Field Test Of Buried Pipe With Clsm Backfill

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Field Test of Buried Pipe with CLSM Backfill

Author : TJ. McGrath
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Field Test of Buried Pipe with CLSM Backfill by : TJ. McGrath

Download or read book Field Test of Buried Pipe with CLSM Backfill written by TJ. McGrath and published by . This book was released on 1998 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: A buried pipe was installed using controlled low strength material (CLSM) as backfill as part of a study of installation procedures for buried pipe. A laboratory evaluation of mix designs was undertaken prior to the field test to determine the suitability of the component materials and establish a mix with acceptable flow characteristics and a 28 day compressive strength of less than 1000 kPa (145 psi). The mix selected developed an average compressive strength of 334 kPa (48 psi) at 7 days and 600 kPa (87 psi) at 28 days, and Young's moduli of 120 MPa (17 ksi) at 7 days and 190 MPa (28 ksi) at 28 days. The field installation was in a trench with a width equal to the pipe outside diameter plus 600 mm. One length each of 900 mm nominal inside diameter concrete, corrugated steel and corrugated HDPE pipe was elevated on bags of gravel to allow the CLSM to flow under the pipe. The plastic and metal pipes were weighted with bags of gravel to minimize flotation. The CLSM was placed to the springline in two lifts, two hours apart. The metal pipe floated slightly while the second lift was being placed. Backfilling above the CLSM with a native clay commenced about 16 hours after installation of the CLSM. The CLSM provided excellent support for the pipe in especially hard to reach areas underneath the pipe. Pipe deflections were small and similar to those for the same pipe and high quality crushed stone backfill carefully placed and well compacted. Re-excavation of the installation about three weeks later showed that the CLSM backfill provided excellent support; however, excavation was difficult, even at that early age. A lowering of the target strength for the CLSM mix design to between 200 kPa and 400 kPa (30 psi and 60 psi) at 28 days is recommended for providing more excavatable backfill.

The Design and Application of Controlled Low-strength Materials (flowable Fill)

Author : Amster K. Howard
Publisher : ASTM International
ISBN 13 : 0803124775
Total Pages : 342 pages
Book Rating : 4.8/5 (31 download)

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Book Synopsis The Design and Application of Controlled Low-strength Materials (flowable Fill) by : Amster K. Howard

Download or read book The Design and Application of Controlled Low-strength Materials (flowable Fill) written by Amster K. Howard and published by ASTM International. This book was released on 1998 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focuses on a type of material mainly used in place of compacted backfill for pipe embedment and backfill, but gaining widely in applications. It is a mixture of cementitious material, soil, water, and sometimes fly ash and admixtures. Here 26 papers, from a June 1997 symposium in St. Louis, Missouri, describe new design procedures, new applications, and installation innovations in order to help assess the need for new or revised standards. They cover ingredients, properties, test methods, standards and specifications, case histories, and pipeline applications. The five current standards are appended. Annotation copyrighted by Book News, Inc., Portland, OR

Field Instrumentation for Soil and Rock

Author : Gary N. Durham
Publisher : ASTM International
ISBN 13 : 0803126042
Total Pages : 420 pages
Book Rating : 4.8/5 (31 download)

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Book Synopsis Field Instrumentation for Soil and Rock by : Gary N. Durham

Download or read book Field Instrumentation for Soil and Rock written by Gary N. Durham and published by ASTM International. This book was released on 1999 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: These 28 papers presented at the American Society for Testing and Materials symposium held in June 1998 are organized by the major session topics of instrumentation associated with: soil structure interaction, monitoring landfills, and monitoring settlement and stability; and field data acquisition

Concrete Pipe for the New Millennium

Author : Iraj I. Kaspar
Publisher : ASTM International
ISBN 13 : 0803126212
Total Pages : 102 pages
Book Rating : 4.8/5 (31 download)

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Book Synopsis Concrete Pipe for the New Millennium by : Iraj I. Kaspar

Download or read book Concrete Pipe for the New Millennium written by Iraj I. Kaspar and published by ASTM International. This book was released on 2000 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Innovations in Controlled Low-strength Material (flowable Fill)

Author : Jennifer L. Hitch
Publisher : ASTM International
ISBN 13 : 0803134819
Total Pages : 163 pages
Book Rating : 4.8/5 (31 download)

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Book Synopsis Innovations in Controlled Low-strength Material (flowable Fill) by : Jennifer L. Hitch

Download or read book Innovations in Controlled Low-strength Material (flowable Fill) written by Jennifer L. Hitch and published by ASTM International. This book was released on 2004 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Field Tests of Concrete Pipe Performance During Backfilling

Author : MC. Webb
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Field Tests of Concrete Pipe Performance During Backfilling by : MC. Webb

Download or read book Field Tests of Concrete Pipe Performance During Backfilling written by MC. Webb and published by . This book was released on 2000 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Full-scale field tests were conducted on the campus of the University of Massachusetts, Amherst, to evaluate the pipe-soil interactions that take place as pipes are buried and backfilled. The program included concrete, polyethylene, and corrugated steel pipe. This paper focuses on the data from the concrete pipe tests, and assesses it in light of the assumptions of the SIDD design approach adopted by ASCE and AASHTO.

