The Experts below are selected from a list of 2661 Experts worldwide ranked by ideXlab platform
Edwin G Burdette - One of the best experts on this subject based on the ideXlab platform.
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performance comparison of laboratory and field produced Pervious Concrete mixtures
Construction and Building Materials, 2011Co-Authors: Baoshan Huang, Hao Wu, Qiao Dong, Edwin G BurdetteAbstract:Abstract Portland cement Pervious Concrete (PCPC) is an environmentally friendly paving material that has been increasingly used in parking lots as well as low volume and low speed pavements. Although specifications are available for the mix design and construction of Pervious Concrete, there still remains a need for laboratory tests to ensure the anticipated performance of laboratory designed Pervious Concrete. In this study, the performance of laboratory and field produced Pervious Concrete mixtures as well as field cores were evaluated and compared through laboratory performance tests, including air voids, permeability, compressive and split tensile strengths, as well as Cantabro and freeze–thaw durability tests. Two types of coarse aggregate, limestone and granite, with two gradings, No. 8 and No. 89 specified in ASTM C33, were used to produce the mixtures. Latex, air-entraining admixture (AEA), and high range water reducer (HRWR) were also added to improve the overall performance of Pervious Concrete. The results indicated that the mixtures made with limestone and latex had lower porosity and permeability, as well as higher strength and abrasion resistance than other mixtures. Even for Pervious Concrete, the addition of AEA could still help to improve the freeze–thaw resistance. The comparison between laboratory and field mixtures showed that a properly designed and laboratory verified Pervious Concrete mixture could meet the requirements of permeability, strength, and durability performance in the field.
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laboratory evaluation of permeability and strength of polymer modified Pervious Concrete
Construction and Building Materials, 2010Co-Authors: Baoshan Huang, Hao Wu, Edwin G BurdetteAbstract:Abstract Pervious Concrete has been increasingly used to reduce the amount of runoff water and improve the water quality near pavements and parking lots. However, due to the significantly reduced strength associated with the high porosity, Pervious Concrete mixtures currently cannot be used in highway pavement structures. A laboratory experiment was conducted in this study to improve the strength properties of Pervious Concrete through the incorporation of latex polymer. This study focused on the balance between permeability and strength properties of polymer-modified Pervious Concrete (PMPC). In addition to latex, natural sand and fiber were included to enhance the strength properties of Pervious Concrete. The test results indicate that it was possible to produce Pervious Concrete mixture with acceptable permeability and strength through the combination of latex and sand.
Baoshan Huang - One of the best experts on this subject based on the ideXlab platform.
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performance comparison of laboratory and field produced Pervious Concrete mixtures
Construction and Building Materials, 2011Co-Authors: Baoshan Huang, Hao Wu, Qiao Dong, Edwin G BurdetteAbstract:Abstract Portland cement Pervious Concrete (PCPC) is an environmentally friendly paving material that has been increasingly used in parking lots as well as low volume and low speed pavements. Although specifications are available for the mix design and construction of Pervious Concrete, there still remains a need for laboratory tests to ensure the anticipated performance of laboratory designed Pervious Concrete. In this study, the performance of laboratory and field produced Pervious Concrete mixtures as well as field cores were evaluated and compared through laboratory performance tests, including air voids, permeability, compressive and split tensile strengths, as well as Cantabro and freeze–thaw durability tests. Two types of coarse aggregate, limestone and granite, with two gradings, No. 8 and No. 89 specified in ASTM C33, were used to produce the mixtures. Latex, air-entraining admixture (AEA), and high range water reducer (HRWR) were also added to improve the overall performance of Pervious Concrete. The results indicated that the mixtures made with limestone and latex had lower porosity and permeability, as well as higher strength and abrasion resistance than other mixtures. Even for Pervious Concrete, the addition of AEA could still help to improve the freeze–thaw resistance. The comparison between laboratory and field mixtures showed that a properly designed and laboratory verified Pervious Concrete mixture could meet the requirements of permeability, strength, and durability performance in the field.
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laboratory evaluation of permeability and strength of polymer modified Pervious Concrete
Construction and Building Materials, 2010Co-Authors: Baoshan Huang, Hao Wu, Edwin G BurdetteAbstract:Abstract Pervious Concrete has been increasingly used to reduce the amount of runoff water and improve the water quality near pavements and parking lots. However, due to the significantly reduced strength associated with the high porosity, Pervious Concrete mixtures currently cannot be used in highway pavement structures. A laboratory experiment was conducted in this study to improve the strength properties of Pervious Concrete through the incorporation of latex polymer. This study focused on the balance between permeability and strength properties of polymer-modified Pervious Concrete (PMPC). In addition to latex, natural sand and fiber were included to enhance the strength properties of Pervious Concrete. The test results indicate that it was possible to produce Pervious Concrete mixture with acceptable permeability and strength through the combination of latex and sand.
