Effect of temperature and aging on the mechanical
2002.7.1 1. Introduction Temperature variation caused by the heat of hydration in mass concrete or the change of external environment has a large influence on the
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Effect of heating temperature on the properties of low-cement
13 小时之前 The basic physical and mechanical properties of five composite mixtures containing RA and BP were determined at room temperature and after exposure to 400
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Influence of testing temperature and pressure on the mechanical ...
2023.9.1 However, the simultaneous application of both high temperature and high confining pressure (150 °C/30 MPa) resulted in reduced yield stress of the well
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(PDF) Effect of the Cement Composition on the
2018.1.1 The exothermy of cement hydration causes a temperature increase and development of temperature gradients in large concrete structures. Those temperature gradients create mechanical stresses...
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Effects of elevated temperatures on the mechanical properties of ...
2023.10.26 Metrics Abstract This study explored the impact of elevated temperatures on the residual structural properties of concrete made with a non
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Materials Free Full-Text The Influence of Ambient Temperature
2020.9.2 Temperature is an important factor which influences the hydration process of cement and the properties of concrete mixture and hardened concrete. It is known
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Effect of high temperature and type of cooling on
2018.1.1 The effects of high temperatures up to 900 °C on the mechanical properties and the microstructure of cement-based pumice mortars incorporating different amounts of ground granulated blast
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Effect of elevated temperatures on properties of
2019.10.31 The results showed that the adding of WMP fibre to the concrete mixes significantly improves the concrete performance at elevated temperatures with the lower rate of strength loss along with eliminating
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Better and cheaper cement: Optimising the right clinker properties
2021.5.24 Large clinker nodules (Figure 2) are difficult to cool, transport and grind into cement. Clinker should ideally have a smaller average nodule size and a narrow nodule size range. More uniformly sized clinker is more evenly distributed into the cooler and has more consistent bed porosity, which enables more stable cooler and kiln operation.
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The Effect of Weighting Materials on Oil-Well Cement
2019.10.21 In deep hydrocarbon development wells, cement slurry with high density is required to effectively balance the high-pressure formations. The increase in the slurry density could be achieved by
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Effect of mechanical activation on the properties of Portland cement
2021.11.1 In all three mill types, mechanical properties of ground cement were improved due to an increase of specific area to approximately the same value (400 m2 kg-1).
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Effects of ground coal bottom ash on the properties of cement
2023.6.15 With the same addition of 30 wt% CBA-40, the compressive strength of cement mortar cured under 192 °C was increased by 12.66% compared with that cured under 20 °C. In general, finer CBA particles and higher curing temperature exhibited positive effects on improving the properties of cement materials.
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(PDF) The Effect of Various Grinding Aids on the Properties of Cement ...
2022.1.14 The Effect of Various Grinding Aids on the Properties of Cement and Its Compatibility with Acrylate-Based Superplasticizer. ... on the properties of cements, ... The temperature in the mill is.
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Effect of Elevated Temperature on Mechanical Properties of
2016.12.27 Effect of temperature on the physico-mechanical and mineralogical properties of homra pozzolanic cement pastes. Cement and Concrete Research, 30(11), 1835–1839. Article Google Scholar Husem, M. (2006). The effects of high temperature on compressive and flexural strengths of ordinary and high-performance concrete.
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Experimental Study on Fluid Properties of Cement-Fly Ash
There are many factors affecting the characteristics of cement-fly ash slurry in practical engineering. Thus, this paper studies the influence of multifactors on the fluid properties of cement-fly ash slurry based on water-cement ratio () (0.75, 1, 1.25, and 1.5), fly ash content (0%, 10%, 20%, 30%, 40%, and 50%) and temperature (20°C, 40°C ...
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Industrial versus Laboratory Clinker Processing Using Grinding
2015.9.14 Hence, to properly evaluate GA effect on cement properties, ... The product’s temperature leaving the mill (B1) hovered around 97 ± 3°C, and Blaine fineness was within 3850 ± 35 cm 2 /g. The resulting Ec calculated as the ratio between the consumed mill motor power and B0 was around 27.91 ± 0.2 kWh/ton.
