Experimental Research on Pervious Concrete Mixed with Polypropylene Split Fiber(PPSF)

2014 ◽  
Vol 1065-1069 ◽  
pp. 1894-1898
Author(s):  
Run Dong Gao ◽  
Qing Feng Xu ◽  
Xiang Min Li ◽  
Min Shan Du
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Experimental Research ◽  
Permeability Coefficient ◽  
Pervious Concrete ◽  
Performance Tests ◽  
Light Traffic ◽  
Ordinary Light ◽  
Porosity And Permeability ◽  
Application Requirements

Performance tests are conducted on pervious concrete mixed with Polypropylene Split Fiber (PPSF), in which basic indexes such as compressive strength, splitting strength, flexural strength, porosity, permeability coefficient are measured. Results indicate: mixed with certain amount of PPSF in ordinary pervious concrete is feasible, and during mixing PPSF is split into uniformly distributed monofilament fiber without occurrence of agglomeration or rustiness; incorporating 3kg PPSF in 1m3 pervious concrete is proper, under which compared with the ordinary pervious concrete, both porosity and permeability coefficient are decreased, but application requirements are still met, while strength is increased obviously; the pervious concrete mixed with PPSF can be used in ordinary light traffic pavements.

scholarly journals Strength Time–Varying and Freeze–Thaw Durability of Sustainable Pervious Concrete Pavement Material Containing Waste Fly Ash

2018 ◽  
Vol 11 (1) ◽  
pp. 176 ◽  
Author(s):  
Hanbing Liu ◽  
Guobao Luo ◽  
Longhui Wang ◽  
Yafeng Gong
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Flexural Strength ◽  
Pervious Concrete ◽  
Early Age ◽  
Pavement Materials ◽  
Freeze Thaw ◽  
Replacement Method ◽  
Porosity And Permeability ◽  
Volume Method

Pervious concretes, as sustainable pavement materials, have great advantages in addressing a number of environmental issues. Fly ash, as the industrial by-product waste, is the most commonly used as cement substitute in concrete. The objective of this paper is to study the effects of waste fly ash on properties of pervious concrete. Fly ash was used to replace cement with equivalent volume method at different levels (3%, 6%, 9%, and 12%). The control pervious concrete and fly ash modified pervious concrete were prepared in the laboratory. The porosity, permeability, compressive strength, flexural strength, and freeze–thaw resistance of all mixtures were tested. The results indicated that the addition of fly ash decreased the early-age (28 d) compressive strength and flexural strength, but the long-term (150 d) compressive strength and flexural strength of fly ash modified pervious concrete were higher than that of the early-age. The adverse effect of fly ash on freeze–thaw resistance of pervious concrete was observed when the fly ash was added. The porosity and permeability of all pervious concrete mixtures changed little with the content of fly ash due to the use of equal volume replacement method. Although fly ash is not positive to the properties of pervious concrete, it is still feasible to apply fly ash as a substitute for cement in pervious concrete.

scholarly journals Pervious concrete: study of dosage and polypropylene fibers addiction

2019 ◽  
Vol 12 (1) ◽  
pp. 101-121 ◽  
Author(s):  
S. E. PILS ◽  
P. OLIVEIRA ◽  
F. REGOSO ◽  
V. A. PAULON ◽  
M. F. COSTELLA
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Permeability Coefficient ◽  
Main Property ◽  
Pervious Concrete ◽  
Polypropylene Fibers ◽  
Design And Implementation ◽  
Reference Mixture

Abstract The use of pervious concrete to minimize the effects caused by the impermeability of the soil as a result of increasing urbanization is an alternative that still requires further studies regarding its design and implementation. From this perspective, this paper presents a study of the characteristics of pervious concrete, including its tensile strength, compressive strength, flexural strength and the permeability coefficient, through the development of various mixtures to adjust the characteristics of the local aggregates. Eight mixtures were studied based on a reference mixture, five of which were related to the pervious concrete with the addition of finer aggregates than the reference mixture without these aggregates. Subsequently, three mixtures were studied with the inclusion of polypropylene fibers in order to analyze the effects of the addition of fibers on the properties of the pervious concrete. It is concluded that the presence of fibers changed the characteristics of the concrete, increasing its strengths while achieving a good permeability in its mixtures. An improvement in the flexural strength of the pervious concrete was observed, which is the main property to be considered for its use in pavements, without harming the permeability, which raises the possibility for its application.

