Compacted high-gravel-content subgrade materials

William N. Houston, Sandra Houston, Kenneth D. Walsh

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Gravelly subgrade materials are frequently evaluated on the basis of laboratory testing on material passing the number 4 sieve size due to difficulties in obtaining representative samples and because laboratory testing of soils containing rock is more difficult or expensive. When the large aggregate is not considered in the evaluation process, it is quite possible to discard a material as being inappropriate as subgrade material when in fact it may be quite suitable. For example, the presence of rock or gravel materials may have an ameliorating effect for clayey soils having potential for expansion upon wetting. The effect of large aggregate on the moisture sensitivity of subgrade materials are reviewed. It is more difficult to establish field specifications and to conduct field inspections for compaction of subgrades containing large aggregate. The potential pitfalls in obtaining the desired relative compaction in the field are discussed. The various commonly used techniques in writing field specifications for compaction of materials containing rock or gravel are reviewed.

Original languageEnglish (US)
Pages (from-to)193-205
Number of pages13
JournalJournal of Transportation Engineering
Volume120
Issue number2
StatePublished - Mar 1994

Fingerprint

Gravel
Compaction
Rocks
Specifications
Soils
Sieves
Testing
Wetting
Moisture
Inspection
evaluation

ASJC Scopus subject areas

  • Civil and Structural Engineering

Cite this

Compacted high-gravel-content subgrade materials. / Houston, William N.; Houston, Sandra; Walsh, Kenneth D.

In: Journal of Transportation Engineering, Vol. 120, No. 2, 03.1994, p. 193-205.

Research output: Contribution to journalArticle

Houston, WN, Houston, S & Walsh, KD 1994, 'Compacted high-gravel-content subgrade materials', Journal of Transportation Engineering, vol. 120, no. 2, pp. 193-205.
Houston, William N. ; Houston, Sandra ; Walsh, Kenneth D. / Compacted high-gravel-content subgrade materials. In: Journal of Transportation Engineering. 1994 ; Vol. 120, No. 2. pp. 193-205.
@article{29cacb9e0ce148af88db45b18637bc26,
title = "Compacted high-gravel-content subgrade materials",
abstract = "Gravelly subgrade materials are frequently evaluated on the basis of laboratory testing on material passing the number 4 sieve size due to difficulties in obtaining representative samples and because laboratory testing of soils containing rock is more difficult or expensive. When the large aggregate is not considered in the evaluation process, it is quite possible to discard a material as being inappropriate as subgrade material when in fact it may be quite suitable. For example, the presence of rock or gravel materials may have an ameliorating effect for clayey soils having potential for expansion upon wetting. The effect of large aggregate on the moisture sensitivity of subgrade materials are reviewed. It is more difficult to establish field specifications and to conduct field inspections for compaction of subgrades containing large aggregate. The potential pitfalls in obtaining the desired relative compaction in the field are discussed. The various commonly used techniques in writing field specifications for compaction of materials containing rock or gravel are reviewed.",
author = "Houston, {William N.} and Sandra Houston and Walsh, {Kenneth D.}",
year = "1994",
month = "3",
language = "English (US)",
volume = "120",
pages = "193--205",
journal = "Transportation engineering journal of ASCE",
issn = "0733-947X",
publisher = "American Society of Civil Engineers (ASCE)",
number = "2",

}

TY - JOUR

T1 - Compacted high-gravel-content subgrade materials

AU - Houston, William N.

AU - Houston, Sandra

AU - Walsh, Kenneth D.

PY - 1994/3

Y1 - 1994/3

N2 - Gravelly subgrade materials are frequently evaluated on the basis of laboratory testing on material passing the number 4 sieve size due to difficulties in obtaining representative samples and because laboratory testing of soils containing rock is more difficult or expensive. When the large aggregate is not considered in the evaluation process, it is quite possible to discard a material as being inappropriate as subgrade material when in fact it may be quite suitable. For example, the presence of rock or gravel materials may have an ameliorating effect for clayey soils having potential for expansion upon wetting. The effect of large aggregate on the moisture sensitivity of subgrade materials are reviewed. It is more difficult to establish field specifications and to conduct field inspections for compaction of subgrades containing large aggregate. The potential pitfalls in obtaining the desired relative compaction in the field are discussed. The various commonly used techniques in writing field specifications for compaction of materials containing rock or gravel are reviewed.

AB - Gravelly subgrade materials are frequently evaluated on the basis of laboratory testing on material passing the number 4 sieve size due to difficulties in obtaining representative samples and because laboratory testing of soils containing rock is more difficult or expensive. When the large aggregate is not considered in the evaluation process, it is quite possible to discard a material as being inappropriate as subgrade material when in fact it may be quite suitable. For example, the presence of rock or gravel materials may have an ameliorating effect for clayey soils having potential for expansion upon wetting. The effect of large aggregate on the moisture sensitivity of subgrade materials are reviewed. It is more difficult to establish field specifications and to conduct field inspections for compaction of subgrades containing large aggregate. The potential pitfalls in obtaining the desired relative compaction in the field are discussed. The various commonly used techniques in writing field specifications for compaction of materials containing rock or gravel are reviewed.

UR - http://www.scopus.com/inward/record.url?scp=0028400802&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028400802&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0028400802

VL - 120

SP - 193

EP - 205

JO - Transportation engineering journal of ASCE

JF - Transportation engineering journal of ASCE

SN - 0733-947X

IS - 2

ER -