Results 21 to 30 of about 15,071 (234)
A comparative study of experimental configurations in synchrotron pair distribution function [PDF]
, 2019 The identification and quantification of amorphous components and nanocrystalline phases with very small crystal sizes, smaller than ~3 nm, within samples containing crystalline phases is very challenging.
Ana Cuesta +12 more
core +2 more sources
Subgrade heave of sulfate attacking on cement-stabilized filler
Yantu gongcheng xuebao, 2019 A high-speed railway subgrade which experiences a continuous and severe heave after construction is investigated through the delamination deformation monitoring, expansive tests and XRD tests.
YAO Jun-kai 1, YE Yang-sheng 1, WANG Peng-cheng 2, CHEN Feng 2, CAI De-gou 2
doaj +1 more source
Frontiers in Earth Science, 2023 Introduction: In order to improve the utilization efficiency of industrial waste discharged in the process of iron and steel metallurgy, a kind of material that can replace cement for mine filling is sought.
Changlong Wang +8 more
doaj +1 more source
Effect of calcium aluminate cement variety on the hydration of Portland cement in blended system [PDF]
, 2014 Two kinds of CACs with different monocalcium aluminate (CA) contents were used in the PC/CAC (PAC) mixtures. Effects of CA and CACs on the properties of PAC were analyzed by setting times and the compressive strength tests, and also by means of ...
De Schutter, Geert +3 more
core +2 more sources
The influence of sulfate availability on rheology of fresh cement paste
Applied Rheology, 2020 Natural gypsum can degenerate into hemihydrate during cement clinker grinding which changes the physical and chemical properties of cement hydration, affecting therefore the fresh and hardened properties of cement based materials.
Mbasha Willy +2 more
doaj +1 more source
Effect of gypsum on early hydration of amorphous C12A7 and its mechanism
矿业科学学报, 2022 In order to promote the efficient application of amorphous C12A7 in early strength and rapid setting engineering materials, and understand the interaction mechanism between gypsum and amorphous C12A7, the influence of gypsum on the early hydration of ...
Tang Guanbao, Wang Dongmin
doaj +1 more source
Setting control of completely recyclable concrete with slag and aluminate cements [PDF]
, 2016 A completely recyclable concrete (CRC) is designed to have a chemical composition equivalent to the one of general raw materials for cement production. By doing so, this CRC can be used at the end of its service life in cement manufacturing without the ...
De Belie, Nele +3 more
core +2 more sources
Synthesis and mechanical properties of a calcium sulphoaluminate cement made of industrial wastes
Materiales de Construccion, 2014 Environmentally-friendly calcium sulphoaluminate clinkers were obtained from a mixture of aluminium dross, fluorgypsum, fly ash and CaCO₃ at temperatures within the range of 1100 to 1400 °C.
M. Gallardo +4 more
doaj +1 more source
Removal of sulphate and arsenic from wastewater using calcium sulfoaluminate (ye’elimite)
Frontiers in Materials, 2022 Chemical precipitation is one of the most widely known methods for treatment of industrial wastewaters with high sulphate content, where sulphate can be precipitated as practically insoluble ettringite (Ca6Al2(SO4)3(OH)12·26H2O). This treatment method is
Emma-Tuulia Nurmesniemi +7 more
doaj +1 more source
Materiales de Construccion, 2013 The examination of the recently open pit in top of head of the La Piety sculpture of Avalos confirms that the external outer of Black Limestone Calatorao (BLC) composite is made by slabs 20 cm thick joined with gypsum mortars without aggregates.
J. García-Guinea +6 more
doaj +1 more source