Hasan Ali Abbas

Madenat Alelem University College | MAUC · Civil engineering department

An extensive review on the anisotropy of rock samples has been carried out to characterize the velocity and strength behaviors under a variety of geometrical and mechanical conditions. Primarily, the causes and impacts of anisotropy is discussed to further understand the importance of the effect of such material from an engineering point of view. T...

The failure mode limitations presented in the International Society for Rock Mechanics (ISRM) were recognised as an obvious issue by invalidating most of the failure modes along the bedding plane. In this study, the anisotropic behaviour of index strength and failure mode of weathered shale are evaluated by utilising the point load test (PLT) and t...

Anticipating the progressive damage and strength of an anisotropic and interbedded rock mass is challenging due to the overwhelming variables which need to be considered. Therefore, the strength and progressive damage of each rock material is not a realistic model which can be used to define the deformation of the interbedded anisotropic rock mass....

Shear wave velocity (Vs) is a critical parameter in geophysical investigations, micro-zona-tion research, and site classification. In instances where conducting direct tests at specific locations is challenging due to equipment unavailability, limited space, or initial instrumentation costs, it becomes essential to estimate Vs directly, using empir...

Acoustic emission has a series of successful studies in mapping of brittle isotropic rock material. However, the underground lithology isn't ideally homogenous as a laboratory specimen. Particularly, for anisotropic, soft, jointed, weathered rock mass, the need for more realistic model is still there. This study investigates the main issues faced i...

A cement-based composite, ultra-high-performance concrete (UHPC) helps both new and old buildings last longer in service. The growing demand for quality building materials and applications has led to the emergence of various commercial UHPC formulations after decades of research and development. Nevertheless, they are costly and necessitate strict...

This article introduces a cutting-edge energy system to meet the residential building's high energy demands while lowering emissions and related operating expenses. The central concept revolves around rule-based control strategies designed to exploit wastewater's heat, accounting for a substantial amount of the total heating demand in residential b...

Natural fibers are frequently employed in the engineering of building materials. However, the highly beneficial nature of using sugarcane fiber waste imbedded with concrete as a construction material may enhance the ductility and crack control of brittle concrete. This review summarized the effect of using sugarcane bagasse fibers in a several of c...

One of the most crucial ecological challenges is the removal of the ever increasing enormous quantities of Fly Ash (FA) generated from various industries and its reduction in landfill spaces. LightWeight Aggregate Concrete (LWAC) is utilized in the construction industry as it can decrease the unit weight leading to lower dead load, thermos-insulati...

This article introduces a cutting-edge energy system to meet the residential building's high energy demands while lowering emissions and related operating expenses. The central concept revolves around rule-based control strategies designed to exploit wastewater's heat, accounting for a substantial amount of the total heating demand in residential b...

In this paper, an attempt has been made to investigate the impacts of leaching on the geotechnical and microstructural properties of clayey gypseous soils at various percentages of gypsum; 20 %, 40 %, and 60 %, and their respective densities. In this respect, the work delves into the interaction of the properties based on the following experiments:...

Polypropylene (PP) is widely used in the construction industry to produce a variety of materials. Accordingly, a huge amount of waste is produced during or after the construction activity. The PP fiber provides a good alternative solution to enhance concrete properties and more sustainable concrete produced in terms of isolation and weight reductio...

Most typical commercial reinforced concrete buildings in Iraq were designed using outdated building codes that did not consider horizontal seismic loads; they primarily focused on vertical loads. As a result, there is uncertainty regarding whether these conventional buildings can withstand recent earthquakes in Iraq. In this study, we created a thr...

This research deals with the phenomenon of swelling in local clayey soil in Iraq, which is characterized as a sedimentation region rich in various ions that aid in the formation of clay soil. The mineral composition of the clay particles is one of the main factors that affect the soil's swelling. The soil studied is brown clay soil, classified acco...

The sliding failures commonly occur in interbedded formations along the weakness plane of the bedding plane a sedimentary rock or the joint interface. Therefore, studying the shear strength characteristics at the bedding plane or interface is crucial for evaluating the expected failure plane. In this study, the shear strength characteristics of pla...

