scholarly journals Orthogonal Analysis of Water Permeability of Pervious Concrete

2014 ◽  
Vol 26 (6) ◽  
pp. 1811-1815 ◽  
Author(s):  
Zhongyuan Li ◽  
Jie Yang ◽  
Shaobo Li ◽  
Xinyi Xu ◽  
Hanzhi Song
Keyword(s):  
Water Permeability ◽  
Pervious Concrete ◽  
Orthogonal Analysis

scholarly journals The Influence of Aggregate Size and Binder Material on the Properties of Pervious Concrete

2014 ◽  
Vol 2014 ◽  
pp. 1-17 ◽  
Author(s):  
Tun Chi Fu ◽  
Weichung Yeih ◽  
Jiang Jhy Chang ◽  
Ran Huang
Keyword(s):  
Mechanical Strength ◽  
Silica Fume ◽  
Cement Paste ◽  
Water Permeability ◽  
Aggregate Size ◽  
Pervious Concrete ◽  
Superior Performance ◽  
Water Permeability Coefficient ◽  
The Difference ◽  
Activated Slag

Specimens were prepared by altering parameters such as aggregate sizes, binder materials, and the amounts of binder used and were subsequently tested by using permeability, porosity, mechanical strength, and soundness tests. The results indicated that the water permeability coefficient and connected porosity decreased as the amount of binder used increased and increased with increasing aggregate size. In the mechanical strength test, the compressive, splitting tensile, and flexural strengths increased as the amount of binder used increased and decreased with the increase of aggregate size. Highly viscous binder enhanced compressive strength, water permeability, and the resistance to sulfate attacks. In the mechanics and sulfate soundness tests, the mix proportion of alkali-activated slag paste used in this study exhibited a superior performance than the Portland cement pervious concrete (the control) did, but the difference in water permeability between the two types of concrete was insignificant. The mix proportions of cement paste containing 20% and 30% silica fume exhibited less mechanical strength than the control did. Moreover, compared with the control, the cement paste containing silica fume demonstrated poor resistance to sulfate attacks, and the difference in the water permeability between such specimen and the control was not noticeable.

scholarly journals Effect of Rheology of Fresh Paste on the Pore Structure and Properties of Pervious Concrete Based on the High Fluidity Alkali-Activated Slag

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 593
Author(s):  
Haining Geng ◽  
Qing Xu ◽  
Saiful B. Duraman ◽  
Qiu Li
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Pore Structure ◽  
Water Permeability ◽  
Coarse Aggregate ◽  
Pervious Concrete ◽  
Alkali Activated Slag ◽  
Activated Slag ◽  
Alkali Activated

Pervious concrete is made of cementitious materials, coarse aggregate, water and additives, with characteristic macro- and meso-connected pore structure, which enables the acceptable mechanical properties and high water permeability for pavement and road applications. In this study, the effect of rheology of fresh alkali-activated slag paste on the sedimentation of paste on the bottom of pervious concrete, meso-structure, connected porosity, mechanical properties and water permeability was investigated by a range of analytical techniques through varying the equivalent alkali content to control the rheology of fresh paste in the pervious concrete. The compressive strength of pervious concrete was related to the percentage area of paste and the average thickness of paste on the surface of coarse aggregate. The tensile strength and water permeability were correlated to the connected porosity of pervious concrete and the rheology of fresh paste. A relative lower fluidity, higher viscosity and shear stress of fresh alkali-activated slag paste favoured lower sedimentation of paste on the bottom of pervious concrete, higher connected porosity, tensile strength and water permeability. There was no correlation between compressive strength and tensile strength of pervious concrete.

scholarly journals Assessment of a system for the prediction of water permeability coefficient in pervious concretes

Cerâmica ◽  
2018 ◽  
Vol 64 (372) ◽  
pp. 519-525
Author(s):  
A. Ribeiro ◽  
V. dos Santos ◽  
D. T. Pagnussat ◽  
R. N. Brandalise
Keyword(s):  
Mechanical Properties ◽  
Measurement System ◽  
Water Permeability ◽  
Permeability Coefficient ◽  
Pervious Concrete ◽  
Coefficient Of Permeability ◽  
Water Permeability Coefficient ◽  
Fine Aggregates ◽  
Water Saturated

Abstract Proposing a system which makes it possible to determine the water permeability coefficient in pervious concretes in a practical way, without the need of devices which require complex instrumentation, is one of the aims of this work. An experimental matrix was proposed for the evaluation of the measurement system of the coefficient of permeability into pervious concrete considering three different pervious concretes obtained from different aggregate granulometric sizes, under the condition of dry sample or water saturated. The pervious concretes were characterized by their void contents, mechanical properties and later compared with the properties of a reference, control concrete made up of coarse and fine aggregates. The different properties exhibited in this study were assessed aiming at validating the experimental matrix developed for pervious concretes to provide a basis for comparison with information available in the literature. As a noticeable result, it was evidenced that the permeability coefficient of 0.21 cm.s-1 obtained for concrete with aggregate dimensions of 2.4 to 9.5 mm. It is possible to measure the coefficient of permeability of pervious concrete with the system developed in this study; the obtained results agree with the description of ACI522-06 for pervious concretes.

