Abstract: Sodium hydroxide (NaOH) and sodium silicate–activated fly ash and slag-based geopolymer composite (NSFSGC) and NaOH and sodium carbonate (Na2CO3)-activated fly ash–based and slag-based GC (NNFSGC) were prepared and their ...

Abstract: Abstract To investigate the influence of the unloading rate on the mechanical response of deep surrounding rock, a self-developed confining pressure loading device equipped with a pendulum hammer is designed and utilized ...