our Crusher

HPT Series HST Series
HGT Series
CI5X Series PFW Series
PEW Series PE Series
VSI6X Series B-DR Series

Mobile Crushers

MS Steel Platform

MS series steel platform guided by global high standard design idea, adopts the standard modular design concept, with fast delivery cycle, convenient transportation and installation

K3 Series Portable Crushing Plant

K3 series Portable Crushing Plant. It uses modular vehicle design, able to be transported without disassembly. Besides, it boasts rapid installation and production

K Series Portable Crusher Plant

K Series Portable Crusher Plant, also known as K Series Portable Crusher, is a new type of equipment developed on the basis of years of independent research and development

LD Series Mobile Crusher

LD Series Mobile Crushing Plant, is developed on the basis of years of experience in R&D and production of mobile crushing plants. It absorbs advanced foreign mobile crushing technology.

Grinding Mills

MRN Pendulum Roller Grinding Mill

MRN Pendulum Roller Grinding Mill represents the advanced grinding processing technology at present, and its application of patent technology

MTW Trapezium Grinding Mill

MTW Trapezium Grinding Mill is developed by our company's experts based on 10 years' R&D on grinding machines.

MTM Medium-Speed Grinding Mill

MTM Medium-speed Grinding Mill is designed by our own engineers and technical workers based on many years' research of grinding machines.

LM Vertical Grinding Mill

The LM Vertical Grinding Mill, launched by ZENITH, integrates five functions of crushing, grinding, powder selection,

LUM Ultrafine Vertical Grinding Mill

vertical grinding mills and the latest technology from Taiwan &Germany, ZENTITH pushed out the LUM Ultrafine Vertical Grinding Mill

XZM Ultrafine Grinding Mill

XZM Ultrafine Grinding Mill is widely used for superfine powder production. The output size can reach 2500mesh (5um).

Era Ethiopian Road Specification Requirement For Concrete Aggregate

Road Construction Aggregates Mining In Ethiopia

road constuction aggregates mining in ethopia road construction aggregates mining in ethiopia era ethiopian road specification requirement for concrete Get Price rockology 101 road construction home rogers group in crushed stone aggregates gravel asphalt paving road construction quarries for 100 years serving central midwest and Driving Surface Aggregate (DSA) is a well-graded unbound mixture of aggregate designed for use as a wearing course on unpaved roads DSA is designed to achieve maximum density to resist erosion and traffic wear Properly installed DSA roads will have greatly reduced sediment loss

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Jun 20 2015WBM Road Construction Procedure Construction of water bound macadam road involves the following 6 basic steps as given below Preparation of sub-grade Preparation of sub-base Preparation of base Preparation of wearing course Preparation of shoulders Opening to traffic Step – 1 (Construction of Sub-grade) Sub-grade act as a cushion for other layers i e field and/or laboratory Concrete mix designs with these aggregates require a pozzolan if the alkalinity of the cement exceeds 0 4 % as required by Section 1024-1(A) of the NCDOT Standard Specifications for Roads and Structures The specification states that "cement with a higher alkali content not to

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Design of Concrete Pavement for City Streets

7 Construction specifications Sub!wades and Subbases Unlike o~er paving materials the structural strength of a concrete pavement is largely within the concrete itself due to its rigid nature Because of the remarkable beam strength of concrete heavy loads are distributed over large areas resulting in very low pressures on the subgrade This Specification has particular reference to the prevailing conditions in Ethiopia and reflects ERA's experience gained through activities within the road sector during the last 50 years The specification set out in this Document shall be adhered to unless otherwise directed by the concerned bodies with in ERA

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Era Ethiopian Road Specification Requirement For Concrete Aggregate

Fly Ash and Recycled Coarse Aggregate in Concrete New

Fly Ash and Recycled Coarse Aggregate in Concrete New Era for Construction Industries - A Literature Review Prof Chetna M Vyas 1 Prof Jayeshkumar Pitroda 2

Volume 1 Specification for Highway Works MCHW

Volume 1 Manual of Contract Documents for Highways Works Manual of Contract Documents for Highway Works Volume 1 - Specification for Highway Works

Subbase (pavement)

