era ethiopian road specifisbmion requirement for concrete aggregate

16 CALCULATIONS,D SPECIFICATIONS - era.gov.et

Chapter 16 Bridge Design Manual - 2002 Calculations, Drawings And Specifications Ethiopian Roads Authority Page 16-1 16 CALCULATIONS,DRAWINGS AND SPECIFICATIONS 16.1 FORMAT OF CALCULATIONS,DRAWINGS AND SPECIFICATIONS 16.1.1 GENERAL REQUIREMENTS All the design, drawings, specifications and calculations shall be in the English language. All characters and …

Evaluation of the Effect of Molasses on Performance of ...

tests were determined and evaluated according to Ethiopian Road Authority (ERA) and American Association of State Highway and Transportation Officials (AASHTO) specifications. Based on the result 6% molasses was the optimum molasses content used to modified 60/70 penetration grade bitumen and 10%,10% and 9% was the optimum

Formwork for Concrete | Basic Requirements of Formwork

Strength: The strength of material must be sufficient to strong the forces expected and this is the important for both the structural design and safety aspect. 2. Stiffness: the structural movement under load should be small and sure; these deformities and separations are the necessary part of the whole deviations in the formed concrete surface.

Determining the Physical Properties of Aggregate Products ...

Dec 16, 2019· 1 10 100. sieve size. MAX MIN SAMPLE. Figure 1: Sieve test value for coarse aggregate % = . 100.. (1) Discussions: In road construction while working with HMA Concrete is primarily used on the surface of pavements, there are several underlying …

Design Guide for Concrete Local Roads and Streets V1 NCDOT

The Design Guide and Standard Specifications for Concrete Streets and Roads, hereafter referred to as "the Guide," is based on Version 12 of the StreetPave software developed by the American Concrete Pavement Association and specifications representative …

Assessing the Impact of Aggregate Quality on Flexible ...

Figure 4-2Babu base course aggregate gradation with ERA gradation requirement Whereas the amount of aggregate particles (the fine aggregates of base course aggregate fulfills the requirements it needs necessarily) that able passing the sieve size 0.425mm is sufficient because meeting the grading requirement of the size. 3.1.1.1.

(PDF) CONSTRUCTION OF SUBGRADE, SUBBASE AND BASE LAYERS ...

Opening to traffic after sealing Crusher Run Macadam l Crushed aggregates from aggregate crushing plants to be used as such l Screening, separation of aggregates and remixing is avoided l Physical requirements of aggregates are same as that of WMM / WBM l Two gradations provided in MoRTH specifications and rural roads manual l Construction ...

STANDARD CONSTRUCTION SPECIFICATIONS FOR ASPHALT …

The asphalt required by these Specifications shall conform to the requirements of The Asphalt Institute for the type and grade shown below: Asphalt for Seal Coating CRS-2 or CRS-2P Article 2.3 Cover Aggregate A. General Cover aggregate shall consist of crushed gravel and shall be sound, durable, free

Estimated Pavement Project Contract ... - era.gov.et

Jul 06, 2021· Concrete 2. The Ethiopian Roads Authority now invites bidders to submit sealed bids for providing the necessary labor, material and equipment for construction works of the above road projects. 3. Interested bidders shall submit the following evidence: a. In the case of Ethiopian bidders, Certificate of Registration from Ministry of Construction

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era ethiopian road specification requirement for concrete aggregate Description : ERA,ethiopian road specification requirement for concrete >Get Price CONSTRUCTION OF A NEW AGGREGATE with Shamrock Materials, a ready-mix concrete producer in …

ERA Ethiopia 2011 LVR+Design+Manual+A+FDraft ERA v110610 ...

The Standard Technical Specifications form a separate volume in the ERA 2011 series and these capture most of the proposed interventions mentioned in this low volume road manual. The ERA Standard Technical Specifications includes information on the format of Bill Items for the Bill of Quantities, on item coverage and the method of payment.

Design Guide for Subgrades and Subbases

Oct 21, 2008· specifications (proposed as Section 2010 of the SUDAS Standard Specifications) for subgrades and subbases. Topics covered include the important characteristics of Iowa soils, the key parameters and field properties of optimum foundations, embankment construction, geotechnical treatments, drainage systems, and field testing tools, among others.

crushed aggregate ethiopia

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(PDF) Determining the Physical Properties of Aggregate ...

Concrete is one of the versatile and widely used buiding material in the world construction industry. Fine and coarse aggregates make about 70% by volume of concrete production.

The Major Causes of Flexible Pavement Deterioration and ...

Apr 09, 2019· Flexible pavement roads in Ethiopia often deteriorate in different ways, because of the harsh climatic conditions, lack of proper design and quality control, sudden increasing of traffic due to the construction of different industries, high loads and inadequate assessment for identifying causes of deteriorate before carrying out Maintenance and Rehabilitation.

Road Item Engineering Estimates | Construction In Ethiopia

May 08, 2015· Bill 7 – RIGID (CONCRETE) PAVEMENT "7101 SCOPE This Division covers the construction of a surface course of Portland cement concrete, with or without reinforcement, and includes, inter alia, the specifications for materials, the placing and compacting of concrete, applying the surface texture, and constructing the joints. [ERA 2002]"

Bridge Design Manual by ETHIOPIAN ROADS AUTHORITY - …

Mar 09, 2020· These Specifications shall govern over the Ethiopian Building Code Standard (at present EBCS Nos. 1,2,3,5,7 and 8, 1995). EBCS shall be used as a compliment to these Specifications. Required loads, dimensions and methods are summarized generally in Chapters 2, 3, and 6-11. The remaining chapters are generally concerned with recommended ...

