Author: Highway Innovative Technology Evaluation Center (U.S.)
Publisher: ASCE Publications
ISBN: 9780784474044
Category : Technology & Engineering
Languages : en
Pages : 60
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Book Description
Prepared by the Highway Innovative Technology Evaluation Center, a CERF Service Center. This report describes a HITEC evaluation designed to determine the basic capabilities and limitations of the Model 4430 gauge, manufactured by the Troxler Electronic Laboratories,Øfor use in quality control and quality assurance procedures for concrete construction. The ratio of water to cementitious materials in a concrete mix is recognized as a prime determinant of the strength and ultimate durability of the concrete. The Model 4430 Nuclear Water/Cement Ratio Gauge is designed to measure the water-to-cement ratio in fresh concrete sequentially. The evaluation was carried out in four phases: computer simulations, laboratory testing,precision and bias evaluation, and field demonstrations.
Author: Highway Innovative Technology Evaluation Center (U.S.)
Publisher: ASCE Publications
ISBN: 9780784474716
Category : Technology & Engineering
Languages : en
Pages : 152
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Book Description
Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF service center. This report describes a HITEC evaluation designed to determine the basic capabilities and limitations of the MSE Plus System, manufactured by SSL, LLC, for use as a mechanically stabilized earth retaining system. The evaluation was conducted based on material, design, construction, performance, and quality assurance information outlined in the HITEC Protocol. TheØMSE PlusØSystem features rectangular segmental precast concrete facing panels and galanized welded wire, grid-type soil reinforcement.
Author: Highway Innovative Technology Evaluation Center (U.S.)
Publisher: ASCE Publications
ISBN: 9780784474648
Category : Technology & Engineering
Languages : en
Pages : 128
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Book Description
Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF Service Center. his report summarizes the results of an evaluation that was designed to test the performance of 11 seismic isolators and dampers. The devices were tested for stability, response during earthquake simulations, and fatigue and weathering effects.
Author: Highway Innovative Technology Evaluation Center (U.S.)
Publisher: ASCE Publications
ISBN: 9780784474808
Category : Technology & Engineering
Languages : en
Pages : 82
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Book Description
Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF service center. This report presents the results of a detailed evaluation ofØthe MX 30 pavement marking 30-meter retroreflectometer. The evaluation is designed to test the measurement bias, repeatability, and reproducibility of handheld and mobile retroreflectometers produced by several manufacturers.
Author: Highway Innovative Technology Evaluation Center (U.S.)
Publisher: ASCE Publications
ISBN: 9780784474631
Category : Technology & Engineering
Languages : en
Pages : 44
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Book Description
Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF Service Center. This report summarizes the results of a detailedØevaluation of a viscous damper,Ømanufactured by Enidine, Inc. The report is part of a program to test the performance of 11 seismic isolators and dampers produced by several manufacturers. The devicesØwere tested for stability, response during earthquake simulations, and fatigue and weathering effects.
Author: Highway Innovative Technology Evaluation Center (U.S.)
Publisher: ASCE Publications
ISBN: 9780784474495
Category : Technology & Engineering
Languages : en
Pages : 158
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Book Description
Prepared by the Highway Innovative Technology Evaluation Center, a CERF service center. This report presents the results of a HITEC evaluation of the Isogrid Retaining Wall System, designed and developed by the Neel Company. The report describes the basic capabilities and limitations of the Isogrid System for use as a technically viable precast, mechanically stabilized earth retaining wall system. The evaluation was conducted based on material, design, construction, performance, and quality assurance information outlined in the HITEC Protocol. The Isogrid System features a diamond-shaped, segmental precast concrete facing panel with weep holes where four panels intersect and welded wire, grid-type soil reinforcement attached to the center of each facing panel.
Author: Highway Innovative Technology Evaluation Center
Publisher: ASCE Publications
ISBN: 9780784474587
Category : Technology & Engineering
Languages : en
Pages : 44
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Book Description
Prepared by the Environmental Technology Evaluation Center (EvTEC) and the Highway Innovative Technology Evaluation Center (HITEC), CERF Service Centers. This report provides an update on technology and is intended to assist the Federal Highway Administration's Priority Technology Program (PTP) and departments of transportation in all 50 states. It identifies barriers that hinder the widespread use of bioremediation in the highway environment, as well as methods to overcome these barriers. The evaluation is based on design, construction, performance, and quality assurance information outlined in the HITEC and EvTEC Protocols. The three case studies examine PTP projects in Alabama, Indiana, and Mississippi.
Author: Environmental Technology Evaluation Center (U.S.)
Publisher: ASCE Publications
ISBN: 9780784474754
Category : Technology & Engineering
Languages : en
Pages : 60
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Book Description
Prepared by the Environmental Technology Evaluation Center (EvTEC), a CERF Service Center. This report describes the nature and scope of an environmental evaluation of ThermoEnergy Corporation's Ammonia Recovery Process (ARP) System, a method for recycling ammonia in wastewater. The data in this report were collected over a three-month pilot study.ØTests found that the ARP system is capable of removing 75?99% of the ammonia in the waste stream in a domestic wastewater treatment plant. The ARP System uses a series of absorption, evaporation, and crystallization steps to convert ammonia in wastewater into a commercial fertilizer, ammonium sulfate. The evaluation results clearly indicate that the ARP process is capable of achieving significant ammonia reduction under a range of environmental conditions
Author: Amy M. Dowell
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 52
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Book Description
Author:
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 594
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Book Description
