Papers by Mohammed Al-Fasih
ASEAN Engineering Journal
Consideration of fiber configuration and the distance between the light source or light meter and... more Consideration of fiber configuration and the distance between the light source or light meter and the LTC specimen in the previous studies is still limited. The incorporation of plastic optical fiber (POF) into concrete with fiber configurations of 5 ´ 5 and 6 ´ 6 grids is investigated in terms of short wall panel application to study its light intensity and strength properties. The light-transmitting concrete (LTC) short wall panel of 300 mm wide ´ 400 mm high ´ 75 mm thick is cast using self-compacting concrete (SCC) to ensure the flowability of the concrete during mixing. The fresh SCC is tested under slump flow, V-funnel, and L-box to verify its fresh properties, while compression test is carried out at 28-days on cube specimens to determine its compressive strength. Then, light transmittance and axial load test under compression are conducted for the LTC wall panel. The findings show that the light intensity of the LTC wall panel increased with the increased number of fiber con...
Recently, self-compacting concrete (SCC) has acquired widespread utilized for position in stuffed... more Recently, self-compacting concrete (SCC) has acquired widespread utilized for position in stuffed reinforced concrete structures with hard casting conditions. For such purposes, the fresh concrete needs to have high fluidity and excellent cohesiveness. Self-compacting concrete has ability consists of not merely high deformability of paste or mortar, but additionally resistance to segregation between coarse aggregate and mortar in the event the concrete passes throughout the confined region of reinforcing bars. In order to relieve the volume of ceramic waste materials from the construction industry, it will be possible, between additional applications, to utilize it as aggregates inside the production of self-compact concrete. Using detrimental waste materials within concretemaking will certainly produce to an eco-friendly environment and also sustainable concrete technology and so such concrete can also be called as ‘green’ concrete. This specific paper had been carried out to formu...
Construction and Building Materials, 2021
Abstract This paper evaluated feasibility of using the waste rubber tire crumbs (WRTCs) as partia... more Abstract This paper evaluated feasibility of using the waste rubber tire crumbs (WRTCs) as partial replacement for the natural aggregates in production of alkali-activated rubberized concrete (AARC). Numerical model calculations using the neural network technique were performed to evaluate the overall performance of the proposed rubberized concretes in terms of the compressive strength, splitting tensile strength, flexural strength, water absorption, carbonation depth and impact resistance to dynamic load. The AARC modified with 30% of WRTCs as the natural aggregates replacement showed improved mechanical strength wherein the compressive strength after the curing age of 28 days was 30 MPa, indicating its suitability for diverse construction applications. Inclusion of WRTCs as substitute to the natural aggregates was shown to improve the concrete ductility.
Construction and Building Materials, 2021
PLOS ONE, 2021
Effects of different surface textures on the interface shear strength, interface slip, and failur... more Effects of different surface textures on the interface shear strength, interface slip, and failure modes of the concrete-to-concrete bond are examined through finite element numerical model and experimental methods in the presence of the horizontal load with ‘push-off’ technique under different normal stresses. Three different surface textures are considered; smooth, indented, and transversely roughened to finish the top surfaces of the concrete bases. In the three-dimensional modeling via the ABAQUS solver, the Cohesive Zone Model (CZM) is used to simulate the interface shear failure. It is observed that the interface shear strength increases with the applied normal stress. The transversely roughened surface achieves the highest interface shear strength compared with those finished with the indented and smooth approaches. The smooth and indented surfaces are controlled by the adhesive failure mode while the transversely roughened surface is dominated by the cohesive failure mode. A...
International Journal of Recent Technology and Engineering, 2019
An experimental study was accomplished to study the effect of replacement of both cement and sand... more An experimental study was accomplished to study the effect of replacement of both cement and sand with coal bottom ash (CBA) on the properties of the concrete. Control mix was prepared without coal bottom ash replacement and nominated as series A. The mixes of series B were prepared with20 % replacement of cement with 30 hours ground coal bottom ash (GCBA). Mixes of series C were prepared with four percentages (5,10,15,20) of CBA as partial replacement of sand. Mixes of Series D mixes were prepared as a combination of series B and C. Slump flow, compressive strength, and water permeability properties were investigated. Series D mixes showed lower workability compared to the series C mixes and control mix. Compressive strength of series D mix gained slightly higher strength compared to the control mix but lower than series C strength. Series C mixes absorbed more water compared to control mix concrete. Series D mixes achieved lower water permeability coefficient compare to series C w...
International Journal of Sustainable Construction Engineering and Technology
Coal bottom ash (CBA) is a waste product collected at the bottom of the furnace from the coal ope... more Coal bottom ash (CBA) is a waste product collected at the bottom of the furnace from the coal operatedpower plants. However, its huge production becomes a major environmental issue that will bring a negative impact on the environment as it will lead to a higher risk of groundwater contamination. In this study selected 10% of CBA based on previous studies,but various percentages (5% to 15%) of lime content were used in this study by weight method. The compressive, tensile, and flexural strength tests were performed at 7 and 28days. Based on the results, the workability of concrete showed a reduction when the cement replacement level increased. The compressive, splitting tensile, and flexural strengths were reduced when cement replacement level increase, but the strength was improved with the increase in curing age. However, the concrete with10% CBA indicated higher splitting tensile strength than the control.
