Buildings | Free Full-Text | Low-Field Nuclear Magnetic …
Mineral admixtures (MA), like fly ash (FA), silica fume (SF), and slag (S), are usually added to cement-based materials to improve their compactness and further enhance their mechanical properties, permeability resistance, and durability. In this study, low-field nuclear magnetic resonance (LF-NMR) is adopted to explore the evolution of …
THE WHITE GUIDE
WHAT IS WHITE CEMENT Cement is a powdery material which hardens when mixed with water. It serves as binder for natural and artificially processed aggregates, such as sand …
Study of the mechanical-electrical-magnetic properties and …
In this paper, a three-layered cement-based wave-absorbing board is designed and prepared by mixing wave-absorbing fillers such as nano-Si 3 N 4, multi-layer nano graphene platelets (NGPs), nano-Ni, carbon fiber (CF) and carbon black (CB) into cement slurry. The effect of the amount of wave-absorbing fillers on the mechanical properties, …
Effect of water-cement ratio on the electromagnetic …
This paper investigated the electromagnetic shielding properties and the mechanisms of tricalcium silicate (C 3 S) paste with three water-cement (W/C) ratios after long-term curing. The C 3 S pastes with three W/C ratios were tested by XRD and other tests for the qualitative and quantitative analysis of the individual phases. The …
WHITE CEMENT
The properties of white cement. The whiteness is understandably one of the most important properties of white cement. This must be taken into account already in the selection of …
Characterisation of Cement Microstructure and Pore-Water …
¹H nuclear magnetic resonance (NMR) relaxometry is used to characterise cement paste microstructure from the stand point of the pore water. Attention focuses primarily on pore-water interactions and the morphology of calcium-silicate-hydrate (C-S-H), the active phase of cement paste. The method is non-destructive and non-invasive.
magnetic properties of white cement
magnetic properties of white cement T04:01:28+00:00 Enhancement of electromagnetic shielding and Effect of hydration time on the structural and physical properties of White Portland Cement (WPC) is considered to be a critical and essential factor In this study effect of hydration time (360, 720, 1260, and 1450) min on the …
Cement
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…
A Review on Properties of Concrete with …
1757-899X/1219/1/012051. Abstract. The incorporation of strong magnetic powders (NdFeB) into cement mixtures has produced improved mechanical properties of …
Properties of NdFeB magnetic cement
Abstract. Enhanced functional properties of cement pastes were achieved by introducing hard magnetic powders (NdFeB) into cement mixtures. The magnetic cement (cementitious magnet) employed a simple and inexpensive cementitious process to form complex NdFeB magnet shapes. NdFeB particles were distributed uniformly in the …
Rheological Properties of Cement Paste with …
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, …
Effect of static magnetic field treatment on fresh concrete …
1. Introduction. Modern construction requires modern and nontraditional techniques to produce enhanced properties for the materials. Many researches have been conducted recently by manipulating concrete mixing water before conducting mixing; one of these methods is treating water with different magnetic flux densities and recording …
Magnetic Properties of Ceramic Minerals | Interceram
The presence of magnetic particles in a ceramic body or glaze, both in mineral form or as free iron, causes a wide range of issues during the firing process. In the past, such flaws were covered by ornate and colorful glazes and decoration. However, modern ceramics producers do not have the luxury of implementing such methods.
Rheological Properties of Cement Paste with Nano-Fe3O4 under Magnetic
In this study, the rheological properties of cementitious paste with water-to-cement (w/c) ratio of 0.4 and nano-Fe 3 O 4 content of 3% are first measured under magnetic field. Experimental results show that the shear stress of the cementitious paste under an external magnetic field of 0.5 T is lower than that obtained without magnetic field.
Research on the mechanical and electromagnetic properties of white
The mixture made of 50% slag and 50% white Portland cement showed, on average, compressive resistance levels between 35 MPa and 60 MPa, electrical resistivity values that were approximately five ...
White Cement: Uses, Types, Advantages, Disadvantages
White masonry cement is specifically designed for masonry work. It is formulated to provide excellent adhesion and durability when used in mortar for brick, block, and stone masonry. This type of white cement ensures a consistent color match in the mortar joints, enhancing the overall appearance of masonry projects.
Properties of concrete with magnetic mixing water
Concrete mixes were prepared using magnetic field treated mixing water and compared with regular concrete mixes that were made with normal (non-magnetized) tap water. Magnetizing the mixing water ...
Magnetic properties and heavy metal pollution of soils in …
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 ...
Magnetic properties of the micro-silica/cement matrix with …
Samples of micro-silica/cement containing iron oxide, Fe2O3, and doped with carbon-coated cobalt nanoparticles and free radical DPPH were prepared and studied by the magnetic resonance method. The concrete's main components (silica and cement) produced very …
Hydration and synergistic features of nanosilica-blended
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 …
Electromagnetic properties of cement paste after …
Research on cementitious materials, the most common building material, has been going on for over a century [1, 2].In the study of the mechanical and other properties of cementitious materials, it has been found that the water-cement ratio is an important factor affecting the strength of the material [].Normally, the smaller the water-cement …
White Cement Concrete
Properties of white cement concrete. The initial setting time of white cement is 100 minutes. The fineness of white cement is 395 kg/m 2. The brightness of white cement is 87%. The compact density of …
Pore-size resolved water vapor adsorption kinetics of white cement
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 …
White Cement
White Cement. White portland cement has essentially the same properties as gray cement, except for color. It is readily available throughout North America. The color of white cement is determined by …
Properties of Cement- Physical & Chemical
Chemical Properties of Cement. The raw materials for cement production are limestone (calcium), sand or clay (silicon), bauxite (aluminum) and iron ore, and may include shells, chalk, marl, shale, clay, blast furnace slag, slate. Chemical analysis of cement raw materials provides insight into the chemical properties of cement.
Uses of White Cement & It's Properties and Applications
6 Important Properties of White Cement: The initial setting time is 100 minutes of white cement. The fineness is 395 kg/m2 of white cement. The brightness of white cement is 87%. The compact density is 3150 kg/m3 of white density. The bulk density is 110 kg/3 of white cement. After one day, the compressive strength was 21 …
Magnetic properties and element concentrations in lichens …
The content of selected elements (Al, As, Ca, Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb, S, Ti, V and Zn) was measured in samples of the lichen Evernia prunastri exposed for 30, 90 and 180 days around a cement mill, limestone and basalt quarries and urban and agricultural areas in SW Slovakia. Lichens transplanted around the investigated quarries …
A Review on Properties of Concrete with …
PDF | The incorporation of strong magnetic powders (NdFeB) into cement mixtures has produced improved mechanical properties of cement pastes. The... | Find, read and cite all the research...
Research on the mechanical and electromagnetic …
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. See more
Magnetic properties and heavy metal pollution of soils in …
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 …