HILTON AHMAD

@uthm.edu.my

ASSOCIATE PROFESSOR
UNIVERSITI TUN HUSSEIN ONN MALAYSIA



                          

https://researchid.co/hilton78

EDUCATION

Bachelor of Civil Engineering (Universiti of Malaya)
PhD in Structures and Materials Engineering (University of Surrey)

RESEARCH, TEACHING, or OTHER INTERESTS

Civil and Structural Engineering, Computational Mechanics, Mechanics of Materials, Ceramics and Composites

55

Scopus Publications

714

Scholar Citations

14

Scholar h-index

21

Scholar i10-index

Scopus Publications



  • Utilization of Silica Fume and Sodium Hydroxide in Treated Crumb Rubber for Cement Mortar
    Khairi Supar, Hairuddin Mohammad, Masiri Kaamin, Mohamad Azim Mohammad Azmi, Mohd Kamaruzaman Musa, Mohammad Ashraf Abdul Rahman, Hilton Ahmad, and J. Toby Mottram
    Akademia Baru Publishing
    Cement mortar offers an excellent replacement for materials such as fine aggregate with tire rubber waste in the form of crumbs. It provides excellent environmental and technical benefits to concrete production using recycled materials. As such, it contributes to the sustainable development of the construction industry. This paper mainly emphasizes the strength of untreated and treated crumb rubber from waste tires in cement mortar. Crumb rubber that has been pre-treated with Silica fume (SF) and sodium hydroxide (NaOH) to improve the strength of the mortar mix. This research used a cement-aggregate mix ratio of 1:4 and a water-cement ratio of 1:2. Five different percentages of fine aggregate replacement (0, 3, 6, 9, and 12%) was selected. The compressive strength, density, and water absorption of the mortar were measured at 28 days to find optimum strength. The compressive strength of the cement mortar mixed with treated crumb rubber showed significantly higher values, with an increase of 92% for 12% treated crumb rubber by sodium hydroxide (TN12) compared to untreated crumb rubber. The density value of the mortar cube mixed with treated crumb rubber decreased when the percentage of replacement for treated crumb rubber increased. In the application of roof tiles, lower density values provide an advantage for workability during installation. For water absorption, the treated crumb rubber contributes to a lower percentage of water absorption (acceptable until 6% for SF and 9% for NaOH) compared to the control sample as untreated crumb rubber. Therefore, a mixture of mortar with treated crumb rubber, especially NaOH solution, is better than the untreated crumb rubber specimen.


  • Fracture energy and mechanical properties of toughened epoxy resin with eggshell powder
    Collin Fong, Sugiman Sugiman, Desmond Chin, and Hilton Ahmad
    Informa UK Limited

  • Strength Prediction of Notched Foamed Concrete Beam Strengthened with KFRP Plates under Flexural Load
    M. R. Maulana, S. Sugiman, H. Ahmad, Z. M. Jaini, and Hazrina Mansor
    Springer Science and Business Media LLC

  • Application of Bilinear Softening Laws and Fracture Toughness of Foamed Concrete
    Malik Ridwan Maulana, Hilton Ahmad, and Sugiman Sugiman
    MDPI AG
    This study examined the fracture and failed performance of foamed concrete materials by testing normalized notched beams under three-point bending via three methods: inverse analysis, digital image correlation (DIC), and finite element modeling (FEM). It also discussed both experimental and FEM characteristics. However, inverse analysis is only applicable for specimens with a notch height of 30 mm. Bilinear softening of the tested beams was estimated to identify the fracture energy (GF), critical crack length (ac), and elastic modulus (E). Additionally, the fracture toughness was calculated by adopting the double-K method (initiation fracture, unstable fracture, and cohesive fracture). Two-dimensional FEA modeling of the fracture was conducted using the traction-separation law (TSL), incorporating the extended finite element method (XFEM) and cohesive zone (CZM) techniques. A finite element sensitivity for the XFEM and CZM was performed, with the global mesh size of 2 and the damage stabilization cohesion of 1 × 10−5 showed good convergence and were used in other models. Further comparison of the DIC experiment findings with those from the FEM demonstrated good agreement in terms of crack propagation simulation.


  • Static Shear Strength of Single-Lap Joint Using Eggshell-Toughened Epoxy as Adhesive Agent
    Collin Fong, , Desmond Daniel Chin, Hilton Ahmad, , and
    Penerbit UTHM
    Eggshells are daily food waste disposed of in landfills, producing environmentalissues and an unpleasant odour. Eggshells were crushed to form eggshell powder and may be suitably applied as a filler in epoxy resins to improve their mechanical properties. The shear strength of toughened epoxy with eggshell powder (TEEP) wasstudied. Single-lap joint (SLJ) sheartests were conducted toinvestigate the shear strength of the SLJbonded with different volume fractionsof TEEP. For this purpose, the eggshells were dried and crushed into particles of size 150μm. The volume fraction of eggshell powder in the epoxy resin is 0%, 2.5%, 5%, and 10% by epoxy weight. The epoxy resin system was made of EPIKOTE Resin 828 and Hardener 651 with a mixing ratio of 5:2 by weight.The results show that the shearstrength greatly depended upon overlap lengthand filler volume fractions.The improvement was up to 72.7% and 39.9%,with the longest overlap length and 5% TEEP fraction.Hence, an overlap length of 38.1 mm and a 5% eggshell volume fraction gave the optimum shear strength of 5.045 kN.

