Your search resulted in 776 documents. Displaying 25 entries per page.
Wood preservation in Southern Africa
1984 - IRG/WP 3320
This report deals with the status of wood preservation in the countries of Southern Africa, namely Botswana, Lesotho, Mozambique, Namibia, South Africa, Swaziland and Zimbabwe. It includes some data on the timber production from the forests of these countries, as well as detailing the state of the timber products industries in South Africa which is the dominant country in the field in the sub-cont...
A Pizzi, W E Conradie, R Cockcroft
Pollution in wood preservation - Aspects and problems
1973 - IRG/WP 55
In the field of wood preservation too, pollution problems have to be considered. They originate with the wood preservatives used. The extent of pollution differs widely with the type of preservative and the treatment process used. Per unit of impregnated timber, pollution will be lower if treatment is performed in treating plants than in distributed places. It will be highest for the old type Bouc...
H Willeitner
Administration of wood preservative usage in New Zealand
1977 - IRG/WP 395
Principal administration of the preservative treatment of timber in New Zealand is by the Timber Preservation Authority (TPA). The TPA was established in 1955 by Act of Parliament and is under the jurisdiction of the Minister of Forests who appoints its members. Its field staff are Forest Service employees. The Authority comprises twelve members and includes representatives of timber trade associa...
M E Hedley
Long-term preservation technology for a large-scale timber structure building in Japan
2001 - IRG/WP 01-40203
Several 1.000-year-old Buddhist temples and shrines built of wood are surviving in Nara, some areas of which are inscribed on the World Heritage List. These old buildings are indicative of excellent timber construction technology having existed in ancient Japan, though it is thought that such technology has not been handed down. This paper introduces one of large-scale wood buildings built in rece...
Y Iimura
Conservation of Nypa fruticans and Indigenous Timber Species of Sundarban Mangrove Forest of Bangladesh by Using Preservative Treatment.
2005 - IRG/WP 05-40297
This report describes the possibilities and benefits of preservative treatment of some Bangladeshi wood species. It is concluded that:
Heartwood of Sundri is not easily treatable. The treating schedule of 14.1 kg/cm² pressure and eight hours treatment period may be used for treating sundry logs. During the treatment of Sundri wood must not mix with other species. Other timber species such as Gew...
G N M Ilias
A study on insect pests and preservation of fire-damaged timbers in Da Xing An Ling forest region
1991 - IRG/WP 1499
Investigated insect pest of timbers of Da Xing An Ling forest region by means of sampling inspection. Meanwhile we had researched insects pest situation, regularity occurred and biological nature for fire damaged timbers attacked in the log yard. The results showed that the mainly insect species are small black-marmorated longicorn (Monochamus sutor L). We had eagaged in various small tests of tim...
Lu Wenda, Li Jian, Shao Jing Wen, Liu Yixing, Cui Yongzhi
Wood preservation in Italy
1985 - IRG/WP 3354
The report summarizes the history of wood preservation in Italy up to the present time. Information on the Italian climate and the main hazards to timber are dealt with and the amounts of timber grown and imported and exported tabulated. The main commodities treated are poles and sleepers. The amounts of preservative used have been estimated and details listed of the 10 pressure plants in the coun...
A Gambetta, E Orlandi, R Cockcroft
Wood preservation in Nigeria - Its increasing relevance, observed constraints and potential as a forest conservation option
1992 - IRG/WP 92-3732
The paper discusses the demand and supply of wood and wood products in Nigeria and points out that in view of the large population (88 million) and search for wood for housing and furniture, the demand exceeds supply. There is great shortage of industrial and domestic woods resulting in underutilization of installed machineries in forest industries and low profit margin. Under this prevailing cond...
