The ultra-early age strength of shotcrete with Portland cement-based materials in various
supporting constructions is crucial for safety and engineering efficiency. However, concerns …

A low rebound alkali-free accelerator (JD accelerator) was developed with aluminum sulfate
as the main raw material. The setting time and strength of cement with different dosages of …

The incorporation of nanomaterials has shown promise in mitigating the high long-term
strength loss of shotcrete used in underground tunnel construction. This study investigates …

Shotcrete is a crucial component of tunnel engineering. To investigate the impact of fluoride-
containing alkali-free liquid accelerators on the structural safety of shotcrete, this study …

Calcium aluminate cement (CAC) is a cement type that has superior properties such as
rapid strength gain, high resistance to high temperatures and harmful chemicals. However …

It is insufficient to enhance the strength of shotcrete by simply relying on the early strength
component aluminum sulfate in the liquid accelerator. The introduction of organic additives …

In the construction of tunnels on the Sichuan-Tibet Railway, high-temperature geothermal
problem caused by geological factors pose challenges to the use of shotcrete. To investigate …

川藏铁路隧道建设中, 存在着因地质原因引起的高温地热问题, 会对喷射混凝土的使用造成不利
的影响. 为了研究高温地热环境对喷射混凝土用水泥砂浆性能的影响, 在实验室模拟了地热环境 …