Bio-aggregates Based Building Materials : State-of-the-Art - download pdf or read online

By Sofiane Amziane, Florence Collet

ISBN-10: 9402410309

ISBN-13: 9789402410303

ISBN-10: 9402410317

ISBN-13: 9789402410310

The paintings of the RILEM Technical Committee (TC -236 BBM) used to be devoted to the examine of development fabrics made up of plant debris. It thought of the query no matter if construction fabrics containing as major uncooked fabric recyclable and simply to be had plant debris are renewable.

This e-book contains a state of the art record and an appendix. The state of the art document pertains to the outline of vegetal aggregates. Then, hygrothermal houses, fireplace resistance, sturdiness and eventually the influence of the variety of the tactic of creation of bio-based concrete are assessed. The appendix is a TC file which provides the adventure of a operating team. The aim used to be to outline trying out equipment for the size of water absorption, bulk density, particle measurement distribution, and thermal conductivity of bio aggregates. The paintings relies on a primary around robin try of the TC-BBM the place the protocols in use via the various laboratories (labs) are in comparison. p>

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Additional resources for Bio-aggregates Based Building Materials : State-of-the-Art Report of the RILEM Technical Committee 236-BBM

Sample text

7 Chemical Interactions Between Bio-aggregates and Mineral Binders The literature about bio-aggregate based building materials highlights the chemical interactions that can occur between lignocellulosic particles and mineral binders. These interactions can take place at different times: – at early age, they can disturb the setting and hardening mechanisms of mineral binders, – in the hardened state, they can modify the properties of the composite, – in the long term, they can influence the durability of the material.

5 R matrix. After three 22 C. Magniont and G. Escadeillas Fig. 13 Photograph taken after 3 days of hydration of cement paste with two kinds of plant aggre-gate inclusion: one particle of shiv (arrow 1 and 2 indicate sampling points of FT-IR analy-sis) (a); pellet made of shiv powder (b) (Diquelou et al. 2015) days of hydration, the authors carried out FT-IR analysis. This showed the formation of a halo surrounding the hemp particle and corresponding to some non-hydrated cement (see Fig. 13). To complete the analysis, they proposed a new method based on the use of a labelled flax pellet enriched with carbon-13 isotope (13C).

2005). The number of glucose units in a cellulose molecule is referred to as the degree of polymerization (DP) and, the average DP of cellulose in natural fibres is around 10,000. This characteristic can significantly affect the mechanical performance of the fibres. Cellulose contains regions that are highly crystalline or amorphous depending on their packing density. Most wood-derived cellulose contains more than 65% of crystalline regions (Rowell et al. 2005). Accessible and non-accessible cellulose can also be distinguished (Rowell et al.

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Bio-aggregates Based Building Materials : State-of-the-Art Report of the RILEM Technical Committee 236-BBM by Sofiane Amziane, Florence Collet

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