About Us

MINEVIK Machinery is a leading and pioneering enterprise with the most advanced international level in R&D, manufacturing and selling of large-scale crushing & screening plants and beneficiation plants.

large-scale crushing & screening plants and beneficiation plants.

All of our equipment have got ISO international quality system certification, European Union CE certification and Russian GOST certification.

  • In central China-Zhengzhou, covering 140 thousand square meters
  • Win-win cooperation and create more value to customers
  • Exported large quantities and high-end mobile crushing plant and milling equipments to Russia, Kazakhstan, Indonesia, Ecuador, South Africa, Nigeria, Turkey more than 100 countries .

Ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum

Our Products

AS a leading global manufacturer of crushing and milling equipment, we offer including quarry, aggregate, grinding production and complete stone crushing plant. We also supply individual crushers and mills as well as spare parts of them.

Services

Our goal is to guarantee the excellent operation equipment with high safety for our customers and minimize the downtime of the machine by predictive maintenance. Kefid service and original accessories can be 100% trusted at the time of maintenance.

SERVICE AND SUPPORT

Minevik service and original accessories can be 100% trusted at the time of maintenance.

ACCESSORIES CENTER

striving to enable customers to get the parts in the nearest place.

SALES MARKET

Our sales market is spread all over more than 100 countries and regions

aggregate use in concrete in iraq

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The influence of recycled concrete aggregate on the

The influence of recycled concrete aggregate on the properties of concrete Iraq, was used in this study. The fine aggregate grading was checked according to the I.Q.S (No. 45/1984) [21]Zone 2

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Aggregate Use In Concrete In Iraq Hansestadt Demmin

2016-01-220183;32;form 75-80 by volume of concrete. in iraq the most common aggregate naturally was sand and gravel. . the use of crushed limestone as fine aggregate in concrete effect properties of both fresh and hardened concretesuch as

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The combined effect of using recycled coarse aggregate and

Jul 27, 2019· The reuse of materials from destroyed structures as recycled aggregate for concrete has become an important issue, especially in Iraq’s Mosul City following the war of 2017. Many water types which are unacceptable for drinking, such as the well water available in Mosul, may be used in concrete, avoiding the need to use precious potable water.

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Lafarge Cement, concrete and aggregates

Lafarge, building better cities. World leader in building materials with top-ranking positions in Cement, Aggregates and Concrete.

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Study of Aggregates Used for Concrete 1n Kuwait

Study of Aggregates Used for Concrete 1n Kuwait ORAOA A, K ,\VVAJ.I ABSTRACT The research reported in this paper was necessitated by (a) the great volume of local and international building contracts in the Middle East and (b) the search for the reasons behind the phenomenon of exten­ sive concrete deterioration.

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Use of waste plastic in concrete mixture as aggregate

This study involved 86 experiments and 254 tests to determine the efficiency of reusing waste plastic in the production of concrete. Thirty kilograms of waste plastic of fabriform shapes was used as a partial replacement for sand by 0%, 10%, 15%, and 20% with 800 kg of concrete mixtures. All of the concrete mixtures were tested at room temperature.

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Aggregate in Concrete The Concrete Network

Important Aggregate Dos and Don'ts. DO use aggregate that's in compliance with ASTM C 33, "Standard Specifications for Concrete Aggregates." Aggregates must be sound, clean, hard, durable, and free of excessive fines or contaminates that can affect cement hydration or disrupt the paste-aggregate bond.

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Different materials used for Precast Concrete Buildings

Aggregates used in Precast Concrete Buildings. Water for Precast Concrete Buildings. Water should be free from matter which will reduce the strength and durability of the concrete. The use of recycled water may lead to a rise in the proportion of soluble salts and alkalis in the concrete. Testing should be carried out to ensure the limits are

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Aggregates Portland Cement Association

Crushed aggregate is produced by crushing quarry rock, boulders, cobbles, or large-size gravel. Recycled concrete is a viable source of aggregate and has been satisfactorily used in granular subbases, soil-cement, and in new concrete. After harvesting, aggregate is processed: crushed, screened, and washed to obtain proper cleanliness and gradation.

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Different Types & Sizes of Aggregate for Concrete

Aug 11, 2018· When the aggregate is sieved through 4.75mm sieve, the aggregate retained is called coarse aggregate. Gravel, cobble and boulders come under this category. The maximum size aggregate used may be dependent upon some conditions. In general, 40mm size aggregate used for normal strengths and 20mm size is used for high strength concrete.

