
Influence of simulated desuphurised waste on the pore size distribution of cement pastes at 28 days of curing ... 122
The effect of glucose on the hydration kinetics of ordinary portland cement ... 126
Effect of curing condition on shrinkage reducing property of self-consolidating concrete with different expansive admixtures ... 132
Desulphurised residues effect on the porosity and pore size distribution of cement based pastes during the early ages of curing ... 138
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Chp 2 - Characterization
Biodurability of bio-based building materials ... 141
Study the development of mould on prompt natural cement-based hemp concrete ... 142
Use of bio-based insulation materials in buildings: Modelling of hygrothermal conditions in use – Resistance of a wood fibre material to moulds according to climatic conditions ... 149
Properties of bio-based insulation materials and their potential impact on indoor air quality ... 156
Study of the microbial development impact on bio-based materials ... 164
Bio-based foam for thermal insulation. Valorisation of CNSL (cashew nut shell liquid) ... 168
Permeability and thermal conductivity of pre-cast lime and hemp concrete ... 173
Development of microorganism sampling methods on bio-based earth products intended for healthy, sustainable buildings ... 182
Performance of biobased insulation board from crop by-products and natural gums ... 189
Durability and performance of bio-construction materials ... 197
Assessment of the durability of bio-based insulating materials ... 198
Durability studies on lightweight plaster and straw fiber based material for building thermal insulation ... 203
Efficiency of high performance concrete types incorporating bio-materials like rice husk ashes, cassava starch, lignosulfonate, and sisal fibres ... 208
Protein-based biomaterials for temporary construction ... 215
Impact of hygrothermal ageing of low-density polyethylene/short flax fibre composites on the multi-scale properties. ... 220
Mechanical performances of bio-based building materials ... 227
Comparing hemp composites made with mineral or organic binder on thermal, hygric and mechanical point of view. ... 228
Investigation of mechanical performances of insulating building materials based on rice husk and hemp hurd ... 235
Experimental investigation on the performance of hybrid hemp-flax composite materials ... 243
Effect of sugarcane bagasse fibre on the strength properties of soil blocks... 251
Development of polymer-reinforced flax fibre for the strengthening of reinforced concrete. ... 257
Hemp concrete using innovative pozzolanic binder ... 265
Effect of various moisture content on the mechanical and viscoelastic properties of giant reed Arundo donax L. ... 271
Performance of clay-straw plasters containing natural additives ... 275
Study of lime and hemp concrete (lhc) – Mix design, casting process and mechanical behaviors . 281 Design and properties of mortar with seashells fine aggregates ... 289
Performance of a hybrid concrete structure with natural fibre reinforcements ... 295
Enhancement of lime-hemp concrete properties using different manufacturing technologies ... 301
Investigation of the mechanical performance and drying shrinkage of hemp concrete ... 309
Bacterial calcification in cement pastes and mortars containing mineral admixtures ... 316
Characterization of live, dead, starved, and heat-treated S. pasteurii cells: implications for biomineralization in construction materials ... 324
Application of soil bacteria to improve compressive strength of portland cement ... 331
RRT3: Statistical analysis of hemp concrete mechanical properties variability ... 334
The use of wool as fiber-reinforcement in cement-based mortar ... 341
Investigation of performance tests using bio-derived/chemical additives ... 347
A novel pull-out device used to study the influence of pressure during processing of cement-based material reinforced with coir ... 355
Effects of shell element on shelled compressed earth masonry units ... 363
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Rheological and mechanical behavior of earth materials / starch mixes ... 368
Effects of seashell aggregates in concrete properties ... 376
Effect of wetting and drying cycles on the interface of natural fibers with a portland cement based matrix ... 383
An orthotropic incremental model for the hydromechanical behaviour of softwood ... 389
Effect of calcined nanoclay on microstructural and mechanical properties of chemically treated hemp fabric-reinforced cement nanocomposites ... 395
Investigating the strain rate-dependent compressive properties of fiber-reinforced soy-based polyurethane foams ... 400
Compressive and shearing behavior of lime and hemp concrete ... 405
Probabilistic improvement of crack propagation monitoring by using acoustic emission: application to wood components ... 412
Investigation of the mechanical performance and weathering of hemp concrete ... 416
Design of mechanically enhanced concrete using hemp shiv ... 422
