Underwater Compaction of Sand Fill During Placement
A system and related equipment have been developed, and tested on a recent dredged fill project, to compact sand, either clean or with limited silt, in lifts several feet in thickness...
Subsurface Soil Monitoring via Acoustic Emission
Included in this paper is an overview of acoustic emission (AE) monitoring and a brief review of past applications. Focus is then placed on two in-situ geotechnical applications; preconsolidation...
Ground Improvement Evaluation by In-Situ Tests
The application of in-situ testing to the design and evaluation of a large sand densification project for the Jebba Hydroelectric Development is described. Correlation between the standard...
In Situ Testing for Ground Modification Techniques
Presented are the status of three in situ testing techniques in relation to Ground Modification and a general overview of eight Ground Modification methods with case histories and appropriate...
Dilatometer Tests for the Design of Grouted Piles in Rock
A case study of drilled and grouted piles in rock, which were analyzed using results of down-hole dilatometer tests is presented. The tests were performed from a jack-up platform in water...
Dilatometer Tests in Sand
The paper presents two applications of the dilatometer test in sands: control of compaction and determination of constrained modulus. Twelve dilatometer tests were carried out before and...
Soil Improvement Evaluation by CPT for Tanks
Trial soil improvement by gravel compaction piles and dynamic consolidation, and a subsequent full-scale loading test on loose volcanic ash soil were conducted prior to the design of large...
Design Parameters for Grouted Piles in Rock From In-Situ Load Tests
A series of pile load tests were performed at an onshore site to develop final geotechnical parameters for the Gaviota platform foundation which consists of large diameter drilled and...
CPT/DMT QC of Ground Modification at a Power Plant
The use of 908 static cone penetration test (CPT) and 33 Marchetti dilatometer test (DMT) soundings provided the quality control (QC) needed to improve a power plant site by the use of...
The Use of Cone Penetrometer Testing to Investigate Sand Fill Subsidence Beneath Highways
During construction of Interstate I-10 between Baton Rouge and LaPlace, Louisiana, highly organic swamp deposits were excavated and replaced with hydraulically pumped river sand. The main...
Permeability of Grouts Subjected to Chemicals
This paper presents the more recent results of a testing program which evaluated the long-term resistance to percolation of grouted soils, using acrylate, urethane and cement-bentonite...
Available Compaction Equipment
When discussing available compaction equipment we must keep in mind the purpose of compaction. Compaction is the art of artificially increasing the density or increasing the unit weight...
Supply Side Engineering
In New Jersey, the Hackensack Water Co., a private utility, and the North Jersey District Water Supply Commission, a state agency, are jointly completing Wanaque South, a $151 million...
RCC: A Dam Rehab Solution Unearthed
Roller compacted concrete (RCC) is fast becoming a popular material for the rehabilitation of existing dams. Several dams have already been rehabilitated using RCC, and several more RCC...
Grouting a Sand Dam
Hardy Dam, owned by Michigan's Consumers Power Co., was constructed in 1929 by dumping sand from railroad trestles for an embankment to support a concrete core wall. Some...
Jet Grouting: Snail's Pace of Adoption
Jet grouting is grouting of soil, but the process, the equipment and the subsurface product are different from the familiar ones. Here the cement grouting is mixed in situ with the surrounding...
Soil Cement Shore Protection in Arctic Environment
Suitability of compacted and plastic soil cement prepared with sea water, for shore protection of islands in Arctic marine environment, is investigated. The laboratory test results indicate...
Improving Arctic Seafloor Soil Stability
Soft, low strength soil layers at or beneath the Beaufort seafloor mean that soil strengthening may be necessary to ensure the stability of oil exploration and production structures under...
Dam Pioneers Concrete Variant
The Willow Creek Dam in Oregon is the nation's first dam made entirely of roller compacted concrete. The design and construction of this dam are described and special problems...
Look Back and Learn
The cancellations of some nuclear power plants are being attributed in part to cost overruns due to construction-related problems. The experienced civil construction engineer involved...
Return to search