Accelerators for shotcrete–Chemical composition and their effects on hydration, microstructure and properties of cement-based materials

Y Wang, C Shi, Y Ma, Y Xiao, Y Liu - Construction and Building Materials, 2021 - Elsevier
Accelerators are widely used in shotcrete to achieve rapid setting and hardening properties.
This paper reviews different chemicals of accelerators and discusses their effects on …

Development of cement dust suppression technology during shotcrete in mine of China-A review

L Chen, P Li, G Liu, W Cheng, Z Liu - Journal of Loss Prevention in the …, 2018 - Elsevier
The shotcrete has become a major technique in the support construction of underground
mine. Unfortunately, enormous amounts of cement dust may be produced during shotcrete …

Formulation of an alkali-free accelerator and its effects on hydration and mechanical properties of Portland cement

Y Wang, C Shi, L Lei, Y Ma, J Liu, X Hu - Cement and Concrete Composites, 2022 - Elsevier
An alkali-free accelerator (AMD) mainly composed of aluminum sulfate, magnesium sulfate
and diethanolamine (DEA) was formulated and its effects on hydration and mechanical …

Preparation of alkali free liquid accelerator for shotcrete with fluorosilicic acid waste liquid and its accelerating mechanism

R Yang, T He, Y Xu - Cement and Concrete Composites, 2022 - Elsevier
At present, the waste liquid of fluorosilicic acid produced by phosphate fertilizer plants in
China creates serious problems of resource waste and environmental pollution. In view of …

Influence of liquid accelerators combined with mineral admixtures on early hydration of cement pastes

R Yang, T He - Construction and Building Materials, 2021 - Elsevier
The main purpose of this paper was to investigate the influence of different liquid
accelerators (AR, liquid accelerator based on sodium aluminate; AS, liquid accelerator …

The accelerating mechanism of alkali free liquid accelerator based on fluoroaluminate for shotcrete

R Yang, T He - Construction and Building Materials, 2021 - Elsevier
In this paper, the alkali free liquid accelerator based on fluoroaluminate (AAF) was prepared,
and its effect on the setting time of cement paste and compressive strength of mortar was …

Preparation and accelerating mechanism of aluminum sulfate-based alkali-free accelerating additive for sprayed concrete

R Yang, T He, M Guan, X Guo, Y Xu, R Xu… - Construction and Building …, 2020 - Elsevier
The aluminum sulfate-based alkali-free liquid accelerating additive (AFa) was prepared by
dissolving aluminum sulfate in mother liquor (ML). The setting time and strength of different …

Effect of complexation of alkanolamine in accelerators on the initial stage of cement hydration

H Xie, X Liu, Y Zheng, B Chi, J Guo, X Dai… - … and Building Materials, 2023 - Elsevier
In this study, diethanolamine (DEA) and triethanolamine (TEA) were used to prepare a
series of liquid alkali-free accelerators to investigate the different effects of complexation of …

Low-carbon coal fly ash/superfine iron tailings-based three-dimensional printed geopolymer (CS-3DPG) rapid prototyping: The role and impact mechanism of …

H Lu, X Zhan, Z Yue, Z Xie, P Zhao, W Wang… - … and Building Materials, 2024 - Elsevier
The large accumulation of superfine iron tailings (SIT) as solid waste may lead to significant
environmental and safety risks, urgently requiring resource utilization. The preparation of …

Synergistic effect of recovering hardened cement powder and aluminum sulfate alkali-free liquid accelerator for enhancing the hydration and hardening of cement …

Z Wu, W Huang, W Zhang, J Liu, H Zhou… - Journal of Building …, 2023 - Elsevier
The hardened cement powder (HCP) produced by the concrete waste disposal process can
have a significant impact on the environment. How to effectively use HCP is the focus of …