Fracture analysis of wood under variable environment ... 427
Acoustic of bio-materials ... 429
Impact of the water content of hemp concretes on their thermal and acoustical properties ... 430
Mechanical and acoustical behavior of starch-hemp bio-composite materials ... 437
In situ damage monitoring in timber materials: acoustic emission pattern recognition approach based on Hilbert–Huang transform ... 445
Acoustical characterization and modelling of agricultural by-products for building insulation ... 449
Hygroscopic and hygrothermal properties of bio-materials ... 454
Moisture buffer potential of wall assemblies incorporating hemp-lime ... 455
Evaluation and application of Opuntia ficus-indica panel ... 460
3D X-ray tomography for the hygrothermal characterization of spruce wood... 467
Measurement of the hygrothermal properties of straw-clay mixtures ... 474
A new treatment to reduce wood hydrophilicity ... 480
Comparative study of hygrothermal performances of straw-clay and vertically perforated clay brick buildings ... 488
Influence of cellulose pulp fiber addition on the hydration of cementitious pastes with silica fume . 496 Bamboo panels to control moisture level of buildings ... 504
Moisture properties of rape straw concrete and hemp concrete ... 510
Influence of straw content on the mechanical and thermal properties of bio-based earth composites ... 517
Water transfers in hemp concrete followed by nuclear magnetic resonance ... 523
Formulation of binder to improve mechanical properties of hemp concrete at early stage. Effect on thermal and hygric properties in use. ... 526
Experimental and numerical evaluation of the hygrothermal performance of a hemp-lime building 534 Effect of compaction on moisture buffering of hemp-lime insulation ... 542
Hysteresis phenomenon in hemp concrete ... 547
Heat transfer of dowelled and bolted steel-to-timber connections exposed to fire: Experimentation and numerical modeling ... 555
Hygrothermal behavior of a hemp concrete wall: experimental and numerical study of coating ... 560
Effect of temperature on thermal and hygric properties of hemp-lime plasters ... 567
Experimental study of the hygrothermal behaviour of hemp shives-based precast blocks at material and wall scales ... 575
Life cycle assessment of bio-based building materials ... 583
A systematic methodology for sensitivity analysis in life cycle thinking context applied to hemp-based insulation products for buildings ... 584
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Environmental performance of north american wood panel manufacturing ... 592
Environmental impacts of agro-sourced materials compared to traditional materials into building . 599 Advances in research methodologies and biomaterials testing ... 604
Development of a laboratory test method to assess the resistance of bio-based insulation materials against moulds ... 605
The “NatuRALiMe” project: New insights into the study of hemp-based mortars for new construction and heritage conservation ... 613
Characterization of hemp aggregates – Comparison of several size analysis ... 619
On the mechanical characterization of a sunflower-based biocomposite using the grid method .... 624
Optimizing the design of timber components under decay and climate variations ... 629
Effect of testing variables on the hydration and compressive strength of lime hemp concrete ... 635
Indoor air emission tests of natural materials ... 641
Chp 3 - Applications
Green Applications ... 644Thermal and hydrological modeling of green roofs: Application to stormwater management assessment ... 645
Environmentally friendly vege-roofing tile: an investigation study ... 649
Impact of green roof in building energy performance: experimental and numerical study ... 654
Evaluation of micro-concrete fibre reinforced roofing tiles with scm ... 661
A new load-bearing insulation material made of cattail ... 666
Preliminary study on use of terrazyme as a bio stabilizer along with cement and lime in compressed stabilized earth blocks ... 674
Particleboard with coir fiber and sugar cane bagasse: thermal-physical-mechanical properties .... 682
Sensitivity analysis of parameters influencing building heating energy consumption using hemp-lime material ... 687
Wood-strand sandwich panels for panelized construction ... 695
Re-use of quarry fines for the production of blocks ... 698
100% biobased particleboards based on new agricultural wastes ... 705
A review of recycled use of post consumer waste paper in construction ... 711
Comparative environmental life cycle assessment of vegetative roofs: A case study from lebanon ... 718
Social Issues ... 720
Sustainable building with local material: a case study ... 721
GROW2BUILD - Local cultivated hemp and flax as resource for biobased building materials ... 727
Which techniques and strategies employ to foster new local commodity chains for bio-based materials? Results of a multidisciplinary scientific research ... 733
Sustainability assessment of industrialized bamboo solutions for housing programs in the Philippines ... 739 Index of authors ... DCCXLVII
