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south sudan mix design of recycled aggregate concrete

(PDF) Mix Design for Pervious Recycled Aggregate

Mix Design for Pervious Recycled Aggregate Concrete

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Mix design procedure for recycled aggregate concrete ...

01/12/1990  In this paper, modification in the existing mix design procedure has been suggested for recycled aggregate concrete of different grades using coarse aggregate as the crushed and processed natural aggre- gate concrete of lowest grade of known properties and 188 0950 - 0618/90/040187 - 06 1990 Butterworth-Heinemann Lid CONSTRUCTION BUILDING MATERIALS Vol. 4 No. 4

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Incorporating Recycled Concrete Aggregate in Pervious ...

The research methodology involved substituting the coarse aggregate in the pervious concrete mix design with 15 percent, 30 percent, 50 percent and 100 percent RCA. Cylinders were cast in the laboratory for each percentage of RCA and also a control pervious concrete mix design containing only virgin aggregate. Each of the concrete batches that were mixed was tested for slump, temperature ...

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PERMEABILITY PROPERTIES OF FINE RECYCLED AGGREGATE

In this paper, the permeability properties of fine recycled aggregate concrete are presented. The FRA used come from demolished concrete of known properties. Mixes with 10%, 30%, 50% and 100% by volume replacement of fine natural aggregates (FNA) with FRA were produced and tested for water absorption by immersion, capillary absorption, carbonation, chloride penetration and electrical resis ...

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Mix design procedure for recycled aggregate concrete ...

01/12/1990  In this paper, modification in the existing mix design procedure has been suggested for recycled aggregate concrete of different grades using coarse aggregate as the crushed and processed natural aggre- gate concrete of lowest grade of known properties and 188 0950 - 0618/90/040187 - 06 1990 Butterworth-Heinemann Lid CONSTRUCTION BUILDING MATERIALS Vol. 4 No. 4

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Concrete manufacture with un‐graded recycled

Correct particle packing may not be achieved and grading of aggregates is essential prior to mix design. The recycled aggregate was highly variable in terms of the fine particle content, which affected the water demand of the concrete., – This manufacturing practice is considered necessary because of the current trend in using waste products ...

More

Design of Concrete Mixtures with Recycled Concrete

Title: Design of Concrete Mixtures with Recycled Concrete Aggregates Author(s): Adam M. Knaack and Yahya C. Kurama Publication: Materials Journal Volume: 110 Issue: 5 Appears on pages(s): 483-494 Keywords: compressive strength; mixture design; modulus of elasticity; mortar; recycled concrete aggregate; slump; workability Date: 9/1/2013 Abstract: This paper investigates the workability ...

More

Incorporating Recycled Concrete Aggregate in Pervious ...

The research methodology involved substituting the coarse aggregate in the pervious concrete mix design with 15 percent, 30 percent, 50 percent and 100 percent RCA. Cylinders were cast in the laboratory for each percentage of RCA and also a control pervious concrete mix design containing only virgin aggregate. Each of the concrete batches that were mixed was tested for slump, temperature ...

More

PERMEABILITY PROPERTIES OF FINE RECYCLED AGGREGATE CONCRETE

In this paper, the permeability properties of fine recycled aggregate concrete are presented. The FRA used come from demolished concrete of known properties. Mixes with 10%, 30%, 50% and 100% by volume replacement of fine natural aggregates (FNA) with FRA were produced and tested for water absorption by immersion, capillary absorption, carbonation, chloride penetration and electrical resis ...

More

USE OF RECYCLED AGGREGATES IN ROAD SUB5BASE

CD waste; Road sub-base mix; Recycled aggregate concrete; Recycled basalt aggregate; Vibrated concrete blocks. ABSTRACT This paper investigates the use of construction and demolition waste in road embankment and concrete manufacturing. The aggregates are recycled from the demolition waste of a building and in particular from basalt, sandstone, structural concrete and vibrated concrete

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Design of Normal Strength Concrete Mixtures with Recycled ...

Recycled Concrete Aggregates A.M. Knaack1 and Y.C. Kurama2 ... construction recycling yard in South Bend, Indiana. Since this facility takes debris from many sources (e.g., sidewalks, buildings, bridges), the properties of the source concrete are not known. Furthermore, RCA-SB contained approximately 4.0% (by weight) deleterious substances (e.g., brick, asphalt, wood), some of which

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Mix design proposal for structural concrete using

Mix design is a process in which one determines the relative quantities of the ingredients prior to mixing to produce the desired quality of concrete. By varying the mix proportions of the ingredients, different strength grades of concrete can be obtained. Several factors, which include water cement ratio, workability, curing type and duration, sizes of coarse aggregate, and sand silt content ...

