This study characterized the magnetic property and levels of heavy metals of the topsoils near a cement plant. The concentrations of five selected heavy metals (Pb, Cu, Zn and Cd) were measured on 32 topsoil samples (0–20 cm) collected near a cement plant via inductively coupled plasma/mass spectroscopy (ICP-MS).The orders of enrichment …

For a nondestructive inspection of the grinding balls, the possibilities of using the magnetic characteristics for determining the structural state and mechanical properties of white cast irons ...

White cement is typically specified to ensure clean, bright, consistent colors, including light pastels. White cement allows a wide range of color options for producing structural and architectural concrete, as well as masonry and cementitious building products. Although the final color and look of concrete and masonry materials are affected by many factors, …

Enhanced functional properties of cement pastes were achieved by introducing hard magnetic powders (NdFeB) into cement mixtures. The magnetic …

The results showed that the cement paste reinforced by magnetite nanoparticles of 20–40 nm size range had the highest compressive, flexural, and tensile …

DOI: 10.1016/J.CEMCONRES.2005.06.012 Corpus ID: 135907641; Magnetic resonance studies of cement based materials in inhomogeneous magnetic fields @article{Boguszynska2005MagneticRS, title={Magnetic resonance studies of cement based materials in inhomogeneous magnetic fields}, author={Joanna Boguszynska and …

A novel type of cement-based composite with preferentially orientated nickel-coated carbon nanotubes (Ni-CNTs) was fabricated by induction of magnetic field (MF) method for piezoresistive sensor in structural health monitoring system.The microstructures of Ni-CNTs and their aligned features in the as-fabricated composites were observed by …

In this study, the influence of an external magnetic field on the rheological properties of flowing cementitious paste containing nano-Fe 3 O 4 particles was investigated. Distribution of the nanoparticles in the cementitious paste between parallel plates was analyzed by the magnetic properties of the powder as determined by VSM measurement.

The incorporation of strong magnetic powders (NdFeB) into cement mixtures has produced improved mechanical properties of cement pastes. The magnetic …

Understanding the influence of magnetic fields on the rheological behavior of flowing cement paste is of great importance to achieve active rheology control during concrete pumping. In this study, the rheological properties of cementitious paste with water-to-cement (w/c) ratio of 0.4 and nano-Fe3O4 content of 3% are first measured …

The characteristics of a concrete mix are purely dependent on the hydration of cement that is carried forward by using the water quality used in the mix.

The whiteness is understandably one of the most important properties of white cement. This must be taken into account already in the selection of the raw materials proper. …

Nanosilica (NS) behavior on hydration and synergistic characteristics of highly alkaline (HA) white cement pastes composites containing 5–25 mass % of NS (as substitution) was studied. The hydration kinetics behavior from 1 to 100 days was examined for all the blends e.g.: whiteness reflection (Ry), setting, compressive mechanical …

In order to explore the effect of ferrite powder content on the properties of soft magnetic material, six kinds of specimens with different replacement rate of ferrite powder to sand were made by mixing cement, sand, Mn-Zn ferrite powder and water. The electromagnetic and mechanical properties of specimens were tested.

No manufacturers specify hysteresis curves or magnetic properties of steel fibres. The magnetic properties can be used for the targeted orientation of steel ferromagnetic fibres in a fresh mixture by a magnetic field [1], [2]. The minimal strength of the magnetic field for the successful orientation of fibres in the cement matrix depends …

The influence of surface modification on the magnetic properties of magnetite nanoparticles was studied. The magnetization curves of the magnetite nanoparticles were measured before and after surface modification using a vibration sample magnetometer (VSM, LakeShore 7404). ... The dielectric properties of cement paste …

The incorporation of strong magnetic powders (NdFeB) into cement mixtures has produced improved mechanical properties of cement pastes. The magnetic cement (cementitious magnet) used a simple and ...

In this paper, the mechanical properties of white Portland cement (WPC) paste mixed with basalt fiber (BF) were analyzed and its electromagnetic properties were fully investigated. First, the fluidity and strength of WPC pastes with different BF contents were tested.

This article concerns the physical and chemical properties of cement, as well as the methods to test cement properties. Physical Properties of Cement. Different blends of cement used in construction are characterized by their physical properties. Some key parameters control the quality of cement. The physical properties of good cement are …

This paper presents the effect of addition of magnetic water on workability, strength and mechanical properties of concrete tested show-encouraging results, and …

A Study on Electro-Magnetic Properties of Concrete by Using Steel Fiber and Graphite. Abhishek Verma 1 and Jagdeep Singh Gahir 1. ... The properties of conductive concrete mix that is coarse aggregates, sand and cement can be measured. In the physical significance, the data calculated in X-ray diffraction and Scanning Electronic …

The first research and testing on the utilisation of a magnetic field to produce concrete for military constructions began in Russia in 1962. Due to the influence of a magnetic field, the mass is decreased from 13 molecules to 5 or 6 molecules.Due to the smaller and less dense clusters in magnetic water compared to conventional water, the …

Depending on the temperature and impurities, C3S has seven polymorphic phases: three triclinic, three monoclinic, and a rhombohedral one [6, 7].C2S has five polymorphic forms denoted as γ, β, α′L, α′H, and α in the temperature range between room temperature and 1500°C [].The C2S phase usually found in clinker is the β monoclinic …

The dynamic pore structure of partially saturated cement-based material is rather essential to quantify its mass transport and many other properties. To clarify the influence of water removal and re-entry, the low-field nuclear magnetic resonance technique is employed to characterize the pore structure of two white cement mortars …

In order to characterize the hydration and moisture transport process of white cement containing nano-SiO 2 (NS) and nano-Al 2 O 3 (NA), the transverse relaxation time (T 2) spectrum signals of the cement paste and mortars were measured by low field nuclear magnetic resonance (LF-NMR).The effect of NS and NA on the T 2 …

Semantic Scholar extracted view of "Hydration of white cement by spin grouping NMR" by J. Mactavish et al. ... The properties of cement setting and the influence of different ... of the dynamics of liquid water in the pores of hydrating cement materials were performed by means of various nuclear magnetic resonance techniques, such as spin-echo ...

Soft magnetic material can concentrate magnetic flux and reduce electromagnetic loss during an induction heating process. The motivation of this work is to develop a soft magnetic cement composite (SMCC) material that can be used to dramatically improve the energy-saving rate during the induction heating process of …

White cement is a specialized type of cement known for its distinctive colour and properties. Unlike traditional grey cement, which derives its colour from iron oxide and other impurities, white cement is manufactured to be as white as possible.

The air pollution in large urban agglomerations can be drastically reduced by electrical mobility which covers all means of road transport: personal cars, freight cars and especially buses. All of them are dependent on the existence of charging stations that are able to ensure the charging of their batteries at home, in parking lots, on the route or in depots. …

Cement, as a binding material, is a very important building material. Almost every construction work requires cement. Therefore, the composition of cement is a matter of great interest to enginee…