Subgrade Soil Stabilization Using Cement Kiln Dust
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Use of Cement Kiln Dust for Subgrade Stabilization
Author | : Robert L. Parsons |
Publisher | : |
Total Pages | : 55 |
Release | : 2004 |
Genre | : Cement |
ISBN | : |
This report contains a summary of the performance of a wide range of soils treated with pre-calciner cement kiln dust (CKD), and is intended to be viewed as a companion report to the previously published Kansas Department of Transportation report, "Performance of Soil Stabilization Agents." CKD was combined with a total of eight different soils with classifications of CH, CL, ML, SM, and SP. Durability testing procedures included freeze-thaw, wet-dry, and leach testing. Atterberg limits and strength tests were also conducted before and after selected durability tests. Changes in pH were monitored during leaching. Relative values of soil stiffness were also tracked over a 28-day curing period using the soil stiffness gauge.
Laboratory and Field Evaluation of Soil Stabilization Using Cement Kiln Dust
Author | : |
Publisher | : |
Total Pages | : 158 |
Release | : 2003 |
Genre | : Soil mechanics |
ISBN | : |
A field and laboratory study was undertaken to evaluate Cement Kiln Dust (CKD) as a soil stabilizer. The performance of CKD from three different sources, Holnam of Ada, Blue Circle Cement of Tulsa, and Lone Star Industries, Inc. of Pryor was compared to to the performance of Quick Lime. The field component involved the construction of four test sections along a rural highway near Lula, Oklahoma.
AASHTO Guide for Design of Pavement Structures, 1993
Author | : American Association of State Highway and Transportation Officials |
Publisher | : AASHTO |
Total Pages | : 622 |
Release | : 1993 |
Genre | : Pavements |
ISBN | : 1560510552 |
Design related project level pavement management - Economic evaluation of alternative pavement design strategies - Reliability / - Pavement design procedures for new construction or reconstruction : Design requirements - Highway pavement structural design - Low-volume road design / - Pavement design procedures for rehabilitation of existing pavements : Rehabilitation concepts - Guides for field data collection - Rehabilitation methods other than overlay - Rehabilitation methods with overlays / - Mechanistic-empirical design procedures.
Soil Stabilization and Erosion Control of Slopes by Cement Kiln Dust
Author | : Bahareh Ghazvinian |
Publisher | : |
Total Pages | : 218 |
Release | : 2008 |
Genre | : Cement --Testing |
ISBN | : |
Evaluation of Solidification/stabilization for Treating Contaminated Soils from the Rocky Mountain Arsenal
Author | : R. Mark Bricka |
Publisher | : |
Total Pages | : 440 |
Release | : 1995 |
Genre | : Rocky Mountain Arsenal (Colo.) |
ISBN | : |
Lime Kiln Dust for Treated Subgrades
Author | : Jamal Kakrasul |
Publisher | : |
Total Pages | : 201 |
Release | : 2017 |
Genre | : |
ISBN | : |
Chemical and cementitious materials are often used to modify and stabilize the subgrade soils that serve as foundations for pavements. Improvement of the subgrade provides a better working platform for construction of the layers above and improves the strength of the pavement structure. Lime, cement, and fly ash have all been successfully used for soil modification/stabilization; however, increasing material costs and availability concerns have motivated Departments of Transportation and the construction industry to investigate alternatives. This report describes the results of a laboratory and field investigation of the performance of lime kiln dust added as an alternative soil stabilization material. Lime kiln dust (LKD) is a byproduct of lime production. It is sold in the form of a dry powder that contains a significant percentage of lime along with a substantial amount of inert material. It is currently used for subgrade improvement in multiple states. The purpose of this report is to describe the results of field investigations that took place at three construction sites where LKD was used and laboratory testing of five soils treated with LKD, lime, and fly ash. Field testing methods included Shelby tube sampling and use of the dynamic cone penetrometer and light weight deflectometer. Tests were conducted on the day of mixing and multiple days thereafter, so the benefits of curing could be evaluated. Lab testing included standard characterization tests followed by strength, swell, resilient modulus, and wet-dry testing. The testing results showed that, after a relatively short curing period, LKD provided substantial improvement to soil properties. Approximately 60% of this improvement was achieved after 1 day, and more than 80% was achieved after 3 days. During laboratory testing, LKD performed comparably with lime in reducing plasticity and swelling potential and increasing strength and durability. Addition of LKD substantially lowered the plasticity, free volume change, and swelling potential of the native soils tested in this report. Soils treated with LKD showed higher strength gain than unsoaked samples that were lime treated. However, lime-treated soil samples gained more strength for soaked conditions. Fly ash had the least strength gain. The effect of adding LKD on the durability of soil was comparable with lime, and much better than the performance of fly ash. Based on the results of this research, consideration of the use of LKD as a soil stabilization agent was recommended.
Validation and Refinement of Chemical Stabilization Procedures for Pavement Subgrade Soils in Oklahoma
Author | : Amy B. Cerato |
Publisher | : |
Total Pages | : 112 |
Release | : 2011 |
Genre | : Pavements |
ISBN | : |
Additions of byproduct chemicals, such as fly ash or cement kiln dust, have been shown to increase the unconfined compression strength (UCS) of soils. To be considered effective, the soil must exhibit a strength increase of at least 50 psi. Many current design methods base chemical additive percentage recommendations on the results of Atterberg limit tests which do not always properly characterize the soil stabilization response. For example, Atterberg limit tests may reveal the same AASHTO classification of soil at two different sites, but one site may require more than twice the additive percentage of a chemical to achieve the desired UCS increase. / This study examined the relationship between soil physico-chemical parameters and unconfined compression strength in various fine-grained soils to determine if other soil parameters have significant effects on predicting the strength of a soil treated with a given additive and additive content. The results of this study suggest that the surface area and shrinkage properties of the soil, combined with Atterberg limit results, present a better picture of a given soil and will allow for better predictions of the amount of chemical stabilizer needed to adequately stabilize the soil.