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21 records – page 1 of 3.

An evaluation of lumber spray boxes at a coastal British Columbia sawmill

https://library.fpinnovations.ca/en/permalink/fpipub41115
Author
Groves, C. Kevin
Johnson, E.L.
Date
June 1993
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Groves, C. Kevin
Johnson, E.L.
Date
June 1993
Material Type
Research report
Physical Description
5 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Spraying
Preservatives tests
Preservatives
Series Number
1743K202
W-1177
Location
Vancouver, British Columbia
Language
English
Abstract
Mould and stain became troublesome problems on lumber manufactured at a coastal British Columbia sawmill, and the difficulties were suspected to be a fault of the mill's antisapstain treatment. Forintek technical staff visited the sawmill and planer mill and used two procedures to gather assessment. Firstly, boards were pulled from spray box chains after spray treatment and one-inch square samples were punched from four faces of these boards for chemical analysis of DDAC, one of the active ingredients in the formulation being used. With a large number of samples, this procedure quantitatively assessed DDAC retention levels at points along boards. Secondly, fluorescent dye was added to the spray solutions and special paper strips were stapled along the length of boards prior to treatment in the spray box. The paper strips were then retrieved for examination under ultraviolet light. This procedure is largely a qualitative one, showing the pattern of spray coverage over the whole board. Liquid samples of the treatment solutions were taken from both the sawmill and planer cross chain day tanks to determine their DDAC concentrations.
Spraying
Preservatives - Tests
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Chemical analysis development - first of two reports. Analysis for boron in treated wood.

https://library.fpinnovations.ca/en/permalink/fpipub4306
Author
Johnson, E.L.
Ingram, Janet K.
Date
March 1992
Edition
41071
Material Type
Research report
Field
Sustainable Construction
Author
Johnson, E.L.
Ingram, Janet K.
Date
March 1992
Edition
41071
Material Type
Research report
Physical Description
12 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Preservatives boron
Preservatives
Analysis
Series Number
Forestry Canada No. 37
Contract no. 1712L022
W-941
Location
Vancouver, British Columbia
Language
English
Abstract
Methods for the analysis of boron in wood were reviewed and one, a method in which base titration of a mannitol/boron complex is done, was chosen for possible routine use. Method parameters were tested and the stages were modified to arrive at a routine which can determine boron content in wood within 5% accuracy. Hot water leaching of chip samples, 2.54 x 2.54 cm x 2 to 3 mm thick, of wood which has been given borate/antisapstain treatment is better than 95% efficient within four hours; this is as efficient as a ten-cycle extraction on a soxhlet apparatus. Using an automatic titrator, analysis for boron is done by titrating a mannitol complex of the boron in the extract. The simplicity, low expense, speed, and accuracy of this routine give it the advantage over several other methods. The aqueous extracts of wood, the mannitol reagent, and secondary components of boron treating formulations can all add to the apparent boron content of the wood sample; these factors are variable but generally total about 8 *g boric acid equivalent per cm2 of wood surface. The method is also suitable for the analysis of boron in heavily (preservative) treated wood.
Preservatives - Boron
Preservatives - Chemical analysis
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Comparative evaluation of five sapstain, mould and decay preventives with sodium tetrachlorophenate by a field trial : final report

https://library.fpinnovations.ca/en/permalink/fpipub40992
Author
Cserjesi, Antal Ja'nos
Johnson, E.L.
Byrne, Anthony (Tony)
Date
January 1983
Material Type
Research report
Field
Sustainable Construction
Author
Cserjesi, Antal Ja'nos
Johnson, E.L.
Byrne, Anthony (Tony)
Contributor
Canada. Department of Agriculture.
Date
January 1983
Material Type
Research report
Physical Description
26 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Preservatives
Preservation
Pentachlorophenol
Series Number
02-65-68-564
W-298
Location
Vancouver, British Columbia
Language
English
Abstract
Preservatives - Pentachlorophenates
Lumber - Preservation
Documents
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Comparison of natural and artificial weathering of treated and untreated western red cedar shakes

https://library.fpinnovations.ca/en/permalink/fpipub41004
Author
Cserjesi, Antal Ja'nos
Johnson, E.L.
Byrne, Anthony (Tony)
Date
January 1984
Material Type
Research report
Field
Sustainable Construction
Author
Cserjesi, Antal Ja'nos
Johnson, E.L.
Byrne, Anthony (Tony)
Date
January 1984
Material Type
Research report
Physical Description
12 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Thuja plicata
Shingles durability
Shingles
Series Number
02-65-43-013
W-352
Location
Vancouver, British Columbia
Language
English
Abstract
Thuja plicata - Shingles
Shingles - Durability
Documents
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Corrosion of iron by some antisapstain formulations

