{"id":3157,"date":"2025-05-26T14:53:14","date_gmt":"2025-05-26T14:53:14","guid":{"rendered":"https:\/\/craterre.org\/?post_type=avada_portfolio&p=3157"},"modified":"2025-05-26T14:53:14","modified_gmt":"2025-05-26T14:53:14","slug":"typha","status":"publish","type":"avada_portfolio","link":"https:\/\/craterre.org\/en\/case\/typha\/","title":{"rendered":"Typha"},"content":{"rendered":"
\n
\n
\n
\n
\n

Objectives<\/h1>\n<\/div>\n
\n
\n

CRAterre's task is to develop building materials using soil and a plant fiber derived from the Typha australis plant, then to start distributing them with a view to contributing to greater energy efficiency in Senegal's buildings, and reducing CO2 emissions.<\/p>\n

The objectives of CRAterre's mission are fourfold:<\/p>\n

    \n
  • An identification of the Senegalese context and a state of the art on the use of plant fibers in construction.<\/li>\n
  • An experimental component based on the identification results, with several seminars to present the results;<\/li>\n
  • A demonstration component, including the training of future material producers and the construction of an eco-pavilion to showcase the various Terre-Typha materials developed;<\/li>\n
  • An application section, providing for the implementation of various actions to disseminate the results more widely.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
    \n
    \n
    \n

    All over the world, the scientific community and builders are showing increasing interest in the use of natural fibers to reduce the energy impact of the construction and use of buildings. Typha australis reed is one such resource, with its very fine internal honeycomb structure offering particularly interesting potential. In Senegal, this reed is tending to invade the Senegal River and Lac de Guiers (Dakar's main source of fresh water). It has even become a major ecological problem. As a result, a great deal of research has been launched to try and transform this nuisance into a sustainable resource. Among other things, this is the aim of the PNEEB\/Typha program, in which CRAterre is actively involved, which aims to produce insulating materials in and for Senegal using Typha soil and fibers.
    PNEEB is Senegal's national program to reduce greenhouse gas emissions through energy efficiency in the building sector.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

    \n
    \n
    \n
    \n
    \n
    \n

    The activities that have been carried out include :<\/p>\n

    \u2013 Une premi\u00e8re mission d\u2019identification du contexte s\u00e9n\u00e9galais, pendant laquelle une \u00e9quipe de quatre experts de CRAterre a \u00e9t\u00e9 d\u00e9ploy\u00e9e afin d\u2019analyser les diff\u00e9rentes typologies d\u2019habitat dans la r\u00e9gion de Dakar et de juillet 2014 Saint-Louis. Cette \u00e9tude a port\u00e9 sur les diff\u00e9rents mat\u00e9riaux de construction disponibles, les mati\u00e8res premi\u00e8res locales (nous avons pu identifier des<\/p>\n

    examples of clays that could be used for materials), local techniques and know-how, and to make contact with a number of economic players working in the field of earth construction, energy efficiency or Typha harvesting (Economic Interest Groups).<\/p>\n

    \u2013 Un processus de recherche et d\u00e9veloppement sur diff\u00e9rents types de produits \u00e0 base de Typha seul et de m\u00e9langes Typha-terre. Pour ces derniers, le processus va de la recherche des formulations possibles (choix des terres, \u00e9laboration de diff\u00e9rents broyats de Typha, proportions de terre et de Typha) \u00e0 celle des m\u00e9thodes et outils permettant la confection d\u2019\u00e9l\u00e9ments constructifs.<\/p>\n

    \u2013 Un s\u00e9minaire de restitution \u00e0 Dakar, regroupant une majorit\u00e9 des parties prenantes au d\u00e9veloppement de ces mat\u00e9riaux au S\u00e9n\u00e9gal, qui s\u2019est tenu \u00e0 Dakar les 17 et 18 F\u00e9vrier 2015 en pr\u00e9sence de plus de 80 participants .<\/p>\n

    \u2013 Un atelier avec des acteurs \u00e9conomiques, techniques, scientifiques et de la soci\u00e9t\u00e9 civile pour r\u00e9aliser un premier transfert de technologie et v\u00e9rifier la faisabilit\u00e9 des mat\u00e9riaux que nous avons d\u00e9velopp\u00e9s \u00e0 Grenoble.<\/p>\n

    At a later stage, once we are satisfied that they meet local demand and various technical, social and cultural requirements, the materials will undergo physical characterization, including thermal, mechanical and acoustic characterization, as well as fire resistance testing.<\/p>\n

    A training course for professionals will soon be held in Diamniadio. The eco-pavilion demonstrator for Terre-Typha products is also being designed as part of the research program. Construction is due to start at the end of 2015.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

