[PDF] Top 20 El procedimiento precontractual de licitación en la Ley Orgánica del Sistema Nacional de Contratación Pública

... granulated blast furnace slag (GGBS) hardens very slowly and, for use in concrete, it needs to be activated by combining it with Portland ...concrete properties. The compressive strength of ... See full document

... Compressive properties of the synthesized alloy and composites can be understood by studying the load-dis- placement ...compression testing; and Figure 19 shows the influence of the reinforcement on the ... See full document

... Three concrete prisms of cross-section 100 9 100 mm 2 and length 400 mm were used for each variable in tests of flexural properties. To minimize the effects of eccentricities, all specimens were rotated 90° from ... See full document

... steel slag is broadly divided into blast-furnace slag (BFS) and steel ...either blast-furnace slag (BFS), a glass form that is quenched or air-cooled ... See full document

... ABSTRACT: Blast furnace slag material is a co-product of the iron manufacturing ...The slag material is formed when the lime in the flux chemically combines with the silica and alumina of the ... See full document

... engineering properties of the slag material are largely determined by the rate at which the molten slag material is ...Granulated slag, the non-metallic, glassy, sand-like material, is ... See full document

... use. Blast Furnace Slag is a non-metallic product consisting essentially of Silicates and Alumino silicates of calcium's developed simultaneously with iron in a blast furnace and is ... See full document

... refractory furnace linings and quality foundry coke are used, the amount of slag generated would increase as these parameters directly impact on slag generation and its quality ...Currently, ... See full document

... In this study we would like to determine the factors (sample ingredients) that affect certain responses (mechanical, environmental and economic metrics). We are interested in finding out how different amounts of ... See full document

... The characteristic of GGBS was examined using particle size analyzer, X-ray diffraction (XRD) and chemical analysis tests. Table 1 shows the physical and chemical properties, whereas Figs. 1 and 2 show the ... See full document

... K. GANESH BABU et al [3]: aimed to quantify the 28-days cementitious efficiency of ground granulated blast furnace slag (GGBFS) in concrete at the various replacement levels. From the results of the ... See full document

... the slag based cement ...the blast furnaces slag based cement ...activates slag but the situation can also be re- versed and slag itself and its minor components may have a big ... See full document

... any properties are ...granulated blast furnace slag (GGBS) on fresh properties of concrete by imparting it in a various proportions of 9% and 14% which is used as mineral admixtures ... See full document

... Rotary furnace: A 1.5-m diameter, 2 m long rotary furnace is manufactured by Monometer ...The furnace is equipped with 70 L/h gasoil ...the furnace; therefore, it rotates at a constant speed ... See full document

... Mohd. Nadeem Qureshi, M.E. (Civil) is working as a senior lecturer in Civil Engineering Department, Government Polytechnic, Khamgaon. (M.S), India. He is presently pursuing Ph.D in the field of ‘Alkali-activated ... See full document

... the slag viscosity with increasing MnO ...BF slag viscosity decreases with increasing FeO content for a fixed CaO/ SiO2 ...the slag basicity as well as the Si content in the metal can be minimized by ... See full document

... 5. Report No T(S) 006 January 2005 Use of higher volume fly ash in concrete for building sector CBRI Roorkee. Seshagiri in low cost building technologies” J.N.T.U.College of Engineering, Anantapur 1998 ASTM C 989 ... See full document

... by testing a cube of size 70.6mm in Universal Testing Machine at uniform rate of loading starting from zero to 35 N/mm 2 /min as per IS: 4031(Part VI) - ... See full document

... The water absorption tests on aggregate reflect the porosity and found that porosity of the aggregate decreased with the addition of binder material in fly ash. It can be noted from the test results that the water ... See full document

... ground blast furnace slag were prepared to produce mixes 20 MPa compressive ...of furnace slag and all specimens were weighed to calculate density [15] and unit weight of concrete [16], ... See full document