The aim of this study is to understand the strength behaviour and fragment size of rocks during indirect, quasi-static and dynamic tensile tests. Four rocks with different lithological characteristics, namely: basalt, granite, sandstone, and marble were selected for this study. Brazilian disc experiments were performed over a range of strain rates from ~ 10–5 /s to 2.7 × …
The accurate determination of uniaxial compressive strength (UCS) plays a vital role in the initial design phase of rock engineering and rock geotechnics. Traditionally, this assessment entails costly, time-intensive and labor-demanding experimental tests. Consequently, there is significant promise in exploring machine learning techniques for UCS prediction, …
Cubic specimens of three rocks—granite, marble, and sandstone, representing very strong rock, moderately strong rock, and weak rock, respectively—were tested under polyaxial stress. The …
Rock fractures often occur in the coexisting compressive–tensile stress state. However, the influencing rules of compressive stress on the tensile strength and fracture behaviour under the condition of confined direct tension are still unclear. In this study, with the help of auxiliary equipment installed in a triaxial compressive cell, confined direct tensile tests …
cutting and grinding processes of granite stone. During ... effects on concrete tensile strength. Abd Elmoaty and ... The mortar cube of size 70.6mm x 70.6mm x 70.6
The cement strength is affected by its particle size, the range of 3–30 µm is responsible for its strength, and particles>60 µm have a filling effect and make no practical contribution to strength development [54], [56]. Hence, type C powder, which had a similar particle size as cement, hindered the interaction between cement particles.
Increasing normal stress also suppresses the dilation of granite rock bridges, but has a different effect on marble rock bridges, which also suggests the effect of lithology on failure modes.
High temperature may cause damage to microstructure of rock, which has a significant effect on rock behavior. In this study, the changes in tensile strength and brittleness of sandstones and granites with temperature and corresponding mechanisms are summarized and analyzed based on an extensive review of literature. The results show that as thermal treatment temperature …
1. Introduction. For the granite production and consumption, China has been one of the main countries in the world. The gross production of granite slabs amounts to 730 million square meters in 2016 [1].Being ∼60% of the granite blocks, granite wastes should be properly disposed to prevent the environmental pollution and health hazards [2, 3].The reutilization of …
Granite with Kyanite: Ddisplay's blue Kyanite crystals provide harmony, effective communication, and alignment while amplifying Granite's energy. These gems promote self-expression, intuition, and emotional balance. Granite with Garnet: Adds a touch of deep red or burgundy color. Garnet stimulates passion, creativity, and energy flow.
Fig. 3 shows that there is an evident mass and color change in the granite samples when they are exposed to different temperatures, especially above 300 °C. The mass loss level of the granite samples after heat treatment can be calculated by using Eq. (1): (1) ζ = m 0 − m m 0 × 100 % where ζ is the mass loss level, m 0 is the mass before thermal treatment, and mis the …
This model explains some aspects of the mechanical behavior of granite: (a) Spalling of granite laminae without buckling processes; (b) Consequences of the destruction of crack face irregularities; (c) Effect of the grain size in the compressive strength.
To understand the effect of high temperature on limestone physical and micro-structural properties, five types of tests are systematically conducted: (1) Samples were weighed after heating using HTP-312 high-precision electronic balance, manufactured by Shanghai Hochice Electrical Appliance Co., Ltd. (Fig. 1c).The electronic balance has a measurement …
Two examples of long stone beams can be found in ancient Egyptian constructions, namely, the relieving-complex above the King's chamber in the great Pyramid (with several granite beams spanning more than 5 m), and the great lintel-blocks of the Nectanebo II gateway at Karnak (with sandstone architraves spanning more than 7 m, Fig. 1).In both cases, a …
With the aim of continuing previous research on intact granite rocks, the authors have carried out sets of 25 stress-strain triaxial compressive tests on 1 sub-vertical and 2 sub …
In solid mechanics, the size effect is known as the effect of a characteristic size of a structure, on its nominal strength, when geometrically similar structures are compared (Bazant 1999). The value of flexural strength (in MPa) is a function of the specimen thickness ( h ), the width ( b ) and the span length ( l ) all in mm, as in the ...