Technical Manual: Plastic Pipe Used in Embankment Dams

Author :
Publisher : FEMA
ISBN 13 :
Total Pages : 317 pages
Book Rating : 4./5 ( download)

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Book Synopsis Technical Manual: Plastic Pipe Used in Embankment Dams by :

Download or read book Technical Manual: Plastic Pipe Used in Embankment Dams written by and published by FEMA. This book was released on with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Pipe Interaction with the Backfill Envelope

Author :
Publisher :
ISBN 13 :
Total Pages : 278 pages
Book Rating : 4.:/5 (1 download)

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Book Synopsis Pipe Interaction with the Backfill Envelope by :

Download or read book Pipe Interaction with the Backfill Envelope written by and published by . This book was released on 1999 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Alternative Methods to Trench Backfill

Author : Zhongjie Zhang
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.:/5 (1 download)

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Book Synopsis Alternative Methods to Trench Backfill by : Zhongjie Zhang

Download or read book Alternative Methods to Trench Backfill written by Zhongjie Zhang and published by . This book was released on 2005 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conduit structures dealing with hydraulic drainage needs in the Louisiana highway system include pipe culverts, pipe arch culverts, storm drains, sewers, etc. Although the Louisiana Department of Transportation and Development (LADOTD) has standard specifications for furnishing and installing these conduit structures to guarantee their proper functions, unexpected pavement surface dips still occur at some locations of highway cross-drain culverts and cause the deterioration of pavement ride comfort. The goal of this study was to develop recommendations for design and construction procedures to eliminate such pavement surface dips above highway culvert crossing structures. Researchers conducted a literature search and field investigation on existing pavements at various cross-drain locations with and without the pavement surface dip problem. In addition to conventional laboratory tests, full-scale trench backfill tests at the Louisiana Transportation Research Centers (LTRC) Pavement Research Facility (PRF) site evaluated different backfill materials in a controlled environment. Four construction projects accommodated field trench backfill testing sections with various backfill materials to further verify the findings obtained previously. The field testing sections used concrete pipes varied in size from 36 to 54 inches. Using different field compaction equipment and methods, the study explored and evaluated factors that influence the quality of highway cross-drain trench backfill. Relevant cost information is also included for future reference. The results from this study indicate that pavement surface dips at highway cross-drains on Louisiana highways involve many complex factors. The field probing tests revealed that the occurrence of the pavement dip depended largely on the relative stiffness of trench backfill materials with respect to their adjacent natural soils. The occurrence and magnitude of pavement surface dips depended also on other factors such as the stiffness of the pavement structure and truck traffic loading, etc. When a dip occurred at the surface, the trench backfill underneath was weaker than adjacent subgrade soils. Construction environment, contractors' workmanship, backfill materials, and compaction are the major factors controlling the quality of trench backfill compaction.

Large Diameter Steel Pipe Field Test Using Controlled Low Strength Material and Staged Construction Modeling Using 3-D Nonlinear Finite Element Analysis

Download Large Diameter Steel Pipe Field Test Using Controlled Low Strength Material and Staged Construction Modeling Using 3-D Nonlinear Finite Element Analysis PDF Online Free

Author : Franciele Bellaver
Publisher :
ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.:/5 (881 download)

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Book Synopsis Large Diameter Steel Pipe Field Test Using Controlled Low Strength Material and Staged Construction Modeling Using 3-D Nonlinear Finite Element Analysis by : Franciele Bellaver