The cost of producing concrete has increased, and its effects on the natural environment have become apparent. The ideal solution is to use agro-waste material instead of cement in concrete. This research aims to determine how well RHA works as a cement substitute. At increments of 5%, 10%, and 15%, rice husk was applied in substitute of cement. Co...

The mapping of failure that uses acoustic emission (AE) is an advanced approach when tracking the location of cracks in rock materials under progressive stress. However, attenuation of the acoustic wave significantly affects the identification of the acoustic source. The isotropic attenuation model suggests a constant attenuation in all rock materi...

Characterizing the elastic response from body waves propagating through an interbedded shale-sandstone geological formation with multi-orientation joints and various interlayer ratios is extremely challenging. A laboratory composite model of three layers, i.e., sandstone-shale-sandstone, with multi-angled joint orientations, i.e., 30°, 45°, 60°, an...

The failure mode limitations presented in the International Society for Rock Mechanics (ISRM) were recognised as an obvious issue by invalidating most of the failure modes along the bedding plane. In this study, the anisotropic behaviour of index strength and failure mode of weathered shale are evaluated by utilising the point load test (PLT) and t...

significantly decreased. In comparison, the wave velocity values were reduced by 35% and 66% for V P and V S , respectively, as were the increment angles of joint orientation from 30° to 90°. The anisotropic behavior of wave velocity for the composite model appears to be influenced by the joint orientation rather than the bedded shale interlayer. T...

The failure mode limitations presented in the International Society for Rock Mechanics (ISRM) were recognised as an obvious issue by invalidating most of the failure modes along the bedding plane. In this study, the anisotropic behaviour of index strength and failure mode of weathered shale are evaluated by utilising the point load test (PLT) and t...

The heterogeneity of interbedded weathered sandstone-shale sedimentary Kenny Hill formation is the major challenge for geotechnical engineers to evaluate this rock mass behavior, particularly, due to the anisotropy induced by the weathered shale bedding plane orientation and interbedded joint interface orientation. This study aimed to evaluate the...

An extensive review on the anisotropy of rock samples has been carried out to characterize the velocity and strength behaviors under a variety of geometrical and mechanical conditions. Primarily, the causes and impacts of anisotropy is discussed to further understand the importance of the effect of such material from an engineering point of view. T...

Unloading point method UPM recognized as a relevant analyzing approach to obtain the static soil resistance (bearing capacity) for the Statnamic loading test. This method designated to fulfill that purpose is based on two essential assumptions; firstly, is the linear damping value along the test duration and secondly, the rigid body assumption for...

Shear modulus (G) is one of the most important parameters in geotechnical design to ensure adequate margin of safety is maintained in the design of constructions such as buildings. There is a direct relationship between the shear modulus and shear wave velocity (Vs) which can get easily from Seismic methods. Some of Seismic methods have shortages w...

Unloading point method UPM recognized as a relevant analyzing approach to obtain the static soil resistance (bearing capacity) for the Statnamic loading test. This method designated to fulfill that purpose is based on two essential assumptions; firstly, is the linear damping value along the test duration and secondly, the rigid body assumption for...

An extensive review on the anisotropy of rock samples has been carried out to characterize the velocity and strength behaviors under a variety of geometrical and mechanical conditions. Primarily, the causes and impacts of anisotropy is discussed to further understand the importance of the effect of such material from an engineering point of view. T...

An extensive review on the anisotropy of rock samples has been carried out to characterize the velocity and strength behaviors under a variety of geometrical and mechanical conditions. Primarily, the causes and impacts of anisotropy is discussed to further understand the importance of the effect of such material from an engineering point of view. T...

An extensive review on the anisotropy of rock samples has been carried out to characterize the velocity and strength behaviors under a variety of geometrical and mechanical conditions. Primarily, the causes and impacts of anisotropy is discussed to further understand the importance of the effect of such material from an engineering point of view. T...

For more than two decades ago after the first statnamic loading test and until now a days, the unloading point method (UPM) still used for the statnamic test analysis as a standard for driving the static load-displacement in the world. Even after shows this method to some uncertainties when it used in conditions out of the limitation of this method...