Have questions? TRAK sales representatives are available for live chat now WELCOME TO TRAK MACHINERY!

good aggregate for concrete

  • The Suitability Of Limestone Aggregates For Use In ...

    The Suitability Of Limestone Aggregates For Use In Structural Concrete. ... Limestone sand meeting standard grading specifications for concrete can be effectively and economically used to produce good quality concrete with concrete properties comparable to …

  • Aggregates, Concrete & Asphalt Q&A - Aggregate Research

    Aggregates, Concrete & Asphalt Q&A - Ask your aggregate, concrete or asphalt questions for free. Get answers from peers in the industry. Aggregates, Concrete & Asphalt Q&A - Ask your aggregate, concrete or asphalt questions for free. Get answers from peers in the industry.

  • Carbonate Aggregate in Concrete

    Carbonate Aggregate in Concrete . May 2015 6. 7. Author(s) 8. Performing Organization Report No. ... Although ensuring good concrete performance, these criteria, or specified limitations, may reject potentially acceptable aggregates. The specific objectives of this study are as follows:

  • Why is a coarse aggregate mixed with concrete? - Quora

    Why is a coarse aggregate necessary for a good quality of concrete? Primarilly because it results in less cement paste. That has the following effects. Greatly reduced cost (cement is expensive) Greatly reduced drying shrinkage. Good quality coarse aggregate has relatively little moisture movement, and a good elastic modulus.

  • AGGREGATE TOUGHNESS/ ABRASION RESISTANCE AND …

    toughness/abrasion resistance and durability/soundness tests for characterizing aggregate used in asphalt concrete and to determine those test methods that best correlate with field performance. Based on a review of literature and specifications, laboratory tests for characterizing aggregate toughness/abrasion resistance and durability ...

  • Pouring and Finishing an Exposed Aggregate Walkway ...

    Exposed aggregate can be a good choice, especially if you are matching existing concrete or making a purposeful contrast to another finished surface. Aggregate is the sand and gravel part of the concrete …

  • Is Exposed Aggregate Concrete More Durable?| Concrete ...

    Q: At a regional shopping center in northern Illinois we noticed some good exposed-aggregate sidewalks which have been in place a number of years. Then we saw that a lot of the bands of plain concrete separating the exposed aggregate surfaces were in relatively poor condition.

  • What are aggregates? What are the basic properties of the ...

    Aggregate is a granular material, such as sand, gravel, crushed stone used with a cement to produce either concrete or mortar. Aggregate is relatively inexpensive and does not enter into complex chemical reactions with water; it has been customary, therefore, to treat it as inert filler in concrete and mortar.

  • What is a Concrete Aggregate? (with pictures) - wisegeek.com

    Mar 07, 2019· Concrete aggregate is a material which is mixed with cement to create concrete which is hard, strong, and long-lasting. There are a number of different types of concrete aggregate, with contractors selecting their aggregate on the basis of the type of job being performed.

  • Aggregate in Concrete - The Concrete Network

    Recycled concrete will have a higher absorption and lower specific gravity than conventional aggregates. To produce good quality, durable concrete containing a portion of recycled concrete aggregate often requires trial concrete mixes and close monitoring of the properties of the old recycled concrete, with mix adjustments made, as needed.

  • Construction aggregate - Wikipedia

    Construction aggregate, or simply "aggregate", is a broad category of coarse to medium grained particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates. Aggregates are the most mined materials in the world.

  • How to Mix Exposed Aggregate Concrete | Hunker

    Recycled concrete, or crushed waste concrete, is a feasible source of aggregates and an economic reality, especially where good aggregates are scarce. Conven-tional stone crushing equipment can be used, and new equipment has been developed to reduce noise and dust. Aggregates must conform to certain standards for

  • Aggregates for Concrete - GreenSpec - Green Building ...

    • Aggregates in any particular mix of concrete are selected for their durability, strength, workability and ability to receive finishes. • For a good concrete mix, aggregates need to be clean, hard, strong particles free of absorbed chemicals or coatings of clay and other fine materials that could cause the deterioration of concrete.

  • Recycled Aggregates - cement.org

    The ready mixed concrete supplier treated the RCA like lightweight aggregates and was able to produce concrete in a single-stage mixing process. Contractors placing the RCA concrete said the workability was similar to that of the aggregate concrete and the placement had good finishability. Within four days, the placement was in full service.