    \n
    \n
    \n
    \n
    \n

    Results<\/strong><\/h2>\n

    To date, different types of materials have been developed for different construction systems.<\/p>\n

    For partitions and wall lining, blocks, Terre-Typha panels and Typha-only panels are currently being developed. During the feedback seminar, it was also suggested that the question of alternative blocks to cement blocks (especially for new buildings) for non-load-bearing walls should be explored in greater depth.<\/p>\n

    For floors, Terre-Typha or Typha-only hourdis and lining solutions such as Terre-Typha blocks and panels are also being considered.<\/p>\n

    For roofs, this would involve Typha-only panels inspired by traditional Typha mats (and techniques used in Romania) or Terre-Typha panels. Several variations are then possible: either a treatment on the underside (such as panels under corrugated sheeting; hourdis under a flat roof), or a treatment directly on the roof (tiles and\/or Typha panels alone; or Typha thatch).<\/p>\n

    The gain in grey energy (the amount of energy required to extract, produce, process, transport, install, use, maintain and recycle the material) should be considerable for substitute materials (blocks, panels or hoardings), as raw earth requires little energy to produce the materials and so does the processing of Typha.<\/p>\n

    Particular attention will be paid to aesthetics, with different types of finish being proposed: other local resources may also be used. The question of insulation and acoustic performance is still under study. Earth has the advantage of providing thermal inertia and regulating humidity, and Typha leaves have good insulating properties, as well as hygrothermal regulation. With such properties, the results in terms of improving thermal comfort, and in particular limiting the use of air conditioners, are bound to be highly satisfactory, compared with the current situation where too many buildings and materials used are not very energy-efficient.<\/p>\n<\/div>\n

    \n

    Partners<\/h2>\n

    To achieve this, CRAterre is working in close collaboration with the am\u00e0co project led by Les Grands Ateliers and the Labex AE&CC of the Ecole Nationale Sup\u00e9rieure d'Architecture de Grenoble, as well as with those responsible for the project in Senegal (Unit\u00e9 de gestion PNEEB\/TYPHA, Minist\u00e8re de l'Environnement et du D\u00e9veloppement Durable, Direction des Etablissements Class\u00e9s, UNDP and GEF), and plans to involve representatives of the construction sector in order to best meet the needs, wishes and capacities for valorizing the results.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