Effect of Grain Size on the Dynamic Flexural Tensile Strength of Granite: Insight from GBM3D-PFC Simulations ... D., E. Cadoni, A. Prota, and G. Manfredi. 2009. "Dynamic behavior of a Mediterranean natural stone under tensile loading." Int. J. Rock ... J., L. N. Y. Wong, and C. I. The. 2017a. "Effects of grain size-to-particle size ratio ...
Specimens tested indoors inevitably suffer from size effects due to their small sizes (Omar and Sadrekarimi, 2015; Amirpour et al., 2021). Laboratory testing may be suitable for remoulded specimens and specimens with good homogeneity, but the susceptibility of GRS to disturbance may skew the results.
The strength characteristics of a rock is a criterion for its ability to be drilled and fractured. The uniaxial compressive strength (UCS) is the most commonly used strength index in construction industry and in rock engineering projects. Therefore, a comprehensive knowledge on the factors that could influence the value of the compressive strength is essential in any …
In the upper part of QAPF classification of plutonic rocks (Streckeisen, 1976), the granite field is defined by the modal composition of quartz (Q 20 – 60 %) and the P/(P + A) ratio between 10 and 65. The granite field comprises two sub-fields: syenogranite and monzogranite. Only rocks projecting within the syenogranite are considered granites in the Anglo-Saxon …
This study explored the potential of granite stone powder (GSP) as a supplementary cementitious material (SCM). ... To better study the effect of stone powder on the pore size distribution, the pores were divided into four ... The gray correlation between compressive strength and pore size distribution parameters, in descending order, was >1000 ...
Coarse aggregate consists of larger particles such as gravel or crushed stone. It adds strength and stability to the concrete mix, enhancing its mechanical properties. ... maximum sizes of granite ...
The mechanism of grain size effect on granite failure evolution was discussed. The results reveal that as the grain size increases, the strength and the elastic modulus decrease while the plastic deformation characteristic is enhanced. Grain size also affects the frequency distribution of AE signals and its time-varying characteristics.
Stone Effect Tile. Porcelain stoneware slabs Fiandre. Marble, granite and stone tiles in technical ceramic for flooring and coverings.. ... EFFECT. Marble Effect; Stone Effect; Granite Effect; ... Size Clear. 60X10 ...
Textural features have major influence on granite strength with similar alteration. ... of granites is essential when considering their industrial use and/or application e.g. for use as dimension stone or building material. Alteration of granites can have a detrimental effect on engineering behaviour and significantly change the behaviour of ...
When reused in cement-treated clay, the granite stone powder particle size affected the composites' unconfined compressive strength (UCS). However, limestone's effect on cement-treated clay ...
Therefore, the particle size effect of stone powder and sand and their interaction in cement–clay pastes were considered in the present. Conclusion. This study investigated the feasibility of producing a robust geo-material using granite rock stone powder, Tokuyama clay, ordinary Portland cement and water. The aim was to determine the effect ...
The purpose of this article is to determine the effect of granite powder grain size and grinding time on the properties of cement paste. A series of cement pastes modified by the addition of granite powder were made and the properties of the fresh mixtures and the mechanical properties of hardened pastes were studied. Based on the study, the best results, …
Table 4 is the mass statistics of each particle size of granite failure fragments ... Ma GW (2018) An investigation of thermal effects on micro-properties of granite by X-ray CT technique. Appl Therm Eng 140:505–519. ... Quantification of microcrack characteristics and implications for stiffness and strength of granite. Int J Rock Mech Min ...
When reused in cement-treated clay, the granite stone powder particle size affected the composites' unconfined compressive strength (UCS). However, limestone's effect on cement-treated clay ...
A series of laboratory tests were carried out focusing on the fracture characteristics of granite under different stress conditions. The macroscopic mechanical characteristics of granite, such as nonlinear stress–strain curve, tension compression bi-modularity, crack initiation, and propagation laws during Brazil splitting, were analyzed with the …
