Efficiency of metakaolin in steam cured high strength concrete

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Efficiency of metakaolin in steam cured high strength ...

Oct 15, 2017  This paper presents a study on investigating the effect of metakaolin (MK) on the hydration, microstructure and volume stability of steam cured high strength

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Efficiency of metakaolin in steam cured high strength ...

This paper presents a study on investigating the effect of metakaolin (MK) on the hydration, microstructure and volume stability of steam cured high strength

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Performance of metakaolin concrete at elevated ...

Jan 01, 2003  An experimental investigation was conducted to evaluate the performance of metakaolin (MK) concrete at elevated temperatures up to 800 °C. Eight normal and high

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Strength and Durability of High Performance Concrete Using ...

paper, Metakaolin is used as admixture to produce high strength concrete. Metakaolin can be used as a concrete constituent, replacing part of the cement

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Performance evaluation of steam cured HPC pipe piles ...

Nov 20, 2018  As shown in Table 3, the calculated portlandite content in the reference mixture after 1 d of steam curing is 9%, while its content is decreased by 49.2% when 10% of

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Influence of steam curing on the properties of concretes ...

Dec 04, 2009  In this paper, influence of steam curing on the compressive strength, ultrasonic pulse velocity, water sorptivity, chloride ion permeability, and electrical

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International Journal of Engineering Technology Research ...

Shen et al., (2017) in their paper entitled “Efficiency of metakaolin in steam cured high strength concrete” study is carried out on the effect of metakaolin on hydration, microstructure, and volume stability of steam cured high strength concrete. It is done at 8000C by combining water to binder ratio of 0.25. The conclusion derived is that ...

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Durability of metakaolin concrete to sulfate attack ...

Sep 01, 2006  Autoclaving curing was accomplished in this study by exposing concrete specimens at the age of 3 days to a high-pressure steam curing for 3 h at 2 MPa pressure using autoclave. Autoclaving curing provides high-strength and increases the durability of concrete and concrete

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Influence of Metakaolin on Strength and Microstructure of ...

The influence of metakaolin (MK) on strength and microstructure of steam-cured high-strength concrete has been investigated using compressive strength test, XRD, MIP and SEM. Three MK replacement levels were considered in the study: 5%, 10% and 15% by weight of cement. A mix double blended with 10% MK and 10% slag was prepared too. Test results have indicated that MK can

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Performance evaluation of steam cured HPC pipe piles ...

Nov 20, 2018  As shown in Table 3, the calculated portlandite content in the reference mixture after 1 d of steam curing is 9%, while its content is decreased by 49.2% when 10% of Portland cement is replaced by metakaolin, which proves again the high pozzolanic reactivity of metakaolin, especially under accelerated curing conditions. The reduced portlandite ...

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Evaluation of compressive strength of concrete with ...

Mar 17, 2021  It was observed an increase in strength with addition of metakaolin at both ages. Comparing the results in the two ages, it was verified an increase in strength for the mix designs 1:5 and 1:6 and a reduction for the mix design 1:3. Such fact can be explained by the high

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Metakaolin in Concrete: Its Properties, Advantages ...

Oct 02, 2019  Use of Metakaolin gives the following various advantages, 01. Use of Metakaolin in concrete accelerates the initial setting time of concrete. 02. It helps in development of the early age strength of concrete which allows the early removal of formwork and

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High-Performance Concrete, Chapter 17 - Memphis

Metakaolin Cementing material/durability/high strength ... Steam or autoclave curing 9. Insulation to retain heat of hydration 10. Special rapid hardening cements. High-early-strength concrete is used for prestressed concrete to allow for early stressing; precast concrete for

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武汉理工大学理学院欢迎您

Efficiency of metakaolin in steam cured high strength concrete, Construction and Building Materials.2017,152:357-366. SCI 收录. 12) Peiliang Shen*, Linnu Lu*, Yongjia He, Meijuan Rao, Zedong Fu, Fazhou Wang,Shuguang Hu.

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The effect of supplementary cementitious materials on the ...

Feb 10, 2019  The concrete cured at temperatures of 20 and 80 °C is measured at ages of 3, 14 and 28 days, as shown in Fig. 1. The compressive strength of concrete made by pure HFPC is significantly improved by increasing the curing temperature at 3 days, but shows little increase in the following ages.

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(PDF) Durability and microstructure of steam cured and ...

Autoclave curing (AC) is a concrete curing method widely used for the production of precast concrete components, especially prestressed, high-strength, concrete pipe piles [1][2] [3].AC can ...

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Influence of steam curing on the properties of concretes ...

Dec 04, 2009  In this paper, influence of steam curing on the compressive strength, ultrasonic pulse velocity, water sorptivity, chloride ion permeability, and electrical resistivity of metakaolin and silica fume blended concretes were investigated. A total of seven mixtures containing various combinations of Portland cement (PC), silica fume (SF), and metakaolin (MK) were produced with 400 kg/m3 of total ...

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Mechanical property, sorptivity and microstructure of ...

Dec 01, 2019  Cubic concrete samples of 100 mm × 100 mm × 100 mm were cast for compressive strength and sorptivity tests. After placement, concrete specimens were subjected to two different steam curing cycles with maximum temperatures of 40 °C and 60 °C, the latter one is a typical steam-curing cycle used in the production of prefabricated elements for high-speed railways in China.

