# compressive strength of m30 grade concrete with recycled concrete aggregate

### Recycled Aggregates

The states that do use recycled concrete aggregate (RCA) in new concrete report that concrete with RCA performs equal to concrete with natural aggregates. Most agencies specify using the material directly in the project that is being reconstructed. Recycling of concrete is a relatively simple process.

### Effect of Recycled Aggregate on Compressive Strength of ...

Effect of Recycled Aggregate on Compressive Strength of Concrete 1Prof Vimal N. Patel, ... Mix M-20 and M-35 grade were designed as per Indian Standard method and the same were used to prepare the test samples. ... 14-days Compressive strength of M-30 mix concrete with different replacement level of recycled aggregate.

### Compressive Strength of Concrete Using Recycled Concrete ...

than that of corresponding recycled aggregate concrete. The results of the study showed that recycled concrete aggregate can potentially replace completely natural aggregate in the production of both non-structural and structural concrete. Keywords: compressive strength, coarse aggregate, concrete, natural aggregate, recycled concrete aggregate.

### Vol. 4, Issue 1, January 2015 Efficacy of Established ...

M30 Grade Concrete S. Mishra1, Doyol Kenna-o2, Lagun Sonam2, ... Average compressive strength of trail mix II, III and IV samples was 37.25 N/mm2, 30.25 N/mm2 and 43.50 N/mm2 ... crushed angular aggregate j) Maximum cement content : 450 kg/m3 k) Specific gravity of coarse aggregate : 2.78 ...

### What is M20 grade concrete? - Quora

First of all in M20 grade concrete, M stands for 'mix proportion' and 20 denotes the 'characteristic compressive strength' obtained after 28 days. The grade of concrete ranges from M10 to M55. M20 is the mix proportion of cement,fine aggregates and coarse aggregates in which its ratio is 1:1 ...

### Properties of recycled aggregate and recycled aggregate ...

The development of compressive strength in recycled aggregate concrete prepared with different strengths of parent concrete aggregate i.e., RCA30 and RCA40 are almost similar trend as it is in normal concrete (M30) with respect to different testing periods.

### A Report on the Use of Recycled Aggregates in Low Grade ...

Use of Recycled Aggregates in Low Grade Concrete KK. LIU and W.H. TAM Public Works Central Laboratory ... compressive strength, etc.) to support the inclusion of these criteria in the ... criteria in the General Specification for Civil Engineering Works (Hong Kong Government, 1992) in order to promote the use of recycled aggregates in ci vii ...

### COMPRESSIVE STRENGTH OF CONCRETE WITH FLY ASH, …

compressive strength of concrete containing recycled aggregates. In the first part of the study the natural aggregates are proposed to be replaced by coarse aggregates retrieved from construction demolition waste in varying percentages i.e 20%, 30%, 40% and 50% to produce recycled aggregate concrete.

### Recycled Aggregate for Structural Concrete| Concrete ...

Much of the U.S. research focused on using crushed, hardened concrete as an aggregate in fresh concrete has been in mainline paving. Work on this topic began with a major effort in the 1980s in Minnesota. Unfortunately, most of the research focused on using recycled concrete aggregate (RCA) as a base material to the pavement.

### Mechanical Properties Of Recycled Aggregates Concrete

An experimental study was perform to examine the important properties of concrete such as workability and compressive strength with recycled aggregate as a replacement to natural aggregate .the data assembled during the course of research lead to the following conclusions. 6.1.1 Workability

### Strength of Recycled Concrete Made From Crushed Concrete ...

Compressive strength of hardened concretes made from recycled concrete coarse aggregates was studied as a function Of the compressive strength of original concretes from which the coarse aggregates were derived Also studied were properties of fresh concretes made from recycled aggregates, gradings of crusher products, properties of recycled ...

### COMPARATIVE ANALYSIS OF THE COMPRESSIVE STRENGTH …

strength concrete made with crushed brick as coarse aggregate and found that higher strength concrete (fcu = 31.0 to 45.5 N/mm2) with brick aggregate is achievable whose strength is much higher than the parent uncrushed brick implying that the compressive strength of brick aggregate concrete can be increased by decreasing its water-cement ratio.

### Mechanical properties of recycled concrete with demolished ...

Two types of recycled aggregates were used. One is the RCA and the other is the RBA. The former was obtained from the concrete cubes previously prepared in laboratory, which were mixed using water-to-cement ratio of 0.50 and have the 28-day compressive strength of about 32 MPa.

### The Fire Resistance Performance of Recycled Aggregate ...

Abstract: In order to ascertain the fire resistance performance of recycled aggregate concrete (RAC) components with different concrete compressive strengths, four full-scaled concrete columns were designed and tested under high temperature. Two of the four specimens were constructed by normal concrete with compressive strength ratings of C20

### Recycled Concrete as a Source of Aggregate

The use of crushed waste concrete as cancrete aggregate began in Europe at the end of World War II. Depletion of supplies of high grade conventional aggregates in certain regions, the need for better methods of solid waste disposal, and energy conservation have contributed to a …

### Properties of recycled aggregate and recycled aggregate ...

The experimental results indicate that the compressive strength of recycled aggregate concrete made with RCA obtained from the same grade of parent concrete is lower than the normal concrete ...

