Strength and abrasive properties of andesite: relationships between strength parameters measured on cylindrical test specimens and micro-Deval values—a tool for durability assessment

Abstract

Aggregates are necessary materials for the construction industry. Owing to their favourable properties, andesites are frequently used rock materials; hence, the investigation of their mechanical and aggregate properties has great significance. This paper introduces the analyses of 13 Hungarian andesite lithotypes. The samples were collected from six andesite quarries in Hungary. Cylindrical specimens and aggregate samples with 10.0/14.0-mm-sized grains were made from rock blocks. The specimens were tested in dry, water-saturated and freeze–thaw subjected conditions. Bulk density, uniaxial compressive strength, modulus of elasticity, indirect tensile strength and water absorption were measured. The abrasion resistance was tested by micro-Deval tests. The flakiness indexes of the samples were also measured. The data set of the laboratory test results provided input for further, one- and two-variable statistical analyses. According to the test results, there is no significant difference between the strength parameters measured in water-saturated and in freeze–thaw subjected conditions. The correlation and regression analyses revealed relationships between some rock mechanical parameters, as well as between micro-Deval coefficient and uniaxial compressive strength.

Wear and Fragmentation Resistance of Mineral Aggregates—A Review of Micro-Deval and Los Angeles Tests

“…research into aggregate wear and fragmentation resistance tests address issues of mutual relationships and correlations between aggregate properties [3,11,14,[39][40][41][42][43][44][45][46][47][48][49][50][51][52].…”

“…The review results also suggest that the mineral composition, structure, and size of mineral components definitely have a significant influence on the resistance to wear and fragmentation. Interestingly, the majority of publications related to research into aggregate wear and fragmentation resistance tests address issues of mutual relationships and correlations between aggregate properties [ 3 , 11 , 14 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 ].…”

“…The influence of high porosity on faster fragmentation in the LA test was also confirmed by Adomako et al [ 6 ], Kahraman and Fener [ 59 ], and Khaleghi Esfahani et al [ 85 ]. In addition, Czinder and Török [ 3 ] and Ugur et al [ 52 ] stress that the mechanical parameters of rock materials show a high correlation with their bulk densities.…”

“…Czinder and Török [ 3 ], Capik and Yilmaz [ 41 ], Hydzik-Wiśniewska and Bednarek [ 46 ], Török and Czinder [ 50 ], Tuncay et al [ 51 ], Ugur et al [ 52 ], and Török [ 86 ] conducted their research on aggregates from various sources. Based on the obtained results, they demonstrated a strong correlation between the resistance to fragmentation and the resistance to wear, as well as between the resistance to fragmentation or wear and the resistance to compression.…”

“…Mineral aggregates are among the most important raw materials mined worldwide and also among the materials most frequently used in civil engineering [ 1 , 2 , 3 , 4 , 5 ]. Adomako et al [ 6 ] observe that crushed stones account for nearly 50% of aggregate production in Europe.…”