Geological and Engineering Properties of Granite Rocks from Aqaba Area, South Jordan

Abstract

Jordanian granitic rocks (JG) are highly distributed and available in huge quantities in south Jordan, Aqaba area. Granite in south Jordan (JG) is belonging to Aqaba granite complex. This study has been carried out to investigate geological and engineering properties of JG from Aqaba vicinity, south Jordan, in addition to identify and classify the different granitic rocks. 27 random samples of JG were collected from different quarries in three locations from the study area to investigate their characterization. Engineering properties of JG were tested and investigated using ultra sonic velocity test, abrasion test, flexural strength, specific gravity test, and compressive strength test. Engineering tests results show that JG has metal disk abrasion less than 21 mm, flexural strength of 16.9 Mpa, average dry specific gravity of 2.69 and very low absorption while the compressive strength results range between 60 to 90 Mpa. The results show that the engineering characterization of JG is complying with local and international specifications and standards used for classifying the decorative and building granite stones.

Variation in the physico–mechanical properties of granitic aggregates in Ogun State, Nigeria

“…This is expected since granites are products of rocks. The observed variations which can be attributed to geological, lithological, physical and environmental factors are in accordance with the findings of [20] and [4].…”

Investigation on the Suitability of Metamorphosed Granite in Ilorin Nigeria for Road Construction and Polished Rock

“…Table 5 shows the Polish Value [20]. The values of 91-97 were considered excellent for lapidary [21], and these tested samples' values fall within this range.…”

Investigation on the Suitability of Fobur Granite in Jos, Plateau State, Nigeria for Road Construction

“…This shows thatsample C is more porous than sample A and B, but are all within the standard porosity value of granite ranges from 0.01 to 0.02 (i.e.1.0 to 2.0 %); (Broch and Franklin, 1972). Broch and Franklin (1972).Thus, Finally, Table 4 shows the granite Calcium carbonate composition of Sample A -52.23%, Sample B -48.50%, Sample C -54.28%; this shows that the granites contain minimum required standard of calcium carbonate require to be identified as Gneiss Granite (Abuqubu, et al, 2016).This granite under study will withstand the rigor on road construction (hakkl, 1971;Wills, 2006). Table 5, is the result of the hardness testing, which shows that Samples A, B and C have high hardness value of 87.23, 93.23 and 89.30 HBR respectively, but sample B has the highest maximum hardness value of 93.23 and thus, shows that the sample is hard enough for a road constructional work (Ojo and Olaleye, 2004) Table 6 reveals that all the granite rocks samples were slightly radioactive with values as 6.8, 7.7 and 8.3 microR/hr., this could be as a result of the present of quartz in the samples.…”

“…Furthermore, Table 7, gives the luster value test on the slabs with polish ability values of 92, 94 and 94 respectively and shows excellent lapidary. Figure 1: shows the polished section of the granite samples A, B, and C which reveals that samples B and C display more attractive color tint than sample A., which relatively shows that apart from the use of this granite for road construction, it can as well be used as floor tiles which will beautify floors of a leaving house and it is durable (Abuqubu, et al, 2016). Figure 2, Shows the micrograph of the microscopic analysis of samples A,B and C which are the metallurgical microscope images taken at a magnification of X500 show the interactions of the constituent minerals in granite.…”