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  • Influence of calcium compounds on the mechanical ...

    Cited by: 460
  • Microstructure and mechanical properties of fly ash blended ...

    Microstructure and mechanical properties of fly ash blended cement pastes Highlights•Multiple techniques were used to study microstructure and mechanical properties.•Microstructure and mechanical properties were quantitatively studied and linked.•Two types of ...

  • Mechanical Properties and Microstructure of Class C

    Cited by: 70
  • (PDF) Mechanisms of autogenous shrinkage of alkali ...

    XRD patterns of AAS and AASF pastes cured for 1 day (a) and 7 days (b), in comparison with precursors (slag and fly ash). M, Q and H stand for mullite, quartz and hematite, respectively. +11

  • Mechanisms of autogenous shrinkage of alkali

    Author: Zhenming Li, Tianshi Lu, Xuhui Liang, Hua Dong, Guang Ye, Guang Ye
  • Mechanical properties and microstructure of

    Mechanical properties and microstructure of magnesia–fly ash pastes Article (PDF Available) in Road Materials and Pavement Design February 2018 with 92 Reads How we measure 'reads'

  • Physical and mechanical properties and micro ...

    2020-7-2  Geopolymers are highly durable and have favorable mechanical properties, and are thus regarded as an eco-friendly alternative to traditional ordinary

  • Frontiers Mechanical-Chemical Activation of Coal Fly ...

    • The mechanical activation of fly ash enhanced initial strength development substantially in the alkaline cements studied due to reaction kinetics: more ash reacted in less time. • Mechanical activation of ash affects the nature of the reaction products formed: a faster reaction rate generates more N-A-S-H or N,C-A-S-H gel and fewer ...

  • Utilization of Circulating Fluidized Bed Fly Ash as ...

    The Open Civil Engineering Journal ISSN: 1874-1495 ― Volume 14, 2020

  • Effect of Calcium Carbonate Whisker and Fly Ash on ...

    2.2. Specimen Preparation. In order to investigate the mechanical properties and microstructural mechanism of cement mortars containing CaCO 3 whisker and fly ash, different types of specimens were prepared. Cement, natural river sand, and water were used in all the mortar mixtures, along with CaCO 3 whisker and fly ash in specific mixtures. To be exact, cement mortars were classified into two ...

  • Utilization of Circulating Fluidized Bed Fly Ash as ...

    The Open Civil Engineering Journal ISSN: 1874-1495 ― Volume 14, 2020

  • Frontiers Effect of Nano Alumina on Compressive

    School of Civil and Mechanical Engineering, Curtin University, Perth, WA, Australia; This paper presents the effect of nano alumina (NA) on compressive strength and microstructure of cement paste containing high volume blast furnace slag (HVBFS) contents of 70, 80, and 90% as partial replacement of cement and combined blast furnace slag (BFS) and class F fly ash (FA) contents of 70 and 80% as ...

  • The Influence of Ground Fly Ash on Cement Hydration

    In this study, the ground fly ash is made of ordinary grade I fly ash by grinding. Compared with grade I fly ash, the influence of ground fly ash on cement hydration and mechanical property of mortar was investigated. The results show that ground fly ash can improve the hydration of cement at all the ages compared with grade I fly ash, and not only does its pozzolanic reaction start earlier ...

  • Production and Mechanical Properties of Fly ash and

    This paper presents the characterization of Al 6061 metal matrix composite (MMC) reinforced with fly ash and basalt ash produced by stir casting method. Basalt is a natural material that is found in volcanic rocks. Three sets of hybrid MMC were prepared by varying the weight fraction of the reinforcements (2.5% basalt ash + 7.5% fly ash, 5% basalt ash + 5% fly ash, 7.5% basalt ash + 2.5% fly ash).

  • Mechanical Properties and Microstructure of Class C Fly ...

    2013-4-9  surface of fly ash and disperse the fly ash, increasing the fluidity, according to reference [16]. Fly ash particles themselves are spherically shaped, thus allowing easy dispersal within the alkaline environment. Mortars were less fluid than pastes. For the mortar with 0.30 of water-to-fly ash ratio, it is too sticky to obtain the fluidity value.

  • Mechanical properties and microstructure of

    2019-5-12  An attempt has been made to develop the alkali-activated industrial by-products to reduce the production of Portland cement in many civil engineering applications. The reactive MgO–fly ash blends were reported to have the potential as a novel material for construction. This paper investigates the strength and hydration reaction of reactive MgO–fly ash blends at room temperature up to 90 days.

