...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...

... on hydration of Portland cement ( OPC ), C₃A (tricalcium aluminate, Ca₃Al₂O₆)−gypsum and pure C₃S (tricalcium silicate, Ca₃SiO₅) and on precipitation of synthetic calcium silicate hydrates (C−S−H) were studied by means of calorimetry...

...Bilguun Mend; Young Jun Lee; Do-Young Kwon; Jeong-Hwan Bang; Yong Sik Chu Hexavalent chromium in Portland cement poses significant health risks and contributes to environmental pollution. Traditional reduction methods rely on costly, resource-intensive reducing agents derived from primary raw...

... Souza Luíza Ferreira Moreira (luhfmsouza@gmail.com) 20 03 2024 02 12 2024 © 2025 Emerald Publishing Limited 2025 Emerald Publishing Limited Licensed re-use rights only autogenous shrinkage cementitious materials compressive strength Portland cement superabsorbent polymer...

...Anera Kazlagić; Dietmar Stephan; Markus Ostermann; Antonio Possolo; Jochen Vogl This study uses conventional ⁸⁷Sr/⁸⁶Sr and ¹⁴³Nd/¹⁴⁴Nd isotope and interelement ratios of Ca, Sr, K, Mn, Mg and Ti as fingerprints for provenancing ordinary Portland cements...

... environment Portland cement rheological properties volcanic cement Partial substitution of cement by materials with pozzolanic activity is a very active line of research. Specifically, the use of natural pozzolans like pumice powder and volcanic ash is adequate in earthquake zones, due...

...Qifeng Lyu; Anguo Chen; Pengfei Dai Preventing the corrosion of cementitious materials in acidic environments is crucial for the safety and durability of infrastructure. The corrosion of specimens of ordinary Portland cement (OPC) and metakaolin-based geopolymer (MKG) in 1 mol/l nitric acid...

... be achieved. The research results of this paper can provide a reference and basis for the quality evaluation of concrete structures. Here modelling non-destructive testing portland cement temperature testing Using ground-penetrating radar (GPR) to estimate the thickness and moisture content...

...Aldo F. Sosa Gallardo; John L. Provis Alternating current impedance spectroscopy (ACIS) was used to assess the effect of different sand, anhydrite and water contents on the electrochemical response of Portland cement paste in the early stages of hydration. Potential factors that may affect...

... and molecular structure formula are shown in Figure 2 . Figure 1. Infrared spectrum curve of polymer retarder PID-1 25 04 2021 04 05 2022 ICE Publishing: All rights reserved 2022 compressive strength microstructure Portland cement The development of polymer science...

... determine the mechanical properties and durability of concrete. The cement used was P.O. 42.5 ordinary Portland cement (OPC) (GB 175-2007 (SAC, 2007)), the oxide composition of which is shown in Table 1 . The particle size distributions of the cement and LPs (LP1, LP2 and LP3), as measured by laser...

... 25 10 2020 04 11 2020 ICE Publishing: All rights reserved 2021 acceleration microstructure Portland cement The stabilisation of soil with cement is widely used for structural foundations, excavation control and liquefaction reduction (Tariq and Maki, 2014). The addition...

... on the physico-mechanical and dynamic properties of cement mortars. Portland cement was partially substituted by nanostructured MWCNTs (0.2, 0.4, 0.6, 0.8 and 1.0 wt%), then NS (2, 4, 6, 8 and 10 wt%) and finally both MWCNTs and NS in different ratios. The physico-mechanical and dynamic properties...

...) nanoparticles with a nominal size of 20–40 nm and hydroxylated multi-walled CNTs (MWCNTs, 95% purity) were purchased from VCN Materials Co., Iran. The diameter and length of MWCNTs were in the range 20–30 nm and 5–10 μm, respectively. The cement used was ordinary Portland cement type 2, complying...

... of calcium aluminium silicate hydrate (C–A–S–H) were added to Portland cement systems. It was found that, with the addition of 1%, 3% and 5% C–A–S–H seeds, the hydration process was brought forward by about 2 h, 3 h and 7 h, the initial setting time was reduced by 16.4%, 25.5% and 34.5%, and the final...

... patterns of calcined CFT at different calcination temperatures Figure 4. FTIR spectrum of calcined CFT at different calcination temperatures 22 12 2018 13 08 2019 19 08 2019 ICE Publishing: All rights reserved 2019 calcined clays Portland cement pozzolans...

... dioxide concentrations. The durability of concrete used in underground structures such as oilwells, CCS facilities and so on has also been investigated experimentally. Barlet-Gouédard et al. (2007) reported that Portland cement in carbon-dioxide saturated in water at 90°C and 280 bar (28 MPa...

...Harsha Praneeth Pavani; Tezeswi Tadepalli; Ashish Kumar Agrawal Portland pozzolana cement ( PPC) and ordinary Portland cement (OPC) OPC-53 grades of cement are commonly used in India. The thermal responses of these types of Portland cement (PC) differed upon analysing the compressive strengths...

...Qi Zhang; Guang Ye On the material level, the deterioration of ordinary Portland cement (OPC) paste at elevated temperature is attributed to chemical transitions and microstructural cracking. However, few studies on the quantitative characterisation of the degradation process of OPC paste have been...

...Julian Johannes Wolf; Daniel Jansen; Friedlinde Goetz-Neunhoeffer; Jürgen Neubauer Ternary systems on the basis of calcium sulfoaluminate (CSA), ordinary Portland cement (OPC) and anhydrite are known for their rapid setting and hardening properties, which are mainly attributed to the formation...