The effect of elevated temperature on the properties
2017-4-15 An increase in strength in the temperature range 105-200 °C can be explained by further hydration of unhydrated cement particles and/or an improvement of the local mechanical properties of C-S-H . The samples with an NS content up to 3% exhibited a noticeable improvement in strength.
Effect of press temperature on some properties of cement
2020-1-21 based cement panels. Cement hydration is affected by many variables, such as chemical composition, water/ cement ratio, wood/cement ratio, wood chemical properties, mineral additions and producing conditions. This study mainly aimed to investigate the effects of press temperature on some properties of three-layer cement
The Effect of Temperature on Rheological Properties of
2019-7-9 The Temperature effect on the rheological properties of the rheological properties of cement slurries is not well understood at very high temperatures because the standard oilfield equipment measure- allows ments to be performed at temperatures below 80˚C. Minimal experimental studies at
The Effect of Curing Temperature on the Properties of
2016-11-23 It was shown that temperature enhanced the early hydration. The cement pastes cured at elevated temperatures generally showed an increase in compressive strength at an early age compared to the cement paste cured at room temperature, but the strength gain decreased at later ages.
Coupled effect of cement hydration and temperature
2014-9-1 Thereafter, the model was used to demonstrate the coupled effect of cement hydration and temperature on the evolution of fresh CTB slurry's rheological properties, under various conditions (initial CTB temperature, cement to tailings ratio, and water to cement ratio). The obtained results are helpful to better understanding the rheology of CTB
Effect of temperature on the mechanical properties of
2001-8-1 Because of the sintering effect, density is increased and porosity is decreased for samples fired at 1500°C. However, better strength values are observed for samples fired at 1000°C. This decreasing trend in strength is not observed for bauxite-based samples fired at 1500°C.
Effect of High Temperature Process on Microstructure
In the comparison experiment of sintering temperature, with the increase of temperature, the flexural and compressive properties of cement gradually increased. In this test, 1200 °C is the most suitable temperature for the performance of the cement.
THE EFFECTS OF CEMENT VARIATIONS ON CONCRETE
2021-5-15 The semiadiabatic calorimeter test showed that the heat release is affected by the cement and superplasticizer interaction. While the maximum temperature of 57 degrees was obtained with plain mix at 9 hours, with SP the maximum temperature was 63 degrees also at 9 hours. SSP seemed to cause retardation as the maximum temperature of 60 degree was reached after 12 hours.
The effect of cold temperature mixing on the
The effect of cold temperature mixing on the properties of zinc phosphate cement Angle Orthod. 1976 Oct;46(4):345-50. doi: 10.1043/0003-3219(1976)046<0345:TEOCTM>2.0.CO;2. Authors G M Kendzior, K F Leinfelder, H G Hershey. PMID: 1067770 DOI: 10.1043/0003
Effect of high temperature on morphologies of fibers
2020-11-20 When the temperature was higher than 800 °C, the mechanical properties of steel fiber may decrease sharply. Hence, the reinforcing effect of steel fiber in cement-based composites would be decreased significantly at temperatures higher than 800 °C. At 900 °C, the oxidation of steel fiber fully completed from surface to center.
Effect of press temperature on some properties of cement
2020-1-21 EFFECT OF PRESS TEMPERATURE ON SOME PROPERTIES OF CEMENT BONDED PARTICLEBOARD Husnu Yel1,♠, Ayfer Donmez Cavdar2, Sevda Boran Torun3 ABSTRACT It is known that there is a correlation between hydration heat and physico-mechanical properties of wood based cement
The Effect of Temperature on Rheological Properties of
2019-4-10 The Effect of Temperature on Rheological Properties of Cement Slurry . Nmegbu C.G.J. 1, Dagde Kenneth. 2, Amua Uchechukwu Roseline. 3. 1 Department of Petroleum Engineering, Rivers State University, Port Harcourt. 2 Department of Chemical/ Petrochemical Engineering, Rivers State Universiy, Port
THE EFFECTS OF CEMENT VARIATIONS ON CONCRETE
2021-5-15 plain mix at 9 hours, with SP the maximum temperature was 63 degrees also at 9 hours. SSP seemed to cause retardation as the maximum temperature of 60 degree was reached after 12 hours. Figure 3. Effect of SP and SSP on temperature development of a mortar mix Figure 4. Examples of cement heat release or 'fingerprints' of three different
The effect of curing temperature on the properties of
This paper investigates the effect of curing temperature on the hydration, microstructure, compressive strength, and transport of cement pastes modified with TiO 2 nanoparticles. These characteristics of cement pastes were studied using non-evaporable water content measurement, X-ray diffraction (XRD), compressive strength test, electrical resistivity and porosity measurements, and scanning
Effect of press temperature on some properties of
The mixture of wood/cement/water was hand formed inside a wooden mold. Afterwards, the hand-formed panel was removed from the wooden mold and compressed in a hot press under a pressure of (18-20) kg/cm 2 for 24 hrs. In the first 8 h of pressing, 8 different temperatures for each group were applied and then the pressing continued for 16 h at ambient temperature.
