Petrographic and Mechanical Characteristics of Concrete Produced by Different Type of Recycled Materials

Abstract

This paper examined three different types of recycled materials, such as beer green glass, waste tile, and asphalt, which will be used in different mixtures in order to prepare concrete specimens and, more specifically, their effect on concrete strength and how the petrographic characteristics of various recycled materials influenced the durability of C25/30 strength class concrete. Particular emphasis was placed on the effect of artificial microroughness of glassy and smooth surfaces of recycled materials on their final concrete strength. The concrete strength values do not show great variance, but their limited differences have been qualitatively interpreted by a new promising petrographic methodology, including the study of the surface texture of the used aggregate materials. Concretes are produced with constant volume proportions, workability, mixing, and curing conditions while using different sizes of each aggregate type. The aggregates were mixed both in dry and water saturated states in concretes. Concretes that are made by a mixture of beer green glass with quartz primer, as well as of tile with quartz primer, presented the optimum possible results of the compressive strength.

Petrographic Characteristics of Sandstones as a Basis to Evaluate Their Suitability in Construction and Energy Storage Applications. A Case Study from Klepa Nafpaktias (Central Western Greece)

“…These satisfactory strength results may attributed to the generally high microtopography of coarse-grained, medium-grained, as well as of fine-grained sandstones relative to the microtopography of other used rocks [22] (Figure 2b,d,f,h and Figure 4). The microtopography of the aggregates constitutes a crucial factor for the mechanical quality of the aggregate rocks and consequently for the quality of the produced concrete as it influences the cohesion and the bonding between the cement paste and the aggregate particles [1,22,23]. The only studied concrete specimen that displays lower strength (25 MPa) than the standard states is the specimen in which the used aggregate was the enriched in carbonate fossils coarse grained sandstone (Figure 2c).…”

“…Applied petrography constitutes an essential tool for the assessment of natural rocks or recycling materials for different useful applications such as concrete and energy storage. Petrography, generally, using a combination of methods such as microscopic observations (polarizing and scanning electron microscope) and chemical analysis examines the nature of each given rock/material showing the main relationship of texture, structure, composition and alteration degree [1][2][3][4][5][6][7][8][9]. Through these relationships, petrography may explain the physicomechanical and physicochemical properties of materials/rocks as well as the relationships among them.…”

Influence of the Aggregate Surface Conditions on the Strength of Quick-Converting Track Concrete

“…Choi et al [19] revealed that the aggregate coated with inorganic powder strengthens the interfacial transition zone, thereby preventing micro-cracking and improving the mechanical performance of the concrete. Petros et al [20] investigated the effects of three types of recycled materials (beer green glass, waste tile and asphalt) on concrete strength. In addition, the effects of beer green glass with quartz primer and waste tile with quartz primer on the concrete were studied.…”

Experimental Investigations on the Performances of Composite Building Materials Based on Industrial Crops and Volcanic Rocks

“…Different natural and traditional resources such as straw bale [2], hemp [3], flax [4], cob [5], sheep wool [6] and so forth are reconsidered as building materials. Moreover, new composite materials based on waste, such as glass [7,8], rubber [9] and so forth, have been studied and investigated. The use of the hemp shiv as a raw building material is not new; it was rediscovered after 1990 [10].…”