M A Odeyinde, S C Ifebueme
Re-sealing cut ends of envelope-treated softwood framing timber to protect against damage by the Australian subterranean termite Coptotermes acinaciformis: A revisitation
2006 - IRG/WP 06-20335
The claim that Australian Coptotermes acinaciformis (Froggatt) do not appear to initiate damage on timber from the end grain, thereby negating the need for treating exposed cut ends of softwood framing material (35 ? 90 mm) which has a repellent Tanalith? T envelope, was further investigated. Specimens of commercial Pinus radiata D.Don framing timber (untreated) and Pinus elliottii Englem. (untrea...
B C Peters, M Lenz, J W Creffield
Non-pressure preservation technique of five less durable timber species – Kadam (Anthocephalus cadamba), Shimul (Bombax ceiba), Pithalu (Trewia nudiflora), Am (Mangifera indica) and Boroi (Ziziphus jujube) of Bangladesh
2006 - IRG/WP 06-40322
Wood is a versatile renewable resource, which has been extensively used as a reliable construction material as well in furniture ever since the beginning of civilization.
The Major disadvantage of wood is its susceptibility to biodeterioration by fungi, insects and bacteria. In tropical countries like Bangladesh, fungi is the most significant of these biodeterioration agents. Kadam (Anthocephalus...
G N M Ilias, A H Kabir, F Begum, M F Alam
Hydrofluoroalkanes as carrier solvents for timber preservation
2009 - IRG/WP 09-40463
Hydrofluoroalkanes are a specific category of hydrofluorocarbon (HFC) commonly used in refrigeration applications. Some HFCs hold potential for use as carrier fluids for preservatives used to protect timber above ground. They do not share the most significant disadvantages of currently used carriers for these applications. At ‘conventional’ operating pressures, they are capable of rapid, full ...
M J Kennedy, B Walker, C Erskine
New Standards for Approval of Modified Wood within the Nordic Wood Preservation Council (NWPC)
2017 - IRG/WP 17-20624
In the Nordic countries, there is a long tradition for quality labelling of preservative treated wood. Until now the labelling has been restricted to pine and other easy to treat wood species, but with the introduction of a new set of standards it is now possible to obtain the Nordic Wood Preservation Council’s (NWPC) quality labelling also for modified wood.
In this paper, we will introduce th...
N Morsing, E Engelund Thybring, M Klamer
Copolymers of tannin extracts as wood protection agents
2017 - IRG/WP 17-30709
Wouldn´t be a dream to preserve wood with the substances which the nature already synthesizes for protecting itself? The idea we would like to pursue is simple: Increase the concentration of these substances, the tannins, trying to fix them properly in wood. It appears easy but it is not. Sensibility against leaching, fungal decay and weathering were observed. In this paper new flavonoid co-polym...
G Tondi, L Sommerauer, A Oberle, A Petutschnigg, M-F Thevenon
Validating a short-term laboratory method to assess the resistance of timber to biodegradation by marine wood-borers
2021 - IRG/WP 21-10975
Novel approaches to protecting wood in coastal and marine environments are needed as the use of traditional broad-spectrum biocides are now restricted. Wood is widely utilised in marine environments where it can be rapidly degraded by wood-boring organisms, causing billions of dollars of damage per annum. Biocidal compounds such as CCA and creosote have been popular treatments for timber products ...
L S Martin, J R Shipway, G P Malyon, S M Cragg
Preliminary investigation for preservation method of CLT using non-pressure treatment
2021 - IRG/WP 21-40919
Cross-laminated Timber (CLT) is increasingly being used in residential and non-residential construction around the world, and some of these areas are at high risk of biodeterioration. Addition to moisture management of construction, preservative treatment of CLT may be needed to prevent decay and termite attack in the area. Pressure treatment being most reliable, is not feasible due to the large d...
T Miyauchi, Y Ohashi, J Miyazaki, R Takanashi, H Shibui, S Isaji, T Shigeyama, Y Sugai, A Yamamoto, T Hramiishi, T Mori, H Matsunaga
EMC as a quality control parameter for thermally modified wood
2024 - IRG/WP 24-20720
While standards for quality performance of treated wood have been in place for many years, none have been developed for modified wood such as thermally modified wood (TMW). Only in one case has TMW been listed in 2018, by the Nordic Wood Preservation Council (NWPC).