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Correlation of coupled effects of curing stress and curing temperature
2021.3.11 Wu D, Cai SJ (2015) Coupled effect of cement hydration and temperature on hydraulic behavior of cemented tailings backfill. J Cent South Univ 22(5):1956–1964. Article Google Scholar Xu XT, Zhang WD, Fan CX, Li GS (2020) Effects of temperature, dry density and water content on the thermal conductivity of Genhe silty
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Effects of Curing Temperature on Strength of Lime-Activated Slag Cement
2017.3.17 This paper outlines the effects of curing conditions on the strength and hydration products of lime-activated slag cement. The slag cement was prepared by activating the ground granulated blast furnace slag with lime and plaster of Paris. The curing of mortar specimens was done at temperatures of 27°, 45°, 60°, 75 °C and the
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Materials Free Full-Text The Influence of Ambient Temperature
2020.9.2 The Influence of Casting and Curing Temperature on the Properties of Fresh and Hardened Concrete; Portland Cement Association: Skokie, IL, USA, 1996; p. 18. [Google Scholar] Marar, K.; Eren, Ö. Effect of cement content and water/cement ratio on fresh concrete properties without admixtures. Int. J. Phys. Sci. 2011, 6, 5752–5765.
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Effect of elevated temperatures on compressive strength and ...
2018.9.20 Feasibility of POC in different concretes, such as self compacting [36], normal [37], lightweight [38], pervious [39] concretes as well as supplementary cementitious materials [9], [10], [11], [40] have been proven, but limited information is reported on the performance at high temperature, thereby this study is investigated the effect of high
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Effect of pre-carbonation on the properties of cement paste
2022.7.1 The paper studied the effect of pre-carbonation on the C–S–H structure and investigated the positive effect of pre-carbonation on enhancing the stability of cement paste at high temperatures. OPC samples with a w/c of 0.45 were precarbonated under 20% CO 2, 80% RH, and 30 °C for one week.By comparing the performance of pre
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Effect of Modified Magnesium Oxide on the Properties of
2022.12.18 As a rapid repair material, magnesium phosphate cement (MPC) can be used under various environmental temperature conditions, but different temperatures significantly impact its strength and working performance. In this study, based on the surface modification of magnesium oxide, the working and mechanical properties of samples
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Gypsum Dehydration During Comminution and Its Effect on Cement Properties
Gypsum Dehydration During Comminution and Its Effect on Cement Properties. G. Goswami, G. Goswami. Dalmia Institute of Scientific and ... clinker was ground in plant and laboratory ball mills to examine the effect of grinding in different mills on the cement properties. Mineralogical examination showed that in the plant mill (1200 cm×260 ...
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Effects of alternative calcium sulphate-bearing materials on cement ...
2021.6.1 Cement Grinding Office (2016) reported that small percent of the total energy supplied to the mill systems is used efficiently, while the rest is converted to heat; the energy produced heats up the ground cement in the mill and can cause the ambient temperature of the mill to rise depending on the initial temperature of the clinker and
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Effect of curing temperature on hydration properties of waste glass ...
2014.9.4 The effect of curing temperature on the hydration properties of waste glass powder (GP) in cement-based materials was studied by using X-ray diffraction, thermo gravimetric and differential thermal analysis, and scanning electron microscopy techniques. The compressive strength was also tested. Test results indicate that high
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The effect of elevated temperature on the properties of cement
2017.4.15 Mechanical properties of cement mortars at elevated temperature. ... Effect of high temperature on the properties of ternary blended cement pastes and mortars. J. Therm. Anal. Calorim., 122 (2015), pp. 775-786. CrossRef View in Scopus Google Scholar [26] J.J. Gaitero, I. Campillo, A. Guerrero.
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Effects and Control of Chemical Composition of Clinker for Cement ...
2020.10.15 Cement is a substance produced by grinding a mixture of a clay and limestone and heating to a temperature of 1450°C, in which the chemical transformation occurs inside the kiln to form new ...
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Effect of clinker free lime and cement fineness on the cement ...
- Limestone and gypsum (additions) are taken from a cement mill doser (BK IV) and they dried in an oven at 105°C and 60°C, respectively to facilitate crushing and to prevent clogging in the mill. -Fly ash is taken from a cement mill doser (BK IV). They have a dry fine nature and they don't need any grinding or drying.
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