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Improving compressive strength of concrete by a two-step mixing

Apr 01, 1996  At 28-day age, concrete mixed by the two-step mixing method showed about 8 to 17% higher compressive strength than the concrete mixed by the normal method, depending upon the water — cement ratio, the mixing process and the type of mixer.

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Improving compressive strength of concrete by a two-step mixing

Apr 01, 1996  The properties of the two-step mixed concrete and conventional concrete are compared. At 28-day age, concrete mixed by the two-step mixing method showed about 8 to 17% higher compressive strength than the concrete mixed by the normal method, depending upon the water — cement ratio, the mixing process and the type of mixer.

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Improving compressive strength of concrete by a two-step mixing

The properties of the two-step mixed concrete and conventional concrete are compared. At 28-day age, concrete mixed by the two-step mixing method showed about 8 to 17% higher compressive strength than the concrete mixed by the normal method, depending upon the water — cement ratio, the mixing process and the type of mixer.

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Improving compressive strength of concrete by a two-step mixing

The properties of the two-step mixed concrete and conventional concrete are compared. At 28-day age, concrete mixed by the two-step mixing method showed about 8 to 17% higher compressive strength than the concrete mixed by the normal method, depending upon the water -- cement ratio, the mixing process and the type of mixer.

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3 Curing Techniques to Improve the Compressive

May 07, 2021  Curing Techniques for Improving the Compressive Strength of Concrete 1) Maintaining Moisture Ponding and Immersion Ponding is typically used to cure flat surfaces, such as pavements and floors, as earth and sand around the perimeter of the concrete surface can retain a pond of water.

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IMPROVING THE COMPRESSIVE STRENGTH OF CONCRETE BY

Improving compressive strength of concrete by a two-step. Apr 01, 1996 But, for the water-cement ratios, concrete mixed by the pre-mixing of grout method have 14.44%, 16.76 and 17.08% higher strengths than that of normal concrete, respectively.

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IMPROVING THE COMPRESSIVE STRENGTH OF CONCRETE BY

There is a general increase in the compressive strength of the concrete cubes at 0.4, 0.5 and 0.6 at 7, 14 and 28 days curing periods as the quantity of lime in the cur ing solution was increasing. The optimum compressive strength was obtained at 40%60% water/lime curing solution for all water/cement ratios and for all curing ages.

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Increasing Concrete Strength - North America

The compressive strength of concrete can be increased by: Including admixtures Adjusting the cement type and quantity Reducing the water/cement ratio Utilizing supplementary cementitious materials (SCMs) Altering the aggregates - type and gradations Additionally, high-early strength concrete can be achieved through a 4x4 Concrete System.

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How to strengthen concrete? (video) - Khan Academy

May 30, 2018  In this video, we will explore how we can use the concepts of elasticity to improve the strength of concrete. ... it has a great compressive strength compared to tensile strength in fact it turns out

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A Novel Technique on Improving the Strength of

Aug 29, 2020  Based on the optimization study the maximum cell concentrations of 10 5 cells/ml were added into the mortar mix for mix 2 (Bacillus) and mix 3 (Enterobacter) to found the influence of bacteria on the compressive strength of mortar. The mix 1 is kept as control cube which is prepared by mixing Ordinary Portland cement and sand in the ratio of 1:3.

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Curing Techniques for Improving the Compressive Strength of Concrete

May 16, 2022  The American Concrete Institute (ACI) recommends a minimum curing period corresponding to attaining 70% of the compressive strength of concrete. It is often specified that this can be achieved after seven days of curing. However, 70% strength can be reached quicker when concrete cures at higher temperatures, or when certain admixtures are used ...

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IMPROVING THE COMPRESSIVE STRENGTH OF CONCRETE

compressive strength. The 100% water and 0% lime solution was used as th e control curing medium for all the water/cement ratios. There is a general increase in the compressive strength of the concrete cubes at 0.4, 0.5 and 0.6 at 7, 14 and 28 days curing periods as the quantity of lime in the cur ing solution was increasing.