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Exposed Aggregate Concrete | Lafarge Cement, concrete

Aggregates are natural occurring materials and thus variation in color and size are inevitable. Limitations: Concrete is a composite material and even though every care is taken to keep the material as homogeneous as possible, the colour of different loads may show marginal variations. Artevia™ Exposed should not be used

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USING DIFFERENT TYPES OF FINE AGGREGATE TO PRODUCE

frequently used in concrete. In this paper, two aspects of the effect of fine aggregate on HSCs In Iraq, many aggregate quarries produce natural sand from different mineralogical sources.

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Use Of Recycled Aggregate In Concrete IJERT Journal

Use of recycled aggregate in concrete can be useful for environmental protection. Recycled aggregates are the materials for the future. The application of recycled aggregate has been started in a large number of construction projects of many European, American, Russian and Asian countries. Many countries are giving

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Aggregate in Concrete The Concrete Network

Important Aggregate Dos and Don'ts. DO use aggregate that's in compliance with ASTM C 33, "Standard Specifications for Concrete Aggregates." Aggregates must be sound, clean, hard, durable, and free of excessive fines or contaminates that can affect cement hydration or disrupt the paste-aggregate bond.

More
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Different Types & Sizes of Aggregate for Concrete

Aug 11, 2018· When the aggregate is sieved through 4.75mm sieve, the aggregate retained is called coarse aggregate. Gravel, cobble and boulders come under this category. The maximum size aggregate used may be dependent upon some conditions. In general, 40mm size aggregate used for normal strengths and 20mm size is used for high strength concrete.

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Understanding the Role of Aggregates in Concrete Bay

A coarse aggregate is also identified as any aggregate retained in a #4 sieve. Fine aggregates are any material less than 4.75 mm that can pass through a #4 sieve and is retained on a #200 sieve. Why do we use aggregates in concrete? There are many reasons. Perhaps the biggest reason in cost. Using aggregate as a filler can help concrete

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Different materials used for Precast Concrete Buildings

Aggregates used in Precast Concrete Buildings. Water for Precast Concrete Buildings. Water should be free from matter which will reduce the strength and durability of the concrete. The use of recycled water may lead to a rise in the proportion of soluble salts and alkalis in the concrete. Testing should be carried out to ensure the limits are

More
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Different Types of Aggregate Types of Concrete Each Should

Concrete base made using sand, cement, water and aggregate. When it comes to producing the correct concrete mix for the particular job you are doing (more can be found on mixing cement in our project here), this is very much down to the type of aggregate that is used in the mix and the quantities of aggregate, cement and water that’s used.Aside from the amount of aggregate used in a concrete

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WHAT ARE THE PROPERTIES OF AGGREGATES FOR CONCRETE

Oct 01, 2016· For the preparation of economical concrete mix on should use largest coarse aggregates feasible for the structure. IS-456 suggests following recommendation to decide the maximum size of coarse aggregate to be used in P.C.C & R.C.C mix. Maximum size of aggregate should be less than. One-fourth of the minimum dimension of the concrete member.

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What size aggregate should be used to make the concrete

Answer: Not sure Explanation: Many factors dictate aggregate size, including method of placement, regional availability of materials, admixtures etc. In order to minimize cracking, it is ideal to use a mix design containing aggregates ranging from natural sand, to 1

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Uses of Aggregates CEMEX USA CEMEX

Concrete aggregates are composed of geological materials such as gravel, sand and crushed rock. The size of the particles determines whether it is a coarse aggregate (e.g. gravel) or a fine aggregate (e.g. sand). The resulting concrete can be used in its natural state or crushed, according to its use

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Effect of Aggregate Content on the Concrete Compressive

The specimens used in the study were made of concrete with varied aggregate contents from 1000 to 1400 kg/m 3 . The specimens were made and tested at the Hawler Construction Laboratories (HCLabs) in Erbil, Kurdistan Region of Iraq. The UPV measurement and compressive strength tests were carried out at the concrete age of 28 days.

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Resistance of Recycled Aggregate Concrete (RAC) Subjected

Recycled aggregates were widely used in the concrete industry as a replacement of natural aggregates in the last two decades. In this study, the resistance of concrete mixtures having various levels of recycled aggregate as a replacement of natural coarse aggregate to the attack of magnesium and sodium sulfates was investigated. Five mixtures made with 0%, 25%, 50%,

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Lafarge Aggregates & Concrete Iraq Home | Facebook

Lafarge Aggregates & Concrete Iraq. 174 likes. [email protected]

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Aggregates in Concrete Applications | Blend Plants Africa

Aggregates used in building and construction are mineral-based materials needed for mixing with cement, bitumen, lime, gypsum or other adhesive to form concrete or mortar. Each aggregate added to a mix contributes volume, stability, resistance to wear or erosion, or other desired physical properties to the finished product.

