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Effect of Aggregate-Cement Ratio on Engineering Properties of Pervious Concrete

Test Methods Following tests were performed on the pervious concrete in this study- (i) Water permeability test Permeability is the property of a structure that is an indication of the passage of water through it. There are two methods by which we can measure the

Shotcrete

Shotcrete is an all-inclusive term for spraying concrete or mortar with either a dry or wet mix process. However, shotcrete may also sometimes be used (incorrectly) to distinguish wet-mix from the dry-mix method. The term shotcrete was first defined by the American Railway Engineers Association (AREA) in the early 1930s.

Batching, Mixing, Transporting, and Handling Concrete, Chapter 10

Batching, Mixing, Transporting, and Handling Concrete percentages of accuracy: cementitious material ±1%, aggregates ± 2%, water ±1%, and admixtures ± 3%. Equipment should be capable of measuring quanti-ties within these tolerances for the smallest

The Importance of Concrete Recycling

Dec 29, 2017 · Construction and demolition (C&D) waste is a central component of the solid waste stream, amounting to roughly 25 percent of total solid waste nationally. The largest part of C&D material is concrete, which encompasses around 70 percent of C&D generated material before recycling, according to the U.S. EPA. Construction (21.7 million tons) and demolition (353.6 million tons) activities ...

Ways to Recycle and Reuse Concrete

The early phases of many construction projects involve the demolition of concrete foundations, sidewalks, driveways, and other concrete structures, which can leave a contractor with a sizable volume of heavy, dense materials to deal with. Fortunately, concrete can be recycled and reused in many ways. and reused in many ways.

Making the connection - Construction & Demolition Recycling

To build and add new ramps, K-Five needed to first demolish the concrete before building the ramps at 147th Street down from the overpass onto I-57. They tore up the concrete using their RX6 breaker from Chicago Pneumatic (CP), which would prove to have a major presence on the job site. HARD HITTERS

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Dry mix or wet concrete for ballast box

So I'm about to fill my semi-custom ballast box, and am debating whether to fill with dry mix, or go through the routine of mixing the concrete with water. Dry concrete mix is about 160-165 pounds per cubic foot (assumes minimal air), whereas wet mix ends up curing at 145 pounds per cubic foot.

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Sustainability and Precast Concrete

Sustainability and Precast Concrete 1. Is precast concrete a green building material? Precast concrete contributes to green building practices in significant ways. The low water-cement ratios possible with precast concrete -0.36 to 0.38- mean it can be extremely

Alternative Concrete Demolition Techniques

Concrete contractors dream about placing perfect concrete for precisely positioned columns, beams, and slabs. But sometimes things aren’t quite perfect or plans change and it’s necessary to demolish concrete. In many cases, a 60-pound breaker or a smaller ...

Classification of Aggregates Based on Size and Shape -Coarse

So, we can say that one should know definitely about the aggregates in depth to study more about concrete. Classification of Aggregates as per Size and Shape. Aggregates are classified based on so many considerations, but here we are going to discuss about their shape and size classifications in detail. Classification of Aggregates Based on Shape

Concrete Odors, Smells, Dust: exposure hazards, sources

Concrete Odors, Smells, Dust: exposure hazards, sources, remedies at ODOR DIAGNOSIS CHECKLIST, PROCEDURE we introduced the concept that while concrete itself is not normally much of an odor source once it has cured, people may observe or ...

Concrete Repair Solutions and Services

Fosroc believes that concrete should be built to last – our high quality protective systems and repair materials can prolong the life of a structure way beyond its original design life. Every penny spent on improving concrete quality, protection and enhancement pays off in the long term, reducing the need to demolish and rebuild structures ...

Environmental Management Plan (EMP) for Building Demolition

information system, and enhancing capacity. Activities funded through the project would help improve decision-making and planning in key climate vulnerable and water resources dependent sectors particularly agriculture, health, water and disaster management, and contribute to building climate resilience for communities at risk. The

How to Estimate the Cost of Commercial Demolition

To accurately estimate how much commercial demolition will cost, there are a few factors you'll need to consider. You'll need to determine how big the structure is, whether or not hazardous materials are present, and more.

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What is Lightweight Concrete? -Types, Uses and Advantages

Lightweight concrete mixture is made with a lightweight coarse aggregate and sometimes a portion or entire fine aggregates may be lightweight instead of normal aggregates. Structural lightweight concrete has an in-place density (unit weight) on the order of 90 to 115 lb / ft³ (1440 to 1840 kg/m³).

Use of RECYCLED AGGREGATES In CONCRETE

The extensive research on recycled concrete aggregate and recycled aggregate concrete (RAC) as started from year 1945 in various part of the world after second world war, but in a fragmented manner. First effort has been made by Nixon in 1977 who complied all ...

recycled aggregates crushed concrete crusher planting

recycling-concrete com - 365bet-365bet. Recycling of concrete is a relatively simple process It involves breaking removing and crushing existing concrete into a material with a specified size and quality See ACI 555 2001 for more information on processing old concrete into recycled concrete aggregates

"pouring" *dry* concrete | Page 2

Oct 05, 2013 · Having eaten more concrete than most have poured ( 200-300 cu yds/wk for nearly 13 yrs), I never once encountered a concrete truck of dry mix. Low slump yes, even on a 100 degree day with 1% calcium added due to a shelter being set the next morning. I suspect that there is a reason for this.

