study of compressive strength of fly ash concrete

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Comparative study on compressive strength of fly ash concrete

In this paper the effect of fly-ash on workability, setting time, density, air content, compressive strength, modulus of elasticity are studied Based on this study compressive strength v/s W/C ...

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(PDF) STUDY OF COMPRESSIVE STRENGTH OF FLY ASH

Jul 26, 2021  In this study ,investigations has been made to analyze the influence of bond strength on compressive strength of brick masonry and the compressive strength of brick prism of fly ash concrete

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(PDF) STUDY OF COMPRESSIVE STRENGTH OF FLY ASH

In the case of fly ash concrete the strength was found to be 8.36 % higher than ordinary cement mortar for 1:6 ratio cement mortar and 11.11% for 1:8 ratio cement mortar CONCLUSION1. Compressive strength of cement mortar is increasing by mixing of recron fiber up to a

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Fly Ash Concrete: A Technical Analysis for Compressive ...

Apr 24, 2018  The fly ash is blended in cement at a rate of 5 to 25% by weight of cement in steps of 5%. Compressive strength determination: In this test sample of concrete is filled in the mould of size 15cm x 15cm x 15cm and top of mould is strike off. A total number of 18 cubes were casted. Fly ash is added in place of cement in concrete in 6 specimens ...

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Compressive strength of low cement/high fly ash concrete ...

Jul 01, 1988  A concrete mixture with 200 ib/yd (120 kg/m3) cement and 300 ib/ydJ (180 kg/mJ) of Class F fly ash produced the designed compressive strength of 2000 psi (14 MPa) in 75 days' curing. Earlier work showed that the workability of high fly ash cement mixtures was excellent and their water requirement for a specific consistency was greatly reducd.

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(PDF) STUDY OF COMPRESSIVE STRENGTH OF FLY ASH CONCRETE ...

In the case of fly ash concrete the strength was found to be 8.36 % higher than ordinary cement mortar for 1:6 ratio cement mortar and 11.11% for 1:8 ratio cement mortar CONCLUSION1. Compressive strength of cement mortar is increasing by mixing of recron fiber up to a

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STUDY OF COMPRESSIVE STRENGTH OF FLY ASH

Two types of bricks are used in fly ash concrete bricks. The compressive strength of brick masonry prism with mortar mix of 1:6 and 1:8 with the variation of recron fiber quantity percentage 0%, 0.5%, 1%, 1.5% and 2% were found.. The curing was done with the help of gunny bags with water for 28 days.

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(PDF) Study on the compressive strength of fly ash based ...

To determine the Compressive strength, Tensile Split strength, Porosity, Weight and investigate the microstructure of fly ash based foam concrete. We will completely replace OPC with Fly ash Class C.

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Compressive Strength of Fly Ash Based Cement Concrete

concrete. In this paper an attempt is made for assessment of compressive strength of Fly ash based cement concrete. Concrete mixes M25, M30, are designed as per the Indian standard code (IS-10262-82) by adding, 0%, 10%, 20%, 30% and 40% of fly ash. Concrete cubes of size 150mm X 150mm X 150 mm are casted and tested for compressive strength at

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Compressive Strength of Fly-Ash-Based Geopolymer Concrete ...

Fly ash (FA) is a residual from thermal industries that has been effectively utilized in the production of FA-based geopolymer concrete (FGPC). To avoid time-consuming and costly experimental procedures, soft computing techniques, namely, random forest regression (RFR) and gene expression programming (GEP), are used in this study to develop an empirical model for the prediction of compressive ...

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Compressive strength of fly‐ash‐based geopolymer concrete ...

Feb 12, 2014  This paper presents the compressive strength of fly-ash-based geopolymer concretes at elevated temperatures of 200, 400, 600 and 800 °C. The source material used in the geopolymer concrete in this study is low-calcium fly ash according to ASTM C618 class F classification and is activated by sodium silicate (Na 2 SiO 3 ) and sodium hydroxide ...

