Alternate mix design resources, such as the nrmca mix proportioning software for pervious concrete mixtures, have been developed to help producers design mixes that perform well. Dynamic system modeling for pervious concrete stormwater management systems is a service we provide for design professionals to aid in both design and permitting for projects. Optimal mix designs for pervious concrete for an urban area. 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. Pervious concrete is one of the best management practices recommended by the epaand by other agencies and geotechnical engineers across the countryfor managing stormwater runoff. These documents cover many different aspects of paving design. As the primary advantages of pervious concrete is its ability to rapidly infiltrate water, developing a suitable mix design for pervious concrete is essential before deploying this technology as an alternative pavement option. Permeable pavement design objective permeable pavement captures stormwater through voids in the pavement surface and filters water through an underlying aggregate reservoir.
Special attention must also be given to the overall design of the pavement system in order for pervious concrete to perform as intended. Materials utilization, blending, and yield management. The required minimum thickness for pervious concrete pavement, based on the design traffic, design life, and other structural inputs, and. Feb 11, 2016 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 pavement pervious concrete for green, sustainable. Nofines concrete backfill is design using 38 34 in. The final design is the responsibility of the engineer on record for the project. The first document is a guideline that details the pervious concrete mixture. See more ideas about driveway, pervious, driveway design. Perviouspave evaluation version acpas perviouspave is design software that provides results optimized for both structural and stormwatermanagement requirements by determining.
A pervious concrete parking lot in georgetown, ontario 2. Design criteria for permeable pavement minnesota stormwater. A numerical investigation on the use of pervious concrete. Now you can consolidate all material, mix, batch, cost,and test data and access this powerhouse of information from a single point of entry. Structural and hydrological design of sustainable pervious. When pervious concrete pavement systems are designed with a stone reservoir, the reservoir should be of sufficient depth to accommodate stormwater storage for the design storm event. Pervious concrete is a specially designed concrete mix that allows rain and stormwater runoff to pass through voids and seep into the ground.
A pervious concrete technician is a person who demonstrated knowledge by successful completion of a written exam about proper procedures to place, compact, finish, edge, joint, cure and protect pervious concrete pavements, but who lacks the requisite field experience to qualify as a pervious concrete installer or craftsman. Design permeable interlocking concrete pavement for pedestrian areas, parking lots, alleys and streets, the most durable and repairable permeable pavement. Design and construction of a pervious concrete pavement. Guidance for structural design of conventional concrete pavements is provided in aci 330r for parking lots and in aci 325. Nov 12, 2012 on the design tab, for concrete type choose pervious.
Nrmca pervious concrete contractor certification program. Mix design software, submittals software, concrete submittals. On the design tab, for concrete type choose pervious. Pervious concrete is a versatile nofines material that requires unique, but not difficult, construction techniques and tools. Two factors determine the design thickness of pervious pavements. See more ideas about concrete, pervious concrete and concrete driveways. Water absorbing pervious concrete pavement cemex usa. 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.
Proper engineering of the substrate beneath the pavement is essential, since it must be able to temporarily store the water while it percolates into the soil. Along with its many benefits, there are some limitations associated with the use of pervious concrete. This site focuses on the pavement applications of the material, which also has been referred to as porous concrete, permeable concrete, nofines concrete, gapgraded concrete, and enhancedporosity concrete. Software programs interlocking concrete pavement institute. The required minimum thickness for pervious concrete pavement, based on the design traffic, design life, and other structural inputs, and the required subbasereservoir thickness necessary to satisfy stormwater management requirements, based on the volume of water to be processed by the pavement within the required maximum detention time. Pca the portland cement association americas cement. Pdf pervious concrete pavement must perform as both a stormwater management tool. Pervious concrete pc pc is produced by reducing the fines in a conventional concrete mix with other changes to create interconnected void spaces for. Hydrological design of pervious concrete pervious pavement. General guidelines for pervious concrete surface thickness are published by the national ready mix concrete association nrmca and the portland cement association leming 2007. Pervious pavement is designed primarily to promote stormwater infiltration and improve the quality of stormwater runoff.
