What is pervious concrete pervious concrete is a special type of concrete with a high porosity used for concrete flatwork applications that allows water from precipitation and other resources to pass through it, thereby reducing the runoff from a site and recharging ground water levels. Pervious concrete is a zeroslump, opengraded material consisting of cement, coarse aggregate, admixtures and water. In conjunction with the striker compaction ability, bunyan offers the skip float, our long handled pan finishing system for unmatched flatness and surface durability in pervious concrete. Pervious concrete is a special high porosity concrete. Pervious concrete is delivered to the jobsite by conventional readymix trucks and placed within standard forms. Topmix permeable is a fast draining concrete pavement solution that rapidly directs stormwater off streets, parking surfaces, driveways and walkways. This concrete is a mixture of cement, corse aggregate and with or without sand. In fact, curing for pervious slabs and pavements begins before the concrete is placed the sub grade must be moistened to prevent it from absorbing moisture from the concrete.
Presenters chad jones civil engineer, lochsa engineering rusty boicourt, p. Pervious pavement systems offer designers and planners an effective tool for managing stormwater. Pervious concrete pavement for stormwater management. Pervious concrete has been placed in freezethaw climates for over 15 years.
Quantity and flood control water quality treatment. Pervious concrete pavement maintenance and operations. Pervious concrete contains little or no fine aggregates such as sand, it is sometimes referred to as nofines concrete. Ppt pervious concrete pavement powerpoint presentation. Pervious concrete is a durable concrete pavement with a large volume approx. Optimal mix designs for pervious concrete for an urban area.
Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. This pervious surface replaces traditional pavement, allowing stormwater to infiltrate. Pervious concrete, the basics bay area pervious concrete. These systems manage stormwater by increasing the rate and volume of stormwater. Pervious concrete free download as powerpoint presentation.
To download and display this picture, click options. Water is then stored underneath the pavement until it has time to naturally infiltrate down into the subgrade and recharge ground water resources. Cement hydration recognize low water traits recognize early hydration process recognize evaporation water cement ratio is about the water of conventional concrete. Click here to download a pdf about pervious concrete. Pervious concrete pervious concrete is also called as no fines or porous concrete. Pervious concrete is usually more freezethaw durable than conventional concrete. Pervious concrete is a unique blend of concrete with interconnected voids which allow hundreds of inches per hour of rain to drain through. Ppt pervious concrete powerpoint presentation free to. Introduction to pervious concrete system design forester.
Like conventional concrete, it is made from a mixture of cement, coarse aggregates, and water. Pervious pavements installation, operations and strength. Pervious concrete pavements have not been lost to freezethaw conditions. Pcpc has been used in a variety of applications, notable among which are low. Pervious concrete is a new concrete with high porosity which usually used for flat work applications in order to allow water to pass through it, and by that it reduces the volume of direct water. Classic pervious concrete specification decorative pervious concrete slide deck bay area pervious concrete maintenance manual bay area pervious concrete nrmca certificates emergency services and pervious concrete research paper palo. Stormwater management with pervious concrete pavement. Pervious concrete mix calculator powered by procure. Porous concrete ppt free download as powerpoint presentation. Team elmers employed pervious concrete for the state of michigan at otsego lake state park. Mix design and mechanical properties of highperformance. Pervious concrete is typically design with high void content1525%.
Compressive strength pervious concrete mixtures can develop compressive strengths in the range 3. Topmix permeable the ultimate permeable concrete system. In view of the imperfections of traditional permeable concrete in mechanics, this paper aimed to find a suitable material composition that can be used as a feasible mix design of highperformance pervious concrete, to essentially improve its mechanical properties. A 180degree departure from conventional design, new pervious concrete systemswhich operate according to a principle known as large area thin infiltration systems latisare considerably more effective and versatile than other stormwater management bmps if properly designed. If an attempt is made to construct a pervious pavement using conventional concrete placing techniques and procedures, the project will be less than satisfactory. The sf has a high capacity to consume calcium hydroxide and hence improves the itz around the aggregate. Pervious concrete pavement for stormwater management benefits and uses pervious concrete can be used in place of traditional stormwater management measures given the proper site conditions. While pervious pavements have become very popular in the area of stormwater management, the true applicability to the highway environment is still unclear. Typical pervious concrete pavement cross section adapted from. Figure 1 shows a typical cross section of a pervious concrete pavement. This minimises the cost and longterm maintenance for local authorities and developers of stormwater management. The pervious concrete mix design calculator is intended to be used by the concrete design professional that is competent to evaluate its significance and limitation and who will accept responsibility for its proper application. Recommended specifications freeze thaw continued research indicates that entrained air in the paste dramatically improves freezethaw protection sulfate resistance aggressive chemicals in soils or water, such as acids and sulfates, are a concern to. This guidance considers pervious concrete pavement pcp, pervious asphalt pavement pap also known nationally as porous asphalt pavement, and permeable interlocking concrete pavement picp.
