...-based S/S mixtures and the level of improvement afforded by additives such as fly ash and organoclays. The objective of this study is to examine the sorption levels of naphthalene to several cement-treated soil mixtures with and without organic additives (i.e., fly ash and organoclay) using batch...

...Steven Roy Butler An investigation into the field tests used to test for ammonia in fly ash was conducted for comparison to the ASTM C311-07 ammonia determination by the ion selective electrode (ISE) test method. “Ammonia tube result” (ATR) refers to a Gastec tube reading on trapped gas over...

...Tarunjit S. Butalia; James Kirch The objective of this study was to demonstrate the use of Class F coal fly ash in combination with lime or lime kiln dust (LKD) in full depth reclamation (FDR) of failing asphalt pavements. Full-scale test sections (about 4 miles in length) of two structurally...

...Pranshoo Solanki; Naji Khoury; Musharraf M. Zaman A laboratory study was conducted on both raw and stabilized clay specimens to evaluate short- and long-term performance of three different additives, namely, hydrated lime, class C fly ash (CFA), and cement kiln dust (CKD), for providing better...

... Available online at www.astm.org Nathan J. Harris,1 Kenneth C. Hover,2 Kevin J. Folliard,3 and M. Tyler Ley4 The Use of the Foam Index Test to Predict Air-Entraining Admixture Dosage in Concrete Containing Fly Ash: Part III Development of a Standard Test Method: Proportions of Materials ABSTRACT: The foam...

...Nathan J. Harris; Kenneth C. Hover; Kevin J. Folliard; M. Tyler Ley Foam index tests can be used to predict the air-entraining admixtures dosages for concrete containing fly ash. No industry-accepted foam index test standard exists and widely different methods have been used in research...

... index test results. Recommendations for a standard test are proposed. air-entrained concrete air-entraining admixtures fly ash foam index quality control References Dodson , V. H. , Concrete Admixtures , Van Nostrand Reinhold , New York , 1990 . Manz , O. E. , “ Coal...

...JM Fox; PT Miller Research was undertaken using thin sections and immersion mounts with the objective of using a modified line count procedure for the quantitative petrographic determination of fly ash and ground-granulated blast furnace slag (GGBFS) in hardened concrete and blended cements...

...S Zhang; K Wang The air void analyzer (AVA) was used to investigate the effects of concrete materials and mixing procedures on air void characteristics of fresh concrete. Twenty-seven batches of concrete were made with three mix proportions (with and without Class C fly ash or water reducer...

...JI Bhatty, Ph.D.; J Gajda, PE; F Botha, Ph.D.; MM Bryant, PG This paper describes the high-volume use of fly ash as a raw material in the manufacture of Portland cement. This approach provides three critical benefits to cement manufacturing and the environment. First, being rich in silica, alumina...

...NJ Harris; KC Hover; KJ Folliard; T Ley The loss on ignition (LOI) test as an indicator of carbon content in fly ash is a useful screening tool for fly ash for use in concrete. Despite the importance and relevance of the LOI test, the LOI test results are sensitive to procedural variations...

...P Fernandez, B.S. This paper describes the steps taken from development to full implementation, of the three most used concrete mixes, replacing 20% of the cement with ASTM-618 class C fly ash. A testing program was developed to identify the most critical variables that affect the performance...

... concrete petrographers. The equation is equally effective for portland cement concrete and concrete containing fly ash. In addition, the effect of fly ash, and the traditional method for estimating the cementitious materials content are further discussed. Derek X. Cong, Ph.D.1 Journal of ASTM International...

... (portland cement and fly ash content) are illustrated. Directions for future work are also discussed. References Mayfield , B. , “ The Quantitative Evaluation of the Water/Cement Ratio Using Fluorescence Microscopy ,” Mag. Concrete Res.   0024-9831 , Vol. 40 , No. 150 , 1990 , pp. 45 - 49...

...TR Naik; RN Kraus; BW Ramme; Y-M Chun Laboratory mixtures, pilot mixtures, and field construction mixtures were made to evaluate salt-scaling resistance of concrete incorporating large amounts of either Class C fly ash obtained from several different sources or Class F fly ash. The laboratory...

...WF Cowen A simple method is described for analyses of sulfite and sulfate, in cogeneration plant fly ash/bottom ash from a coal-fired circulating fluidized bed (CFB) steam-electricity cogeneration process. Ash is shaken for 3 h (room temperature) in 3 mM disodium EDTA solution...

... different types of mineral admixtures. One Class F fly ash, one Class C fly ash, and one ground granulated blast furnace slag (GGBFS) was added in various % volumetric replacement levels. Expansion measurements were taken and investigated with expansion criteria recommended from past experience...

... to achieve adequate flow primarily is a function of the bentonite content of the foundry sand. In general, as the bentonite content of the foundry sand increases, the water content of the mixture should increase correspondingly. The amount of fly ash has only a modest effect on the amount of water required...

... were a silty sand, and a flowable fill made with Type F fly ash. Our work also examined the susceptibility of these materials to frost heave and thaw weakening. An apparatus and standard test method for performing permeability during freezing and after subsequent thawing did not exist. We developed...