aggregates for concrete ahmed ahmed academia
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(PDF) Aggregates for Concrete Ahmed Ahmed - Academia

Aggregates for Concrete The importance of using the right type and quality of aggregates cannot be overemphasized. The fine and coarse aggregates generally occupy 60% to 75% of the concrete volume (70% to 85% by mass) and strongly influence the concrete’s freshly mixed and hardened properties, mixture proportions, and economy.

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(PDF) Mix design for oil palm shell concrete Ahmed Ahmad ...

Cement and Concrete Research 31 (2001) 1323 – 1325 Mix design for oil palm shell concrete M.A. Mannan, C. Ganapathy* Civil Engineering Program, School of Engineering and Information Technology, Universiti Malaysia Sabah, 88999 Kota Kinabalu, Sabah, Malaysia Received 26 August 2000; accepted 18 June 2001 Abstract The mix design of lightweight concrete using oil palm shell (OPS) as aggregate ...

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Ahmed Ahmad University of East London - Academia

Jan 01, 2001  The 28-day compressive strengths of OPS concrete designed according to the ACI method for conventional concrete and methods mentioned in references [A. Short, W. Kinniburgh, Lightweight Concrete, third ed., Applied Science Publishers, London, 1978; M.S. Shetty, Concrete Technology, S. Chand, India, 1993] for lightweight aggregate concrete have ...

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(PDF) Introductory behavior of rubber concrete Ahmed ...

Also, the rubber concrete was lightweight concrete compared with the conventional cement concrete as its density ranged from 1.78 to 2.06 g/cm 3 depending on the amount of the aggregates.With a material such as concrete, which contains void spaces of various sizes and shapes in the matrix and microcracks at the transition zone between the ...

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(PDF) A COMPARATIVE ANALYSIS OF CONCRETE ... - Academia

Fresh properties of Portland cement concrete Slump The concrete produced with igneous rock-crushed granite stone and sedimentary rock - limestone aggregates recorded a medium workability with slump values of 32.5, 30.5 and 32 mm for concrete grade of 20 N/mm2, and 32, 30.5 and 31.5 mm for 30 N/mm2 concrete grade, respectively while that of ...

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Incorporating Recycled Concrete Aggregate ... - academia

Incorporating Recycled Concrete Aggregate in Pervious Concrete Pavements Rabiah Rizvi, BASc Candidate (Principal Author) Susan L. Tighe, PhD, PEng, Canada Research Chair in Pavement and Infrastructure Management, Professor, Jodi Norris, CET, Research Technician Vimy Henderson, BASc, MASc Candidate Centre for Pavement and Transportation Technology Civil and Environmental

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CRUSHED PLASTIC WASTE IN CONCRETE - academia

Hardened concrete The above table represent the 7 days of Compressive Strength of Conventional concrete and replacement of 5.1 Fresh concrete test: coarse aggregate by Plastic Waste as 10%, 20%, 30% as 34.76 N/mm 2 , 29.64 N/mm 2 , 27.41 N/mm 2 , 24.57 Fresh Concrete Concrete remains in its fresh state N/mm 2 and 28 days strength as 53.14 N/mm ...

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Ahmed Ahmad University of East London - Academia

Jan 01, 2001  The 28-day compressive strengths of OPS concrete designed according to the ACI method for conventional concrete and methods mentioned in references [A. Short, W. Kinniburgh, Lightweight Concrete, third ed., Applied Science Publishers, London, 1978; M.S. Shetty, Concrete Technology, S. Chand, India, 1993] for lightweight aggregate concrete have ...

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(PDF) Introductory behavior of rubber concrete Ahmed ...

Also, the rubber concrete was lightweight concrete compared with the conventional cement concrete as its density ranged from 1.78 to 2.06 g/cm 3 depending on the amount of the aggregates.With a material such as concrete, which contains void spaces of various sizes and shapes in the matrix and microcracks at the transition zone between the ...

