THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON

The Design and Analysis of Experiments

This report presents information on the characterization of cementitiously stabilized layers and the properties that influence pavement performance. It also contains recommended performance-related procedures for characterizing these layers and performance-prediction models for incorporation into the mechanistic–empirical pavement analysis methods. Individual chapters highlight pavement distresses of hot-mix asphalt pavements and concrete pavements, laboratory tests and model development, and model calibration. The material contained in the report will be of immediate interest to state materials, pavement, and construction engineers and others involved in the different aspects of pavement design and construction.

Characterization of Cementitiously Stabilized Layers for Use in Pavement Design and Analysis

Modelling the linear viscoelastic rheological properties of bituminous binders

Application of rejuvenators to improve the rheological and mechanical properties of asphalt binders and mixtures: A review

A review on solutions for improving rutting resistance of asphalt pavement and test methods

Laboratory evaluation of warm mix asphalt incorporating high RAP proportion by using evotherm and sylvaroad additives

Foamed bitumen stabilization is burgeoning steadfastly and internationally. Although it involves higher initial material costs than cement or lime stabilization, it offers the advantages of being free from transverse shrinkage cracking and of being a fast technique that minimizes traffic delays. This work forms part of a larger project aimed at investigating the feasibility and potential applications of the foamed bitumen stabilization technique to speed its adoption in New Zealand. In this research, the foaming characteristics of two sources each of two grades of bitumen currently in use in New Zealand are presented. The effect of bitumen source and grade and the type of fines were studied. Fly ash Type C was used to modify the aggregate gradation to adjust the percentage of the fine fraction (passing the 75μm sieve). Portland cement was used at 2% by the dry weight of aggregates as a partial replacement for the fly ash. The foamability results for each source were quite different. For each source, the s...

New Zealand Experience with Foam Bitumen Stabilization

The use of foamed-bitumen stabilization technique is growing steadfastly and it is gaining wide spread acceptance in many different countries. This technique is new to New Zealand and it just has started to achieve some acceptance within the highway construction industry. In the first part of this work, bitumens from seven different bitumen sources were collected and examined. Three sources that are currently used in New Zealand, three bitumens are from three sources in California in the US, and one source is imported from Australia. The physical properties of bitumens such as penetration, viscosity and softening point, in addition to foamability tests were carried out on these bitumens samples in order to examine the effect of bitumen source, grade and bitumen rheology on the characteristics of the resulting foam. Mixes with similar gradation were prepared with the foam bitumen resulting from the different grades and sources were subjected to resilient modulus tests to examine the mechanical properties, ...

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Mofreh Saleh

Papers

Laboratory evaluation of warm mix asphalt incorporating high RAP proportion by using evotherm and sylvaroad additives

New Zealand Experience with Foam Bitumen Stabilization

Effect of Rheology on the Bitumen Foamability and Mechanical Properties of Foam Bitumen Stabilised Mixes

Effect of rejuvenator and mixing methods on behaviour of warm mix asphalt containing high RAP content

Effects of specimen size and loading conditions on the fracture behaviour of asphalt concretes in the SCB test