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(PDF) THE FEDERAL DEMOCRATIC REPUBLIC OF ETHIOPIAN ROADS ...

THE FEDERAL DEMOCRATIC REPUBLIC OF ETHIOPIAN ROADS AUTHORITY 2013 ROUTE SELECTION MANUAL. Andenet Ashagrie. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 25 Full PDFs related to this paper. Read Paper.

FIELD SAMPLING AND TESTING MANUAL TESTING …

For equipment specification details consult the current AASHTO edition. REFERENCED DOCUMENTS . AASHTO T 2, Sampling of Aggregates . ND T 248 and AASHTO T 248, Reducing Samples of Aggregate to Testing Size . TERMINOLOGY . Maximum Size of Aggregate – the smallest sieve opening through which the entire amount of aggregate is required to pass.

(PDF) THE FEDERAL DEMOCRATIC REPUBLIC OF ETHIOPIAN ROADS ...

As the length of the road network is increasing, appropriate choice of methods to preserve this investment becomes increasingly important. In 2002, the Ethiopian Roads Authority (ERA) first brought out road design manuals to provide a standardized approach for the design, construction and maintenance of roads in the country.

LABORATORY MANUAL OF TEST PROCEDURES FEBRUARY 2021

800 Airport Road Salem, OR 97301 503/986-3000 LABORATORY MANUAL OF TEST PROCEDURES FEBRUARY 2021. ... specifications. This is not designed as a field manual but is intended to be used ... Organic Impurities in Fine Aggregate for Concrete Determining the Percent of Fractured Particles in Crushed Aggregate

Ethiopian Construction | Construction in ethiopia ...

Aggregates: In general aggregates shall comply with the requiems of latest Ethiopian standard for aggregates Water :- Mixing water shall be clean and free from harmful matter Reinforced concrete plain concrete Mild:-Completely protected against whether or aggressive condition Nominal max-size of Agree Nominal max size W/C 40 30 20 10 40 30 20 ...

Road Standards and Paving Standards - ASTM International

Road Standards and Paving Standards. ASTM's road and paving standards provide the specifications and test methods pertinent to the material, physical, mechanical, performance, and application requirements of road surfaces and pavements. These geotechnical surfaces are laid down on specified areas intended to sustain either or both foot and ...

Concrete Block Specification | Properties of Concrete block

Jul 16, 2016· A concrete block wall can be laid in less time and may cost up to half as much as a similar brick wall. The concrete blocks are generally made using concrete which is a mixture of powdered Portland cement, water, M-Sand, and gravel. Concrete blocks are used extensively for both load bearing and non- load bearing walls, externally and internally.

Specifications Of Basalt Aggregat | Crusher Mills, Cone ...

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aggregate crusher plant in ethiopia - bijbelforumnl. Feb 27, 2017· of Ethiopia, which is the employer of the EPC (engi- neering The rock mass conditions on the right abutment dis- couraged the Crushing plant yields used crusher libya agent – crusher business in tanzania feb 22,2017 used aggregate crusher plant for sale in stone quarry,bahrain,egypt,libya,ethiopia,crushing and screening ...

Standard Specifications for Highways and Structures 2013

106.13 contractor process quality control at asphalt and concrete plants 65 106.14 minimum requirements for testing laboratories at asphalt and concrete plants 69 107 legal relations & responsibility to public 70 107.01 restoration of surfaces opened by permit 70 107.02 federal participation (federal-aid projects) 70

Road and Transportation Engineering

A total of 48 questionnaires from Contractor, Consultant and Employer were collected. To supplement questionnaire a desk study of randomly selected 5 ongoing road projects that administered by ERA which have departure from standard issue from these projects 4 AC road projects are used to investigate the impact of departure from standard on VOC.

EVALUATION OF THE EFFECT OF RECYCLE WASTE PLASTIC …

aggregate coat and evaluates its effect on the mechanical properties of hot mix asphalt mixture with 9.5, 12.5 &19mm nominal maximum aggregate size. Therefore, in this investigation, cleaned, dried and grinded WPB (size ranges from 2.36 to

Tue Era Ethiopian Sand Crusher

Former Ethiopian President Colonel Mengistu Hailemariam has met with Ethiopia former Prime Minister Hailemariam Desalegn in Zimbabwe capital Harare on Wednesday. View Details Send Enquiry Official Ad Remover Blocks All Online Ads. Ad Remover installs right into your browser to block online ads.

road construction aggregates mining in ethiopia

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Bitumen-Bound Materials | ERA - Ethiopian Roads Authority

specifications tailored to the specific conditions and availability of materials of a specific project. 8.2 Components of a Mix The coarse aggregates for premixes should be produced by crushing sound, unweathered rock or natural gravel. The specifications for the aggregates are similar to those for granular base courses.

FEDERAL DEMOCRATIC REPUBLIC OF ETHIOPIAN ROADS …

13. Road Surface potholed 110 Spot Repair Selected Material (P59) 13. Road Surface potholed 111 Spot Repair Crushed Aggregate (P59) 14. Road Surface rutted or uneven, and does not drain to edge (Minor: <3cm) 220 Blade Gravel Road (light) (P63) 15. Road Surface rutted or uneven, and does not drain to edge (Major: >3cm) 221 Blade Gravel Road ...

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Determining the Physical Properties of Aggregate Products ...

Determining the Physical Properties of Aggregate Products and its Suitability for Road Base Construction, Ethiopia Ashebir Alyew Mamo1 1 Lecturer, Civil Engineering Department,