  • INFLUENCE OF THE COARSE FLY ASH ON THE

    2016-4-1  Samples of CEM I 42,5R cement and fly ash were dried for 1 hour at a temperature of 105°C and kept in a dessicator until the preparation. In order to determinate influence of the fly ash on the setting time, cement pastes were prepared without and with the replacement addition of fly ash in the amounts of 5, 10, 15, 20, 25, 30, and

  • Proportion and performance evaluation of fly ash-based ...

    2018-8-11  The last paper (Paper 4) investigated the mechanical performance of fly ash-based geopolymer in a fiber-reinforced composite, namely an engineered geopolymer composite (EGC). Fly ash was replaced with slag in the geopolymer. The physical and chemical interactions of these two cementitious materials have resulted in a high strength (up to 110 ...

  • Effect of high volume fly ash on mechanical properties

    The results showed that fiber reinforced concrete that included high fly ash volume achieved compressive and tensile strength values that are more than double those of concrete without fly ash. Values of other mechanical properties have also achieved significant increase due to fly ash addition.

  • 武汉理工大学材料科学与工程学院欢迎您

    2019-10-23  Microstructure and mechanical properties of fly ash blended cement pastes. Construction and Building Materials 73(1):618-625. (SCI 一区,影响因子 4.046) [30] Chuanlin Hu (胡传林), Yunge Han, Yueyi Gao, Yamei Zhang, Zongjin Li* (2014). Property

  • Utilization of Circulating Fluidized Bed Fly Ash as ...

    The Open Civil Engineering Journal ISSN: 1874-1495 ― Volume 14, 2020

  • Mechanical properties and microstructure of

    2019-5-12  An attempt has been made to develop the alkali-activated industrial by-products to reduce the production of Portland cement in many civil engineering applications. The reactive MgO–fly ash blends were reported to have the potential as a novel material for construction. This paper investigates the strength and hydration reaction of reactive MgO–fly ash blends at room temperature up to 90 days.

  • STUDY ON MECHANICAL AND DURABILITY PROPERTIES

    2020-1-20  In this study, the fly ash replacement of 30% was used for testing mechanical and durability properties of mortars and concrete as the 30% replacement is normally specified as the ASEAN Engineering Journal, Vol 10 No 1 (2020), e-ISSN 2586-9159 p.13

  • Internal curing of alkali-activated fly ash-slag pastes ...

    2018-12-1  1 Internal curing of alkali-activated fly ash-slag pastes using superabsorbent polymer Wenlin Tu a, Yu Zhu a, Guohao Fang a, Xingang Wang b, Mingzhong Zhang a,* a Advanced and Innovative Materials (AIM) Group, Department of Civil, Environmental and Geomatic Engineering, University College London, London WC1E 6BT, UK

  • A Comparative Study on Geopolymers Synthesized by ...

    2020-6-9  The findings demonstrate that Class F fly ash-based geopolymer pastes have better mechanical properties and thermo-physical performance when the heating temperature is below 500°C. On the other hand, Class C fly ash-based geopolymer specimens have better thermal performance and higher retention ratio of strengths after being exposed to higher temperatures (>800°C).

  • Efflorescence and subflorescence induced microstructural ...

    2019-6-15  Efflorescence and subflorescence induced microstructural and mechanical evolution in fly ash-based geopolymers Zuhua Zhang 1, 2*, John L. Provis 3, Xue Ma 4, Andrew Reid 5, Hao Wang 1* 1. Centre for Future Materials, University of Southern Queensland, Toowoomba, Queensland 4350,

  • Mechanical and Microstructural Characterization of Alkali ...

    2015-2-14  and solution/fly ash ratio have a significant influence on the mechanical strength of the alka li-activated fly ash pastes. Xie and Xi [15] investigated the hardening mechanisms of an alkaline-activated class F fly ash and concluded that the strength of the paste increased with the decrease of the modulus of water-glass from 1.64 to 1.0.

  • Chemical Activation of Low Calcium Fly Ash Part 1 ...