Influence on Permeability and Mechanical Properties of Pervious Concrete by Aggregate Gradation

2013 ◽  
Vol 438-439 ◽  
pp. 145-148 ◽  
Author(s):  
Xiao Yan Zhang ◽  
Na Liang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Permeability Coefficient ◽  
Splitting Tensile Strength ◽  
Pervious Concrete ◽  
Aggregate Gradation ◽  
Single Grain ◽  
Low Porosity

The skeleton of concrete is determined by aggregate gradation. This paper studies the permeability and mechanical properties of pervious concrete affected by the aggregate gradation. Eight levels of aggregate gradation were selected, which included the single grain grading, double size grain grading and continuous grading. It is found that by series of tests, compared to the pervious concrete with the single grain grading and double size grain grading, the pervious concrete with continuous grading has low porosity, small permeability coefficient, high cubic compressive strength and similar splitting tensile strength and the flexural strength.

Experimental Research of the Permeable Concrete with Rigid Polymeric Fibers

2013 ◽  
Vol 821-822 ◽  
pp. 1204-1207
Author(s):  
Xiao Fan Liu ◽  
Ting Wang ◽  
Ji Xiang Li
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Experimental Research ◽  
Performance Tests ◽  
Concrete Compressive Strength ◽  
Forming Process ◽  
Polymeric Fibers ◽  
Mix Proportion ◽  
Strength Tests ◽  
Tensile Splitting Strength

In order to improve the hardness and strength of the permeable concrete, rigid polymeric fibers are mixed to the concrete. Compressive strength tests, flexural strength tests, tensile splitting strength tests and permeable performance tests prove that the rigid polymeric fibers could increase the hardness and strength of the permeable concrete. The optimized mix proportion and forming process are recommended to support the application of the permeable concrete.

scholarly journals Evaluation of Pervious Concrete Utilizing Recycled HDPE as Partial Replacement of Coarse Aggregate with Acrylic as Additive

2019 ◽  
Vol 258 ◽  
pp. 01018
Author(s):  
Neslyn Lopez ◽  
Emilia Collado ◽  
Lois Alexandra Diacos ◽  
Harold Dave Morente
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Coarse Aggregate ◽  
Physical And Mechanical Properties ◽  
Pervious Concrete ◽  
Partial Replacement ◽  
Acrylic Polymer ◽  
Typical Application ◽  
Porosity And Permeability ◽  
Recycled Hdpe

Pervious concrete is an eco-friendly alternative and is beneficial to providing good rainwater drainage in order to prevent flooding. But the application is limited to lower trafficked roadways and often times disregarded due to its low strength capabilities. This study investigates on the effect of High-denstiy Polyethylene as partial replacement of coarse aggregates on the physical and mechanical properties of Acrylic Polymer Pervious Concrete (AcPPC). Two different coarse aggregate sizes were evaluated which are ½” and ¾” with varying ratios of 10%, 20%, and 30%. It was determined that the partial replacement of recycled HDPE caused an increase in the porosity and permeability of the AcPPC. However, it decreased the AcPPC’s compressive and flexural strength. Only the ½” 10% HDPE modified Pervious Concrete with 15% Acrylic Additive (PCHA) achieved a compressive strength that is within the range of the acceptable compressive strength for pervious concrete. While for the flexural strength, both the ½” 10% PCHA and ¾” 10% PCHA was within the standard values for flexural strength of pervious concrete. Thus, making the ½” 10% PCHA as the optimum mix in this study. The application of PCHA is limited to typical application of a pervious concrete.

Properties of Low Water/Cement Ratio and High Compressive Strength Pervious Concrete

2018 ◽  
Vol 932 ◽  
pp. 136-140
Author(s):  
Mao Chieh Chi ◽  
Jiang Jhy Chang ◽  
Wei Chung Yeih
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Water Permeability ◽  
Permeability Coefficient ◽  
Pervious Concrete ◽  
Unit Weight ◽  
Cement Pastes ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Water Permeability Coefficient

The purpose of this study is to discuss the properties of low water/cement ratio and high compressive strength pervious concrete. Two sizes of air-cooling electric arc furnace slag (EAFS), for the same size of 0.24 - 0.48 cm and 0.48 - 0.96 cm, were prepared as the coarse aggregates. Two water-to-cement ratios and three filled percentages (70, 80, and 90%) of voids by cement pastes were selected as variables. The unit weight, connected porosity, water permeability coefficient, compressive strength, and flexural strength of pervious concrete were conducted. Test results show that the pervious concrete with higher filled percentage of voids by cement paste has higher unit weight, compressive strength, and flexural strength and smaller connected porosity and water permeability coefficient. The lower the water/cement ratio and EAFS size, the superior the properties. At the water/cement ratio of 0.25, pervious concrete with EAFS size of 0.24 – 0.48 cm and 90% filled percentage of voids by cement pastes had the highest compressive strength of 35 MPa and flexural strength of 7 MPa.