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Fly Ash Concrete - an overview ScienceDirect Topics

In table 1 and 2 and figure 3 the linear relationship between water/cement ratio and compressive strength are given for a reference and fly ash concrete. According to the standards a maximum water/cement ratio of 0.65 is allowed. This agrees with a water/cement ratio for fly ash concrete of 0.72 and a water/cement + fly ash ratio of 0.58.

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Compressive Strength of Fiber Reinforced Concrete With Fly Ash

The cube 'K 'with a fiber percentage of 1.25% and 6% fly ash showed ultimate strength of 37.67 N/mm 2, which is about 37% more than 'A1' and 33% more than 'A2.'The compressive strength of cubes reduced, when volume fraction of the fibers used was 1.5% and fly ash 12%, which may be due to balling of fibers.

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Compressive Strength of Concrete with Partial Replacement ...

This paper present the experimental result carried out to determine workability and compressive strength of concrete at different replacement of PPC. M-25 grade of concrete (1:1.53:3) at w/c of 0.42 was designed as per IS-10262-2009. Result shows that PPC can be replaced up to 20% by fly ash without compromising compressive strength of concrete.

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(PDF) Compressive strength and durability properties of ...

The paper presents the experimental investigation conducted on Rice Husk Ash (RHA) concrete to evaluate the compressive strength and to study its durability properties.

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Effect of Fly Ash on Strength of Concrete SpringerLink

Oct 26, 2019  The present study involves replacing of cement with fly ash in the range of 30, 40 and 50% by mass of cement for M-30 grade concrete mix with 0.48 water cementitious material ratio. Concrete cubes, cylinders and prisms are cast, tested and compared in terms of strength

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Long term mechanical performance of nano-engineered high ...

High Volume Fly Ash (HVFA) concrete is a sustainable construction material which can act as a viable alternative to Portland cement (PC) concrete. This study investigates the long-term mechanical performance of two unique HVFA concrete mixes, 65% and 80% cement replacements, incorporating hydrated lime, up to 18%, and 3% nano silica. HVFA-65 concrete achieved compressive strength

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Modulus of Elasticity, Creep and Shrinkage of Concrete ...

Figure 5-11. Effects of fly ash and slag on compressive strength of concrete. - "Modulus of Elasticity, Creep and Shrinkage of Concrete – PHASE II: Part 1– Creep Study"

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Compressive strength of low cement/high fly ash concrete ...

The effect of replacing 35 to 50 percent of cement by fly ash, on the compressive strength of lean concrete mixtures (350 lbs/yd 3; 210 kg/m 3) was investigated, using two ASTM Class F and two ASTM Class C fly ashes.. The test results showed that, particularly in lean concrete, fly ash has significant effect on the properties of fresh and hardened concrete.

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Comparative Study of Compressive Strength of Concrete

Concrete with 20% and 30% replacement of cement with fly ash shows good compressive strength for 28 days than normal concrete for 0.35 w/c ratio. Abhishek Jain [2013][6] :- In this paper investigated use of fly ash as partial replacement of sand in cement mortar Syed Afzal Basha [2014][7] :- In this paper Compressive Strength of Fly Ash Based ...

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A Case Study of Low Compressive Strength of Concrete ...

Jan 01, 2015  As a result, lower concrete strength than the specified strength often found in real practices due to undesired FA characteristic. This paper presents a case study of low compressive strength of concrete containing fly ash in a project located in East Java Indonesia and steps and measures to tackle this problem are described. 2.

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Study on Compressive Strength of Concrete Mixed by Steel ...

Besides, fly ash can save costs, improve workability and improve the later strength of concrete. Four groups of concrete test blocks were tested by the combination of the two to replace cement, and the concrete appearance and compressive strength of the test blocks in different periods were tested. The experimental results show that: 1.

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Compressive strength of fly‐ash‐based geopolymer concrete ...