The quality of subbase is very important for the useful life of the road and can outlive the life of the surface which can be scrapped off and after checking that the subbase is still in good condition a new layer can be applied Unbound granular materials are usually crushed stone crushed slag or concrete

Concrete Paving

Concrete Paving 11/15/11 Table of Contents Chapter One – Portland Cement Concrete Pavement the design and specifications requirements and how to check for compliance aggregates A pozzolan material such as fly ash may be added to the concrete mix as a partial substitute for cement The curing of the concrete is

Era Ethiopian Road Specification Requirement For Concrete Aggregate

  1. aggregate screens

    Aggregate Screens - Power Equipment Company Screens Screening is the separation of aggregate materials into different sized products Material is separated by passing through a vibrating screen box which has a number of different sized screens or meshes which the material falls through like a sieve

  2. Concrete Mix Design Guide

    aggregate and fine aggregate Regardless either approach will result in a relatively close mix proportion to be used for batching and further refinement by testing and


    ASPHALT CONCRETE SPECIFICATIONS Revised 03/15/2011 Bids and Contracts Asphalt Concrete Specifications 6 of 10 Concrete Concrete material shall comply with the following as a minimum requirement Portland Cement ASTM C150 type I or II low alkali Aggregate – General Comply with ASTM C30 uniformly graded and clean

Turnkey Project -- EPC Scheme


AGGREGATES FOR SURFACE TREATMENTS 302 1 Description Furnish aggregate for surface treatments in conformance to the type grade and surface aggregate classification (SAC) shown on the plans 302 2 Materials Furnish uncontaminated materials of uniform quality throughout that meet the requirements of the plans and specifications

Class C Mixtures as Alternates to Portland

Class C Mixtures as Alternates to Portland-cement-based Foundation Concrete William S Caires C E T 1 Stan Peters (on the road and at the project) Often too much concrete is on-site without aggregates required additional mixing effort utilizing a drill-powered mixing-

Era Ethiopian Road Specification Requirement For Concrete Aggregate

Pipe Bedding and Backfill

specifications paragraphs and drawings for pipe installation The discussions in this manual on bedding embedment and backfill requirements reflect these revisions and pertain only to specifications issued after the sunner of 1991 However many of the concepts presented are also applicable for prior specifications

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How to Make Concrete Blocks

The concrete blocks also known as cement brick or hollow cement brick or cement stock brick This article will explain how to make concrete blocks and how to start a home business of concrete

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Geogrid Reinforcement for Asphalt Road Maintenance by

Improving durability reducing maintenance requirements and extending service life Lower Construction and Life Cycle Costs The Spectra System paves the way to lower pavement construction costs by optimizing pavement components Research indicates that use of the system can reduce asphalt layer thickness 15-30% and aggregate layer thickness 25

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List of British Standards (BS) Code of Practice (CP) and American Society for Testing and Materials (ASTM) 3 of 12 BS 873 Part 7 1984 Specification for posts and fittings BS 882 1983 Specification for aggregates from natural sources for concrete BS 890 1972 Specification for building limes BS 903 Physical testing of rubber

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Properties of Concrete as Influenced by Shape and Texture

PDF | Shape and texture of aggregate is one of the major parameter that influence the properties of fresh and ardened state of concrete The present methods on mix proportioning of normal concrete

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Main Portal for The Road Authority Ontario Provincial Standards Specifications (Vol 1 2 5 6 7 8) Material Requirements (Vol 2 6 8) Division 10 - Aggregates OPSS PROV 1010 - Aggregates - Base Subbase Select Subgrade and Backfill Material

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List of Building Materials Required for Construction

A list of building materials is required before you start your construction project whether it is home industrial or for commercial purpose The basic construction materials list includes cement steel sand ready-mix concrete binding wires coarse aggregates fine aggregates bricks blocks etc

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May 08 2015This page is dedicated to providing customers with reliable information for your Ethiopian construction material need It is possible to say "current construction material price" in the midst of such an unstable price fluctuated market

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Best Practice Manual for Thin Bituminous Surfacings 2013

This Best Practice Manual for Thin Bituminous Surfacings forms part of the Ethiopian Roads Authority series of Road and Bridge Design documents Companion documents and manuals include the Standard Technical Specifications Standard Detailed Drawings and Standard Bidding Documents The complete series of documents covering all roads and

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