Design elements for pervious concrete hydrology, drainage, layout, subgrade soil, subbase, thickness, jointing 4. Acpas perviouspave is design software that provides results optimized for both structural and stormwatermanagement requirements by determining. The american concrete institute committee report aci 522rpervious concrete, chapter 7. The aci 522r10, report on pervious concrete, is a good guide to the mix design process. Acpas perviouspave is design software that provides results optimized for both. The acpa design method should be consulted for further information as well as pervious concrete industry software. Pervious concrete can be considered wherever there is a water issue.
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. Although most jointed plain concrete pavement structural design. Pervious concrete is traditionally used in parking areas, areas with light traffic, residential streets, pedestrian walkways, and greenhouses. If an attempt is made to construct a pervious pavement using conventional concrete placing techniques and procedures, the project will be less than satisfactory. Pervious concrete used in pavement systems must be designed to support the intended traffic load and contribute positively to the site. This means that the total mass of coarse aggregate in the mix will be computed using the jigged unit weight and a coarse bulk volume of 1, or in other words 100% of the volume of the mix. Pdf structural analysis of pervious concrete pavement. 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. It is typically designed to capture rainfall on the pavement surface area, but may also accept runon from adjacent impervious areas and other hardscapes sidewalks, rooftops, or gutters. Disclaimer stating that the design suggestions are not every known fact about concrete pavement but complies with current industry standards.
The program is designed to be administered locally by local sponsoring groups in conjunction with planned training sessions or demonstrations of pervious. This software is our recommendation for the fastest and easiest way to design pervious concrete pavement in terms of both hydrology and structure. Pervious concrete pavement has the same siting considerations as other infiltration practices. This pervious surface replaces traditional pavement, allowing stormwater to infiltrate.
Slab replacements can result when best practices arent followed. Pervious concrete pavements enviromental concrete the. The unique concrete mix consists of small aggregates 38 to 12 and cementitious materials to create a cement paste. It allows for the infiltration of rainwater as opposed to creating runoff and is ideal for commercial parking areas and other light duty applications such as pharmacies, offices, restaurants, banks and retail shops. Optimizing pervious concrete pavement mixture design by using.
Introduction to pervious concrete system design forester. Nov 02, 2015 precast pervious concrete slabs stormcretetm maine photos courtesy of stormcretetm, north yarmouth, maine 14. A report titled aci 522r10 report on pervious concrete is also available. Cemex offers pervious concrete a type of concrete that can aid stormwater management. Nov 24, 2015 the aci 522r10, report on pervious concrete, is a good guide to the mix design process. It is a sustainable technology and can be used for the low volume roads such as parking lots, driveways, and walkways. Perviouspave american concrete pavement association. Pervious concrete is widely used in design of environmentally friendly pavement. Using a specialized software and incorporating local and site specific data we can determine the optimum pavement and gravel base depths for a given project, based upon. Pdf best practices for pervious concrete mix design and. By capturing stormwater and allowing it to seep into the ground, porous concrete is instrumental in recharging groundwater, reducing stormwater runoff, and meeting u.
Test placement process a chieving the best possible outcome from a concrete mixture is an iterative. Therefore, it is necessary to investigate the sizes of studied block. While pervious concrete can be used for a surprising number of applications, its primary use is in pavement. The pavement costs represent the pervious concrete material and underlying granular material excluding the costs for premium fill material discussed below. However, most designs today cost more than they should and perform well below their potential. Pervious concrete pavement is a unique and effective means to address important environmental issues and support green, sustainable growth. A numerical investigation on the use of pervious concrete for. It is designed to allow water to flow through, making it an ideal product for use within sustainable drainage schemes suds.
Pervious concrete is very different than other types of concrete because of its mix design, placement procedures, and curing requirements. However, its applications in other constructions such as seawall structures are very limited and lacking of design standard. Stormwater management with pervious concrete pavement. Along with the software, two documents are included. Keywords pervious concrete,porosity, porous,mix design, permeability, stormwater. Aggregate entry will default to cvbfine mass dry and coarse bulk volume defaults to 1. Pervious concrete can be used for a variety of paving applications. Stonemontqc is fully integrated with the aggregate portion allowing for mix component properties to be easily kept current with data from aggregate plants. Pervious concrete uses the same materials as conventional concrete, with the exceptions that the fine aggregate typically is eliminated entirely, and the size distribution grading of the coarse aggregate is kept narrow, allowing for relatively little particle packing. Optimizing pervious concrete pavement mixture design by.