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硅酸盐建筑材料国家重点实验室(武汉理工大学)

Effect of aggregate exposing and curing agent on the performance of exposed aggregate concrete, Construction and Building Materials 2017,156: 675 − 683. SCI 收录; Peiliang Shen*, Linnu Lu*, Wei Chen, Fazhou Wan, Shuguang Hu. Efficiency of metakaolin in steam cured high strength concrete, Construction and Building Materials 2017,152 :357–366.

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Early Hydration of Clinker-slag-metakaolin Combination in ...

Early Hydration of Clinker-slag-metakaolin Combination in Steam Curing Conditions, Relation With Mechanical Properties. High strength can be obtained at early ages for precast concrete elements by use of CEMI 52.5R cement (OPC) and thermal treatment (steam curing).

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(PDF) Effect of Metakaolin and Fly Ash on Properties of ...

Traditionally, strength of concrete in construction work is evaluated in terms of its 28 days compressive strength of cubes/ cylinders. This procedure requires 28 days of moist curing before ...

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STUDY ON HIGH STRENGTH CONCRETE BY USING

From the above journals it is evident that High Strength Concrete plays a vital role in construction industry. In addition to that the metakaolin and Copper slag are added and works been done 12 REFERENCES 1. Manikandan. C, Subalakshmi. R, Karthik Raja. S, Kumar. S(2011) Devlopment of high strength concrete by using

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武汉理工大学理学院欢迎您

Efficiency of metakaolin in steam cured high strength concrete, Construction and Building Materials.2017,152:357-366. SCI 收录. 12) Peiliang Shen*, Linnu Lu*, Yongjia He, Meijuan Rao, Zedong Fu, Fazhou Wang,Shuguang Hu.

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Cement Equivalence of Metakaolin for Workability ...

A series of concrete mixes with metakaolin (MK) content ranging from 0 to 30% and water/cementitious materials (W/CM) ratio varying from 0.30 to 0.50 were produced for performance testing. The results showed that adding MK up to 20% as ordinary Portland cement (OPC) replacement best improved the 28-day and 70-day cube strengths, whereas adding MK up to 30% as OPC replacement always

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(PDF) Effect of Curing Temperature on Relative Strength of ...

The performance of concrete containing metakaolin (MK), subjected to low and normal temperature curing is investigated. Cement was partially replaced (by mass) with 0, 5, 10, 15, 20 and 30% MK.

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[PDF] Effect of temperature on hydration kinetics and ...

The kaolin was activated at 800°C for 2 hours. The metakaolin andlime sludge were mixed in a ratio of 1:1. To this mixture, 5 wt.% of silica fume was added to form the final blended composition. The water/binder ratio is 0.93 by weight. The specimens were cured at temperature 20 and 60°C at 100% relative humidity (RH).

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Curing Effects on High-Strength Concrete Properties

Mar 06, 2019  This study was conducted to investigate the impact of hot and dry environments under different curing conditions on the properties of high-strength concrete. The concrete samples were prepared at a room temperature of 20°C and cured under different curing conditions. Some specimens underwent standard curing from 24 h after casting until the day of testing.

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Influences of steam and autoclave curing on the strength ...

Aug 16, 2016  After autoclave curing however, all concrete’s strength exceeds 80 MPa. Steam and autoclave curing increase the electrical charge passed through plain cement concrete by 110 and 224 %, respectively, when compared with normal curing. For steam curing, incorporating silica fume is the most efficient means to reduce the chloride permeability of ...

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龙广成_百度百科 - baike.baidu

The mechanical characteristics of steam-cured high strength concrete incorporating with lightweight aggregate. Construction and Building Materials 136 (2017... [12] Long Guangcheng, Yu Gao, Youjun Xie.

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Early High Strength Concrete Advantages and Challenges

High Strength concrete is also one of them. The history of high strength concrete is about 35 years old, in late 1960s the invention of water reducing admixtures lead to the high strength precast products and structural elements in beam were cast in situ using high strength concrete.

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Effect of Portuguese metakaolin on hydraulic lime concrete ...

It can be seen that up to 28 days of curing, of a plasticizer. concrete with metakaolin cured under water always has lower rel- Density of fresh concrete was 2240, 2220 and 2160 kg/m3, ative strength than concrete cured at 95% RH. With time, at ages 90 respectively, for series M0, M2 and M3.

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Metakaolin – We Supply Metakaolin and Silica Fume ...

Low water cement ratios, plastic vapor barriers, delayed demolding, high humidity (or steam curing) are now, and have long been, recommended as good concrete curing practice. The use of High Reactivity Metakaolin works to the root of the efflorescence problem by

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Study on Properties of Geopolymer Concrete with Metakaolin ...

In the study, the effects of different mix proportions of 4. T.R. Naik. (May 2008). “Sustainability of Concrete”. flyash and metakaolin based geopolymer concrete on both Practice Periodical on Structural Design and Construction. compressive strength and split tensile strength were (Online article).

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Ecofriendly geopolymer concrete: a comprehensive review ...

Apr 16, 2021  Metakaolin-based GPC has high strength and durability compared to ordinary Portland cement (OPC) concrete (Guo Liang et al. 2020). The chemical constituents of metakaolin directly influence the mechanical properties of GPC, the concentration of the alkali solution, and the temperature of the curing condition (Granizo et al. 2007 ).

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