This paper presents the microstructural development and hardening rate of fly ash-slag
geopolymers. The solid precursors are treated with a potassium hydroxide-silicate activator …

The nanostructural evolution during formation of geopolymers and its correlation with setting
have not been well understood. In this study, penetration resistance and ultrasonic wave …

It is critical to evaluate the strength of concrete structures during construction. Here, we
propose a remote real-time monitoring system (RRTMS) and method for determining …

Geopolymer concrete (GPC) was developed using one-part binders made from a mixture of
waste clay brick (WCB) powder, fly ash, and slag in the precursor. Its suitability for use in …

The objective of this study was to develop a method to stop geopolymer reaction at early
ages so that the molecular structure can be determined and its link to setting behavior …

The setting behavior of geopolymer pastes as a function of time was studied using two
methods: penetration resistance and ultrasonic shear wave reflection. Several starting …

Setting Time Measurement Using Ultrasonic Wave Reflection by Chul-Woo Chung, Prannoy
Suraneni, John S. Popovics, and Leslie J. Struble sponded to initial set measured using …

Concrete setting behaviour and strength development strongly influence the scheduling of
construction operations such as surfacing, trowelling, jointing, saw-cutting and formwork …

Hwangtoh is a clay that has long been used as a traditional Korean building material. In
these days, Hwangtoh is often used for plastering and flooring in newly constructed …

Sodium silicate activated, slag‐fly ash binders are potential alternative binders to Portland
cement. In this study, the early age properties of slag‐fly ash binders namely, set time, and …