Expansion of the offshore wind industry in seismically active areas has raised concerns regarding structural integrity turbines under earthquake loading. This paper details a 3D finite element study to investigate behaviour structure, and particular transition piece (TP), seismic loads. The work focuses on equivalent grouted connection TP-less designs, selected as promising design solutions for...

• A comparison of mechanochemically activated and conventionally geopolymer grouts. The influence slag/fly ash ratio sodium hydroxide molarity in grouts behavior. Mechanochemical activation processes effect on rheological fresh characteristics. Effect mechanochemical mechanism mechanical properties grout. In this research, a (MG) grout is adopted to activate slag, fly ash, hydroxide, silicate b...

Several studies on different techniques can be found retrofitting existing unreinforced masonry (URM) walls using varieties of materials ranging from reinforced plaster, grout and epoxy injectio...

Silica sol, i.e., colloidal SiO2, may be used as a low-pH injection grout for very fine fractures in the construction of deep geological repositories for radioactive waste in Sweden and in Finland. If the bentonite barrier encounters SiO2-colloid particles under conditions favorable for aggregation, there is concern that it will modify the bentonite barrier at the bentonite/bedrock interface. I...

A thermoset PMS (Polyvinyl modified silicone) type polymer additive effect on load bearing capacities of cement grouted rock bolt specimens exposed to thermal cycles was investigated with a series experimental studies. The used in this study liquid phase while adding into the fresh mix and started solidify by polymerization after being mixed well grout. silicone based product selected use becau...

This paper discusses field tests developed by the Getty Conservation Institute to evaluate injection grouts for comparison and quality control of materials and mixtures. Field test methods discussed include injection with syringe, flow with syringe, expansion and bleeding, wet density, drying shrinkage, and final setting time. Four commercial grouts and an ICCROM grout with four modified versio...