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How to break concrete or rocks easily using Dexpan

2017/11/27 · Concrete Demolition and Rock Breaking has never been easier with Dexpan Non-Explosive Demolition Agent. 3 easy steps: Drill, Mix and Pour. Dexpan is a cement with amazing 18,000 PSI expanding ...

Acceptance testing and criteria for ready mixed concrete in Hong

3 Concrete • Complex materials made of • Aggregates particles • Cementitious materials • Chemical admixtures • Polymer latex or bituminous emulsions • Various kinds of fibres • Difficulties in controlling the quality of concrete produced • Batchtch variations-to

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Underpinning to Repair Faulty Foundations

Start underpinning under a strip of footing. It is recommended to start with at least 3 feet long, two feet wide and two feet in depth. After the excavation has been completed, add concrete to the cavity. Concrete should be mixed using one part cement, three parts sand, and six parts aggregates. Remember to use formwork on the edges.

Wet Mix and Dry Mix Concrete: Cost and Quality

This is a conceptual proposal in which the main objective is to determine the cost and quality effectiveness on the application of modular wet mix and dry mix concrete batching plant.

Recycling of Brick Aggregate Concrete as Coarse

2014/01/29 · An extensive investigation was carried out for recycling of demolished brick aggregate concrete as coarse aggregate. For this, demolished concrete blocks were collected from 33 different building ...

Patching


rsMini

RoadStar Mini 4-9TPH

The RoadStar Mini is a single road towable asphalt batch mixing plant which is ideal for small paving & patching jobs, producing 4-9TPH of asphalt.

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spotMix

SpotMix 10-18TPH

The SpotMix is twin axled with up to twice the output of the RoadStar Mini, making it suitable for larger patching projects

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Mobile


srm

SuperRoadMix 30-90TPH

Compact and highly mobile, the Super-Roadmix fulfils all the requirements of a truly mobile asphalt plant.

Mounted on a single chassis are all the components necessary to repeatedly and reliably deliver 30, 60 or 90 TPH of high quality asphalt products.

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rs1000

RoadStar 500 / 1000 40-80TPH

The two chassis design of the RoadStar 500 & 1000 offers a high degree of mobility and allows the plant to be relocated quickly and easily, with minimum foundations or site preparation, making it ideal for island work, urban development or general road maintenance.

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rs3000

RoadStar 1500 / 2000 / 3000 120-240TPH

With outputs ranging from 120 to 240TPH, the three chassis design of the RoadStar 1500, 2000 & 3000 models offers a high degree of mobility and allows any plant to be relocated quickly and easily, with minimum foundations or site preparation.

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Drum Mix


drumMix

DrumStar 75-200TPH

The Parker DrumStar range is an economical and highly portable alternative to batch plants, offering contractors the ability to move quickly and easily from job-site to job-site while maintaining consistent high levels of quality asphalt production.

A choice of four models are available with capacities ranging from 75 to 200TPH; the chassis of the two smaller models is designed to be unbolted for transport across the world within standard containers.

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Modular


containerised_c750_thumb

Containerised C500 / C750 / C1000 40-80TPH

The Containerised series has been designed to fit into standard shipping containers to provide low cost transportation by road, rail or sea to remote locations. Modular and compact the series offers three sizes producing 40, 60 and 80 tonnes per hour. On completion of a contract the plant can be reloaded into its containers for security to await transport to the next location.

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transmix

TransMix 120-320TPH

The TransMix series has been primarily designed for markets that require high specification and high output asphalt plants with ease of transportation over large overland distances . The low-level TransMix has been designed to be free standing to alleviate the need for costly foundations and rapid installation can be achieved with its modular design.

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starBatch

StarBatch 80-200TPH

The modular concept of the StarBatch range is designed to offer contractors a plant that is easy to transport, easy to erect and easy to dismantle, having the ability to reliably produce quality asphalt for use in more remote locations on either short or long term contracts while at the same time maintaining many of the benefits of a traditional tower plant. Capacities from 80 to 200TPH.

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Static


starMix low

StarMix 160-400TPH

Meeting all the criteria for a high performance and environmental plant, the Parker StarMix is able to provide major asphalt production facilities and can draw on an extensive range of options and configurations to choose from.

Specific and exacting requirements of individual clients are able to be met in full in this high-end market sector with outputs ranging from 240 to 400TPH.

The StarMix High Level can optionally be sheeted and clad to customers' requirements, making the plant suitable for environmentally sensitive locations.

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Ancillary Equipment


parker ancillary equipment thumb

We offer a vast range of additional equipment to enhance the productivity size and flexibility of our customers' asphalt plants


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