A key component of a quality system is its control parameters, i.e. the metrics that are to be measured and controlled. Existing m...
P Klaas, J T Lauridsen
The IRG..Chanelling information and ideas into the mainstream of wood preservation technology
1985 - IRG/WP 5241
IRG Secretariat
Wood preservation in Poland
2004 - IRG/WP 04-30362
Dynamic growth of market demand for wooden elements and articles, generated in Poland increase of interest in industrial preservation. Today, Poland is a substantial producer and exporter of wood made products. Majority of exported wood - approximately 70% - is scotch pine (Pinus silvestris L.), which, due to its natural durability, requires preservation....
A Kundzewicz
Screening potential preservatives against stain and mould fungi on pine timber in Zimbabwe
1995 - IRG/WP 95-30063
The search for environmentally and toxicologically safer chemicals for use in the timber preservative industry against stain and mould fungi has been intensified during the past few years. Results of field tests with two chemicals previously evaluated in the laboratory are presented. The conventional sodium pentachlorophenate was the more efficacious chemical against stain and mould fungi, providi...
A J Masuka
IRG/COIPM INTERNATIONAL MARINE TEST - to determine the effect of timber substrate on the effectiveness of water-borne salt preservatives in sea-water. Progress Report 2: Report of treatment and installation in Australia
1978 - IRG/WP 440
The purpose of this test and the procedures to be followed have been fully set out in documents distributed by the International Research Group on Wood Preservation and numbered IRG/WP/414 and IRG/WP/420. The prescriptions set out in these two documents have been closely followed....
J Beesley
Manual of a mini treating plant for waterborne preservative treatment of timber and bamboo
1999 - IRG/WP 99-40130
This contributional article includes machinaries and equipments necessary for a small wood treating plant for the pressure treatment of tim bers with waterborne preservatives along with the cost and design. The preservative treatment limitations, treatment schedules and specifications for different products have been described. The cost of a mini treating plant will be 6,00,000 Tk. (13,000 US$), s...
A K Lahiry
The applicability of life cyle analysis and alternative methods in the wood preservation industry
1994 - IRG/WP 94-50023
In the Netherlands, several case studies have been performed using the life cycle analysis method (LCA). This type of research is aimed at an inventory and classification (sometimes including also evaluation) of the environmental impacts of a product, from the raw material to waste stage ("cradle to grave" approach). In a LCA each environmental impact is assessed in terms of, for example, mass of ...
P Esser, J Cramer
Environmental status of wood preservation in the UK
1994 - IRG/WP 94-50018
The environmental status of wood preservatives and treated wood in the UK is summarised. The current legislatory position with respect to approvals, supply, use and waste disposal is considered. The bibliography at the end of this paper contains details of all publications referred to together with other relevant information although this cannot be exhaustive....
M Connell
IRG - wood preservation - annual report 1999; wood preservation in Slovak Republic
2000 - IRG/WP 00-40192
This report gives basic information about wood preservation in Slovak Republic, related to the wood preservation research and education, to the most important wood-destroying organisms, to the wood preserving industry, and also to the problems of standards, market and environment....
L Reinprecht
Field performance of wood preservative systems in secondary timber species
1997 - IRG/WP 97-30152
The objective of this ongoing study is to evaluate the performance of new, potential, and standard wood preservative systems in secondary North American timber species. Eleven preservative systems were evaluated in this study - ACQ Type B, Copper Citrate 2: l, CDDC, chlorothalonil/chlorpyrifos, copper-8-quinolinolate, tebuconazole/chlorpyrifos, RH287, propiconazole/chlorpyrifos, copper naphthenate...
P E Laks, K W Gutting, R C De Groot