Concrete Properties Comparison When Substituting a 25% Cement with Slag from Different Provenances

Abstract

Concrete consumption greatly exceeds the use of any other material in engineering. This is due to its good properties as a construction material and the availability of its components. Nevertheless, the present worldwide construction increases and the high-energy consumption for cement production means a high environmental impact. On the other hand, one of the main problems in the iron and steel industry is waste generation and byproducts that must be properly processed or reused to promote environmental sustainability. One of these byproducts is steel slag. The cement substitution with slag strategy achieves two goals: raw materials consumption reduction and waste management. In the present work, four different concrete mixtures are evaluated. The 25% cement substitution is carried out with different types of slag. Tests were made to evaluate the advantages and drawbacks of each mixture. Depending on the origin, characteristics, and treatment of the slag, the concrete properties changed. Certain mixtures provided proper concrete properties. Stainless steel slag produced a fluent mortar that reduced water consumption with a slight mechanical strength loss. Mixtures with ground granulated blast furnace slag properties are better than the reference concrete (without slag).

Advances in the Analysis of Properties Behaviour of Cement-Based Grouts with High Substitution of Cement with Blast Furnace Slags

“…Two Portland Cement (CP) has been used: CEM I 42.5 and CEM I 52.5 R (UNE-EN 197-1) [30], with density: 3.13 g/cm 3 . The slag used has been GGBFS from a well-known origin and produced good results in concrete tests with low percentage substitutions [9]. Some of its properties are density 2.95 g/cm 3 and specific surface area 4500-4700 cm 2 /gr.…”

“…The last objective is to improve their use to obtain 100% recyclables materials. It supposes considerable benefits as reducing construction cost, the need for landfill sites, or their disposal in the river system [8].In a previous paper, results were presented with this methodology applied for concrete specimens [9]. In that work, with 25% of cement substitution, the importance of the origin of the slag used were studied.…”

“…In a previous paper, results were presented with this methodology applied for concrete specimens [9]. In that work, with 25% of cement substitution, the importance of the origin of the slag used were studied.…”

Mechanical-strength characteristics of concrete made with stainless steel industry wastes as binders

“…Another of the materials used as addition and stabilization of materials is the slag electric arc furnace in which the material acquires great importance in the recovery of waste [11][12][13][14][15].…”

Use of Industrial Waste Slag in Alkali-Activated Slag Ceramsite Concrete Hollow Blocks

“…The slag has been used in the past as a substitute for Portland cement in concrete production due to its latent hydraulicity [3]. The workability and mechanical performance of concrete with slag cement (with the content of slag used as 25% replacement of the weight of the cement) were investigated by Parron-Rubio et al [4]. Berndt [5] studied the chloride diffusion, sulfate resistance, and permeability of the concrete mixed with slag as the replacement for cement.…”