High-Strength High-Porosity Pervious Concrete Pavement

2013 ◽  
Vol 723 ◽  
pp. 361-367 ◽  
Author(s):  
Emiko Lim ◽  
Kiang Hwee Tan ◽  
Tien Fang Fwa
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
High Strength ◽  
Concrete Pavement ◽  
Pervious Concrete ◽  
High Porosity ◽  
Cement Ratio ◽  
Mix Proportion ◽  
Porosity And Permeability ◽  
Permeability Rate

A study to achieve high-strength, high porosity and permeability pervious concrete pavement was carried out. First, the mix proportion in terms of cement content and coarse aggregate-cement ratio (CA/C) and water-cement (W/C) ratio were varied. Next, a mix proportion providing the optimal combination of strength and porosity was chosen, and polymer superplasticizers and short discrete fibers were added to examine their effect on the strength and porosity. Results showed that a water-cement ratio of 0.2 resulted in a dry and brittle mix that led to compressive strength less than 15 MPa but a high permeability rate of approximately 20mm/s. A mix with CA/C ratio of 4.25 resulted in compressive strength of 13.9 MPa, flexural strength of 3MPa and high porosity of more than 20%. Using comb polymer superplasticier and 2% steel fibers resulted in compressive strength of 25.1 MPa and flexural strength of 3.6 MPa at 28 days without compromising on the porosity.

The Aggregate’s Influences on Properties of Porous Pervious Concrete Made of Recycled Aggregates

2014 ◽  
Vol 584-586 ◽  
pp. 1271-1275
Author(s):  
Ping Gong ◽  
Wen Liang Zhang
Keyword(s):  
Particle Size ◽  
Compressive Strength ◽  
Single Particle ◽  
Permeability Coefficient ◽  
Pervious Concrete ◽  
Recycled Aggregates ◽  
Particle Mixing ◽  
Compressive Strength Of Concrete

In this study,different particle size’s aggregates ,different aggregate correction coefficients and different sand ratio were selected to study the aggregate’s influences on properties of porous pervious concrete made of recycled aggregates.The results shows that the 28-day compressive strength of concrete with single particle size is lower than those with two kinds of particle mixing ,as for the permeability coefficient, the former is much higher than the latter .With the aggregate correction coefficient’s increase,the 28-day compressive strengths of concrete increases first and then decreases, the permeability coefficient increases . The 28-day compressive strengths of concrete increases with the increase of the sand ratio. the permeability coefficient increases first ,decreases then.

The Research on the Effect of Granite Powder on Concrete Performance

2012 ◽  
Vol 204-208 ◽  
pp. 3760-3764 ◽  
Author(s):  
Pi Jie Ying ◽  
Fu Sheng Liu ◽  
Shu Xia Ren ◽  
Gang Gang Dong
Keyword(s):  
Mechanical Property ◽  
Compressive Strength ◽  
Relative Permeability ◽  
Experimental Research ◽  
Permeability Coefficient ◽  
Cement Based Materials ◽  
Result Show ◽  
Granite Powder

Abstract: The experimental research on the effect of different incorporation of granite powders on the workability, mechanical property and impermeability performance of concrete is carried out. The result show that the concrete with an appropriate dosage of granite powder exhibits favorable workability, impermeability performance and cohesiveness. And granite powders agree with cement-based materials. Within some dosage of granite powders, the compressive strength of the mixture is approximate to that of common concrete. When the 10% of cement was replaced by the granite powder, good impermeability performance exhibits, with the relative permeability coefficient 30% lower than that of common concrete.

scholarly journals Study on the Permeability of Recycled Aggregate Pervious Concrete with Fibers

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 321 ◽  
Author(s):  
Haitang Zhu ◽  
Chengcheng Wen ◽  
Zhanqiao Wang ◽  
Lan Li
Keyword(s):  
Compressive Strength ◽  
Permeability Coefficient ◽  
Polypropylene Fiber ◽  
Volumetric Analysis ◽  
Pervious Concrete ◽  
Recycled Aggregate ◽  
Fiber Types ◽  
Cross Sectional ◽  
Cement Ratio ◽  
Water Cement Ratio

Pervious concrete is considered to be porous concrete because of its pore structure and excellent permeability. In general, larger porosity will increase the permeability coefficient, but will significantly decrease the compressive strength. The effects of water-cement ratio, fiber types, and fiber content on the permeability coefficient, porosity, compressive strength, and flexural strength were investigated. The pore tortuosity of the pervious concrete was determined by volumetric analysis and two-dimensional cross-sectional image analysis. The concept and calculation method of porosity tortuosity were further proposed. Results show that the permeability coefficient of the pervious concrete is the most suitable with a water-cement ratio of 0.30; the water permeability of the pervious concrete is influenced by fiber diameter. The permeability coefficient of pervious concrete with polypropylene thick fiber (PPTF) is greater than that with copper coated steel fiber (CCF) and the polypropylene fiber (PPF). The permeability coefficient is related to tortuosity and porosity, but when porosity is the same, the permeability coefficient may be different. Finally, general relations between the permeability coefficient and porosity tortuosity are constructed.

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