Carbonation of concrete in structures which is concrete when covered finishing material is generally compared with something which isn't covered on the surface of the concrete, it's thought that there is suppressive effect. Carbonation of concrete in structures by finishing material, it's important to estimate appropriately about suppressive effect. I also become carbonation about finishing material variously in JASS5, the rate is introduced. But such as there is no value about the finishing material used recently, it's enough but it's in the situation that I don't have that. So by the purpose of doing the evaluation proposition that finishing material is objective, in Building Contractors Society, a workshop, I start and continue the activity. This report describes investigation results of literature about the multi-layer wall coating for glossy textured finish which are over a series of study, the whole outline and one of finishing material.

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In this report, we investigated the literature concerning the carbonation suppressive effect of finishing materials. As a result, the following was confirmed. 1) The carbonation suppressive effect of the thin coating materials for textured finishes tended to be low. 2) In a state without deterioration of the coated finish, the thick coating materials for textured finishes had a high carbonation suppressive effect, because it was neutralization rate around 0.4. 3) Liquid-applied compounds for waterproofing membrane coating had an extremely high carbonation suppressive effect, because it was neutralization rate around 0 when the standard membrane thickness was more than 1mm. 4) Surface penetrant expects a carbonation suppressive effect according to the type of it.

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In order to evaluate the effect of carbonation suppression by means of various finish materials, the authors have been researching as the member of Building Contractors Society - BCS. As the results of examining existing buildings coated with textured finish, it was clarified as follows. 1) With regard to multi-ply textured finish, it had high performance of suppressing concrete carbonation, which showed 5 mm of carbonation depth. 2) With regard to multi-ply textured finish and water-proof type multi-ply textured finish had the higher effect than mortar rendering, as showing less than 0.2 of carbonation rate. 3) The carbonation depth of concrete coated with multi-ply textured finish is supposed to be 10 mm in maximum, when a hundred year is passed.

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To confirm the carbonation suppressive effect of surface preparation materials for finishing and coating materials for textured finishes, the accelerated carbonation test was performed. As a result, the following was confirmed. 1) As for the carbonation suppressive effect of surface preparation materials for finishing, a difference by the factory was confirmed. On the other hand, the difference by the factory was not confirmed to coating materials for textured finishes. 2) Surface preparation materials for finishing "C-2" 3.0mm coating and "CM-2" 3.0mm coating had a carbonation suppressive effect, and surface preparation materials for finishing "E" 0.5mm coating had a high carbonation suppressive effect. 3) Coating materials for textured finishes had an extremely high carbonation suppressive effect.

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Although silicon sealants show excellent waterproof property and excellent weatherability, a staining can be observed around silicon joints. By former papers, following conclusions have been reported. 1) An excellent anti-staining effect of poly-isobutylene sealants (IB-2) has confirmed after three years outdoor exposure. 2) Evaluating method for staining have been established by measuring a contact angle and lightness. In this paper, we repot that IB-2 sealants show an excellent anti-staining effect of refreshed joints which were replaced SR-2 sealant to IB-2 sealant even after weathering for nine years.

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The research on the paint contamination of the non-bleed type modified silicone sealants was done. The research was focused mainly on the correlation between outdoor exposure and quickening method using a heat oven. The result showed the heat quickening method which is used to test polyurethane sealants was also effective to the modified silicone sealants. The heat quickening method could cause migration of plasticizers into the paint. This migration softened the paint surface. Therefore the surface picked up the dirt such as dust or, particles from vehicle emission.

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We executed research for compatibility of the building coating materials and the sealants for construction,in the last couple of outdoor exposure test.These outdoor exposure tests were the collaborative research with Japan Building Coating Materials Association,Japan Sealant Industry Association and Building Research Institute.We started outdoor exposure test again from 2005 October with the recent building coating materials and the sealants for constraction,because 10 years had passed from previous collaborative research.In this study,reports concerning the result ot 1 year later.The surface soil of the building coating materials had an influence on the type of the sealants for construction.Several types which consider soiling prevention (non-bleeding type of polyuretane sealant and the like),it was verified that it is difficult to get dirty.In addition,the soiling prevention effect by the barrier primer was remarkable.And the surface crack of the building coating materials,it had an influence on the type of the building coating materials.