### Compressive Strength of Concrete | Cube Test, Procedure ...

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.

### Compressive Strength of Concrete Made with Quarry Rock ...

Compressive Strength of Concrete Made with ... Concrete, Compressive Strength, 10mm Gravel, Quarry Dust ... M30 and M40 grade concrete with 20mm crushed granite as coarse aggregates…

### how much quantity of cementfine aggregate and coarse ...

The Concrete mix ratio for M20 grade of concrete is 1:1.5:3 that mean 1 part of cement, 1.5 part of sand (fine aggregate) and 3 parts of aggregate (crushed stone) in volume and then batched for mixing.

### what is the compressive strength of m40 concrete

Characteristic Strength = Grade of Concrete. Defined as compressive strength of concrete specimen after 28 days of curing. M25, M30, M35, M40, etc., PDF (715 K) Soft Computing in Civil Engineering. compressive strength of recycled aggregate concrete (RAC). concrete such as M20, M25, M30, M35, M40, M45, M50, M60 and M70. The solution was.

### Effect of Steel Fibres on Compressive & Tensile Strength ...

Results of Compressive strength for M -25 & M 30 grade of concrete on cube specimen with 0%, 1.0%, 1.5% & 2% steel fibers for both mixes are shown in table and graph below: TABLE IV. Average compressive strength of concrete grade M-25 & M -30. Fig.1.Average Compressive strength of concrete grade M-25 at 7 days. n id Perc enta ge of steel fibre

### Experimental Investigation on the Propertiesof Recycled ...

strength and compressive strength characteristics with partial replacement of recycled aggregate as well as coconut shell aggregate concrete using M25 grade concrete. Keywords: Ordinary Portland cement (43 Grade), recycled aggregate, coconut shell aggregate, natural aggregate, fine aggregate, workability, compressive strength, split tensile ...

### STRENGHT AND DURABILITY ASPECTS OF RECYCLED …

Concrete of M 20, M 30, and M 40, M 50, M 60 and M 70 grades were designed. The properties of fresh and hardened recycled aggregate concrete were evaluated. The results of compressive strength test, split tensile strength, flexural strength, and permeability tests are presented in this paper.

### Properties of Different Grades of Concrete Using Mix ...

Results of the characteristics of different grades of concrete using mix design method are discussed in terms of density, compressive strength, flexural strength and workability. 4.2 Density of Specimen Table 4 shows density of concrete cubes ranging from 2441kg/m³ to …

### Properties of Concrete Using Crushed Brick as Aggregate

Four grades of concrete made with crushed brick as aggregate were tested to determine their physical and mechanical properties. Nominal compressive strength …

### Bond strength of concrete containing crushed concrete ...

variation of compressive strength of M30 grade concrete is found to be less than 10 percent in the preliminary study. The weight of the constituent materials for the M20 and M25 grade concrete is given in Table 4. Table 4 Details of M20 and M25 grade concrete with various coarse aggregate replacement ratio Mix designation Volume replacement ratio

### What is the grading of concrete? - Quora

Concrete strength is determined after 28 days of placing and curing, this strength is known as Compresssive strength of concrete. Grade of concrete shows the compressive strength of concrete. There are different grades of concrete showing different compressive strength.

### EXPERIMENTAL INVESTIGATIONS OF COARSE AGGREGATE …

The above results shows that the cube compressive strength of recycled aggregate concrete is comparable to have more compressive strength of natural aggregate concrete for all grades of concrete at 3, 7, 28 and 90 days.

### Experimental Studies on Compressive Strength ...

cast with M40 grade concrete with different replacement levels of Coarse Aggregates as 10%, 20%, 30% and 40% with Recycled Coarse Aggregates and 10%, 20%, 30%, 40% of GGBS, 0%, 5% & 10% 15% of Silica Fume. Table No.2.Average Compressive Strength for M 40 Grade Table No. 3.Average Compressive Strength for M 40 Grade 3 30%RCA+ 10%GGBS+10SF 30%RCA+

### Drying shrinkage of concrete made from recycled concrete ...

Drying shrinkage of concrete made from recycled concrete aggregate B A. Whiting University Of Wollongong ... trol the high drying shrinkage of concrete made from RCA (CSIRO 2002, Poon et al. 2007, Sagoe- ... compressive strength and 112 days of drying shrink-age. The recycled aggregate mixes were designed to

### Strength and durability of concrete containing recycled ...

The water cement ratio, cube compressive strength, coarse aggregate to cement ratio, volume fraction of recycled aggregate in recycled aggregate concrete, fine aggregate to total aggregate ratio, saturated surface dry specific gravity and water absorption were the input parameters used in the study.

### Durability Study for Normal Grade Concrete with Recycle ...

The compressive strength of concrete at 7 ... recycled concrete aggregates and granular materials for re-use in constmction industry. In order to protect the environment and for sustainable development, it ... unboWld road base and low-grade concrete. 1.6. In 2001, CED conducted a study to investigate the use of recycled aggregates in