  • The Effect of Aggregate Properties on Concrete

    The Effect of Aggregate Properties on Concrete Concrete is a mixture of cementious material, aggregate, and water. Aggregate is commonly considered inert filler, which accounts for 60 to 80 percent of the volume and 70 to 85 percent of the weight of concrete.

  • 3 Aggregate Properties - in.gov

    concrete. Some aggregates may initially have good surface texture, but may polish smooth later under traffic. These aggregates are unacceptable for final wearing surfaces. Limestone usually falls into this category. Dolomite does not, in general, when the magnesium content exceeds a minimum quantity of the material. STRENGTH AND ELASTICITY

  • Aggregates - cement.org

    Aggregates are inert granular materials such as sand, gravel, or crushed stone that, along with water and portland cement, are an essential ingredient in concrete. For a good concrete mix, aggregates need to be clean, hard, strong particles free of absorbed chemicals or coatings of clay and other fine materials that could cause the ...

  • How to Pour Exposed Aggregate Concrete (with Pictures ...

    May 31, 2017· This article is helpful to anybody who wants to pour exposed aggregate concrete at home or for commercial use. It will explain the proper procedure and list all the necessary materials.

  • Best Types of Aggregates for Concrete | Construction

    Gravel, also called graded stone, is another coarse aggregate suitable for concrete mixes. Sand is the finest aggregate. It comes in different gradations: sharp sand, builder’s sand, and kiln-dried silver sand, which vary from coarsest to finest, respectively. Finer sands are a good aggregate …

  • Exposed Aggregate Concrete Design Ideas | DoItYourself.com

    Exposed Aggregate Concrete Design Ideas In the method of exposed aggregate concrete, the contractor adds a mix of gravel, glass chips, or other crushed material to wet concrete, and then reveals this material through a special surface treatment. Landscape designers have used this technique for the better part of a century, and for good reason ...

  • Getting Good Concrete| Concrete Construction Magazine ...

    Good concrete depends on good aggregate. Coarse aggregate can be as much as 75% of the volume in a mix. The best stone for making concrete is hard, durable particles with moderate absorption. The worst aggregate used to make concrete is friable, weakly cemented sandstones with high absorption.

  • What are the Good Properties of Aggregate for Concrete Making?

    A good aggregate will be hard, dense, strong, and free of porous material. The abrasion resistance of aggregate can be tested by the Los Angeles abrasion test; however, this test does not match well with concrete wear in the field.

  • How to Decide the maximum size of Coarse aggregate for ...

    Dec 02, 2017· In this video you will learn how to decide the maximum size of aggregate for concrete work. The maximum size of aggregate for concrete in residential building is …

  • HOW COARSE AGGREGATES AFFECT MIX DESIGN?

    HOW COARSE AGGREGATES AFFECT MIX DESIGN? ... It is advantageous to use greater maximum size of coarse aggregate for concrete grades up to M 35 where mortar failure is predominant. Lower water/cement ratio will mean higher strength of mortar (which is the weakest link) and will result in higher strength of concrete. ...

  • Exposed Aggregate Concrete, Exposed Aggregate Decorative ...

    Exposed Aggregate Concrete contractor specialists, Potoroka Concrete of Macomb, Oakland and Washington Twp.. MI we are Legendary in exposed aggregate concrete finishes with 1000's of jobs installed over the past 2 decades. Patios, driveways, pool decks and more (586)649-7170.

  • Lightweight concrete

    Good thermal insulation properties make foamed concrete also suitable for sub-screeds and filling under-floor voids. Lightweight structural concrete. Lightweight aggregate concretes can be used for structural applications, with strengths equivalent to normal weight concrete. The benefits of using lightweight aggregate concrete include:

  • Exposed Aggregate - Pictures of Concrete Aggregates - The ...

    An exposed-aggregate surface is obtained by placing concrete and then removing the outer 'skin' of cement paste to uncover decorative coarse aggregate (either batched into the concrete mix or seeded onto the surface).

  • How to Pour Exposed Aggregate Concrete

    How to Pour Exposed Aggregate Concrete. ... exposed aggregate concrete looks so good when it is done right. At the same time, you need to know how to do it or else it can look really bad. One of my favorite looks that you talked about is using seashells in the concrete. Reply.