Errors arising in the measurement of the gradings of sub-base aggregates

Sherwood, P. T.; Pike, D C

doi:10.1007/bf02594452

Cited by 1 publication

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“…Engineering test such as permeability, compaction, shear strength and consolidation test were also conducted on all the samples because although they are largely sands, it contained a proportionate amount of finer soils. These test were selected since according to [4] to assess the suitability of an aggregate for use in road construction, representative samples of the aggregate have to be subjected to tests and these test must be tests that best define the properties that are relevant to their performance and the test results compared with values given in the specification. All test for engineering parameters were conducted in accordance with B.S.1377 (BSI 1975) and all classification were done according to the Unified soil classification scheme (USCS).…”

Section: Methodsmentioning

confidence: 99%

“…Based on these results, they concluded that the subgrade samples are excellent to good while base sample is fair to poor. Reference [4] noted that specifications for aggregates that are used in sub-base construction are based on knowledge that has been gained about the performance of similar aggregates when used for road construction and about the tests that best define the properties that are relevant to their performance. To assess the suitability of an aggregate for use in road construction, representative samples of the aggregate have to be subjected to these tests and the test results compared with values given in the specification.…”

Section: Literature Reviewmentioning

confidence: 99%

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Assessment of the Implications of Geotechnical Properties of Soils in Otukpa Area of Ogbadibo LGA, Benue State, Nigeria

Ameh¹,

Ogbonnaya²,

Lawal³

et al. 2018

JGG

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This study evaluates the index and engineering properties of soils in Otukpa Area of Benue State towards ascertaining their suitability for use as fill and embankment, sub-base and base course material. Otukpa in Benue state Nigeria has vast reserve of sand and other aggregate materials that are presently been mined for various construction purposes. The area holds good potential for human population explosion in the near future. When massive infrastructural development commences, localized sourcing of materials would be necessary. Unfortunately, not much is known of the geotechnical properties of the sands in this area. Index and engineering test was conducted to achieve the aim. Gravel size particles are completely absent. Permeability of soil ranged from 7.8×10 -6 to 3.36×10 -4 m/sec with moisture content of 11.38 to 14.16%. Specific gravity was between 2.63 to 2.67g/cm 3 . UCS range from 31-45Kpa while LL and PL ranged between 27-35% and 10-18% respectively. MDD peak value was 1.85(g/cm 3 ) at an OMC of 12.11% and lowest at 1.67(g/cm 3 ) at an OMC of 11.99. The geotechnical implication of the observed properties range from susceptibility to marginal volume change, differential settlement to low shearing resistance. These materials are quality reserves for fill, embankment and sub-base construction but not for bases.

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Section: Methodsmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%