Evaluation of High Strength Concrete by the Break-Off Method
The reliability of the Break-Off method to test inplace high-strength concrete is investigated. A total of 188 Break-Off tests and 30 standard cylinder tests are carried out for this project....
Natural Aggregates in Structural Lightweight Concrete
Pumice and scoria have been used in structural concrete since the days of the Roman Empire. Records for the past five decades show minimal use of these materials in structural concrete...
Use of Copper Slag for Construction Purposes
Standard laboratory test results on the fine- and coarse-grained fractions of a copper slag have been presented. Based on the results of these tests, the possible use of the fine fraction...
Lunar Cements/Concretes for Orbital Structures
The lunar surface is a rich source of inorganic building materials for large space structures. Lunar anorthosites can be processed into calcium aluminate cements in high temperature, high...
Segregation of Sediment During Deposition
A laboratory experiment was conducted to investigate the segregation of sediment during deposition. Sediment eroded from an upslope source area of Blount silt loam was introduced to a...
Computer Assisted Pavement
In Rancho Palos Verdes, Calif. a 4,300 ft. long test installation of the Contained Rock Asphalt Mat (CRAM) Pavement System is expected to have a 50 year life. It cost a third less than...
Construction of Middle Fork Dam
Recently there has been increased interest in roller compacted concrete (RCC) for use in dams. However, to date there has been very little practical experience in construction. Middle...
In-Plane Composite Drains
Drainage of water from outside basement walls, behind retaining walls, or highway cut or fill slopes, has long been a problem. A common solution is the aggregate drain. Often, installation...
Use of LP: An Aggregate Blending Example
The use of well known linear programs which in the past were largely confined to relatively limited mainframe usage, for the management of engineered construction is explored using a well...
Lightweight Fill Helps Albany Port Expand
Lightweight aggregate was used as a soil fill in the reclamation of a marine terminal at the Port of Albany, New York in order to stabilize the dockside area. Gravel-filled steel sheet...
Concrete-pavement Recycling could Slash Rehab Costs 30%
During the past few years, the recycling of highway pavements, especially asphalt pavements, has been in the news. Yet one promising development has drawn little attention: the recycling...
Sand and Gravel � Don't Take Them for Granted
One assumes the supply of sand and gravel is inexhaustible. In fact, at certain times and places it is not. At least not at today's relatively low prices. This is particularly...
Filter Fabrics: Growing Use in Road and Highway Construction
Filter fabrics are seeing increasing use in road and highway construction; and promise to see greatly expanded use in the near future. A rapidly growing use is in constructing longitudinal...
Mathematical Model for Aggregate Plant Production
The objective of this model is to be used to evaluate the production characteristics of an aggregate processing plant. The model is intended for practical application by industry personnel...
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