how to increase the strength of the concrete civil

Provide customers with tailor-made solutions

How to increase the strength of the concrete ? CIVIL ...

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. 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.

Get Price

HOW TO INCREASE CONCRETE STRENGTH - civildiary

2018-3-4  Concrete can successfully be revibrated up to about four hours from the time of mixing. Revibration up to three hours after initial vibration is found to increase the 28 days compressive strength by 25% and bond strength of plain reinforced base by 30 to 50%. If retarders are used concrete can be revibrated upto 10 hours after placing.

Get Price

3 Curing Techniques to Improve the Compressive Strength of ...

2021-5-7  Maintain the presence of water in the concrete during the early hardening period, Reduce the loss of water from the surface of the concrete, and. Accelerate concrete strength gain by supplying heat and additional moisture. The method (or combination of methods) chosen depends on factors such as availability of curing materials, size, shape, and ...

Get Price

How to Make High-Early-Strength Concrete - Advantages and ...

The high early strength concrete is achieved by using one or a combination of type III Portland cement, high cement content, low water content to cementitious materials, high freshly mixed concrete, chemical admixtures, additional cementitious materials, autoclave curing, and concrete

Get Price

Compressive Strength of Concrete with ... - Civil Allied Gyan

2020-4-3  When an admixture is to be tested specifically for air-entraining admixtures it shall be used in control concrete, such as a quantity that it produces air content in the range of 3.5 to 7 percent.

Get Price

Can we increase the concrete compressive strength with ...

2013-10-18  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.

Get Price

Everything You Need to Know About Concrete Strength Cor

2019-3-31  Terminology: Concrete strength properties and why they are important Compressive strength of concrete. This is the most common and well-accepted measurement of concrete strength to assess the performance of a given concrete mixture. It measures the ability of concrete to withstand loads that will decrease the size of the concrete.

Get Price

What is Concrete Strength and what are the factors ...

Air in concrete produces voids. Excess of water in concrete evaporate leave the voids in the concrete. Consequently, as the W/C ratio increases, the porosity of the cement paste in the concrete also increases. As the porosity increases, the compressive strength of the concrete decreases.

Get Price

Compressive Strength of Concrete -Cube Test, Procedure ...

Concrete compressive strength for general construction varies from 15 MPa (2200 psi) to 30 MPa (4400 psi) and higher in commercial and industrial structures. Compressive strength of concrete depends on many factors such as water-cement ratio, cement strength, quality of concrete material, quality control during the production of concrete, etc.

Get Price

What Are Some Ways To Increase The Strength Of Concrete ...

5- Mixing time: Strength of concrete increases with an 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. 6- Curing: Effect of curing can be understood with the following figure-. Curing is essential for optimum strength

Get Price

3 Curing Techniques to Improve the Compressive Strength of ...

2021-5-7  Maintain the presence of water in the concrete during the early hardening period, Reduce the loss of water from the surface of the concrete, and. Accelerate concrete strength gain by supplying heat and additional moisture. The method (or combination of methods) chosen depends on factors such as availability of curing materials, size, shape, and ...

Get Price

Factors affecting the compressive strength of the concrete ...

It is the most important factor for gaining the strength of concrete. The lower w/c ratio leads to a higher strength of concrete. Generally, the water/cement ratio of 0.45 to 0.60 is used. Too much water leads to segregation and voids in concrete. The water/Cement ratio is inversely proportional to the strength of concrete.

Get Price

Concrete in Tension: Tensile Strength of Concrete - Civil ...

2017-8-6  The tensile and compressive strengths of concrete are not proportional, and an increase in compressive strength is accompanied by an appreciably smaller percentage increase in tensile strength. According to the ACI Code Commentary, the tensile strength of normal-weight concrete in flexure is about 10% to 15% of the compressive strength.

Get Price

concrete strength? ,compressive strength of concrete cube ...

2020-5-6  The strength of concrete can be increased, keeping in mind this factor on which the strength of concrete depend. Strength of concrete depends upon the these factors: 1. Mixing time – Strength of concrete increases with increase in mixing time up to 2 minutes above which no significant increase in the strength is observed. .

Get Price

Everything You Need to Know About Concrete Strength Cor

2019-3-31  Terminology: Concrete strength properties and why they are important Compressive strength of concrete. This is the most common and well-accepted measurement of concrete strength to assess the performance of a given concrete mixture. It measures the ability of concrete to withstand loads that will decrease the size of the concrete.

Get Price

Reinforced Concrete Design - Cement Concrete

2017-3-28  Reinforced cement concrete: Since concrete is a brittle material and is strong in compression. It is weak in tension, so steel is used inside concrete for strengthening and reinforcing the tensile strength of concrete. The steel must have appropriate

Get Price

Compressive Strength of Concrete Concrete Cubes What ...