Fabienne Baraud - One of the best experts on this subject based on the ideXlab platform.
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durability of Pervious Concrete using crushed seashells
Construction and Building Materials, 2017Co-Authors: Dang Hanh Nguyen, Mohamed Boutouil, Nassim Sebaibi, Fabienne Baraud, Lydia LeleyterAbstract:Abstract Pervious Concrete is one of the most important emerging technologies for sustainable facilities and infrastructure. Significant research and development have been carried on Pervious Concrete; however, the durability of the Pervious Concrete remains a challenge. In this study, the durability of Pervious Concrete, with or without the crushed seashells, are studied by: freeze-thaw resistance test with and without deicing salt, clogging test and leaching test. The shell Pervious Concrete was created by replacing 60% mass of the natural aggregates in control Pervious Concrete by crushed seashells. The freeze-thaw resistance of the shell Pervious Concrete is lower than the control Pervious Concrete and it was not proportional with the mechanical strength. In addition, a blended material with silty clay and sand as a clogging agent causes a significant decrease on the drainage capacity of Pervious Concrete. However, the Pervious Concretes remains permeably even after the clogging (k > 0.5 mm.s −1 ). Furthermore, the leaching of Pervious Concretes occurs quickly after contacting with demineralized water. This experiment showed also that some chemical characteristic (chloride ion and organic matter content) of crushed shells could have more influence on the durability than the physical and mechanical properties of Pervious Concrete. As a final, this article shows an acceptable durability of Pervious Concrete with and without crushed shells for the application of low traffic load.
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a modified method for the design of Pervious Concrete mix
Construction and Building Materials, 2014Co-Authors: Dang Hanh Nguyen, Mohamed Boutouil, Nassim Sebaibi, Lydia Leleyter, Fabienne BaraudAbstract:Abstract As a new material type for pavement, Pervious Concrete should be designed to maintain both porosity and the structural strength. The actual mix proportions for Pervious Concrete depend on the application, the mechanical properties required and the materials used. Actually, the mix proportions of Pervious Concrete were determined for locally available materials based frequently on trial batching and experience. Another analytical method should be developed to facilitate the Concrete producers. Based on the assumption that the cement paste only plays a role of coating, it does not fulfill the void among the grains of gravel; this paper focuses on one modified method for the design of the Pervious Concrete. The volume cement paste is divided by the surface area of the aggregates to determine the thickness of the excess paste. A scaling factor has been defined to evenly distribute the cement paste toward the size of gravel. Moreover, a binder drainage test is proposed to determine the critical w / c ratio towards to prevent the flow of cement paste to the lower layers of Concrete under the action of vibration or compaction. The Pervious Concrete has been formulated according to this method to validate it. The mechanical and hydraulic tests are performed to characterize the Pervious Concrete. The obtained Pervious Concrete presents a large sufficient permeability (1 mm s −1 ) for draining rainwater and good mechanical resistance ( R c = 28.6 MPa) with regard to typical Pervious Concrete applications such as parking lots, walkways and low-traffic roadways. In addition, the mechanical strength of Pervious Concrete in this research is found higher than that generally reported by other authors. The results indicate that the theoretical mix design method is a successful theory for an optimizing composition of Pervious Concrete.
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valorization of seashell by products in Pervious Concrete pavers
Construction and Building Materials, 2013Co-Authors: Dang Hanh Nguyen, Mohamed Boutouil, Nassim Sebaibi, Lydia Leleyter, Fabienne BaraudAbstract:Abstract Seashell By-Products (SBP) are produced in an important quantity in France and are considered as waste. This paper studies their use as a partial replacement of aggregates in Pervious Concrete pavers considered as an environmentally friendly building material. After designing the control Pervious Concrete pavers by investigating the energy and the pressure compaction, the coarse aggregate fraction were partially (20% or 40% by mass) replaced by SBP obtained from the Crepidula shell. The crushed Crepidula seashell of 2/4 mm and 4/6.3 mm were used to make new seashell by-products based pavers. In this paper, the mechanical and hydrologic properties of both Pervious Concrete pavers were determined. Results show that the seashell by-products have the potential to be used as aggregate. The mix design allows achieving both a compressive strength of 16 and 15 MPa for respectively the control Pervious Concrete pavers and the seashell by-products based pavers and a permeability coefficient in the range of 3–8 mm s −1 .
Guoliang Jiang - One of the best experts on this subject based on the ideXlab platform.
