Study of lime hemp composite precasting by compaction of fresh mix -- An instrumented die to measure friction and stress state - Archive ouverte HAL Access content directly
Journal Articles Powder Technology Year : 2014

Study of lime hemp composite precasting by compaction of fresh mix -- An instrumented die to measure friction and stress state

Abstract

This paper deals with the processing of lime hemp composite blocks by compaction. A rigid compression die has been developed to reach relatively high compression pressure. This has been fitted with force and strain transducers to measure the stress state during compaction. It provides some means of understanding the effect of mix design and stress level on the compressibility and homogeneity of hardened composites. It is shown that moisture globally increases both friction and packing compressibility. Proper moisture content and paste-to-shiv mass ratio (P/S) can be chosen to reduce the heterogeneity. The combination of friction at wall level and stress transmission is the most detrimental for a moisture content of 20% and a P/S = 1.
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Dates and versions

hal-00986988 , version 1 (05-05-2014)

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Pierre Tronet, Thibaut Lecompte, Vincent Picandet, Christophe Baley. Study of lime hemp composite precasting by compaction of fresh mix -- An instrumented die to measure friction and stress state. Powder Technology, 2014, 258, pp.285-296. ⟨10.1016/j.powtec.2014.03.002⟩. ⟨hal-00986988⟩
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