A Checklist on Water Damage

In order to address water damage of asphalt pavement, reduce the occurrence of water-related potholes, deformation, and other diseases, and improve the performance and service life of the pavement, a nano-TiO2 superhydrophobic coating (PSC) on asphalt pavement was prepared from waterborne polyurethane and nano-TiO2 modified by stearic acid. FT-IR measured stearic acid successfully modified low surface energy substance on the surface of nano-TiO2. The SEM image shows that the PSC has a rough surface structure. The contact angle and rolling angle of the PSC in the contact angle test are 153.5° and 4.7°, respectively. PSC has a super-hydrophobic ability, which can improve the water stability of the asphalt mixture. Although the texture depth and pendulum value have been reduced by 2.5% and 4.4%, respectively, they all comply with the standard requirements. After the abrasion resistance test, the PSC coating still has a certain hydrophobic ability. These results surface PSC coating can effectively reduce water damage on asphalt pavement, and has considerable application value.

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Directional Drainage Grouting Technology of Coal Mine Water Damage Treatment

Procedia Engineering ◽

10.1016/j.proeng.2011.11.2167 ◽

2011 ◽

Vol 26 ◽

pp. 264-270 ◽

Cited By ~ 5

Author(s):

Qiucheng Zhang ◽

Jinhai Li ◽

Bingshen Liu ◽

Xiaoguo Chen

Keyword(s):

Coal Mine ◽

Mine Water ◽

Coal Mine Water ◽

Water Damage

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VI. Flood and Water-Damage

Library & Archival Security ◽

10.1300/j114v05n02_07 ◽

1983 ◽

Vol 5 (2-3) ◽

pp. 49-58

Author(s):

Haworth Continuing Features Submission

Keyword(s):

Water Damage

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Research of Water Damage Resistance Performance of CAM in Low Temperature Condition

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.723.157 ◽

2013 ◽

Vol 723 ◽

pp. 157-162

Author(s):

Jian Li ◽

Qu Chao ◽

He Ping

Keyword(s):

Low Temperature ◽

Atmospheric Pressure ◽

Asphalt Pavement ◽

Natural World ◽

Chloride Salt ◽

The Road ◽

Normal Atmospheric Pressure ◽

Water Damage ◽

Resistance Performance ◽

Complex Polymer

Under normal atmospheric pressure conditions, volume suddenly increases about 11% when the water freezes and decreased when the ice melts. The pressure can reach up to 2500 times of atmospheric pressure in the closed space when the water freezing. This is a very important characteristic of the natural world and the industrial. In low temperature condition, the snow on the pavement is easy to melt and freeze, and it will affect the road safety, increase the cracking of the road and accelerate asphalt pavement water damage. Bitumen is a mixture consisting of some extremely complex polymer hydrocarbons and hydrocarbon derivatives of non-metallic (oxygen, sulfur, nitrogen). Deicing salt is used to prevent freezing in that area, chloride salt is its main ingredient. When the water melting point reduced, it is not easy to icing but to penetrate the asphalt pavement. If the temperature is continued to reduce, salt solution will still freezing. At last, the pavement will form water damage in repeated freeze-thaw cycles conditions.

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Generation and Characterization of Indoor Fungal Aerosols for Inhalation Studies

Applied and Environmental Microbiology ◽

10.1128/aem.04063-15 ◽

2016 ◽

Vol 82 (8) ◽

pp. 2479-2493 ◽

Cited By ~ 18

Author(s):

Anne Mette Madsen ◽

Søren T. Larsen ◽

Ismo K. Koponen ◽

Kirsten I. Kling ◽

Afnan Barooni ◽

...

Keyword(s):

Species Composition ◽

Indoor Environment ◽

Building Materials ◽

Inhalation Exposure ◽

Single Species ◽

Fungal Species ◽

Exposure Level ◽

Exposure System ◽

Content Type ◽

Water Damage

ABSTRACTIn the indoor environment, people are exposed to several fungal species. Evident dampness is associated with increased respiratory symptoms. To examine the immune responses associated with fungal exposure, mice are often exposed to a single species grown on an agar medium. The aim of this study was to develop an inhalation exposure system to be able to examine responses in mice exposed to mixed fungal species aerosolized from fungus-infested building materials. Indoor airborne fungi were sampled and cultivated on gypsum boards. Aerosols were characterized and compared with aerosols in homes. Aerosols containing 107CFU of fungi/m3air were generated repeatedly from fungus-infested gypsum boards in a mouse exposure chamber. Aerosols containedAspergillus nidulans,Aspergillus niger,Aspergillus ustus,Aspergillus versicolor,Chaetomium globosum,Cladosporiumherbarum,Penicillium brevicompactum,Penicillium camemberti,Penicillium chrysogenum,Penicillium commune,Penicillium glabrum,Penicillium olsonii,Penicillium rugulosum,Stachybotrys chartarum, andWallemia sebi. They were all among the most abundant airborne species identified in 28 homes. Nine species from gypsum boards and 11 species in the homes are associated with water damage. Most fungi were present as single spores, but chains and clusters of different species and fragments were also present. The variation in exposure level during the 60 min of aerosol generation was similar to the variation measured in homes. Through aerosolization of fungi from the indoor environment, cultured on gypsum boards, it was possible to generate realistic aerosols in terms of species composition, concentration, and particle sizes. The inhalation-exposure system can be used to study responses to indoor fungi associated with water damage and the importance of fungal species composition.

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Urban Sewage and Green Meadows: Berlin's Expansion to the South 1870–1920

Central European History ◽

10.1017/s0008938914001253 ◽

2014 ◽

Vol 47 (2) ◽

pp. 275-306 ◽

Cited By ~ 2

Author(s):

Marion W. Gray

Keyword(s):

The South ◽

Governing Council ◽

Southern Boundary ◽

Urban Sewage ◽

Property Owners ◽

Water Damage

On May 23, 1908, Frau Treppens, the proprietress of a Gasthaus near the agricultural estate Klein Ziethen contacted the governing council of Steglitz regarding an urgent concern about water damage. Steglitz was five kilometers south of Berlin's southern boundary; Klein Ziethen was twelve kilometers southeast of Steglitz. Writing on the advice of attorney Georg Hillman, Frau Treppens urgently inquired what the council was going to do about the water on her property, which had already caused “enormous damage.” Like many other property owners near Klein Ziethen, she had been battling water in her basement; for some this had been going on for two years. Frau Treppens inquired what steps Steglitz was taking against Rixdorf, another rapidly growing suburb, located on Berlin's southeast perimeter sixteen kilometers from Klein Ziethen. Why was Frau Treppens turning to the officials of Steglitz, and why did she and her attorney assume that Steglitz and Rixdorf bore responsibility for her water-soaked cellar?

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