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Increasing Concrete Strength - North America

The compressive strength of concrete can be increased by: Including admixtures. Adjusting the cement type and quantity. Reducing the water/cement ratio. Utilizing supplementary cementitious materials (SCMs) Altering the

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Compressive Strength Of Concrete What you need to know

Feb 19, 2022  The compressive strength of concrete is defined as the resistance to failure under the decided force. It is the maximum load applied at any cross-sectional area. You can calculate the compressive strength of concrete by the formula, F = P / A. Where, F is the compressive strength. P is the maximum load applied in Newton.

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Improving Non-Destructive Concrete Strength Tests Using

In the case of the concrete compressive strength test, low strength and low stiffness concrete will yield a lower rebound value due to more energy absorption . During the rebound hammer test, the plunger of the rebound hammer is first pressed against the surface of the concrete, and then a gradual increase in pressure is applied until the ...

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Improving the early strength of concrete: Effect of

Nov 30, 2019  The compressive strength of concrete samples was made on specimens 10 × 10 × 10 cm, and the flexural strength and prism strength on prisms of 10 × 10 × 40 cm. These tests were carried out using a Shimadzu (Kyoto, Japan) Servopulser U-type servo-hydraulic fatigue and endurance tester with a capacity of 200 kN, according to the EN 12390-3 [46] .

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How to increase the strength of the concrete - CIVIL SITE VISIT

The strength of concrete can be increased, keeping in mind the factors on which the strength of concrete depends. 1. Mixing time – Strength of concrete increases with increase in mixing time up to 2 minutes, beyond which no significant increase in the strength is observed. This becomes much more clear with the following figure.

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How to strengthen concrete? (video) - Khan Academy

May 30, 2018  concrete is strong we love it because of its most unique property that it gets stronger and harder with time but it's not nearly as strong as it's needed to make roads and buildings out of it so then how

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Compressive Strength Of Concrete - KPSTRUCTURES

May 27, 2021  The compressive strength of Concrete defined as the resistance to failure under the action of compressive forces. Especially for concrete, compressive strength is an important parameter to determine the

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Can we increase the concrete compressive strength with adding cement

Oct 18, 2013  To increasing the compressive strength of concrete, we must increase cement and decrease water quantity. For example, M15 grade of concrete when we use50 kg of cement,480 kg aggregates and32 liters water we get15N/sq.mm compressive strength after28 days by15 cm. cube test.

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Compressive Strength of Concrete - AboutCivil.Org

Jan 29, 2017  Data Acquirement from Compression Strength: Design engineers use the specified strength to design structural elements. This specified strength is incorporated in the job contract documents and is called design

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Compressive Strength of Concrete Concrete

Jul 07, 2016  The strength of concrete is controlled by the proportioning of cement, coarse and fine aggregates, water, and various admixtures. The ratio of the water to cement is the chief factor for determining concrete strength. The

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Experimental Study on Improving the Compressive Strength of ... - Hindawi

The compressive strength of the material can be improved to some extent by changing the water-cement ratio, the proportion of each component of the material, and the curing method; however, the effect is negligible [6–8].Therefore, a method to improve the compressive strength of a cylindrical turntable by imposing external constraints is proposed in this paper.

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Why is Concrete Strong in Compression? (5 reasons)

Jan 05, 2021  The main reason why concrete is weak in tension and strong in compression is because of its composition and structure. Under compressive stress, the Interfacial Transition Zone (ITZ), which is the weakest link in concrete, tends to transfer the stress from one aggregate to the other. The strength requirement in this is low.

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Curing Techniques for Improving the Compressive Strength of Concrete

May 16, 2022  The American Concrete Institute (ACI) recommends a minimum curing period corresponding to attaining 70% of the compressive strength of concrete. It is often specified that this can be achieved after seven days of curing. However, 70% strength can be reached quicker when concrete cures at higher temperatures, or when certain admixtures are used ...

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Improving the compressive strength of concrete by curing in

Apr 01, 2018  There is a general increase in the compressive strength of the concrete cubes at 0.4, 0.5 and 0.6 at 7, 14 and 28 days curing periods as the quantity of lime in the curing solution was increasing.