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In part1 and part2 of this report, the research background and outline of pretest for surface treatments before coating onto aluminum alloy and result of experiments for thermoplastic fluoropolymer resin paint are described. In this paper, it is included that result of accelerated deterioration tests and interim report on outdoor exposure test. The surface treatments by chromium(VI) type chemical conversion and anodic oxidation are superior to corrosion prevention for aluminum alloy and adhesion of the hardened coating film onto the aluminum alloy suraface. However, non-chromate type chemical conversion is not good in comparison with the above treatments. As a result of the experiments, substitute of the chromium(VI) type chemical conversion has to be continuously studied and reported.

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In part1,part2 and part3 of this report, experimental results of chemical conversion by non-chromate type for surafce preparation of aluminum alloy has been described. As a result, it is cleared that the non-chromate type chemical conversion has not good capability for the surface treatment. Threfore, chromium(III) type chemical conversion that has not been indicated harmful for human budy has been noticed and started expemental evaluation. In this paper, planning and interium results of the experiment for the chromium(III) type chemical conversion are discribed and the applicability of the pretreatment is anticipated.

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Polyurethane, acrylic silicon, or fluorine resin paints are often used as topcoat paints of steel structures. To reduce the life-cycle cost, fluorine resin systems have become more commonly used recently. "Super-weather resistant inorganic and organic hybrid paint" is what will newly join the weather resistance topcoat paint group. It is a hybrid-type paint with better weather resistance than fluorine resin paints, and has improved flexibility and adhesive property that were disadvantages of inorganic paints. We conducted basic performance tests, accelerated weather resistance tests, and the outdoor exposure test in Miyakojima and report the results in comparison with fluorine resin paints. (100)

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Popular architectural painting system for the steel parts consist of one priming coat and two finishing coats and the total dry film thickness is less than 100μm. It is too hard to block factors (oxygen, water, moisture) which accelate the corrosion with such thin layer, by the improvement of primer blocking quality only. Blocking performance of ordinal water base top coat is not high, and it is easy to occur blisters under wet condition. In this study, we measured water and water vapor permeability of various topcoats, and clarified relationship between the data with blistering and with anti-corrosion property. And we found out the effectiveness of dispersing of hydrophobic group component into emulsion particles to nano-size for enhancing hydrophobic bonding force between emulsion particles.

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The coloring protection paints for acrylic silicon system wood were developed so that the negative environmental impact may decrease, a liquid and the moist repetition character, etc. were measured, and the promotion weather resistance and the atmospheric exposure test were done. As a result, the coloring protection paints for the developed wood obtained the result in which deterioration in the color difference was a little, and water-repellent is high. Therefore, the number of scraps can be decreased by improving the durability of wood by using the coloring protection paints for the developed wood, and it is evaluated that the repainting period can be lengthened, and the repair cost etc. are suppressed, and is used by the wooden temple and shrine construction such as Kiyomizudera temple. In this report, the background of the development, it examines, the evaluation result of the coloring protection paints for this wood, and it furthermore introduces the construction case.

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By the Urban Renaissance Agency, on roof slav, I execute the work with the waterproofing layer and execute the work with an insulation material next and execute the work in concrete ( USD method of construction ,an adiabatic construction method out of roof from 1977)In this paper, about the asphalt waterproofing of the 25 years progress,I analyzed properties of waterproofing matter ,matrix matter, asphalt matter ,and examined the characteristic of the USD method of construction.

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We studied about adhesion durability and wind-resistance performance of the waterproof system of the small power plant with ALC panel roof using vulcanized rubber sheet with adhesive methd. After high-temperature and high-humidity condition aging, we evaluated them by 180 angle peeling test and vertical tensile test. And by using a large wind fan, we realized machanism of scattering waterproof sheets following adhesive conditions or edge details.

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Various barrier penetrants have been used to improve the durability and to prevent the fouling of fair-faced concrete. However, there have been insufficient studies on their durability. This paper describes the results of durability tests (accelerated carbonation, chloride ion penetration, freeze-thaw and accelerated weathering) on the mortars coated with major commercial silane-, acrylic-resin- and silicate-based barrier penetrants used in Japan. The following conclusions were reached. (1) Coating with barrier penetrants can improve the resistance to carbonation and chloride ion penetration of mortar. However, the effects depend on the main ingredient of the barrier penetrants. (2) Coating with barrier penetrants can improve the freeze-thaw durability of mortar. However, the effect of the main ingredient of the barrier penetrants on freeze-thaw durability is unclear. (3) The effect on the water absorption reduction of mortar after accelerated weathering depends greatly on the main ingredient of the barrier penetrants. (4) Coating with barrier penetrants can improve the durability of mortar. However, the effect depends greatly on the main ingredient of the barrier penetrants.

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