The effect of using trimethyladamantyl-ammonium hydroxide (TMAAOH) as a silica-modifying admixture to induce early-age mineralization during alkali-activation metakaolin was investigated and reported herein. In all material formulations, the use TMAAOH induced mineralization, increased mixture stiffening in fresh state, lowered total heat reaction. activating solutions with silica moduli above ...

The healing behavior of shrinkage cavity inside the cast Ti6Al4V alloy during hot isostatic pressing (HIP) was investigated experimentally by interrupted tests. X-ray micro computed tomography used to record morphology changes before and after pressing. two-dimensional geometry obtained microCT scan in simulation study evolution real Shrinkage cavities, porosity small gas pores can be effective...

Early-age drying (immediately after casting) of mortars and the corresponding plastic shrinkage were studied using bimodal neutron/X-ray computed tomography. This novel, correlative 3D imaging mode enabled studying simultaneously without any source spurious perturbation water migration loss processes together with deformations due to shrinkage. Bimodal opens up new possibilities for dynamic cou...

expansive behavior is usually observed in soils, which contain fractions of clay minerals in their composition. water absorption of clay particles and change of natural water content of soil up to plastic limit and down to shrinkage limit will cause significant volume change in expansive soils and will result in severe damages to the structures, buildings and foundations. swelling potential is ...

The clay and non-clay minerals have been identified by XRD analysis. The non-clay minerals include quartz, crystobalite, orthoclase, microcline, plagioclase, calcite, siderite and dolomite, and the clay minerals include kaolinite (52.39%), illite (36.39%) and illite-smectite mixed layer minerals (11.21%). Kaolinite is the most dominant component in the clay mineral assemblages. The clay mineral...