However, it contains little or no sand, which results in a porous opencell structure that allows. Porous asphalt permeable pavers pervious concrete also overlays template. Pervious pavement market global forecast to 2026 this report provided by grandresearchstore is about, pervious pavement market projected to grow at a cagr of 5. The voids in the pervious concrete allow for water which expands 9% when it turns into ice to expand and contract within the voids. Curing as pervious concrete pavements do not bleed, they can have a high propensity for plastic shrinkage cracking. Pervious concrete beam pervious concrete system has advantages over impervious concrete in that it is effective in managing runoff from paved surfaces, prevent contamination in runoff water, and recharge aquifer, repelling salt water intrusion, control pollution in water seepage to ground water recharge thus, preventing. Ppt perviousporous concrete powerpoint presentation. Perviousporous concrete perviousporous concrete poolesville town hall site plan details selling the idea this is different to what is normal in appearance explain that this is part.
Because pervious concrete is thicker in consistency than regular concrete, a vibrating mechanical screed is used to level it off. Ppt pervious concrete powerpoint presentation free to download. Pervious pavements installation, operations and strength part 1. Generally, an ebook can be downloaded in five minutes or less. This completely eliminates run off from even the worst storms. Successful applications of pervious concrete in freezethaw environments have two common design featuresthe cement paste is airentrained, and the pervious concrete is placed on 6 12 inches of drainable aggregate base 34 or larger clean gravel. Prevent water from entering into the stream and also prevents it.
A pervious concrete pavement may be placed with either fixed forms or slipform paver. Pervious concrete is widely recognized as a sustainable building material, as it reduces. Report on pervious concrete reported by aci committee 522 aci 522r10 this report provides technical information on pervious concretes application, design methods, materials, properties, mixture proportioning, construction methods, testing, and inspection. Keywordspervious concrete,porosity, porous,mix design, permeability, stormwater. Pervious pavement porous pavements advanced design. Pervious concrete is known as no fines, gap graded or porous concrete.
The term pervious concrete typically describes a nearzeroslump. To help protect your privacy, powerpoint prevented this external picture from being automatically downloaded. The bunyan striker and skip float combination is the best one two punch in. The mechanical properties of traditional pervious concrete are insufficient, which limits its application. Pervious porous concrete pervious porous concrete poolesville town hall site plan details selling the idea this is different to what is normal in appearance explain that this is part. Obla pervious concrete is a special high porosity concrete used for flatwork applications that allows water from precipitation and other sources to pass through, thereby reducing the runoff from a site and recharging ground water levels. Campers are delighted to note safe, flat, dry concrete surfaces ideal for firepits and walking and free of stormwater runoff. Pervious concrete has been successfully used for low volume streets, driveways,sidewalks, golf cart paths, slope protection and french drains. A presentation on pervious concrete characteristics design considerations applications placement techniques advantages disadvantages recycled. Pervious concrete also called porous concrete, permeable concrete, no fines concrete and porous pavement is a special type of concrete with a high porosity used for concrete flatwork applications that allows water from precipitation and other sources to pass directly through, thereby reducing the runoff from a site and allowing groundwater recharge.
Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. The drainage rate of pervious concrete pavement will vary with aggregate size and density of the mixture, but will generally fall into the range of 2 to 18 gal. Introduction pervious concrete is a special type of concrete with a high porosity used for concrete flatwork applications that allows water from precipitation and other sources to pass directly through, thereby reducing the runoff from a site. However, most designs today cost more than they should and perform well below their potential. Pervious concrete is a versatile nofines material that requires unique, but not difficult, construction techniques and tools. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. To download and display this picture, click options in the message bar, and then click enable external content. The most common approach to placing pervious concrete is in forms on grade that have a riser strip on the top of each form such that the strike off device is actually 3812 in. Pervious concrete is traditionally used in parking areas, areas with high traffic, walk ways in parks and gardens, residential streets, pedestrian walkways and green houses, basket ball and volley ball courts etc.
Pervious concrete is an important application for the sustainable construction and is one of many low impact development techniques. Pervious concrete does not require the measurement of flexural strength for design. Pervious concrete pavement description pervious concrete pavement is a permeable pavement, often with an underlying stone reservoir, that captures rainfall and stores runoff before it infiltrates into the subsoil. Pervious concrete pavements enviromental concrete the. A free powerpoint ppt presentation displayed as a flash slide show on id. Pervious concrete advantages applications design construction testing.
945 969 375 1575 1532 818 445 1487 547 1306 537 812 600 1501 514 503 1155 695 688 1097 1377 143 694 1001 105 1553 1387 270 57 1183 462 836 605 329 1262 103 668 218 390 1345 725 504