Download or read book Large Diameter Steel Pipe Field Test Using Controlled Low Strength Material and Staged Construction Modeling Using 3-D Nonlinear Finite Element Analysis written by Franciele Bellaver and published by . This book was released on 2014 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using finite element methods and field tests, an extensive study on selected steel pipes is devised for the Integrated Pipeline Project in Dallas-Fort Worth, Texas. The project integrates Tarrant Regional Water District (TRWD) existing pipelines to the Dallas system along 150 miles. Field test of buried pipes, monitoring the pipe in different trench conditions is extremely valuable in predicting the displacement of the pipe during construction stages and during its lifetime. The field instrumentation monitors the circular displacements and strains of a buried steel pipe with an outside diameter (O.D.) of 84 in. and 0.375 in. thickness in three different trench profiles using controlled low strength material. For the first case, the trench width is the O.D. plus 36 in., and CLSM is used as embedment up to 30% of the O.D. In the second case, the trench width is the O.D. plus 36 in., and CLSM is used as embedment up to 70% of the O.D. In the third case, the trench width is O.D. plus 18 in., and CSLM is used as embedment up to 70% of the O.D. From the CLSM to the top of the pipe, ordinary local soil is used and compacted to 95% standard proctor density. Approximately 5ft. of backfilling is added for all cases. For pipe structural monitoring, strain gages are attached inside and outside of the pipe to obtain the circumferential strain, and displacement transducers are installed to record both vertical and horizontal diameter displacement. The deflections of the steel pipes are effectively measured in each of the construction stages: the CLSM embedment, the soil compaction, and during the load of the 5ft. soil on top of the pipe. In addition, the buried pipes are monitored for long term deflection (around 350 days). The tests provide guidance for the finite element modeling and are an important study in predicting the structural performance of buried steel pipes. The finite element analysis developed is a three dimensional (3D) nonlinear finite element model of steel pipe coupled with CLSM and compacted soil. The finite element model consists of the pipe and soil interaction during the staged construction of embedment and backfill. The geometry of the model is created based on the pipe's undeformed shape. Due to the effect of the loads during staged construction (i.e. subsequent layers of soil being added as embedment and/or backfill), the geometry of the pipe distored for each layer of soil around it. The model also consideres the at rest lateral pressure and the lateral effect of soil compaction on the pipe-soil structure. Different trench conditions are modeled by varying in the in-situ soil stiffness for the trench wall, and trench width. The finite element model developed simulates the load-deformation results of a buried steel pipe in different trench conditions and was verified by the field test results. After developing the nonlinear finite element model for steel pipes and verifying the results with field test, the model can be used to predict pipe performance under varying backfill and loading conditions. All parameters that are modified in the models are part of the scope of the pipeline project, and are field situations that might be observed in the construction of the Integrated Pipeline.

Specifications for Structural Concrete, ACI 301-05, with Selected ACI References

Author : American Concrete Institute
Publisher : American Concrete Institute
ISBN 13 : 0870311948
Total Pages : 660 pages
Book Rating : 4.8/5 (73 download)

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Book Synopsis Specifications for Structural Concrete, ACI 301-05, with Selected ACI References by : American Concrete Institute

Download or read book Specifications for Structural Concrete, ACI 301-05, with Selected ACI References written by American Concrete Institute and published by American Concrete Institute. This book was released on 2005 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:

ASTM Special Technical Publication

Author :
Publisher :
ISBN 13 :
Total Pages : 118 pages
Book Rating : 4.3/5 (126 download)

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Book Synopsis ASTM Special Technical Publication by :

Download or read book ASTM Special Technical Publication written by and published by . This book was released on 1961 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Transportation Research Record

Author :
Publisher :
ISBN 13 :
Total Pages : 512 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Transportation Research Record by :

Download or read book Transportation Research Record written by and published by . This book was released on 2000 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Updated Test and Design Methods for Thermoplastic Drainage Pipe

Author : Timothy J. McGrath
Publisher : Transportation Research Board
ISBN 13 : 0309117763
Total Pages : 310 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Updated Test and Design Methods for Thermoplastic Drainage Pipe by : Timothy J. McGrath

Download or read book Updated Test and Design Methods for Thermoplastic Drainage Pipe written by Timothy J. McGrath and published by Transportation Research Board. This book was released on 2009 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report contains the findings of research performed to develop a recommended load and resistance factor design (LRFD) specification for thermoplastic pipe used in culverts and drainage systems for highway structures. The report details the research performed and includes a recommended LRFD design specification, a quality assurance specification for manufactured thermoplastic pipe, and the results of supporting analyses.

Proceedings of the Indian Geotechnical Conference 2019

Author : Satyajit Patel
Publisher : Springer Nature
ISBN 13 : 9813364661
Total Pages : 715 pages
Book Rating : 4.8/5 (133 download)

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Book Synopsis Proceedings of the Indian Geotechnical Conference 2019 by : Satyajit Patel