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Ahmed Adnan - Academia

Ahmed Adnan, Missouri University of Science and Technology, CIVIL Department, Graduate Student. ... (SP) and silica fume (SF) admixtures to yield a lightweight aggregate concrete, the effects of using different ratios of these admixtures on unit weight, compressive strength and flexural strength are studied individually and accumulatively ...

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Je M'Appele Ahmed - Academia

Je M'Appele Ahmed studies Civil Engineering, German, and High Strength and High Performance Concrete. ... Civil Engineering, German, High Strength and High Performance Concrete, Recycled aggregate concrete for structural use, and Self Compacting Concrete. edit. About: edit. Advisors: edit. Papers- ... Academia ©2021 ...

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Ahmed Maher The German University in Cairo - Academia

Ahmed Maher, The German University in Cairo, Civil Engineering Department, Faculty Member. Studies Civil Engineering, Concrete Technology, and Mix Design.

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Dr. Ahmed Ajel Ali Al Majtomi University ... - Academia

Design requirement of concrete (I.S.I) In water retaining structures a dense impermeable concrete is required therefore, proportion of fine and course aggregates to cement should be such as to give high quality concrete. Concrete mix weaker than M200 is not used. The minimum quantity of cement in the concrete

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Shamseldin abdo - rudn.academia

Influence of silica fume on the pervious concrete with different levels of recycled aggregates more by Shamseldin abdo and Ahmed Fawzy The world nowadays is trying to find alternative approaches to be used in manufacturing instead of consuming raw materials.

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Ehsan Ahmed - Academia

Ehsan Ahmed, Université de Sherbrooke (University of Sherbrooke), Département de Génie civil Department, Adjunct. Studies Structural Dynamics, Structural Engineering, and Earthquake Engineering.

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Farabi Bin Ahmed Ahsanullah University of ... - Academia

Farabi Bin Ahmed, Ahsanullah University of Science and Technology, B.Sc. in civil engg Department, Undergraduate. Studies Sustainable Materials in Construction, Concrete, and Reinforced Concrete Structures. I am graduated from Ahsanullah University

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Bahira Abdulsalam Canadore College - Academia

Apr 24, 2006  Self-compacting sand concrete (SCSC) is a special type of self-compacting concrete characterized by the use of aggregates with a maximum size less than 5 mm. SCSC can incorporate large amounts of fine recycled concrete materials, making it a sustainable and green environment constructional material.

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Mahboob Ahmed University of Sargodha - Academia

Petrographic analysis revealed that there is trivial possibility of Alkali Aggregate Reaction like ASR and ACR. The results of geological and engineering parameters recommend limestone of Samana Suk Formation as suitable aggregate for the base course, sub base coarse, asphalt and cement concrete.

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Ahmed M . D . Elshafei - Academia

The cube compressive strengths of the concretes used were 30, 50, 70 and 90 MPa, the bar diameters used were 16 and 18 mm and the concrete covers were 67, 66 and 42 mm. Based on the test results, a concept to assess the ultimate stress of normal-strength concrete (NSC) and HSC was developed.

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Ahmed Blash - Academia

by Ahmed Blash and Dr. T.V. S. Vara Lakshmi The atmosphere has been heavily affected by the emission of greenhouse gases, the most important of which is carbon dioxide. It releases about 1 ton of carbon dioxide into the atmosphere when producing 1 ton of Portland cement.

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Yee Loon Lee Universiti Tun Hussein Onn ... - Academia

6. Invited Speaker on quality concrete: procedures and mix design, CSM-UiTM (21-22 June 2006). 7. Invited Speaker for Advanced Concrete Technology Course (4 – 8 June 2007). 8. Invited Speaker for Indonesia International Cement and Concrete Forum IICCF2007 (20-21 November 2007). 9.

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Ahmed Maher The German University in Cairo - Academia

Ahmed Maher, The German University in Cairo, Civil Engineering Department, Faculty Member. Studies Civil Engineering, Concrete Technology, and Mix Design.