scholarly journals An Analogue Experiment on Pervious Concrete Subject to Dust Fall Blocking

2018 ◽  
Vol 4 (5) ◽  
pp. 949 ◽  
Author(s):  
Qijian Lin ◽  
Liang Choufu
Keyword(s):  
Water Permeability ◽  
Pervious Concrete ◽  
Porous Asphalt ◽  
Dust Fall ◽  
Concrete Mixtures ◽  
Permeability Function ◽  
Porous Pavement ◽  
Technical Indicator ◽  
Analogue Experiment ◽  
Porous Asphalt Concrete

Increased urbanization comes with increased traffic volume which gradually decrease the draining effect of porous asphalt concrete through porosity blocking. This study aims to discuss clogging as a result of dust or sand and the subsequent changes at the permeability function after rainfall. Four groups of pervious concrete mixtures were prepared. Aggregates were coarse and fine bottom ashes from the refuse incinerator. Prior to conducting the experiments, the permeability in the groups ranged from 1399.75 ~ 1412.91 ml/15sec. We adopted the 2011 average monthly dust fall in Pingtung County and magnified it by 10 and 20 times to simulate natural dust fall and clump dust fall on the pavement. Ruling out other factors, our results suggest that natural dust fall has little influence on the water permeability of pervious concrete. Water permeability was reduced sharply when the natural dust fall was increased 15 times. Moreover, it never surpassed the 400 ml/15sec minimum of the Japanese porous pavement technical indicator.

Effects of aggregate bulking and film thicknesses on water permeability and strength of pervious concrete

2021 ◽  
Author(s):  
L.G. Li ◽  
J.J. Feng ◽  
Z.C. Lu ◽  
H.Z. Xie ◽  
B.F. Xiao ◽  
...  
Keyword(s):  
Water Permeability ◽  
Pervious Concrete

scholarly journals Water Permeability of Pervious Concrete Is Dependent on the Applied Pressure and Testing Methods

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Yinghong Qin ◽  
Haifeng Yang ◽  
Zhiheng Deng ◽  
Jiang He
Keyword(s):  
Water Permeability ◽  
Applied Pressure ◽  
Pervious Concrete ◽  
Testing Methods ◽  
Applied Water ◽  
Apparent Permeability ◽  
Testing Method ◽  
Water Head ◽  
Constant Head ◽  
Constant Head Method

Falling head method (FHM) and constant head method (CHM) are, respectively, used to test the water permeability of permeable concrete, using different water heads on the testing samples. The results indicate the apparent permeability of pervious concrete decreasing with the applied water head. The results also demonstrate the permeability measured from the FHM is lower than that from the CHM. The fundamental difference between the CHM and FHM is examined from the theory of fluid flowing through porous media. The testing results suggest that the water permeability of permeable concrete should be reported with the applied pressure and the associated testing method.

scholarly journals Strength Development and Water Permeability of Engineered Biomass Aggregate Pervious Concrete

2016 ◽  
Vol 47 ◽  
pp. 01007 ◽  
Author(s):  
S. Shahidan ◽  
H. B. Koh ◽  
A. M. Sharif Alansi ◽  
L. Y. Loon
Keyword(s):  
Water Permeability ◽  
Pervious Concrete ◽  
Strength Development

scholarly journals Effect of Fly Ash and Fibres on Strength and Permeability Characteristics of Pervious Concrete

2019 ◽  
Vol 8 (4) ◽  
pp. 12089-12093
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Flexural Strength ◽  
Water Permeability ◽  
High Strength ◽  
High Water ◽  
Pervious Concrete ◽  
Storm Water ◽  
Water Runoff ◽  
Concrete Mix

Conventional normal cement concrete is generally used as construction material of buildings. The impervious nature of concrete contributes to the increased water runoff into drainage system, over-burdening the infrastructure and causing excessive flooding in built-up areas. Pervious concrete has become significantly popular during recent decades, because of its potential contribution in solving environmental issues. Pervious concrete is a type of concrete with significantly high water permeability compared to conventional concrete. It has been mainly developed for draining water from surface to underground, so that storm water runoff is reduced. Due to high water permeability then normal concrete, pervious concrete has very low compressive strength. The characteristic of high permeability of pervious concrete contributes to its advantage in storm water management. However, the mechanical property such as low compressive strength limits the application of pervious concrete to the roads having light volume traffic. It is observed form previous studies that the strength of pervious concrete can be enhanced by substituting some of the cement with other materials, such as fly ash and fibres. The objective of present study was to make pervious concrete mix with high strength and pore properties by partial replacement of cement with fly ash and using steel and glass fibres. For this purpose cubes beams were casted with and without replacement of cement with flyash and addition of steel and glass fiber by total weight of concrete mix. Test such as compressive strength, flexural strength, total porosity and Infiltration rate were performed. It was observed addition of fly ash decreased the compressive as well as flexural strength of the pervious concrete. Further, incorporation of 1% steel fibres by weight of concrete mix was found adequate in achieving high strength and permeability, when compared to control mix concrete

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