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High-Strength Structural Concrete with Recycled Aggregates

Moreover, 100% of recycled aggregate mix batches included fly ash, water/cement ratio of 0.36 and 0.43. The workability of concrete considerably reduced as the amount of recycled aggregate increased. This was evaluated through standard slump test and compacting factor test. For strength characteristics, the results showed that a gradually decreasing in compressive strength, tensile strength ...

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(PDF) “Recycled Aggregate Concrete as Structural

Recycled aggregate concrete (RAC) is a promising solution to address the challenges raised by concrete production. However, the current lack of pertinent design rules has led to a hesitance to ...

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(PDF) “Recycled Aggregate Concrete as Structural

Recycled aggregate concrete (RAC) is a promising solution to address the challenges raised by concrete production. However, the current lack of pertinent design rules has led to a hesitance to ...

More

Concrete manufacture with un‐graded recycled

Correct particle packing may not be achieved and grading of aggregates is essential prior to mix design. The recycled aggregate was highly variable in terms of the fine particle content, which affected the water demand of the concrete., – This manufacturing practice is considered necessary because of the current trend in using waste products ...

More

Design of Concrete Mixtures with Recycled Concrete

Title: Design of Concrete Mixtures with Recycled Concrete Aggregates Author(s): Adam M. Knaack and Yahya C. Kurama Publication: Materials Journal Volume: 110 Issue: 5 Appears on pages(s): 483-494 Keywords: compressive strength; mixture design; modulus of elasticity; mortar; recycled concrete aggregate; slump; workability Date: 9/1/2013 Abstract: This paper investigates the workability ...

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Recycled Concrete as Aggregate for Structural Concrete ...

- the third concrete mix had 100% of recycled coarse aggregate (R100). As all the other variables were kept constant, this research enabled us to determine the influence of the coarse recycled aggregate amount (0%, 50% and 100%) on tested concrete properties. The following properties of concrete were selected for testing: - workability (slump test) immediately after mixing and 30 minutes after ...

More

PERFORMANCE OF RECYCLED AGGREGATE CONCRETE

Recycled Aggregate Concrete (RAC) is concrete that using Recycled Aggregate (RA) as partially or fully replacement in coarse and fine aggregate. It is believed RA have been used from 1945 in concrete producing and started when World War II damaged a large quantity of concrete structures and the high demand of aggregate to rebuild the structures (Kheder and Al-Windawi, 2005). They recognised ...

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Preparation of Concrete using Gold Mine Waste

05/08/2019  Make mix design for any mix (ex. M25, for mix design, refer IS 10262). Find the quantities of fine and coarse aggregate, water and cement. Replace the quantity of fine aggregate with Gold mine waste. Make specimen of 100mm and test it on 7 th day, 14 th day and 28 th; Replace the quantity of coarse aggregate with Gold mine waste; Make specimen of 100mm and test it on 7 th day, 14 th day

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APPLICATION OF RECYCLED AGGREGATE IN CONCRETE: A

Recycled concrete aggregate has also been shown to have no significant effect on the volume response of specimens to temperature and moisture effects. PROPERTIES OF RECYCLED AGGREGATE . Based on the literature study, when demolished concrete is crushed, a certain amount of mortar and cement paste from the original concrete remains attached to stone particles in recycled aggregate

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USE OF RECYCLED AGGREGATES IN ROAD SUB5BASE

CD waste; Road sub-base mix; Recycled aggregate concrete; Recycled basalt aggregate; Vibrated concrete blocks. ABSTRACT This paper investigates the use of construction and demolition waste in road embankment and concrete manufacturing. The aggregates are recycled from the demolition waste of a building and in particular from basalt, sandstone, structural concrete and vibrated concrete

More

High-Strength Structural Concrete with Recycled Aggregates

Moreover, 100% of recycled aggregate mix batches included fly ash, water/cement ratio of 0.36 and 0.43. The workability of concrete considerably reduced as the amount of recycled aggregate increased. This was evaluated through standard slump test and compacting factor test. For strength characteristics, the results showed that a gradually decreasing in compressive strength, tensile strength ...