https://library.fpinnovations.ca/en/permalink/fpipub41042
Author
Smith, R.S.
Johnson, E.L.
Date
August 1987
Material Type
Research report
Field
Sustainable Construction
Author
Smith, R.S.
Johnson, E.L.
Date
August 1987
Material Type
Research report
Physical Description
17 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Preservatives
Series Number
02-17-43-K-105
W-502
Location
Vancouver, British Columbia
Language
English
Abstract
Preservatives - Corrosiveness
Documents
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Electrodyn spray application technology for lumber

https://library.fpinnovations.ca/en/permalink/fpipub41066
Author
Johnson, E.L.
Clark, Jean E.
Smith, R.S.
Date
March 1990
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Johnson, E.L.
Clark, Jean E.
Smith, R.S.
Contributor
BC Science Council
Date
March 1990
Material Type
Research report
Physical Description
32 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Spraying
Pressure
Preservatives tests
Preservatives
Preservation
Series Number
1771K402
W-925
Location
Vancouver, British Columbia
Language
English
Abstract
Research to commercialize ultra-low-volume charged-drop spray application technology for the fungicidal protection of unseasoned lumber during transit and storage is described. Tests were made to establish the feasiblity of using the Electrodyn spray in a commercial setting and a field test investigated the efficacy of treatments and chemicals applied.
Preservatives - Tests
Spraying
Preservation - Non pressure processes - Brushing and spraying
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Evaluation of the Q.U.V. accelerated weathering tester for simulated weathering of western red cedar roofing products

https://library.fpinnovations.ca/en/permalink/fpipub40989
Author
Cserjesi, Antal Ja'nos
Johnson, E.L.
Byrne, Anthony (Tony)
Date
July 1984
Material Type
Research report
Field
Sustainable Construction
Author
Cserjesi, Antal Ja'nos
Johnson, E.L.
Byrne, Anthony (Tony)
Date
July 1984
Material Type
Research report
Physical Description
13 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Weathering
Thuja plicata
Shingles durability
Shingles
Preservatives tests
Preservatives
Series Number
02-65-43-015
W-261
Location
Vancouver, British Columbia
Language
English
Abstract
Weathering, Accelerated
Preservatives - Tests, Accelerated
Thuja plicata - Shingles
Shingles - Durability
Documents
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Field test of antisapstain formulations for Canadian lumber

https://library.fpinnovations.ca/en/permalink/fpipub41021
Author
Byrne, Anthony (Tony)
Johnson, E.L.
Smith, R.S.
Date
October 1986
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Byrne, Anthony (Tony)
Johnson, E.L.
Smith, R.S.
Date
October 1986
Material Type
Research report
Physical Description
1 v.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Wood
Stain fungal
Stain
Canada
Preservatives
Series Number
02-17-43-006
W-424
Location
Vancouver, British Columbia
Language
English
Abstract
Stains - Fungal
Fungi - Wood staining
Preservatives - Fungicides
Documents
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A field test of PP 523 (hexaconazole) using the electrodyn to treat hem-fir lumber

https://library.fpinnovations.ca/en/permalink/fpipub40941
Author
Clark, Jean E.
Johnson, E.L.
Date
April 1989
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Clark, Jean E.
Johnson, E.L.
Date
April 1989
Material Type
Research report
Physical Description
11 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Preservatives
Preservation
Series Number
1743K104
W-682
Location
Vancouver, British Columbia
Language
English
Abstract
Summary included
Preservatives - Experimental
Hem-fir - Preservation
Documents
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Field trial of a new fungicidal formulation of sodium tribromophenate

https://library.fpinnovations.ca/en/permalink/fpipub40988
Author
Cserjesi, Antal Ja'nos
Johnson, E.L.
Byrne, Anthony (Tony)
Date
June 1984
Material Type
Research report
Field
Sustainable Construction
Author
Cserjesi, Antal Ja'nos
Johnson, E.L.
Byrne, Anthony (Tony)
Date
June 1984
Material Type
Research report
Physical Description
6 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Wood
Preservatives
Series Number
02-65-43-160
W-260
Location
Vancouver, British Columbia
Language
English
Abstract
Preservatives - Experimental
Preservatives - Fungicides
Moulds - Control
Fungi - Wood staining - Control
Documents
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21 records – page 1 of 3.