6533b86dfe1ef96bd12c9f7d
RESEARCH PRODUCT
Hydraulic conductivity and strength of pervious concrete for deep trench drains
Calogero ValoreMaurizio Ziccarellisubject
CementAggregate (composite)Pervious concreteHydraulic conductivityPervious concrete0211 other engineering and technologies02 engineering and technology010502 geochemistry & geophysicsGeotechnical Engineering and Engineering GeologyResidual01 natural sciencesCurrent (stream)CloggingHydraulic conductivityShear strength (soil)Trench drainsEnvironmental scienceGeotechnical engineeringStrengthComputers in Earth SciencesSafety Risk Reliability and Quality021101 geological & geomatics engineering0105 earth and related environmental sciencesdescription
Abstract Pervious concrete for deep trench drains, used to stabilise slopes, must meet many requirements, namely, adequate hydraulic conductivity, adequate shear strength a few days after pouring, capacity to act as a protective filter for soils in which the drain is installed, good resistance to clogging and adequate residual hydraulic conductivity. In current engineering practice, the composition of pervious concrete for drains is improperly selected according to criteria used for no-fines concrete for road pavements. To detect more suitable and specific criteria, a laboratory investigation has been conducted aimed at identifying the composition and the properties of pervious concrete satisfying the above requirements. The results of these tests are reported in the paper. They show that it is possible to devise mix-designs of pervious concrete that satisfy all the abovementioned requirements. Special attention has been paid to the hydraulic conductivity and the strength and to their relationship to the water/cement and the aggregate/cement ratios and to the granulometric composition of the aggregates.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-06-01 | Geomechanics for Energy and the Environment |