More

Recycled aggregates for concrete

Recycled aggregates for concrete. The concrete industry makes up approximately 30% of the total market for aggregates and it is estimated that 165 million tonnes are used annually in concrete. There is, therefore, considerable incentive to develop alternative aggregate sources based on waste materials. The aggregate products currently coming from most aggregate recycling plants are unbound ...

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Recycled Concrete as Aggregate for Structural Concrete ...

- the third concrete mix had 100% of recycled coarse aggregate (R100). As all the other variables were kept constant, this research enabled us to determine the influence of the coarse recycled aggregate amount (0%, 50% and 100%) on tested concrete properties. The following properties of concrete were selected for testing: - workability (slump test) immediately after mixing and 30 minutes after ...

More

PERFORMANCE OF RECYCLED AGGREGATE CONCRETE

Recycled Aggregate Concrete (RAC) is concrete that using Recycled Aggregate (RA) as partially or fully replacement in coarse and fine aggregate. It is believed RA have been used from 1945 in concrete producing and started when World War II damaged a large quantity of concrete structures and the high demand of aggregate to rebuild the structures (Kheder and Al-Windawi, 2005). They recognised ...

More

Design of Concrete Mixtures with Recycled Concrete

Title: Design of Concrete Mixtures with Recycled Concrete Aggregates Author(s): Adam M. Knaack and Yahya C. Kurama Publication: Materials Journal Volume: 110 Issue: 5 Appears on pages(s): 483-494 Keywords: compressive strength; mixture design; modulus of elasticity; mortar; recycled concrete aggregate; slump; workability Date: 9/1/2013 Abstract: This paper investigates the workability ...

More

APPLICATION OF RECYCLED AGGREGATE IN CONCRETE: A

Recycled concrete aggregate has also been shown to have no significant effect on the volume response of specimens to temperature and moisture effects. PROPERTIES OF RECYCLED AGGREGATE . Based on the literature study, when demolished concrete is crushed, a certain amount of mortar and cement paste from the original concrete remains attached to stone particles in recycled aggregate

More

Structural Concrete Made with Recycled Aggregates for ...

The joint design was carried out taking into account that the lower tensile strength and elastic modulus of the recycled aggregate concrete could induce a different failure mechanism of the beam-column joint (Figure 3). The results of this experimentation, carried out on elements of almost full sizes, proved that, by adopting appropriate expedients of calculation, taking into account the ...

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USE OF RECYCLED AGGREGATES IN ROAD SUB5BASE

CD waste; Road sub-base mix; Recycled aggregate concrete; Recycled basalt aggregate; Vibrated concrete blocks. ABSTRACT This paper investigates the use of construction and demolition waste in road embankment and concrete manufacturing. The aggregates are recycled from the demolition waste of a building and in particular from basalt, sandstone, structural concrete and vibrated concrete

More

PROCESSING AND PROPERTIES OF RECYCLED AGGREGATE CONCRETE ...

Creep and shrinkage of recycled aggregate concrete ----- 6 3. Experimental Procedures ----- 7 ... the mix with OD state of recycled aggregate reached zero at 165 min after mixing. In addition, the result from compressive strength test showed that AD state of recycled aggregate concrete had the highest 28 days compressive strength among the other specimens. The assumed reason of that the use of ...

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Recycled Aggregate Concrete for Transportation ...

02/12/2013  Crushing of CDW, and generation of particles of size of natural aggregate for use as replacement of natural aggregate in a concrete mix has been recognized as the most viable and sustainable solution for using the generated primarily from crushed cement concrete, it is called recycled concrete aggregate (RCA). The concrete The coarse recycled aggregate comprises of

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Recycled Concrete Aggregate Civil Engineering Forum

One form of recycled concrete aggregate is returned-to-plant concrete. This involves fresh concrete that has been returned to the batching plant, discharged from the transit mixer and left to harden. The hardened concrete is the crushed and sieved to produce RCA. RCA has seen use all around the world, particularly in North America and Europe. In 1994, Holland used 78,000 tons of RCA and ...

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Recycled Aggregates from Inert Waste

Annex 2 details the main standards and specifications relating to aggregates. The majority of recycled aggregate in Scotland is either capping material (e.g. 6F4 and 6F5) or subbase (e.g. Type 1). Some production sites can produce aggregates for concrete, such as washed sand, but this is less widespread. The WRAP specifier tool has details of ...

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