Duqm Port - Road Works and Infrastructure, Oman

The scope of road works included all earthworks, trimming, preparation of surfaces, ground improvements (incl. provision of geotextile membranes), laying of pavement structure (comprising granular sub-base, aggregate road base, bitumin. base course, bitumin. wearing course), kerbing, safety barrier and traffic control (markings, signs), according to Omani standards.


granular base within the pavement structure. Granular S: means a set of requirements for dense graded aggregates intended only for use as surface dressing of low volume unpaved roads with an AADT less than 200. Nickel Slag: means the non-metallic co-product resulting from the production of nickel.

About » Al Salami & Al Kashry Group

Today the Al Salami & Al Kashry Group produces & supplies all kinds of Sand, Aggregate, Sub Base Materials, Crushed Aggregate Base Course Materials, Filling Materials, Concrete Blocks, Interlocking Pavers & Hydraulically Pressed Kerbstones for the Civil & Road Construction in & around Sohar, Al Batinah Region, Oman.

Subbase (pavement) - Wikipedia

In highway engineering, subbase is the layer of aggregate material laid on the subgrade, on which the base course layer is located. It may be omitted when there will be only foot traffic on the pavement, but it is necessary for surfaces used by vehicles. Subbase is …

Chapter Three - Granular Base and Subbase Construction ...

Mechanistically, this configuration provides a stronger reaction platform than unbound subgrades or sub- bases, allowing increased granular base compaction during construction, and it also has the potential to take advantage of the compressive stresses induced in the granular aggregate base owing to the presence of the stiff underlying layer.

:::CTC:::Continental Trading Company (CTC) was established ...

Continental Trading Company (CTC) was established in 1999 as a closely held business of Mr.Abdullah Saif Al Mesalam.CTC is a subsidiary of Aero Group, one of the leading providers of Shipping & Logistic Services in Qatar. The company has been reorganized in …

Al Husn Village Roadworks, Oman | Al Tasnim Enterprises

Pavement was consist of Granular Sub Base(GSB)-200mm, Aggregate Base Course(ABC)-150mm, Bituminous Base Course-60mm & Bituminous Wearing Course(BWC)-40mm. The Cut sections of the Rocks were stabilized using Short crete,Rock Anchors, Wire Mesh system.

Standard Specification for Materials for Soil-Aggregate ...

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.. ASTM Standards. C117 Test Method for Materials Finer than 75-m (No. 200) Sieve in Mineral Aggregates by Washing. C131 Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los …

401. GRANULAR SUB BASE 401. 1. Scope 401.2.1.

granular sub-base extended over the full formation as shown in the drawing shall be considered incidental to the work of providing granular sub-base and as such no extra payment shall be made for the same. 401.8 . Rate The Contract unit rate for granular sub-base shall be payment in full for carrying out the required operations


It is requested to please call us for the work mentioned below – 1. Earthwork a) Excavation b) Embankments c) Sub grate Preparation d) Backfilling e) Disposal of mass excavated Material 2. Granular & Stabilized a) Granular sub-base b) Aggregate base course c) Cement stabilized sub grade d) Bitumen stabilized sand

What is the property of GSB in road construction? - Quora

Oct 18, 2017· GSB - Granular Sub Base is the layer in road foundation just above the compacted soil layer (the compacted soil layer is called subgrade). Many times when the road passes through an area whre there are changes of water trying to cross the road thr...


.2 Sub-base – where required, the layer of material provided between the sub-grade and the base course. .3 Base course – the layer of base course material, greater than 50mm in depth, immediately underlying the pavement wearing surface. .4 Leveling course – a non-structural layer of base course material, up to 50mm in depth, placed

§302 Section 300 BASES AND SUBBASES - New York State ...

Section 300 BASES AND SUBBASES SECTION 301 (VACANT) SECTION 302 - BITUMINOUS STABILIZED COURSE 302-1 DESCRIPTION. This work shall consist of furnishing and placing a course of bituminous stabilized granular material and stabilized reclaimed asphalt pavement shoulder in conformance with this specification, the payment lines, and typical sections ...

Civil Engineering: GRANULAR MATERIAL FOR SUB BASE | Road …

Jul 18, 2019· A. Granular material for use in sub-base courses shall be a naturally occurring gravel, blended as necessary with fine or coarse material and screened to produce the specified gradation. Crushing of natural granular material shall not normally be required, unless for meeting the grading requirements, producing a higher quality sub-base with improved mechanical stability or when shown …

Types of Base Course | Granular Base Course, Macadam Base ...

Types of Base Course - Granular, Base, Macadam, Water Bound. By: Haseeb Jamal / On: May 31, 2017 / Types of, Shallow, Roads . Granular Base Course: A mixture of soil particles ranging in size from coarse to fine. Processing involve crushing oversized particles and screening where it is necessary to secure the desired grading.


(Consultant) MATERIALS FOR SUB BASE AND BASE COURSE 3.01 - Page 4 of 19 3.01.03 GRANULAR MATERIAL FOR SUB-BASE A. Granular material for use in sub-base courses shall be a naturally occurring gravel, blended as necessary with fine or coarse material and screened to produce the specified gradation.

Mohamed Farouk - Project Manager - OMAN GULF COMPANY …

Mohamed Farouk Project Manager at OMAN GULF COMPANY L.L.C ... - All required Earthwork, future and existing ducts, slope protection, sub grade, granular sub base and Aggregate Base Course, Rigid Pavement, Bituminous pavement, Safety barriers, delineators, signboards, Gabions, road marking and protection of all existing utilities, pipe and box ...

TB011P - Minnesota Department of Transportation

engineers call this a base course since that term is used to designate the first layer beneath an asphalt surface. ... Subbases may be constructed of granular materials, cement-treated materials, lean concrete, or open-graded, ... without subgrade compaction control and without sub- bases. These old pavements were still in excellent

Duqm Quarries - Trifoil Ad

Duqm Quarries is a Construction Business . About Duqm Quarries. We are a closed joint stock company (SAOC) with majority representation from Oman Company for Development of Special Economic Zone at Duqm (TATWEER) which is wholly owned by the Authority for Special Economic Zone at Duqm (SEZAD).

What materials are used for road construction? - Quora

Jan 25, 2017· Road consist of basically 4 layers: 1. Sub-grade: The sub-grade material should be clean and free from organic matter and should be able to be compacted by roller, to form stable sub-base. The material should have the following characteristics: * ...

Duqm - Trifoil Ad

Duqm Quarries Company SAOC was established in August 2017 under the Special Economic Zone Authority with representatives from Oman Development Company (Tatweer) and other local companies in Oman. Follow us on


Surface preparation shall be performed on all existing unpaved surfaces prior to placing granular base course thereon. The surface shall be prepared at least one but not more than three kilometres in advance of placing granular base course. Material that is blade mixed and watered

T01-15 Pavement Structure Design Guidelines

For two-product crushed base course structures, the lower layer is usually more free-draining and coarser (with a max nominal size of 50mm or 75mm). 3.4.2 Select Granular Sub-Base (SGSB) Select Granular Sub-Base (SGSB) material typically consists of a 75mm-minus sand and/or gravel mixture that is either processed (screened and/or crushed) or

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