    Objectifs CRAterre est charg\u00e9 de mettre au point des mat\u00e9riaux […]<\/p>\n","protected":false},"author":2,"featured_media":5919,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"portfolio_category":[28],"portfolio_skills":[],"portfolio_tags":[30,31],"class_list":["post-3157","avada_portfolio","type-avada_portfolio","status-publish","format-standard","has-post-thumbnail","hentry","portfolio_category-projets","portfolio_tags-habitat","portfolio_tags-matiere-materiaux"],"yoast_head":"\nTypha - CRAterre<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/craterre.org\/en\/case\/typha\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Typha - CRAterre\" \/>\n<meta property=\"og:description\" content=\"Objectifs CRAterre est charg\u00e9 de mettre au point des mat\u00e9riaux […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/craterre.org\/en\/case\/typha\/\" \/>\n<meta property=\"og:site_name\" content=\"CRAterre\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/centrecraterre\" \/>\n<meta property=\"og:image\" content=\"https:\/\/craterre.org\/wp-content\/uploads\/2024\/01\/mapmonde2.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"612\" \/>\n\t<meta property=\"og:image:height\" content=\"304\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"10 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/craterre.org\\\/case\\\/typha\\\/\",\"url\":\"https:\\\/\\\/craterre.org\\\/case\\\/typha\\\/\",\"name\":\"Typha - CRAterre\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/craterre.org\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/craterre.org\\\/case\\\/typha\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/craterre.org\\\/case\\\/typha\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/craterre.org\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/IMH_1767-scaled.jpg\",\"datePublished\":\"2025-05-26T14:53:14+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/craterre.org\\\/case\\\/typha\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/craterre.org\\\/case\\\/typha\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/craterre.org\\\/case\\\/typha\\\/#primaryimage\",\"url\":\"https:\\\/\\\/craterre.org\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/IMH_1767-scaled.jpg\",\"contentUrl\":\"https:\\\/\\\/craterre.org\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/IMH_1767-scaled.jpg\",\"width\":2560,\"height\":1920},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/craterre.org\\\/case\\\/typha\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Portfolio\",\"item\":\"https:\\\/\\\/craterre.org\\\/case\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Typha\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/craterre.org\\\/#website\",\"url\":\"https:\\\/\\\/craterre.org\\\/\",\"name\":\"CRAterre\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/craterre.org\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/craterre.org\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/craterre.org\\\/#organization\",\"name\":\"CRAterre\",\"url\":\"https:\\\/\\\/craterre.org\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/craterre.org\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/craterre.org\\\/wp-content\\\/uploads\\\/2024\\\/04\\\/CRAterre-logo-indiv.png\",\"contentUrl\":\"https:\\\/\\\/craterre.org\\\/wp-content\\\/uploads\\\/2024\\\/04\\\/CRAterre-logo-indiv.png\",\"width\":1618,\"height\":661,\"caption\":\"CRAterre\"},\"image\":{\"@id\":\"https:\\\/\\\/craterre.org\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/centrecraterre\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Typha - CRAterre","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/craterre.org\/en\/case\/typha\/","og_locale":"en_US","og_type":"article","og_title":"Typha - CRAterre","og_description":"Objectifs CRAterre est charg\u00e9 de mettre au point des mat\u00e9riaux […]","og_url":"https:\/\/craterre.org\/en\/case\/typha\/","og_site_name":"CRAterre","article_publisher":"https:\/\/www.facebook.com\/centrecraterre","og_image":[{"width":612,"height":304,"url":"https:\/\/craterre.org\/wp-content\/uploads\/2024\/01\/mapmonde2.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"10 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/craterre.org\/case\/typha\/","url":"https:\/\/craterre.org\/case\/typha\/","name":"Typha - CRAterre","isPartOf":{"@id":"https:\/\/craterre.org\/#website"},"primaryImageOfPage":{"@id":"https:\/\/craterre.org\/case\/typha\/#primaryimage"},"image":{"@id":"https:\/\/craterre.org\/case\/typha\/#primaryimage"},"thumbnailUrl":"https:\/\/craterre.org\/wp-content\/uploads\/2025\/05\/IMH_1767-scaled.jpg","datePublished":"2025-05-26T14:53:14+00:00","breadcrumb":{"@id":"https:\/\/craterre.org\/case\/typha\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/craterre.org\/case\/typha\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/craterre.org\/case\/typha\/#primaryimage","url":"https:\/\/craterre.org\/wp-content\/uploads\/2025\/05\/IMH_1767-scaled.jpg","contentUrl":"https:\/\/craterre.org\/wp-content\/uploads\/2025\/05\/IMH_1767-scaled.jpg","width":2560,"height":1920},{"@type":"BreadcrumbList","@id":"https:\/\/craterre.org\/case\/typha\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Portfolio","item":"https:\/\/craterre.org\/case\/"},{"@type":"ListItem","position":2,"name":"Typha"}]},{"@type":"WebSite","@id":"https:\/\/craterre.org\/#website","url":"https:\/\/craterre.org\/","name":"\u200eCRAterre","description":"","publisher":{"@id":"https:\/\/craterre.org\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/craterre.org\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/craterre.org\/#organization","name":"\u200eCRAterre","url":"https:\/\/craterre.org\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/craterre.org\/#\/schema\/logo\/image\/","url":"https:\/\/craterre.org\/wp-content\/uploads\/2024\/04\/CRAterre-logo-indiv.png","contentUrl":"https:\/\/craterre.org\/wp-content\/uploads\/2024\/04\/CRAterre-logo-indiv.png","width":1618,"height":661,"caption":"CRAterre"},"image":{"@id":"https:\/\/craterre.org\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/centrecraterre"]}]}},"_links":{"self":[{"href":"https:\/\/craterre.org\/en\/wp-json\/wp\/v2\/avada_portfolio\/3157","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/craterre.org\/en\/wp-json\/wp\/v2\/avada_portfolio"}],"about":[{"href":"https:\/\/craterre.org\/en\/wp-json\/wp\/v2\/types\/avada_portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/craterre.org\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/craterre.org\/en\/wp-json\/wp\/v2\/comments?post=3157"}],"version-history":[{"count":3,"href":"https:\/\/craterre.org\/en\/wp-json\/wp\/v2\/avada_portfolio\/3157\/revisions"}],"predecessor-version":[{"id":5358,"href":"https:\/\/craterre.org\/en\/wp-json\/wp\/v2\/avada_portfolio\/3157\/revisions\/5358"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/craterre.org\/en\/wp-json\/wp\/v2\/media\/5919"}],"wp:attachment":[{"href":"https:\/\/craterre.org\/en\/wp-json\/wp\/v2\/media?parent=3157"}],"wp:term":[{"taxonomy":"portfolio_category","embeddable":true,"href":"https:\/\/craterre.org\/en\/wp-json\/wp\/v2\/portfolio_category?post=3157"},{"taxonomy":"portfolio_skills","embeddable":true,"href":"https:\/\/craterre.org\/en\/wp-json\/wp\/v2\/portfolio_skills?post=3157"},{"taxonomy":"portfolio_tags","embeddable":true,"href":"https:\/\/craterre.org\/en\/wp-json\/wp\/v2\/portfolio_tags?post=3157"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}