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experimental study on properties of Pervious Concrete pavement materials
Cement and Concrete Research, 2003Co-Authors: Jing Yang, Guoliang JiangAbstract:In this paper, a Pervious Concrete pavement material used for roadway is introduced. Using the common material and method, the strength of the Pervious Concrete is low. Using smaller sized aggregate, silica fume (SF), and superplasticizer (SP) in the Pervious Concrete can enhance the strength of Pervious Concrete greatly. The Pervious pavement materials that composed of a surface layer and a base layer were made. The compressive strength of the composite can reach 50 MPa and the flexural strength 6 MPa. The water penetration, abrasion resistance, and freezing and thawing durability of the materials are also very good. It can be applied to both the footpath and the vehicle road. It is an environment-friendly pavement material.
Dang Hanh Nguyen - One of the best experts on this subject based on the ideXlab platform.
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durability of Pervious Concrete using crushed seashells
Construction and Building Materials, 2017Co-Authors: Dang Hanh Nguyen, Mohamed Boutouil, Nassim Sebaibi, Fabienne Baraud, Lydia LeleyterAbstract:Abstract Pervious Concrete is one of the most important emerging technologies for sustainable facilities and infrastructure. Significant research and development have been carried on Pervious Concrete; however, the durability of the Pervious Concrete remains a challenge. In this study, the durability of Pervious Concrete, with or without the crushed seashells, are studied by: freeze-thaw resistance test with and without deicing salt, clogging test and leaching test. The shell Pervious Concrete was created by replacing 60% mass of the natural aggregates in control Pervious Concrete by crushed seashells. The freeze-thaw resistance of the shell Pervious Concrete is lower than the control Pervious Concrete and it was not proportional with the mechanical strength. In addition, a blended material with silty clay and sand as a clogging agent causes a significant decrease on the drainage capacity of Pervious Concrete. However, the Pervious Concretes remains permeably even after the clogging (k > 0.5 mm.s −1 ). Furthermore, the leaching of Pervious Concretes occurs quickly after contacting with demineralized water. This experiment showed also that some chemical characteristic (chloride ion and organic matter content) of crushed shells could have more influence on the durability than the physical and mechanical properties of Pervious Concrete. As a final, this article shows an acceptable durability of Pervious Concrete with and without crushed shells for the application of low traffic load.
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a modified method for the design of Pervious Concrete mix
Construction and Building Materials, 2014Co-Authors: Dang Hanh Nguyen, Mohamed Boutouil, Nassim Sebaibi, Lydia Leleyter, Fabienne BaraudAbstract:Abstract As a new material type for pavement, Pervious Concrete should be designed to maintain both porosity and the structural strength. The actual mix proportions for Pervious Concrete depend on the application, the mechanical properties required and the materials used. Actually, the mix proportions of Pervious Concrete were determined for locally available materials based frequently on trial batching and experience. Another analytical method should be developed to facilitate the Concrete producers. Based on the assumption that the cement paste only plays a role of coating, it does not fulfill the void among the grains of gravel; this paper focuses on one modified method for the design of the Pervious Concrete. The volume cement paste is divided by the surface area of the aggregates to determine the thickness of the excess paste. A scaling factor has been defined to evenly distribute the cement paste toward the size of gravel. Moreover, a binder drainage test is proposed to determine the critical w / c ratio towards to prevent the flow of cement paste to the lower layers of Concrete under the action of vibration or compaction. The Pervious Concrete has been formulated according to this method to validate it. The mechanical and hydraulic tests are performed to characterize the Pervious Concrete. The obtained Pervious Concrete presents a large sufficient permeability (1 mm s −1 ) for draining rainwater and good mechanical resistance ( R c = 28.6 MPa) with regard to typical Pervious Concrete applications such as parking lots, walkways and low-traffic roadways. In addition, the mechanical strength of Pervious Concrete in this research is found higher than that generally reported by other authors. The results indicate that the theoretical mix design method is a successful theory for an optimizing composition of Pervious Concrete.
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valorization of seashell by products in Pervious Concrete pavers
Construction and Building Materials, 2013Co-Authors: Dang Hanh Nguyen, Mohamed Boutouil, Nassim Sebaibi, Lydia Leleyter, Fabienne BaraudAbstract:Abstract Seashell By-Products (SBP) are produced in an important quantity in France and are considered as waste. This paper studies their use as a partial replacement of aggregates in Pervious Concrete pavers considered as an environmentally friendly building material. After designing the control Pervious Concrete pavers by investigating the energy and the pressure compaction, the coarse aggregate fraction were partially (20% or 40% by mass) replaced by SBP obtained from the Crepidula shell. The crushed Crepidula seashell of 2/4 mm and 4/6.3 mm were used to make new seashell by-products based pavers. In this paper, the mechanical and hydrologic properties of both Pervious Concrete pavers were determined. Results show that the seashell by-products have the potential to be used as aggregate. The mix design allows achieving both a compressive strength of 16 and 15 MPa for respectively the control Pervious Concrete pavers and the seashell by-products based pavers and a permeability coefficient in the range of 3–8 mm s −1 .