Effect of Elevated Temperature on Mechanical
2016-12-27 Hager, I. (2013). Behaviour of cement concrete at high temperature. Bulletin of the Polish Academy of Sciences: Technical Sciences, 61, 145. Google Scholar Heikal, M. (2000). Effect of temperature on the physico-mechanical and mineralogical properties of homra pozzolanic cement pastes. Cement and Concrete Research, 30(11), 1835–1839.
The effect of cold temperature mixing on the
The effect of cold temperature mixing on the properties of zinc phosphate cement Angle Orthod. 1976 Oct;46(4):345-50. doi: 10.1043/0003-3219(1976)046<0345:TEOCTM>2.0.CO;2. Authors G M Kendzior, K F Leinfelder, H G Hershey. PMID: 1067770 DOI: 10.1043/0003
Effect of High Temperatures on the Microstructure of
The microstructural and compositional changes within the cement paste exposed to high temperatures were monitored by XRD, FTIR, TGA/DTA and SEM techniques to understand the nature of decomposition of C-S-H gel and the associated physicomechanical properties of thermally damaged cement paste. OPC paste (w/c ratio 0.27) was hydrated for 28 days then fired up to 750°C for 2 hours
Effects of Water Content and Temperature on Bulk
The conductive and load sensing properties are well known to be dependent on carbon nanofiber content; however, much less is known about how the conductivity of hybrid cement-CNF depend on other parameters (e.g., water to cement ratio (w/c), water saturation of pore spaces and temperatures above ambient temperature).
PhD Thesis VARIATION IN PROPERTIES OF DIFFERENT
2018-7-23 investigations on the effect of fineness of cement on properties of concrete. Fineness/blaine values were varied by grinding cement clinker with gypsum at laboratory ball mill level and its effect on properties of mortar and concrete was observed. In order to generalize the result, investigation was conducted and averaged over five cement
Effect of Elevated Temperature on the Properties of High
Effect of Elevated Temperature on the Properties of High-Strength Concrete containing Cement Supplementary Materials R. Sri Ravindrarajah, R. Lopez and H. Reslan
The effect of temperature rise on microstructural
The effect of temperature rise on cement-based materials: correlation of experimental data and a simulation approach A. Susanto1, D.A. Koleva1, K. van Breugel1 1DelftUniversity of Technology, Faculty of Civil Engineering and Geosciences, Department Materials & Environment, Stevinweg 1,
The effect of curing temperature on the properties of
This paper investigates the effect of curing temperature on the hydration, microstructure, compressive strength, and transport of cement pastes modified with TiO 2 nanoparticles. These characteristics of cement pastes were studied using non-evaporable water content measurement, X-ray diffraction (XRD), compressive strength test, electrical resistivity and porosity measurements, and scanning
The effect of cold temperature mixing on the
The effect of cold temperature mixing on the properties of zinc phosphate cement Angle Orthod. 1976 Oct;46(4):345-50. doi: 10.1043/0003-3219(1976)046<0345:TEOCTM>2.0.CO;2. Authors G M Kendzior, K F Leinfelder, H G Hershey. PMID: 1067770 DOI: 10.1043/0003
The Effect of Curing Temperature on the Properties of
This paper investigates the effect of curing temperature on the hydration, microstructure, compressive strength, and transport of cement pastes modified with TiO2 nanoparticles. These characteristics of cement pastes were studied using non-evaporable water
Temperature Effects on Rheological Properties of
However, studies on the effect of temperature on rheological properties of CPB are less frequently investigated [13–15]. Zhang et al. investigated the rheological properties of fresh cement asphalt (CA) paste and discussed the influencing factors such as type of asphalt emulsion, temperature, and time. The result showed that high temperature
The Effect of Curing Temperature on the Properties of
The Effect of Curing Temperature on the Properties of Cement Pastes Modified with TiO2 Nanoparticles Download Article: The full text article is available externally. The article you have requested is supplied via the DOAJ. View from original source.
Effect of Temperature on Flow Properties of
2014-1-1 Title: Effect of Temperature on Flow Properties of Superplasticized Cement Paste Author(s): Elson John and Ravindra Gettu Publication: Materials Journal Volume: 111 Issue: 1 Appears on pages(s): 67-76 Keywords: cement paste; fluidity; setting time; superplasticizer; temperature; water demand Date: 1/1/2014 Abstract: The effects of the ambient temperature over a range of 5 to 40°C (41 to 104
Well Integrity of High Temperature Wells: Effect of
2019-6-23 Changes in cement mineralogy and associated mechanical properties may critically affect the integrity of high temperature wells. In this study, the relation between changes in mineralogy and mechanical properties of API class G cement with 40% silica flour was investigated by exposing samples for 1-4 weeks to temperatures of 60-420°C.
PhD Thesis VARIATION IN PROPERTIES OF DIFFERENT
2018-7-23 Fineness of cement has substantial effect on the properties of fresh and hardened concrete. It is an established fact that the finenesses of Portland cements have increased during the past 50 years and are continuing to increase. Various researchers conducted detailed investigations on the effect of fineness of cement on properties of concrete.