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Je M'Appele Ahmed - Academia

Je M'Appele Ahmed studies Civil Engineering, German, and High Strength and High Performance Concrete. ... Civil Engineering, German, High Strength and High Performance Concrete, Recycled aggregate concrete for structural use, and Self Compacting Concrete. edit. About: edit. Advisors: edit. Papers- ... Academia ©2021 ...

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Shamsad Ahmad King Fahd University of ... - Academia

The measurement of tortuosity requires determination of porosity and pore size of concrete. Eighteen different concrete mixes were prepared by varying the levels of the key mix parameters, namely water/cement ratio, cement content and coarse/fine aggregate ratio, and then tested to determine porosity, pore size, tortuosity, and permeability.

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Ahmed Nabil Menoufia University - Academia

Ahmed Nabil, Menoufia University, Civil Engineering Department, Faculty Member. Studies Civil Engineering. I am working as assistant professor at Civil Engineering Department, Menoufia University, Egypt. I am Interested in concrete structures and

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Bahir Dar University - Academia

Academia is a place to share and follow research. ... (CC) with recycled aggregate concrete (RAC). The output of this study will highly impact the growing construction industry and communities in Ethiopia thereby reducing waste, saving cost, conserving natural aggregates, building capacity, and setting quality standards. ... by Ahmed Endris ...

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Mohamed Khalafalla Florida AM University - Academia

A total of 24 concrete mixtures varying in VSI values were produced for the study. Different sizes of coarse aggregates materials were used during the mixing process, as well as different kinds of sands. A number of fresh and hardened properties tests were performed on the concrete mixtures to assess the performance of the mixes.

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(PDF) use of ceramic waste in concrete: a review

Journal of Academia ... ShakirAlaa A. and Mohammed Ali Ahmed ... and Low Density Polyethylene (LDPE) used for bags manufacture) as a fibers and fine aggregates (powder) in sand concrete

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Ahmed Omran - usherbrooke.academia

Ahmed Omran, Université de Sherbrooke (University of Sherbrooke), Département de Génie civil Department, Graduate Student. Studies Damage Mechanics, Nanostructured materials, and

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Ahmed SOLIMAN Professor (Assistant) Ph.D, P.Eng ...

Ahmed M Soliman. Concordia University Montreal ... Two-stage concrete (TSC), also known as pre-placed aggregate concrete, is characterized by its unique placement technique, whereby the coarse ...

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Nabil Alkofahi Jadara University - Academia

Test results have shown that limestone is superior to valley gravel and basalt aggregates. Moreover, lime additive (1.5-2% by weight of aggregate) is better than polyamine (0.75-1% by weight of AC). It was also revealed that aggregate type was the most significant variable affecting stripping.

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Sara Boudali - Academia

Moreover, mixtures incorporating recycled concrete aggregate and fine recycled concrete exhibited a better sulphate resistance behaviour than those with natural aggregates and natural pozzolana. In conclusion, the quality of the used recycled materials is a key factor in producing green and sustainable self-compacting concrete.

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Yee Loon Lee Universiti Tun Hussein Onn ... - Academia

6. Invited Speaker on quality concrete: procedures and mix design, CSM-UiTM (21-22 June 2006). 7. Invited Speaker for Advanced Concrete Technology Course (4 – 8 June 2007). 8. Invited Speaker for Indonesia International Cement and Concrete Forum IICCF2007 (20-21 November 2007). 9.

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Ahmed Ebid Future University ,Egypt. - Academia

Academia is a place to share and follow research. Future University ,Egypt., Structural Engineering, Faculty Member

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Experimental study on strength behaviour of recycled ...

Mar 10, 2013  The concrete specimen with. 100% recycled coarse aggregate at 28 days of curing has the lowest tensile strength, which was only 1.952 N/mm2. It is around 38.81% drop when compared to control. concrete specimen. There is a drop in tensile strength of 10.66%, 18.18%, 24.76% and 34.79% for the concrete.

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