...Luis U. D. Tambara; Janaíde C. Rocha; Ana Fernández-Jiménez The early hydration of calcium sulfoaluminate ( CSA ) cement in water ( CSAH ) and in 2 M sodium hydroxide (CSA2M), both with a liquid/solids ratio of 0.5, was investigated. Hydration kinetics were assessed using in situ X-ray diffraction...

...Wenlong Xu; Xiuhao Li; Rentai Liu; Xiao Zhang; Zhichao Chen; Zhanchao Yin; Chunyu Zhang The properties of cement grout significantly deteriorate at high temperatures, making it unable to meet the demands for reinforcement in deep engineering projects. This study employed plastic polycarboxylic...

...) was significantly smaller than the size of alite crystals in Portland cement clinker. Therefore, EBSD mapping data has to be recorded at a small step size (<0.2 µm). Phase identification by EBSD–EDX analysis revealed that, besides the target ye’elimite phase, ferrite, sodium sulfate and a monocalcium aluminate...

...Jianying Deng; Yucheng Li; Wentao Chen; Tiqiang Shan; Yanji Jin; Jianlong Guo; Jianxiong Miao; Yang Zhou Supersulfated cement ( SSC ), a low carbon dioxide binder utilising 80–90% ground granulated blast-furnace slag ( GGBS ), faces a critical challenge in balancing mechanical performance...

...Wei Guo; Yu Fan; QiLuo Li; BaoRui Hu; Tao Yang; Juan Fu; ZhaiJun Wen The extremely short setting time and relatively poor rheology performance of belite-calcium sulfosilicate-sulfoaluminate cement ( BTCSA ) slurry hinder its large-scale cast-in-situ application. This study investigated the coupling...

...Jing-Han Liu; Xiao-Bao Zuo; Yu Zhang The phase conversion of metastable products in calcium aluminate cement ( CAC ) at elevated temperatures can significantly affect its durability. This study systematically investigates the degradation and leaching behaviour of CAC-based materials in water...

...Shunxiang Wang; Xingxun Fu; Zhihai He; Mingzhi Guo; Chaofeng Liang Calcium sulfoaluminate ( CSA ) cement and Portland cement (CSA–PC) can form blends with excellent performance. Adding cellulose ethers (CEs) can further adjust the macroscopic and microscopic properties of the blends. However...

...Ningmin Ou; Meng Zhou; Xin Yan; Xiaofeng Li; Jionqi Chen; Huiyu Chao; Xiaowei Ouyang; Yiqun Guo; Mingzhong Zhang The effects of carbonation treatment on recycled concrete powder ( RP ) derived from demolished concrete and its impact on the mechanical properties of cement paste were explored...

...Hui Liu; Yunhao Ji; Chao Yuan; Jiaxin Liao; Suping Cui; Xiangming Kong In this study, the retardation mechanism of polycarboxylate ( PCE ) superplasticisers on cement hydration from the viewpoint of the dissolution–precipitation process was investigated. Effects of PCE superplasticisers...

...Maruša Mrak; Nina Daneu; Sabina Dolenec The hydration kinetics, phase assemblage, microstructure and mechanical properties of belite–ye’elimite–ferrite ( BYF ) cement containing different secondary raw materials (red mud and waste concrete) and cured at 5, 20 or 60°C were examined. Different...

...Yanqing Xia; Zhenyu Lai; Xuemei Chen; Ning Wang; Yangyang Kang; Xirui Lu High-belite calcium sulfoaluminate cement ( HBCSA ) is a low carbon dioxide binder but suffers from slow early strength development due to its low hydration rate. Adding calcium oxide (CaO) can increase the hydration rate...

..., followed by GGBS content, while lime and gypsum exhibited minimal effects. The optimised mortar achieved a 28 days compressive strength of 61.48 MPa – which is 36.90% higher than ordinary Portland cement ( OPC ) mortar. GRAC specimens with 0–100% RCA replacement were subsequently prepared...

... materials. Corresponding author Shoude Wang (13589047192@163.com) 09 10 2024 25 08 2025 © 2025 Emerald Publishing Limited 2025 Emerald Publishing Limited Licensed re-use rights only belite–ye’elimite–Q phase clinker cement cementitious materials gold mining & alumina...

...Shilin Deng; Denghui Ren; Shencheng Fan; Wang Gong; Rongen Chen; Linkun Wei; Fang Lai; Jing Li The use of co-calcined rice husk ( RH ) and red mud ( RM ) in cement mortar was investigated in this study. The effects of these additives on mechanical properties, electromagnetic shielding performance...

... 04 2025 25 08 2025 © 2025 Emerald Publishing Limited 2025 Emerald Publishing Limited Licensed re-use rights only buildings, structures & design carbon fibre cement cementitious materials composite materials concrete technology & manufacture 3D printed high-strength...

...Yu Gao; Jiahe Wang; Yanbin Tan; Jiaxuan Wang; Huajian Li The effects of aluminium sulfate ( AS ) on the fast hardening and late-strength reduction of ordinary Portland cement were investigated by measuring the setting times, compressive strength and shrinkage, and conducting calorimetry, X-ray...

...Bin Yuan; Yufeng Cao; Bihua Xu; Xingyang Zhang; Yaning Lu Phosphoaluminate cement ( PAC ) exhibits superior potential for oil/gas well cementing in environments that are rich in carbon dioxide due to its high-temperature resistance, strength, and corrosion durability. The effects of wellbore...

...Yan He; Keyang Liu; Mingjing Jiang In order to enhance the early hydration evolution as well as improve the fluidity property of cement paste, calcium silicate hydrates (C-S-Hs)/polycarboxylate (PCE) was self-synthesised by way of the co-precipitation method, and was added into cement paste...

...Xiaopeng Li; Qin Wang; Zhixiang Guo; Jian Wang; Fanchao Zeng; Wei He; Hongwei Wang; Jing Tian Compatibility issues between alkali-free accelerators (AFAs) and cement in shotcrete applications were explored, focusing on the influence of gypsum content. By conducting macro-performance tests (setting...

... of ceramic waste (CW) as cement replacement on the chloride migration of limestone aggregate concrete, based upon rapid chloride migration testing through the non-steady-state migration coefficient according to NT build 492. The chloride penetration inhibitor potential of CW in concrete was assessed through...