Feb 12, 2014  This paper presents the compressive strength of fly-ash-based geopolymer concretes at elevated temperatures of 200, 400, 600 and 800 °C. The source material used in the geopolymer concrete in this study is low-calcium fly ash according to ASTM C618 class F classification and is activated by sodium silicate (Na 2 SiO 3 ) and sodium hydroxide ...

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Compressive strength of low cement/high fly ash concrete ...

The effect of replacing 35 to 50 percent of cement by fly ash, on the compressive strength of lean concrete mixtures (350 lbs/yd 3; 210 kg/m 3) was investigated, using two ASTM Class F and two ASTM Class C fly ashes.. The test results showed that, particularly in lean concrete, fly ash has significant effect on the properties of fresh and hardened concrete.

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Study on Specific Compressive Strength of Concrete with ...

Jul 03, 2020  Therefore, this investigation is focused on the study of the variations in specific compressive strength (SCS) of concrete incorporating fly ash cenosphere (FAC) as an alternative of natural fine aggregate (NFA). By doing so, the pollution of soil, water and air due to disposal of FAC can also be solved. To fulfil the above objectives, concrete ...

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Experimental Study on Compressive Strength of Glass Fibre ...

Using fly ash in construction of concrete as an admixture improves the properties. By replacing the cement with fly ash accordingly in the range of 18%, 20%, 22% by weight of cement in M25 grade of concrete. To determine the optimum percentage of fly ash for M25 grade concrete based on Compressive strength,

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Compressive Strength of Fiber Reinforced Concrete With Fly Ash

The cube 'K 'with a fiber percentage of 1.25% and 6% fly ash showed ultimate strength of 37.67 N/mm 2, which is about 37% more than 'A1' and 33% more than 'A2.'The compressive strength of cubes reduced, when volume fraction of the fibers used was 1.5% and fly ash 12%, which may be due to balling of fibers.

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Study on The Thermal Properties of Concrete Containing ...

Slag, Fly Ash and Steel Reinforcement Bekir Erdem Bas In this study, the thermal and mechanical properties of two types of concrete were measured. The first type contained ground granulated blast furnace slag, and the second type contained Class F fly ash. The compressive and splitting tensile strength, static elastic modulus, thermal conductivity,

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Comparative Study on Strength Properties of Concrete

conducting Compressive strength test and Flexural strength test. The compression strength tests were conducted for 7days, 14 days and 28days of curing and flexural strength test were conducted for 28days of curing on a M30 grade concrete. Henceforth we are replacing the OPC by cementitious material like GGBS and fly ash. The

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Analysis of Compressive Strength of Low Volume Fly Ash ...

The study was undertaken to determine the effect of low volume fly ash on the compressive strength of concrete. The fly ash content was 10% by weight of cement. The stone dust was also incorporated for partial replacement of natural aggregate while recycled aggregate (RA) was also introduced at the varying rate of 5%, 10% and 15%.

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A study on the effect of nano silica on compressive ...

Aug 01, 2014  The effect of NS on the compressive strength development of HVFA concrete containing 50% fly ash is also studied by few researchers (e.g. , ) and the improvements in 3 days compressive strength due to addition of 2–3% NS in their studies are very similar to that observed in this study of HVFA concrete containing 40% fly ash. However, the ...

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Study on properties of bacteria-embedded fly ash concrete ...

May 10, 2019  Use of fly ash up to 30% reduces the amount of cement requirement which minimizes CO 2 gas emissions from cement industry (Van Tittelboom et al. 2010 ). Moreover, at an age of 56 days, bacteria-embedded fly ash concrete can gain strength, which can be achieved by conventional concrete

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Study of Durability of Concrete with Fly Ash as Fine ...

Apr 16, 2019  To study the durability of concrete with fly ash as fine aggregate subjected to alternative attacks of freeze-thaw and carbonation, the appearance, mass loss, relative dynamic modulus of elasticity, relative compressive strength, and carbonation depth of the concrete are investigated using cyclic tests under single carbonation, single freeze-thaw, and alternation of freeze-thaw and carbonation.

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