{"id":18,"date":"2023-12-12T23:49:00","date_gmt":"2023-12-12T16:49:00","guid":{"rendered":"http:\/\/envafs.dungnq.local\/2005\/06\/29\/variation-characteristics-and-propagation-ability-of-casuarina-equisetifolia-by-cutting\/"},"modified":"2024-02-09T21:58:09","modified_gmt":"2024-02-09T14:58:09","slug":"variation-characteristics-and-propagation-ability-of-casuarina-equisetifolia-by-cutting","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/2023\/12\/variation-characteristics-and-propagation-ability-of-casuarina-equisetifolia-by-cutting\/","title":{"rendered":"Project \u201cTechnology completion for the manufacture of bamboo scrimber as construction and interior materials\u201d."},"content":{"rendered":"

GENERAL INFORMATION:<\/strong><\/p>\n

Under research program: <\/strong>(of) Ministry of Agriculture and Rural Development<\/p>\n

Funding institution: <\/strong>Ministry of Agriculture & Rural Development<\/p>\n

Research lead organization: <\/strong>Vietnamese Academy of Forest Sciences<\/p>\n

Research implementation unit: <\/strong>Research Institute of Forest Industry<\/p>\n

Project leader<\/strong>: PhD. Nguyen Thi Phuong<\/p>\n

Project duration<\/strong>: 2021-2023<\/p>\n

\"\"<\/p>\n

RESEARCH OBJECTIVES AND CONTENT:<\/strong><\/p>\n

Objectives:<\/strong><\/p>\n

– Technology completion for the manufacture of bamboo scrimber as construction and interior materials at an industrial scale.<\/p>\n

– Establishment of a bamboo scrimber production model with a capacity of 1500 m3<\/sup>\/year at BWG Joint Stock Company in Mai Chau, Hoa Binh.<\/p>\n

– Application of the completed technology to manufacture 100m3<\/sup> bamboo scrimber.<\/p>\n

– Technology transfer for mass production.<\/p>\n

Contents:<\/strong><\/p>\n

Content 1: <\/u>Technology completion for making bamboo strips.<\/p>\n

– Technology completion for making raw bamboo strips<\/p>\n

– Technology completion for preservation of bamboo strips<\/p>\n

– Technology completion of hydrothermal treatment and drying of bamboo strips.<\/p>\n

– Technology completion of glue impregnation and drying of impregnated.<\/p>\n

Content 2:<\/u> Technology completion for the production of bamboo scrimber as construction and interior materials.<\/p>\n

– Technology completion for cold pressing of bamboo scrimber<\/p>\n

– Technology completion of the heating process for resin curing of bamboo scrimber after cold pressing<\/p>\n

Content 3:<\/u> Establishment of a bamboo scrimber production model with a capacity of 1500 m3<\/sup>\/year<\/p>\n

– Calculation and selection of machines in line with the scale of the model<\/p>\n

– Design of the model layout<\/p>\n

– Selection of additional machines for the model<\/p>\n

– Environmental assessment of the model<\/p>\n

– Trial production for machines\u2019 calibration<\/p>\n

Content 4:<\/u> Trial production of bamboo scrimber. Designing and building a model of a stilt house and producing a set of a table and chairs by using bamboo scrimber as materials.<\/p>\n

– Designing and building a model of a stilt house of 70 m2 <\/sup><\/p>\n

– Designing and producing a set of a table and chairs<\/p>\n

Content 5: <\/u>\u00a0Training<\/p>\n

– Training for 3 technicians<\/p>\n

– Training for 50 workers<\/p>\n

SUMMARY OF RESEARCH RESULTS<\/strong><\/p>\n

    \n
  1. \n
      \n
    1. Adoption of the technological for production of bamboo scrimber has been completed as follows:<\/li>\n<\/ol>\n

      – The pressing and rolling speed for making bamboo strips was 15 m\/min and the optimal wall thickness of bamboo logs for making strips was 8-9 mm.<\/p>\n

      – Wood preservatives LN5 and XM5 at a concentration of 5% are very effective for bamboo strip preservation and protection against mould and colour stain.<\/p>\n

      – Bamboo strips were treated at 140o<\/sup>C and for 5h for use as scrimber and 3h for use as construction and interior materials.<\/p>\n

      – The treated bamboo strips were dried at 80o<\/sup>C and for 48h to achieve a moisture content of 8% – 10%.<\/p>\n

      – The bamboo strips were immersed in PF glue mixed with water at ratio of 1: 1,5 for immersion of 10 mins.<\/p>\n

      – Glue Impregnated bamboo strips were dried at 70o<\/sup>C for 6 h to achieve moisture content of 13% -15%.<\/p>\n

      – The pressure applied to make bamboo scrimber for construction was 70 MPa and for interior material 60 MPa.<\/p>\n\n\n\n\n
      <\/td>\n<\/tr>\n
      <\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      – The temperature and duration for heat curing the resin curing for bamboo scrimber after cold pressing for both construction and interior materials is shown in the diagram below<\/p>\n

      2. One bamboo scrimber production model factory with a capacity of 1500 m3<\/sup>\/year has been established and 100.5 m3<\/sup> bamboo scrimber have been produced. A stilt house of 70 m2 <\/sup>has been designed and built. A set of table and chairs has also been designed and produced.- The costs and capabilities of machines for the bamboo scrimber production model with capacity of 1500 m3 <\/sup>have been evaluated and the best machines selected.<\/p>\n

      – 75 m3<\/sup> bamboo scrimber as construction materials and 30.5 m3 <\/sup>bamboo scrimber as interior materials have been manufactured.<\/p>\n

      – A stilt house of 70 m2 <\/sup>has been designed and built at BWG Joint Stock Company in Mai Chau, Hoa Binh.<\/p>\n

      – A set of table and chairs has been produced<\/p>\n

      – The value of advanced bamboo scrimeber products for construction and interior materials has been recognized.<\/p>\n

        \n
      1. 03 technicians and 50 workers have been trained on the procedure for manufacture of bamboo scrimber as construction and interior materials.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n
        \"\"<\/figure>\n

        <\/p>\n","protected":false},"excerpt":{"rendered":"

        INTRODUCTION<\/p>\n

        Casuarina equisetifolia was introduced into Vietnam first in 1896 and in 1915, it was first planted in the coastal area of Nghe An ( Lam Cong Dinh, 1977). In 1929, Casuarina was first planted in the North of Vietnam to use as poles in the mine industry ( Lataste, 1940) and it is now one of the main planting tree species in coastal sand areas of provinces in Central Vietnam and in the northern plain region.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[14,24],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/18"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/comments?post=18"}],"version-history":[{"count":0,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/18\/revisions"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=18"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=18"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=18"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}