Download or read book Proceedings of the Indian Geotechnical Conference 2019 written by Satyajit Patel and published by Springer Nature. This book was released on 2021-04-22 with total page 715 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises select proceedings of the annual conference of the Indian Geotechnical Society. The conference brings together research and case histories on various aspects of geotechnical and geoenvironmental engineering. The book presents papers on geotechnical applications and case histories, covering topics such as (i) Characterization of Geomaterials and Physical Modelling; (ii) Foundations and Deep Excavations; (iii) Soil Stabilization and Ground Improvement; (iv) Geoenvironmental Engineering and Waste Material Utilization; (v) Soil Dynamics and Earthquake Geotechnical Engineering; (vi) Earth Retaining Structures, Dams and Embankments; (vii) Slope Stability and Landslides; (viii) Transportation Geotechnics; (ix) Geosynthetics Applications; (x) Computational, Analytical and Numerical Modelling; (xi) Rock Engineering, Tunnelling and Underground Constructions; (xii) Forensic Geotechnical Engineering and Case Studies; and (xiii) Others Topics: Behaviour of Unsaturated Soils, Offshore and Marine Geotechnics, Remote Sensing and GIS, Field Investigations, Instrumentation and Monitoring, Retrofitting of Geotechnical Structures, Reliability in Geotechnical Engineering, Geotechnical Education, Codes and Standards, and other relevant topics. The contents of this book are of interest to researchers and practicing engineers alike.

Pipelines 2005

Author : American Society of Civil Engineers. Pipeline Division. Specialty Conference
Publisher :
ISBN 13 :
Total Pages : 1168 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Pipelines 2005 by : American Society of Civil Engineers. Pipeline Division. Specialty Conference

Download or read book Pipelines 2005 written by American Society of Civil Engineers. Pipeline Division. Specialty Conference and published by . This book was released on 2005 with total page 1168 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection contains more than 90 papers presented at the ASCE Pipeline Division Specialty Conference, held in Houston, Texas, August 21-24, 2005.

Numerical and Experimental Investigation of Buried Large-diameter Steel Pipes with Controlled Low-strength Material

Author : Margarita Takou
Publisher :
ISBN 13 :
Total Pages : 249 pages
Book Rating : 4.:/5 (132 download)

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Book Synopsis Numerical and Experimental Investigation of Buried Large-diameter Steel Pipes with Controlled Low-strength Material by : Margarita Takou

Download or read book Numerical and Experimental Investigation of Buried Large-diameter Steel Pipes with Controlled Low-strength Material written by Margarita Takou and published by . This book was released on 2019 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main goal of this research was to gain an in-depth understanding of the behavior of buried large-diameter pipes with controlled low-strength material (CLSM). Design equations were developed based on extensive parametric studies that aimed for an optimized design for designers in industry. Both experimental and numerical methods were espoused in the investigating procedure. The pipe-soil structure characteristics of the experimental analysis were: (a) steel pipe diameter of 108 in., (b) steel pipe thickness of 0.47 in., (c) mortar liner applied at the inner surface of the pipe with thickness of 0.5 +1/6 in., (d) CLSM applied around the pipe at a depth of 70% of the pipe's diameter, (e) selected compacted soil applied at a depth of pipe's diameter, and (f) compacted native soil with overall depth of 6 ft. applied until the ground level. The staged construction method was applied, which means that the application of each part was done in a specific order. The stages of the construction were: (a) pipe placement, (b) CLSM applied at a depth of 30% of pipe's diameter (OD), (c) CLSM applied at a depth of 70% OD, (d) compacted select fill layer applied 1 ft. above the pipe's crown, and (e) consecutive compacted soil layers of 12 in. depth until the ground level.Experimental measurements were conducted at the site to measure the deflection of the pipe during the construction stages. Two methods were applied: MOP-119 and video laser profiler (VLP) method. The MOP-119 is a method based on the ASCE Committee on Buried Flexible (Steel) Pipe Load Stability Criteria and Design of the Pipeline Division. The laser profiler method is based on a laser ring projected at the inner surface of the pipe. Due to physical obstacles inside the pipe, for this research, the VLP was modified to the photo laser profiler (PLP) method to bypass the issues raised. A Finite Element Model (FEM) was developed to mimic the experimental conditions of the pipe tested. The geometrical dimensions, boundary conditions, material properties, and construction stages were all applied based on the site conditions. A model-change algorithm was used for an accurate representation of the staged construction method. Geometry, material, and contact nonlinearities were implemented. A Newton-Raphson algorithm was used for the model convergence. Overall, 28 sections were analyzed with the FEA, and the results for the deflection at springline and invert were compared with the experimental data. The material properties of the CLSM were investigated in the Civil Engineering Laboratory (CELB) at the University of Texas at Arlington. Compression, flexure, and triaxial material tests were conducted based on ASTM D4832, C31, and D 4767, respectively. A material law was developed based on the test results. Unique design equations were developed for large-diameter steel pipes with CSLM. A total of 3500 models were run, and a regression analysis was conducted. The dependent variables were horizontal and vertical deflection, moment, thrust, and shear of the pipe; while the independent variables were pipe diameter, pipe thickness, CLSM layer height, backfill material used above the CLSM layer, trench width, and trench wall stiffness.