2016-7-7  Compressive strength as per American Codes. In case of American codes, compression strength is defined in terms of cylinder strength fc’. Here compressive strength of concrete at 28 days curing is obtained from a standard cylindrical

Get Price

Concrete Admixtures 7 Types Of Concrete ... - Dream Civil

3. To increase the strength of concrete. 4. To reduce the heat of evolution. 5. To improve the workability. 6. To inhibit the corrosion of concrete. 7. To increase the durability of concrete. 8. To increase the bond of concrete to the steel reinforcement. 9. To increase

Get Price

Modulus of Elasticity of Concrete - Civil Engineering

2021-8-16  The strength of concrete is dependent on the relative proportion and modulus of elasticity of the aggregate. To know the accurate value of elastic modulus of a concrete batch, laboratory test can be done. Also, there are some empirical formulas provided by different code to obtain the elastic modulus of Concrete.

Get Price

Factors affecting the compressive strength of the concrete ...

It is the most important factor for gaining the strength of concrete. The lower w/c ratio leads to a higher strength of concrete. Generally, the water/cement ratio of 0.45 to 0.60 is used. Too much water leads to segregation and voids in concrete. The water/Cement ratio is inversely proportional to the strength of concrete.

Get Price

How to increase insitu strength of concrete at site ...

2016-8-28  If the water cement ratio reduces, the strength of the concrete will increase. 1. For a given workability an increase in the proportion of cement in a mix has little effect on the water demand and results in a reduction in the water/cement ratio. 2. The reduction in water/cement ratio leads to an increase in strength of concrete. 3.

Get Price

OPTIMIZING THE STRENGTH AND PERMEABILITY OF

2018-2-13  particles which significantly increase the strength and durability of concrete. It can replace cement in quantities of 5-12%. 4 Experimental studies have shown that the use of silica fume, in combination with high range water reducer (to make up for the workability reduction of SF), and

Get Price

Compressive Strength of Concrete -Cube Test, Procedure ...

Concrete compressive strength for general construction varies from 15 MPa (2200 psi) to 30 MPa (4400 psi) and higher in commercial and industrial structures. Compressive strength of concrete depends on many factors such as water-cement ratio, cement strength, quality of concrete material, quality control during the production of concrete, etc.

Get Price

Compressive Strength of Concrete - CIVIL READ

2018-5-18  Concrete being the major consumable material after water makes it quite inquisitive in its nature. The strength of concrete is majorly derived from aggregates, where-as cement and sand contribute binding and workability along with flowability to concrete.. This is an in-depth article on Compressive Strength of Concrete.

Get Price

Concrete Accelerators - Definition, Examples and Effects ...

2017-3-31  Examples of Accelerators in Concrete: Calcium chloride is a common accelerator, used to accelerate the time of set and the rate of strength gain. It should meet the requirements of ASTM D 98. Excessive amounts of calcium chloride in concrete mix may result in rapid stiffening, increase

Get Price

November 2017, Volume 4, Issue 11 JETIR (ISSN 2349

2018-6-19  CONCRETE TO INCREASE THE STRENGTH OF CONCRETE BLOCK 1Abhay Kumar, 2Dr. Salini Yadav M. E. Scholar, Civil Engineering, AISECT University, Bhopal, MP, India Associate Professor, Civil, AISECT University, Bhopal, MP, India Abstract: It was need of society to identify areas where tyre rubber can be used without much investment and at mass scale.

Get Price

Effect of Age on Concrete Strength - Civil Engineering Forum

2017-5-30  German Portland cements made in 1941, when used in concrete stored outdoors, led after 30 years to a strength 2.3 times the 28-day strength. The relative increase in strength was greater at higher water/cement ratios. By comparison, Portland blast furnace cement led to a 3.1-fold increase.

Get Price

What Is Workability Of Concrete? Types And Effects On ...

An increase of w/c ratio indicates an increase of workability. Hence, the strength of concrete inversely proportional to the workability and too much workability should be avoided. Methods of Improving Workability of Concrete. To increase workability there are some ways like: 1- Increasing water/cement

Get Price

Contribution to the Concrete Strength versus Water-Cement ...

The first rarely mentioned fundamental assumptions for the strength versus water-cement ratio relationship are discussed, namely, that: (a) the strength of structural concrete is controlled by the strength of the cement paste in it; (b) the strength of a cement paste depends strongly on the porosity in it; and (c) the porosity (capillary) is a function of the water-cement ratio.

Get Price