This article discusses the effects of glass powder (GP) replacements and sodium hydroxide (NaOH) molarity on rheological, fresh, mechanical microstructure characteristics slag-based mechanochemical geopolymer (MG) grout. A conventionally activated grout an ordinary Portland cement (OPC) were also investigated for comparison. Four replacement ratios used (0%, 10%, 20% 30% by total precursor weig...

Despite the increasing number of studies on geopolymer-based materials, a lack information still prevails concerning use geopolymer materials for consolidation and conservation built heritage. Since introduction term “geopolymer” by Davidovits, several have pointed out geopolymers as potential replacement traditional binders, mainly due to their advantages associated with mechanical properties ...

Even though steel bar is a conventional reinforcement in soil stabilization systems, the problem of corrosion of steel may lead to vast damages especially in aggressive environments. In the past decades, Fiber Reinforced Polymer (FRP) materials have offered an effective solution to overcome the corrosion problem. Despite numerous bond stress-displacement models for reinforcements in concrete, t...

Abstract Grout is a material usually applied to enhance the mechanical properties of structural masonry. As such, demand for grout has been growing parallel Without guidelines mixing design, these products are often prepared on-site based on same concepts used preparing ordinary Portland cement-based concretes. Several still need be investigated and understood due this mixing-design approach, c...

Excessive deformation of tunnel lining structures can be identified as a common problem in Eastern China soft ground. Grouting treatment is an effective and method to actively mitigate excessive cross-sectional rings soils. However, grouting operations would introduce localized heavy disturbance the surrounding ground around nozzles, causing large-deformational soil movement. The occurrence lar...

Experimental, numerical, and theoretical analyses were conducted of the axial load resistance a novel ultrahigh-performance fiber-reinforced concrete (UHPFRC) grouted square hollow section (SHS) tube sleeve connection. The experimental study tested 10 full-scale specimens with varying shear key spacings, grout thicknesses, lengths, volume proportions steel fiber in UHPFRC. Two types failure mod...

In the past thirty years many mining projects in Chile and Peru have used: (i) polymeric geomembranes (ii) design-and-build cutoff trenches, plastic concrete slurry walls, grout curtain systems to control seepage at tailings storage facilities (TSFs). Geosynthetics are a viable alternative TSF dam for clay cores or impermeable materials, mainly because of their marked advantages cost, installat...

Abstract Rock anchors are used to stabilise large scale infrastructures. Failure of rock could threaten the stability and lead severe economic social consequences. The design is based on four principal failure modes, which breakage steel tendon, tendon-grout interface failure, grout-rock mass around anchor. current dimensioning methods uncertain due limited knowledge bond strength failure. meth...

In general, injecting grouts into small fractures, cavities, porous soil media, areas of water leakage, fixing cracks or defects in concrete, and filling spaces beneath metal bases digging anchors are widely applied because the great strength workability cement these materials. Furthermore, grout is employed effectively manufacturing semi-flexible pavement mixes. The goal this research to devel...

Some specimens reproducing three leaf stone masonry walls frequently used in Italy, have been built at DIS, Milan, using two different types of stones and tested under compression and shear, up to failure. Subsequently the damaged wallettes were repaired by injection and the effectiveness of the injection was controlled by several NDT (non destructive techniques)