Study on mechanical properties of mortars containing steel shot and sea sand as fine aggregate replacement

H Cabrera,M Murillo,C Pacheco-Bustos,C Daza

doi:10.1088/1757-899x/1126/1/012003

H Cabrera, M Murillo + Show 2 more

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https://doi.org/10.1088/1757-899x/1126/1/012003

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Abstract

In this study, the use of solid waste known in the metallurgical market as steel shot that is generated in the production of metallic elements has been analyzed. Normally the destination of this solid waste is the sanitary landfills of the cities or the security cells since it is classified as hazardous waste. In addition, the use of materials with high availability and that were not previously used in the construction industry, such as sea sand was used in the manufacture of mortar cubes as a fine aggregate. A granulometric analysis of each of the filling materials followed by the casting of 63 mortar cubes with four different fine aggregate replacement ratios (0%, 30%, 70% and 100%) were carried out. After the curing period, the compressive strength and the weight of the resulting mortars have been determined. The results from this study indicated that by completely replacing the fine aggregate with the steel shot waste the density and the compressive strength of the resulting mortars were increased, which indicates that this new material can be used in the construction industry.

Highlights

The increase in the number of inhabitants worldwide, as well as the development of industrialization processes, mainly in the developed countries, which generate a high demand for raw material to maintain its production and commercialization processes [1], brings with it the increase of waste production and exploitation of natural resources to meet the basic needs generated by the high demand for new infrastructure [2]
The results from this study indicated that by completely replacing the fine aggregate with the s teel shot waste the density and the compressive strength of the resulting mortars were increased, which indicates that this new material can be used in the construction industry
3.1 Granulometric analysis The graphs related to the granulometry of the fine materials and the residue used for the elaboration of the mortar cubes according to ASTM C109M [21] are presented in Figure 2, to calculate the fineness modulus of each material and corroborate that the values obtained are within the range established by ASTM C33 [22]

Summary

Introduction

The increase in the number of inhabitants worldwide, as well as the development of industrialization processes, mainly in the developed countries, which generate a high demand for raw material to maintain its production and commercialization processes [1], brings with it the increase of waste production and exploitation of natural resources to meet the basic needs generated by the high demand for new infrastructure [2]. The construction of new structures to meet the basic needs of the growing population, such as housing, brings with it an increase in the exploitation of natural resources, which generates an accelerated reduction of their availability in the environment. Current constructions are made of different types of materials, with concrete and mortar being the most widely used mixtures worldwide, becoming the second most consumed element on the planet, after water [3].

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