scholarly journals A study on the flow-resistance to planted porous concrete block

1996 ◽  
Vol 40 ◽  
pp. 1009-1014
Author(s):  
Kazutoshi KAN ◽  
Tuyoshi HORIGUCHI ◽  
Hideaki TARE
Keyword(s):  
Flow Resistance ◽  
Concrete Block ◽  
Porous Concrete

scholarly journals Water quality and quantity assessment of pervious pavements performance in experimental car park areas

2014 ◽  
Vol 69 (7) ◽  
pp. 1526-1533 ◽  
Author(s):  
Luis A. Sañudo-Fontaneda ◽  
Susanne M. Charlesworth ◽  
Daniel Castro-Fresno ◽  
Valerio C. A. Andres-Valeri ◽  
Jorge Rodriguez-Hernandez
Keyword(s):  
Water Quality ◽  
Drainage System ◽  
Concrete Block ◽  
Concrete Surface ◽  
Basic Oxygen Furnace ◽  
Total Petroleum Hydrocarbons ◽  
Porous Concrete ◽  
Base Materials ◽  
Bivariate Correlation ◽  
Car Park

Pervious pavements have become one of the most used sustainable urban drainage system (SUDS) techniques in car parks. This research paper presents the results of monitoring water quality from several experimental car park areas designed and constructed in Spain with bays made of interlocking concrete block pavement, porous asphalt, polymer-modified porous concrete and reinforced grass with plastic and concrete cells. Moreover, two different sub-base materials were used (limestone aggregates and basic oxygen furnace slag). This study therefore encompasses the majority of the materials used as permeable surfaces and sub-base layers all over the world. Effluent from the test bays was monitored for dissolved oxygen, pH, electric conductivity, total suspended solids, turbidity and total petroleum hydrocarbons in order to analyze the behaviour shown by each combination of surface and sub-base materials. In addition, permeability tests were undertaken in all car parks using the ‘Laboratorio Caminos Santander’ permeameter and the Cantabrian Portable Infiltrometer. All results are presented together with the influence of surface and sub-base materials on water quality indicators using bivariate correlation statistical analysis at a confidence level of 95%. The polymer-modified porous concrete surface course in combination with limestone aggregate sub-base presented the best performance.

scholarly journals WATER QUALITY PURIFICATION BY A POROUS CONCRETE BLOCK INCLUDING BACILLUS SUBTILIS NATTO GROUP

2007 ◽  
Vol 51 ◽  
pp. 1415-1420
Author(s):  
Nobuhiro MATSUNAGA ◽  
Sousuke MASUDA ◽  
Taishi NAKAMUTA ◽  
Takahisa TOKUNAGA ◽  
Shinichiro YANO ◽  
...  
Keyword(s):  
Water Quality ◽  
Bacillus Subtilis ◽  
Concrete Block ◽  
Porous Concrete ◽  
Bacillus Subtilis Natto

scholarly journals Viability of a terrace covered with porous concrete paving blocks for coffee bean drying

2021 ◽  
Vol 12 (4) ◽  
Author(s):  
João Pedro Junqueira Gomes ◽  
Alisson Pinto Soares Ponzo ◽  
Alisson Souza de Oliveira
Keyword(s):  
Concrete Block ◽  
Water Infiltration ◽  
Coffee Bean ◽  
Drying Process ◽  
Infiltration Capacity ◽  
Porous Concrete ◽  
Earth Blocks ◽  
Physical And Chemical ◽  
The City ◽  
And Storage

The success of the coffee activity depends on the beans drying process since it influences the physical and chemical coffee quality, whose result can be good or bad quality beverages. In this sense, the type of terrace has considerable influence on the product’s final quality. Therefore, in this study, ground soil terraces and porous concrete paving blocks will be evaluated, and the experiment was conducted in the city of Cambuquira/MG. For this purpose, porous concrete and compressed earth blocks with dimensions of 50 cm x 50 cm x 10 cm were built, totaling 10 blocks of each type of terrace. The experimental design was in randomized blocks (RB), using cherry coffee, with 10 replications, with a total of 20 plots. For the evaluation of the water infiltration capacity in the porous concrete paving block, a cylinder of 30 cm in diameter was used placed in the center of the porous concrete block, and the lower edges rejoined with cement to guarantee the use of the internal area of the cylinder only. The drying process of coffee on a porous concrete paving block terrace provided better quality both in the beverage and in the reduction of the number of defects in the beans. In the city of Cambuquira, the potential for infiltration and storage of rainwater is 58.8 m³ year-1. Considering a 10-year lifespan, the construction of the porous concrete paving block terrace is economically viable concerning the ground soil terrace, providing gains of up to 15%.

scholarly journals WAVE FORCE ON BREAKWATERS WITH CONCRETE BLOCK MOUN

1988 ◽  
Vol 1 (21) ◽  
pp. 159
Author(s):  
Masataro Hattori ◽  
Keiji Inagaki ◽  
Yuuji Noguchi ◽  
Taiji Endo
Keyword(s):  
Approximate Method ◽  
Flow Resistance ◽  
Concrete Block ◽  
Wave Theory ◽  
Wave Force ◽  
Theoretical Treatment ◽  
Practical Application ◽  
Rectangular Shape ◽  
Friction Law ◽  
Long Wave

Analytical theory is derived for prediction of the wave force acting on a upright structure armored by concrete block mound of rectangular shape. The theoretical treatment starts from the linear long wave theory and the flow resistance in the mound is described by a linearized friction law. As a practical application of the theory, approximate method for the structure with sloping block mound is proposed. Experiments are conducted to verify the theory and approximate method.

scholarly journals EFFECTS OF THE SHAPE OF POROUS CONCRETE BLOCK ON THE GROWTH OF ROOF GARDEN PLANTS

2001 ◽  
Vol 7 (14) ◽  
pp. 65-68
Author(s):  
Kazutoshi FUJII ◽  
Kenji TOKUNAGA ◽  
Hiroshi JITOUSONO ◽  
Hideo TAHARA ◽  
Torao KEMI
Keyword(s):  
Concrete Block ◽  
Porous Concrete ◽  
Garden Plants ◽  
Roof Garden

scholarly journals Observations of Infiltration Through Clogged Porous Concrete Block Pavers

1997 ◽  
Author(s):  
Chris Kresin ◽  
◽  
William James ◽  
David Elrick ◽  
◽  
...  
Keyword(s):  
Concrete Block ◽  
Porous Concrete
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