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
2014 ◽  
Vol 26 (6) ◽  
pp. 1811-1815 ◽  
Author(s):  
Zhongyuan Li ◽  
Jie Yang ◽  
Shaobo Li ◽  
Xinyi Xu ◽  
Hanzhi Song

Author(s):  
A A M Sharif ◽  
S Shahidan ◽  
H B Koh ◽  
A Kandash ◽  
S S Mohd Zuki

2014 ◽  
Vol 2014 ◽  
pp. 1-17 ◽  
Author(s):  
Tun Chi Fu ◽  
Weichung Yeih ◽  
Jiang Jhy Chang ◽  
Ran Huang

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.


Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 593
Author(s):  
Haining Geng ◽  
Qing Xu ◽  
Saiful B. Duraman ◽  
Qiu Li

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.


Author(s):  
Afifudin Habulat ◽  
Hamidah Mohd Saman ◽  
Muhd Norhasri Muhd Sidek ◽  
Daliah Hassan ◽  
Nor Hafida Hashim

Cerâmica ◽  
2018 ◽  
Vol 64 (372) ◽  
pp. 519-525
Author(s):  
A. Ribeiro ◽  
V. dos Santos ◽  
D. T. Pagnussat ◽  
R. N. Brandalise

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.


2018 ◽  
Vol 4 (5) ◽  
pp. 949 ◽  
Author(s):  
Qijian Lin ◽  
Liang Choufu

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.


Author(s):  
L.G. Li ◽  
J.J. Feng ◽  
Z.C. Lu ◽  
H.Z. Xie ◽  
B.F. Xiao ◽  
...  

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