... can be attributed to differences in finishing effort or timing of finishing, or both. 23 12 2003 02 07 2004 freeze-thaw supplementary cementing materials fly ash slag ASTM C 672 finishing bleed set time References Bouzoubaa , N. , Bilodeau...

...LJ Struble; PC Taylor; JT Conway A testing program has been initiated to measure and compare the performance in concrete of two hydraulic cements. Both meet the prescriptive specification for portland cement; one cement is a mixture of 98% portland cement and 2% slag, and the other is a similar...

...DS Lane; HC Ozyildirum The effects of portland cement alkali content, and replacement of portland cement with Class F fly ash, slag, or silica fume on alkali-silica reactivity (ASR) were studied by measuring the expansion of mortar bars made with Pyrex glass and stored over water at 38°C...

... for ASR-resistant concrete. ASTM C 441 uses Pyrex glass aggregate in mortars to accelerate the testing and provides reliable results in 2 months. It can be used to evaluate the effectiveness of pozzolans and ground slag to prevent expansions, as well as the effect of portland cements on the reaction...

... such as fly ash, slag, silica fume and natural pozzolans have been tested at different replacement levels in combination with various reactive aggregates including siliceous limestone, greywacke, granite and sandstone. Results are presented for 70 different material combinations tested by both the accelerated...

... to mass concrete. The rate and amount of expansion of cements containing magnesia depend on many factors including the quantity, fineness and calcination temperature of magnesia, cement constituents and strength, presence of mineral admixtures such as fly ash and slag, and storage or service conditions...

...-granulated blast-furnace slag. The results show that as the temperature increases, the initial and final setting times decrease for all types of concrete, with fly-ash concrete having the longest setting times. At high temperatures, slag concrete has shorter setting times than Type I cement concrete...

...W Ma; D Sample; R Martin; PW Brown The hydration behavior of blended cements containing fly ash, silica fume, and granulated blast furnace slag over the temperature range of 10 to 55°C was studied by isothermal calorimetry. The rates of heat evolution during the first 24 h of hydration were...

...RE Richter; TS Poole Problems were encountered in the use of the reference method as given in ASTM Test Methods for Chemical Analysis of Hydraulic Cement C 114 for chemical determination of iron in certain cementitious materials including pozzolans, slags, and blended cements. Investigational work...

... with pozzolans or slags in producing a sulfate-resisting cement mortar. This paper is a summary of three cooperative interlaboratory testing programs conducted by ASTM Subcommittee C01.29 on Sulfate Resistance with the aim to develop a performance test method and establish its precision. Parallel...

...S Sarkar; P-C Aitcin; H Djellouli A very high-strength concrete ( W/C = 0.20) containing 10% silica fume, 30% slag replacement for cement, and a high-range water-reducing admixture attained a compressive strength of 94 MPa at 28 days. The microstructural development of this concrete was studied...