    2005-12-16  Chemical Activation of Low Calcium Fly Ash Part 1: Identification of Suitable Activators and their Dosage P. Arjunan1, M. R. Silsbee2, and D. M. Roy2, 1Custom Building Products, 6515, Salt Lake Ave, Bell, CA 90201. 2Material Research Laboratory, The Pennsylvania State University, PA 16802. KEYWORDS: low calcium fly ash, portland cement, mechanical activation, chemical activation

  • beneficio of pastes packing machinery

    beneficio to fly ash mill picture. Beneficio Fly Ash Mill Prices- Mining Machinery. Beneficio Gypsum Mill Equipment Manufacturersbeneficio fly ash milling equipment manufacturers C Diccionario T cnico de Mineros y Petroleros por Jack De La, beneficio quartz mill pricBeneficio Potassium Ore Mill Picture what is the cost of prices of limestone ...

  • Thermal Resistance Variations of Fly Ash Geopolymers ...

    The microstructural changes of fly ash, unexposed and exposed fly ash geopolymers were revealed using JSM-6460LA model Scanning Electron Microscope (JEOL) utilizing secondary electron detectors.

  • Efflorescence and subflorescence induced microstructural ...

    2019-6-15  Efflorescence and subflorescence induced microstructural and mechanical evolution in fly ash-based geopolymers Zuhua Zhang 1, 2*, John L. Provis 3, Xue Ma 4, Andrew Reid 5, Hao Wang 1* 1. Centre for Future Materials, University of Southern Queensland, Toowoomba, Queensland 4350,

  • Internal curing of alkali-activated fly ash-slag pastes ...

    2018-12-1  1 Internal curing of alkali-activated fly ash-slag pastes using superabsorbent polymer Wenlin Tu a, Yu Zhu a, Guohao Fang a, Xingang Wang b, Mingzhong Zhang a,* a Advanced and Innovative Materials (AIM) Group, Department of Civil, Environmental and Geomatic Engineering, University College London, London WC1E 6BT, UK

  • Temperature for geopolymerization of fly ash. Mechanical ...

    2020-2-12  Temperature for geopolymerization of fly ash. Mechanical behaviour Sergio Apodaca-García, Susana P. Arredondo-Rea, José M. Gómez-Soberón, Jorge L. Almaral-Sánchez, Ramón Corral-Higuera Abstract— Alkali activation of fly ash (FA) is a chemical process

  • Physical and mechanical properties and micro characteristics ...

    Fly ash-based geopolymers are prepared to validate the effectiveness and feasibility of adopting 0.05 wt.%, 0.10 wt.%, and 0.15 wt.% functionalized MWCNTs and substitution ratios of 10%-40% of fly ash with GBFS. The structure and dispersity of the

  • Effects of Aluminum on the Expansion and

    Characterizations of the pastes include expansion ratio, morphology (SEM), mechanical strength and microstructure (XRD and FTIR). It is confirmed that MSWI fly ash could be solidified through alkaline activation when using a small amount of coal fly ash to adjust the reactive silica and aluminum ratios.

  • Long-term mechanical performance of marine

    2018-11-7  Fly ash improves the strength and modulus of lime-solidified sediments but weakens the mechanical characteristics of cement-solidified sediments. The test results demonstrate that the lime–fly ash binder is capable of replacing lime and cement–fly ash binder for sediment solidification from the viewpoint of economical cost and good ability ...

  • The Influence of Fluidized Bed Combustion Fly Ash on

    Fly ashes from coal combustion in circulating fluidized bed boilers in three power plants were tested as a potential additive to cement binder in concrete. The phase composition and microstructure of cement pastes containing fluidized bed fly ash was studied. The fractions of cement substitution with fluidized bed fly ash were 20% and 30% by weight.

  • beneficio of pastes packing machinery

    beneficio to fly ash mill picture. Beneficio Fly Ash Mill Prices- Mining Machinery. Beneficio Gypsum Mill Equipment Manufacturersbeneficio fly ash milling equipment manufacturers C Diccionario T cnico de Mineros y Petroleros por Jack De La, beneficio quartz mill pricBeneficio Potassium Ore Mill Picture what is the cost of prices of limestone ...

  • Effect of fly ash and silica fume on hydration rate of ...

    The effect of fly ash and silica fume on hydration rate and strength of cement in the early stage was studied. Contrast test was applied to the complex cementitious system to investigate the hydration rate. Combined with mechanical strength, the influence of fly ash and silica fume during the hydration process of complex binder was researched.

  • Thermal Resistance Variations of Fly Ash Geopolymers ...

    The microstructural changes of fly ash, unexposed and exposed fly ash geopolymers were revealed using JSM-6460LA model Scanning Electron Microscope (JEOL) utilizing secondary electron detectors.