Durability of concrete with high cement replacement

Investigating the Compressive Strength of Concrete by Partial ...

experience it is determined that 50% or more cement replacement by fly ash, it is potential to develop sustainable, high performance concrete mixes that show higher workability, higher ultimate strength and high durability, (Malhotra, 1999). High volume fly ash concrete (HVFAC) has very low water content. Because of the

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Paper Durability of concrete with high cement replacement

The present study also indicated that an alternative durable concrete could also be made with 25 vol. % of cement replaced with silts and clay using a water/cement (w/c) ratio of 0.5. That is, the cement and water contents were less than those in OPC. Also, the cost of concrete will be lowered. 由 WWJ Chan 著作 · ‎2000 · ‎被引用 67 次 · ‎相關文章

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Durability of concrete with pitchstone fines as a partial ...

This paper investigates the durability of concrete with PF using rapid chloride penetration test (RCPT). RCPT determines the electrical conductance of concrete which indicates its resistance to penetration of chloride ions. In this study, RCPT was carried out on 28, 56 and 77-days on concrete specimens with 10, 20 and 30% PF replacement of cement.

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Factors affecting durability of concrete • Aggregate ...

Concrete with a low water-cementitious ratio (0.40 or lower) is more durable than concrete with a high water-cementitious ratio (0.50 or higher). Air-entrained concrete with a low water-cementitious ratio and an air content of 5 to 8% will withstand a great number of cycles of freezing and thawing without distress.

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Durability of High Volume Fly Ash Concrete

to rising cement demands. It improves the durability when used as replacement of cement, as an admixture in concrete and increases the strength of the concrete [2].There is normal atmospheric conditions or in the autoclave at high temperatures and pressures. Recently, fly ash has been

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Durability studies on concrete with partial replacement of ...

Incorporation of fly ash as part replacement to cement shows reliable mechanical properties, e.g., compressive strength, flexural strength etc. in comparison to ordinary Portland cement (OPC) concrete (Siddique 2004). Durability properties including water absorption, permeability and chloride penetration indicate enhanced performance with ...

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Alternatives to Cement in Concrete – A Review - IJSER

high purity commercial metakaolin to replace certain amount of cement in the concrete. Concrete properties such as strength development, durability, chloride ... 由 A Lahri 著作 · ‎相關文章

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A study on durability properties of high-performance ...

This paper presents an experimental study of combined effects of curing method and high replacement levels of blast furnace slag on the mechanical and durability properties of high performance concrete. Two different curing methods were simulated as follows: wet cured (in water) and air cured (at 20°C and 65% RH).

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Durability and Compressive Strength of High Cement ...

high strength concrete. Partial replacement of cement in SCC with various industrial byproduct wastes such as limestone power, cement kiln dust, and pulverized steel slag improves resistance to chloride penetration [7]. Other studies, however, contend that, under laboratory conditions, the durability of SCC and

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Concrete Durability - The Portland Cement Association

The production of replacement building materials depletes natural resources and can produce air and water pollution. Concrete resists weathering action, ...

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PDF Replacement of Cement in Concrete

produce high workable concrete or enables in significant reduction in free water content. The admixture to IS 9103-199 (Amendment 2nd August, 2007). The admixture used was H & R Johnson P.C. Base 28 & 163 of Endura brand. 2.6 Water Water is the most important and least expensive ingredient of concrete. It distributes the cement evenly.

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Sustainable Use of Recycled Glass Powder as Cement ...

跳至 Variation of Compressive Strength — Compressive strength of concrete decreased as RGP replacement level increased, 20 RGP and 30 RGP showed ... 由 N Tamanna 著作 · ‎2020 · ‎被引用 1 次 · ‎相關文章

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Effect of Metakaolin Content on the Properties of High ...

Sep 10, 2013 · This study presents the effect of incorporating metakaolin (MK) on the mechanical and durability properties of high strength concrete for a constant water/binder ratio of 0.3. MK mixtures with cement replacement of 5, 10 and 15 % were designed for target strength and slump of 90 MPa and 100 ± 25 mm. From the results, it was observed that 10 % replacement level was the optimum level in terms ...

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PDF Mechanical Properties and Durability of Concrete With ...

in concrete. Results show that concrete with 20% cement replacement although it has minor strength loss possess increase durability performance. Results also shows that concrete mixtures with ceramic aggregates perform better than the control concrete mixtures concerning compressive strength and chloride diffusion.

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Cement Replacement - an overview | ScienceDirect Topics

In addition, higher levels (>10%) of silica fume as cement replacement can also increase the brittleness of the concrete. Reports indicate that the splitting tensile strength of concrete containing silica fume does not improve at concentrations exceeding 15% replacement (Bhanja & Sengupta, 2005; Hooton, 1993).

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PDF Strength And Workability Characteristics Of High ...

Strength And Workability Characteristics Of High Performance Concrete With Partial Replacement Of Cement And Sand With GGBS & Robosand M. Sai Lakshmi 1 Dr. B. S. R. K Prasad 2 V. Mallikarjuna 3 S. Krishna Rao 4 1Post-Graduate Student, Department of Civil Engineering, V.R. Siddhartha Engineering College, Vijayawada - 520 007

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Mechanical Behavior of Concrete Modified by Replacement of ...

2017年1月23日 — The use of large quantities of cement leads to increasing CO2 emission ... RHA improves the compressive strength of concrete, makes finishing ... 由 MM Saravanan 著作 · ‎2016 · ‎被引用 5 次 · ‎相關文章

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Strength and Durability Study on High Performance Concrete ...

Strength and Durability Study on High Performance Concrete Replacing Cement by Mineral Admixtures - written by N. Ezhilarasi, Dr. K. Jagadeesan, ...

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Magnesium Phosphate Cement: Characteristics and Advantages

Magnesium phosphate cement (MPC) hardens rapidly and gains high strength in a short time, ranging about several hours to the level of normal strength of ordinary Portland cement concrete. The magnesium phosphate cement binder is produced from the reaction between magnesium oxide and phosphate in water at room temperature. The magnesium phosphate cement binder offers […]

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Which of the following cement replacement material is ...

The use of GGBS as replacement of cement enhances smaller reliance on PFA. In particular, GGBS is considered to be more compatible with renewable energy source objectives. The replacement level of GGBS can be as high as 70% of cement, which is about twice as much of PFA (typically replacement level is 40%).

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