Microwave curing of alkali-activated binder using hwangtoh without calcination
Source abstract
Abstract
Abstract Microwaves were used to accelerate the curing of alkali activated hwangtoh paste (AAHP); the resulting compressive strength, porosity and composition were then compared against conventional heat-cured specimens. This found that a compressive strength of ∼20 MPa can be developed within 4 h, versus 72 h with conventional heat. While the 29Si NMR analysis showed the similar trends in the chemical shift with the curing time, the MIP results showed that the microwave-cured AAHP contained a greater cumulative pore volume and mean pore size than the conventional thermal-cured AAHP of the equal strength. The compressive strength of microwave-cued AAHP was attributed to the formation of a well-crystallized hydroxysodalite phase and an internal temperature gradient generated during curing.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Concrete and Cement Materials Research · Magnesium Oxide Properties and Applications · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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