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Twelve field projects were studied where fortyour locations were evaluated to assess the cause or causes of asphalt concrete that exhibits ‘tender zone’ characteristics and to investigate the tendency of these mixes to be susceptible to moisture damage. Data was collected during construction and samples were obtained to conduct laboratory tests. Field and laboratory data was used to develop multiple regression equations to predict final in place air voids and moisture susceptibility. The overall conclusion was that compactability appeared to be predicted in a reasonable manner while moisture susceptibility did not. The Methylene Blue test appears promising when used in conjunction with cold feed and/or mix moisture as a means of providing guidance for achieving higher in place density. The tensile strength ratio (TSR) test as performed in this research on laboratory compacted specimens was found to be questionable in terms of its ability to predict field moisture susceptibility.

Chip seals are a commonly used surface treatment used to decrease the deterioration rate of pavement surfaces. Chip seals typically consist of an application of emulsion and cover aggregate. Failure can be driven by improper strength development and inadequate bonding over time. Additionally, chip seal service life varies and long term performance prediction models are not well established. This study has two primary goals. The first goal is to investigate aggregate retention characteristics of chip seal specimens, while investigating material compatibility by means of the Sweep-M test. The second goal is to begin developing a long term performance (LTP) test to represent cores obtained from full-scale chip seal projects. Conditioning and testing protocols for LTP specimens are evaluated for representative chip seal behavior over long periods. Results confirm material interaction and favor the incorporation of sweep testing for optimum performance. Future testing is recommended for in-depth, LTP test protocol evaluation.

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The purpose of this project was to develop an automatic irrigation system for plants. It is beneficial to have plants indoors. In addition to their air-purifying qualities, they have been proven to increase the productivity of employees at workplaces, as well as decrease the amount of sick leave. Three research question were investigated: how much energy the system requires and if it is possible to replace the energy source with an alternative energy source, how well the system stabilises and how a wireless regulation can be implemented. The final design consisted of a mictrocontroller which controlled the system, a water pump, a moisture level sensor and a plant on which everything was tested. The system was left during a four week period to see how well it managed. The project resulted in a system that managed to keep the plant alive. The energy demand of the system could be covered by solar cells instead of batteries. / Syftet med detta projekt var att utveckla ett automatiskt bevattningssystem för växter. Det är fördelaktigt att ha växter inomhus. Bland annat har det bevisats att växter i kontorslandskap ökar produktiviteten hos de personer som arbetar där, samt att antalet uttagna sjukdagar minskar. Fortsättningsvis var det tre stycken forskningsfrågor som undersöktes, hur mycket energi kräver systemet och är det möjligt att ersätta energikällan med en alternativ energikälla, hur väl stabiliserar sig systemet samt hur kan en trådlös reglering implementeras.  Den slutliga designen bestod av en mikrokontroller som styrde systemet, en vattenpump, en fuktighetssensor och en planta på vilken testerna utfördes. Systemet lämnades i fyra veckor för att se hur väl det klarade sin uppgift. Resultatet blev att växten överlevde vilket innebär att systemet fungerade. Möjligheten att byta ut batterierna mor solceller studerades och slutsatsen är att detta byte är möjligt.

Fuktskador i material är ett stort problem i dagens byggbransch, detta leder till en förbrukning av enorma resurser vid reparationer som görs för att undvika hälsorisker vid mögeltillväxt när en fuktskada inträffar. I denna rapport undersöks den kritiska relativa fuktigheten för ett korslimmat träbjälklag som uppfuktas av betongens uttorkning i grunden, där uttorkningstider för betongen beräknas i programmet TorkaS och fukttransport beräknas med hjälp av icke-stationära fuktberäkningar som utförs i datorprogrammet WUFI. Det huvudsakliga målet är att undvika fuktskador på bjälklagets underkant genom tillförande av varm luftomsättning i en mellanliggande luftspalt. Beräkningarna utförs med hänsyn till dagens klimat i Kiruna, Stockholm och Lund samt begränsas till vattencementtalen: 0,4 och 0,5, där betongens uttorkningstid innan belastning är 11 respektive 28 dagar efter gjutning. En undersökning gällande luftspalten mellan betongplattan och KL-träbjälklaget utförs, där fokus ligger på att eliminera risker för mögeltillväxt genom att beräkna den varma luftomsättningen i luftspalten och validera risker för mögeltillväxten i programmet WUFI BIO. Rapporten innehåller en teoretisk referensram som behandlar: korslimmat trä, mögel och fuktteori. Tillvägagångssätt beskrivs för alla benämnda programmen. Datasamling i form av tabeller och resultat i form av grafer redovisas. Resultatet ledde till att den relativa fuktigheten för fallen utan ventilation överstiger den kritiska nivån i alla orter och att ventilationen i luftspalten är nödvändig. Detta resulterar i luftomsättningskalkyler för alla fallen som redovisas under rubriken Resultat. / Moisture damage in materials is a major problem in today's construction sector, this leads to a consumption of enormous resources for repairs that are made to avoid health risks when mold growth occurs. This report examines the critical relative humidity of a cross-laminated timber joist, which moistures from the concrete's dehydration in the foundation, the drying times for the concrete are calculated in the program TorkaS and moisture transport are calculated using non-stationary moisture calculations that are performed in computer program WUFI. The main goal is to avoid moisture damage on the bottom of the joist by adding warm air circulation in an intermediate air gap. The calculations are carried out regarding the current climate in Kiruna, Stockholm and Lund, and limits to water–cement ratio: 0.4 and 0.5, where the concrete's drying time is 11 and 28 days after casting. An investigation of the air gap between the concrete plate and the CLT joist is carried out, focusing on eliminating the risk of mold growth by calculating the hot air circulation in the air gap and validating the risks of mold growth in the WUFI BIO program. This thesis contains theoretical references that deal with CLT, mold and moisture theory. Procedure is described for all named programs. Data collection is presented in the form of tables and results in the form of graphs. In the case without ventilation the result led to exceeding of the critical relative humidity level in all areas and ventilation in the air gap is necessary. This results in air circulation calculations for all cases, which are presented under the heading Result.