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IMPROVING THE COMPRESSIVE STRENGTH OF CONCRETE

compressive strength. The 100% water and 0% lime solution was used as th e control curing medium for all the water/cement ratios. There is a general increase in the compressive strength of the concrete cubes at 0.4, 0.5 and 0.6 at 7, 14 and 28 days curing periods as the quantity of lime in the cur ing solution was increasing.

Inquire now

Curing Techniques for Improving the Compressive Strength of Concrete

May 05, 2020  Concrete curing is the process of maintaining adequate moisture in concrete within a proper temperature range in order to aid cement hydration at early ages....

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Compressive Strength of Concrete with Admixtures, How to Increase

Apr 03, 2020  Compressive Strength of Concrete with Admixtures, How to Increase Strength of Concrete (IS: 516- 1959),Often it is observed, attainment of early compressive strength in concrete is a challenge. Researchers have tried various admixtures to achieve the objective. This work addresses the issue of achieving early compressive strength in

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Improving the early strength of concrete: Effect of

Nov 30, 2019  The compressive strength of concrete samples was made on specimens 10 × 10 × 10 cm, and the flexural strength and prism strength on prisms of 10 × 10 × 40 cm. These tests were carried out using a Shimadzu (Kyoto, Japan) Servopulser U-type servo-hydraulic fatigue and endurance tester with a capacity of 200 kN, according to the EN 12390-3 [46] .

Inquire now

Compressive Strength Of Concrete What you need to know

Feb 19, 2022  The compressive strength of concrete is defined as the resistance to failure under the decided force. It is the maximum load applied at any cross-sectional area. You can calculate the compressive strength of concrete by the formula, F = P / A. Where, F is the compressive strength. P is the maximum load applied in Newton.

Inquire now

How to increase the strength of the concrete - CIVIL SITE VISIT

The strength of concrete can be increased, keeping in mind the factors on which the strength of concrete depends. 1. Mixing time – Strength of concrete increases with increase in mixing time up to 2 minutes, beyond which no significant increase in the strength is observed. This becomes much more clear with the following figure.

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Compressive Strength Of Concrete - KPSTRUCTURES

May 27, 2021  The compressive strength of Concrete defined as the resistance to failure under the action of compressive forces. Especially for concrete, compressive strength is an important parameter to determine the performance of the Concrete/Materials during service conditions. Strength of concrete is its most valuable property that determines the amount ...

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Improving Strength Properties of Concrete using Fibres: A

increase the compressive strength of concrete. In 7 days to an extent of 0.68% in 28days to an extent of 5.12% and increase the various mechanical properties of concrete mixes. Milind V Mehod:-In this experimental investigation for M30 grade of concrete to study the compressive strength and tensile strength of steel fibre reinforced concrete ...

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What are some ways to increase the strength of a concrete?

Answer (1 of 19): The strength of concrete can be increased, keeping in mind the factors on which the strength of concrete depends. Strength of concrete depends upon the following factors: 1.) Type and age of cement- The variation of strength of concrete with type of cement is shown below- Wit...

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Improving compressive strength of fly ash-based

Apr 01, 2016  In order to improve the compressive strength of geopolymer composites, this work will study the addition and varying the weight percent of basalt fibers and investigated how the structure and properties are related. ... Factors influencing the compressive strength of fly ash-based geopolymer concrete. Civ. Eng., 2 (2004), pp. 88-93. View Record ...

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Compressive Strength of Concrete and Concrete Testing

The rate of loading is 0.6 ± 0.2 N/mm 2 /s. Record the maximum force from the machine. The same procedure is followed in the testing of concrete cylinders also. Compressive strength can be calculated from the following equation. Compressive Strength = Applied Maximum Load / Top surface area of the specimen.

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Compressive Strength of Concrete with Nano Cement

Jun 09, 2021  It can be seen that the compressive strength increases as the replacement of cement with nano materials, curing days and grade of concrete increase. The increase in compressive strength was found to range between 0.71% and 31.5%. The percentage increase in the compressive strength of M20 grade was found to be more than that of M50 grade of ...

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