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· This study is to determine the effect of temperature on cement slurry using fluid loss control additive. The filtration properties of the cement slurry were analysed at 820F to 176 °F temperature range with 10g to 30g of various fluid loss control additive (FLCA) concentration. Results shows that cement slurry responded
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· 2. It is applicable low temperature on concrete. 3. Cost of testing is so high. 4. Time taken also too high. 5. Loss of weight in concrete CONCLUSION Through Study were carried out to know the temperature effects on concrete during exposure of heat, fire, climatically changes occurs seasonal variation has been investigated by reviewing some ...
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Static and dynamic mechanical properties of concrete are affected by temperature effect in practice. Therefore, it is necessary to investigate the corresponding influence law and mechanism. This paper demonstrates the variation of mechanical properties of concrete at temperatures from −20°C to 60°C. Temperature effects on cube compressive strength, splitting tensile strength, …
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The construction industry continues to develop and the requirements for cement performance are getting higher and higher. At the same time, in the steel industry, the discharge of steel slag is also increasing. The effective reuse of steel slag …
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· 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 panels.
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The effects of the ambient temperature over a range of 5 to 40°C (41 to 104°F) on the flow behavior of cement pastes with superplasticizers of different families were investigated.
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· Effect Of Elevated Temperature On The Properties Of High-Strength Concrete Containing Cement Supplementary Materials R Sri Ravindrarajah R Lopez & H Reslan Centre for Built Infrastructure Research, University of Technology, Sydney Summary: High-strength concrete is a material often used in the construction of high rise buildings. In the
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This paper presents an experimental investigation of the effect of temperature and thermal shock on the physical and mechanical properties of concrete (M25) incorporating electronic waste (E-waste). The concrete mixtures were prepared using 10, 20, 30, 40, 50% of E-waste plastic [high impact polystyrene (HIPS)] as a partial replacement per unit ...
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The effect of mixing method, slab temperature, and humidity on the properties of zinc phosphate and zinc silicophosphate cement
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· Being a relatively new construction material, there is a lack of temperature-dependent mechanical property data on ultra-high performance concrete (UHPC). To address this knowledge gap, this paper presents results from an experimental study on the effect of temperature on mechanical properties of UHPC.
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The effect of mixing method, slab temperature, and humidity on the properties of zinc phosphate and zinc silicophosphate cement. Shepherd WB, Leinfelder KF, Hershey HG. Angle Orthod, 48(3):219-226, 01 Jul 1978 Cited by: 8 articles | PMID: 280131
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· The effect of elevated temperatures on the weight loss of the concrete specimens is shown in Fig. 3.It increased with temperature increase. These losses were about 5% and 45% after subjecting to 200 and 1200 °C, respectively.The reduction in weight gradually increased up to 800 °C, however, there was a sharp jump in loss in weight loss beyond 800 °C.
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· Increased temperatures affect increasing initial power while reducing strength in the long term. Temperature variations can have effects on different properties of concrete. Early high temperatures affect the later strength of …
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The effects of the ambient temperature over a range of 5 to 40°C (41 to 104°F) on the flow behavior of cement pastes with superplasticizers of different families were investigated.
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· Influence of elevated temperature on mechanical properties of cement mortars is examined. • Nanosilica improves the thermal resistance of cement mortars in range of 200–400 °C. • Nanosilica helps to prevents crack extension after exposure to elevated temperatures.
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· The effects of high-temperature exposure on the chemical composition and mechanical behavior of conventional concrete are well known. However, the ever-changing world of structural engineering challenges the performance of traditional materials and encourages the development of new solutions in concrete engineering, whose fire performance needs ...
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A thorough knowledge of the behavior of cement slurries under elevatedtemperatures and pressures is necessary in order to solve properly the manyproblems presented in deep-well cementing operations. In the earlier days ofthe petroleum industry the depths of wells were shallow as compared to those oftoday, and the subsurface temperatures and pressures were …
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· 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 Harcourt.
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· properties of cement. There are many additives used in cement industry. The additives have different functions such as denser, retarder, and viscosifier. In an attempt to obtain appropriate cement, a right additive with an appropriate quantity should be added on the cement. In this study, we observed the effect of Lignosulfonate on cement.
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In meeting this objective the effects of elevated temperatures on the properties of ordinary Portland cement concrete constituent materials and concretes are summarized. The effects of elevated temperature on high-strength concrete materials are noted and their performance compared to normal strength concretes.
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· the physico-mechanical properties of the thermally damaged cement paste. What differentiate this work from that of others is that the approximate percen-tage of residual calcium hydrates (C-S-H, ettringite and calcium aluminate hy-drates) in cement pastes fired at a given temperature relative to that in unfired cement paste was estimated. 2.
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Ambient temperature and time to implantation can affect the material properties of polymethylmethacrylate bone cement, and cement intrusion depth has been shown to affect implant fixation. The purpose of this study was to examine the effects of ambient temperature and time to implantation on depth o …
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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.
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the ambient temperature on the maturing concrete depends on the time that has elapsed since the concrete mix was made. In general, it is recommended …
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· 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 …
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This study was carried out using API recommended practice 13B-2 in a cement laboratory, and the essence was to establish the effect of an increase in …
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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 content measurement, X-ray diffraction (XRD …
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High-Strength Concrete at High Temperature − An Overview Long T. Phan ABSTRACT This paper presents results of NIST's experimental program on the effects of elevated temperature exposure on the mechanical properties and potential for explosive spalling of high strength concrete (HSC).
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