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Effect of Aggregate Content on the Concrete Compressive

The specimens used in the study were made of concrete with varied aggregate contents from 1000 to 1400 kg/m 3 . The specimens were made and tested at the Hawler Construction Laboratories (HCLabs) in Erbil, Kurdistan Region of Iraq. The UPV measurement and compressive strength tests were carried out at the concrete age of 28 days.

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Aggregates for Concrete

an aggregate for use in concrete on a particular job or in meeting a particular specification should be based upon specific information obtained from tests used to measure the aggregate’s quality or, more importantly, its service record, or both. More performance tests are also used to test aggregates in

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How to Choose Quality Coarse Aggregate for Concrete

In the majority of concrete works, aggregate sizes of 20 mm or smaller are used. To ensure good coarse aggregate compaction and higher concrete density, it is recommended to mix 20 mm and 10 mm coarse aggregates in the ratio of 70:30 or 60:40. It is recommended to stack different aggregate sizes to use them efficiently.

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Use of Optimized Aggregate Gradation for Concrete

Dec 12, 2015· country has given rise to the use of manufactured fine aggregate in its place. However, this material has been thought to cause adverse effects on concrete performance, resulting in standard specifications limiting its use and the buildup of dust- -of-fracture mineral filler in aggregate quarries.

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Recycled Concrete Aggregates: Its Properties & Uses

Recycled concrete aggregate as such, holds original aggregate with hydrated cement paste. Hence first, that demolished concrete is cleaned from dirt and other loose particles. After that, it is broken into smaller pieces to produce aggregate known as recycled concrete aggregate. Recycled concrete aggregates are available in size of 20mm to 50mm.

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Understanding the Role of Aggregates in Concrete Bay

A coarse aggregate is also identified as any aggregate retained in a #4 sieve. Fine aggregates are any material less than 4.75 mm that can pass through a #4 sieve and is retained on a #200 sieve. Why do we use aggregates in concrete? There are many reasons. Perhaps the biggest reason in cost. Using aggregate as a filler can help concrete

More
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Coarse Aggregates: Types, Properites & Applications

Coarse aggregates are obtained from stone quarries and stone crushers, the size between 4.75 mm to 80 mm. Good qualities of an ideal aggregate: A correct aggregate used for the construction of concrete and mortar must meet the following requirements. This should include natural stones, gravel and sand or various mixtures of those materials.

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Different Types of Aggregate Types of Concrete Each Should

Concrete base made using sand, cement, water and aggregate. When it comes to producing the correct concrete mix for the particular job you are doing (more can be found on mixing cement in our project here), this is very much down to the type of aggregate that is used in the mix and the quantities of aggregate, cement and water that’s used.Aside from the amount of aggregate used in a concrete

More
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How To Calculate Cement, Sand & Aggregates Quantity in

Aug 03, 2018· CALCULATION FOR AGGREGATE QUANTITY; Consider volume of concrete = 1m 3 . Dry Volume of Concrete = 1 x 1.54 = 1.54 m 3. Aggregate = (3/5.5) x 1.54 = 0.84 m 3 ∴ 3 is a part of cement, 5.5 is sum of ratio. Density of Aggregate is 1500/m 3 Calculation for KG = 0.84 x 1500 = 1260 kg. As we know that 1 m3 = 35.31 CFT

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7 Lab Tests on Aggregates to Make Better Concrete for

In this article we explore the importance of aggregate testing, various tests on aggregates and all the important properties of aggregates. Aggregate is one of the primary building materials and constituent of concrete. Aggregates are used in construction and include sand, gravel, crushed stone, slag, recycled concrete

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Synthetic aggregate for use in concrete King Saud University

We claim: 1. A synthetic aggregate for use in concrete, consisting of a shredded composite material containing between 30% and 50% shredded Linear Low-Density Polyethylene (LLDPE) by weight, the balance being a filler selected from the group consisting of red sand, fly ash, and quarry fines, the filler being embedded in a matrix of the recycled plastic, wherein the composite has a maximum

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What is the role of aggregates in concrete? Quora

Aggregates are the major component of any concrete it constitutes about 70–80% of the volume of concrete Following are the reasons why aggregates are used in concrete 1) They are easily available and they are economical as compared to cement 2) Ag...

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GRADATION OF AGGREGATE FOR CONCRETE BLOCK

GRADATION OF AGGREGATE FOR CONCRETE BLOCK . Although numerous papers have been written concerning the proper gradation for concrete mixes, they have generally dealt with plastic mixes, and very little published information is available on the subject dealing specifically with the “minus zero slump” mix as used in concrete block production.

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