IIUM Engineering Journal, 2022
A study on the crystallography of the lime that comes from mussel shell has been conducted to det... more A study on the crystallography of the lime that comes from mussel shell has been conducted to determine the packing density of the material. The experimental analysis encompasses of concrete samples preparation with lime replacement at 5%, 7.5% and 10% by cement weight. The samples were carbonised naturally over a period of six months and subjected to the phenolphthalein test at 60, 90, 120 and 180 days. It has been found that lime originating from the mussel shell is of both the aragonitic and calcitic crystal types. Both crystal polymorphs of aragonite and calcite are denser than the typical normal concrete by 27.8% and 18.3% respectively. This suggest a volumizing effect that is beneficial to reduce carbonation penetration into the capillarity of the concrete. Results from the carbonation test indicate that concrete containing mussel shell lime ash showed up to 51% lower carbonation coefficient and significantly lower intensity of capillarity as shown via FESEM. ABSTRAK: Kajian m...
Steel and Composite Structures, 2020
This study aims to carry out the experimental and numerical investigation on the flexural behavio... more This study aims to carry out the experimental and numerical investigation on the flexural behavior of sandwich honeycomb composite (SHC) beams reinforced with novel triaxially woven fabric composite skins. Different stacking sequences of the carbon fiber reinforcement polymer (CFRP) laminate; i.e., 0-direction of TW (TW0), 0-direction of TW (TW0), 0-direction of UD (UD0), and 90-direction of UD (UD90) were studied, from which the flexural behavior of SHC beam behaviors reinforced with TW0/UD0 or TW0/UD90 novel laminated skins were compared with those reinforced with UD0/90 conventional laminated skins under four-point loading. Generally, TW0/UD0 SHC beams displayed the same flexural stiffness as UD0/90 SHC beams in terms of load-deflection relationships. In contrast, TW0/UD90 SHC beams showed a 70% lower efficiency than those of UD0/90 SHC. Hence, the TW0/UD0 laminate arrangement is more effective with a mass reduction of 39% compared with UD0/90 for SHC beams, although their stiffn...
IIUM Engineering Journal, 2021
In this study, the properties of mortar such as standard consistency, setting time, compressive s... more In this study, the properties of mortar such as standard consistency, setting time, compressive strength, and water absorption rate were investigated. The cement was replaced with Pennisetum purpureum ashes (PPA) in different particle sizes and dosages. PPA was produced in greyish-white ash with total reactive oxides ranging from 37% to 41.1%. Pennisetum purpureum grass (PPG) was burned with a controlled process at 350 °C for the first 3 hours and 600 °C for another 3 hours at a heating rate of 10 °C/min. Then, PPG was ground in three different grinding durations (1, 3, and 6 hours) producing ashes with particle sizes of 10.58 µm, 10.25 µm, and 9.30 µm, respectively. The physical, chemical, and microstructural properties of PPA were evaluated through several tests; particle size analysis, X-ray diffraction analysis, loss on ignition, and chemical composition. Results indicated that PPA is more suitable for use as filling material as a substitute for cement than pozzolanic material a...
International Journal of Integrated Engineering, 2020
Recently, the deficiency of natural sand is considered one of the most important thoughtful issue... more Recently, the deficiency of natural sand is considered one of the most important thoughtful issues in the construction industry as it is one of the raw materials of concrete. The use of industrial waste by-products as an alternative material in concrete production is one solution to natural sand depletion. Therefore, the aim of this study is to investigate the properties of the concrete containing Coal Bottom Ash (CBA) produced by coal-based power plants as sand replacement material. Initially, physical, chemical, microstructural properties like specific gravity, density, sieve analysis, X-ray fluorescence and scanning electron microscopic were investigated. Then, the optimum replacement of sand with CBA was determined based on the workability, compressive and splitting tensile test. The results displayed that the physical properties of CBA are similar to sand. Moreover, CBA was classified chemically as Class-F ash. It was found that the optimum replacement dosage of CBA with sand i...
PLOS ONE, 2020
Skin crack defects can develop in sandwich honeycomb composite structures during service life due... more Skin crack defects can develop in sandwich honeycomb composite structures during service life due to static and impact loads. In this study, the fracture behavior of sandwich honeycomb composite (SHC) beams containing crack at the skin was investigated experimentally and numerically under four-point loading. Three different arrangements of unidirectional (UD) carbon fiber composite and the triaxially woven (TW) fabric were considered for the skins. The presence of a 10 mm crack at mid-span of the top skin, mid-span of the bottom skin, and midway between load and support of the top skin, respectively, were considered. Failure load equations of the load initiating the skin crack extension were analytically derived and then numerically developed using the J-integral approach. The crack extension failure mode dominated all cracked specimens except those with low-stiffness skin which were controlled by the compressive skin debonding and core shear failures.
European Journal of Environmental and Civil Engineering, 2021
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Papers by Mohammed Al-Fasih