  • Fracture Energy Measurement in Different Concrete Grades
    C.L. Yip, , H.M. Mohamad, H. Ahmad, , and
    Penerbit UTHM
    Fracture energy is regarded as an intrinsic (material) properties that dominates crack mechanisms and associated crack growth in concrete damage under applied stress. In recent times, significant advancements in computing technology have driven the adoption of finite element analysis (FEA) methodologies that necessitate the integration of constitutive models, includingthe traction-separation relationship derived from cutting-edge fracture mechanics. A physically-based model requires fracture energy values; therefore, a properly measured fracture energy value is essential to exhibit better structure response within FEA models. There are large arrays of parameters involved during the concrete mixture, such as beam size effect, aggregate size, and concrete grade, that affect the flexural resistance of the concrete. The fracture and failure in concrete ahead of the crack tip are represented by fracture energy values where micro-damage events such as interfacial failure, fiber-bridging, and matrix cracking occurred.This study aims to determinethe fracture energy of concrete specimens with combination of notch depth aoat mid-span, design concrete strength as specified in the testing series. Independent compression strength, fcand measured load-displacement profiles underathree-point bendingtest were used to determine fracture energy by incorporating three available fracture energy expressions such as Bazant, Hillerborg,and CEB-FIP models.


  • Decomposing Process of Food Waste using Black Soldier Fly Larvae (BSFL): Case Study in Taman Pura Kencana, Johor
    Ummu Salamah Md Tahir, , Noor Yasmin Zainun, Hilton Ahmad, Shabir Hussain Khahro, Ahmad Rizal Alias, , , , and
    Penerbit UTHM
    Food waste is one of the critical issues which has been discussed in many countries including Malaysia. Apart from that, about 50% of food waste usually being dumped at landfill sites and incinerators which root to more problems towards the environment, economic and society. In this research, Taman Pura Kencana, Johor was chosen to identify the average total of food waste generation from selected households in 3 months from April 2021 to June 2021and to determine decomposing days of food waste using BSFL.Raosoft Sample Size Calculator was used to calculate sample respondents bringing 48 households in this research. Hence,the average total of food waste generation from households per month was1056.82 kgThe collection of food waste from selected households in Taman Pura Kencana during the normal month of June was the highest compared to the fasting month in April and Eid month in May.25samples of food wastewere examined to identify duration of decomposing daysusing BSFLbased on pH, temperature and moisture content.The results showed that, the food waste successfully decompose after 10 days compare to control sample whichwas taking the longest time to fully decompose at about 90 days.The range of average temperature of the food waste using BSFL were 27°C to 34°C.The initial range of average pH value for the food waste samples were 3.22 to 4.00 while on the last decomposing days of the food waste samples were 7.06 to 7.12.Moisture content for food waste samples is51% except for control sample.Inconclusion, BSFL werethe ideal insects to decrease amount of food waste in landfills and incinerators as they could accelerate the time of composting food wasteand could reduce the negative impacts towards the environment, economic and society.This research’s findings will help create awareness and a better understanding of how much food waste could be generated from residential area, as this contributes to many negative issues when discarding them through landfills and incinerators.

  • XFEM Modelling and Experimental Observations of Foam Concrete Beam Externally-Bonded with KFRP Sheet
    Malik Ridwan Maulana, Sugiman Sugiman, Hilton Ahmad, Zainorizuan Mohd Jaini, and Hazrina Mansor
    FapUNIFESP (SciELO)

  • Proposed Framework for the Flood Disaster Management Cycle in Malaysia
    Syed Ahmad Hakim Bin Syed Muzamil, Noor Yasmin Zainun, Nadiatul Nazleen Ajman, Noralfishah Sulaiman, Shabir Hussain Khahro, Munzilah Md. Rohani, Saifullizan Mohd Bukari Mohd, and Hilton Ahmad
    MDPI AG
    Floods have been reported to be an important disaster in any country and Malaysia has faced similar disasters in the past, resulting in disturbance in daily community routine issues, financial losses, infrastructure damage including railway tracks, bridges, roads, vehicles, properties, and the worst is the loss of lives. The Sarawak region of Malaysia also witnesses yearly disasters in rainy seasons. The purpose of this paper is to explore the possible challenges to manage the flood disaster in Sarawak and to identify the possible solutions to manage floods. In this research, secondary data was used for qualitative assessment. The newspaper articles were collected from the year 2015 until 2019. Targeted interviews were conducted with experts working in flood management disaster schemes to rank and validate the most important factors after content analysis from the past news reports. It is concluded that poor drainage systems, rapid development, heavy rainfall, lack of public awareness, and lack of coordination in executing the disaster management cycle among agencies are the key challenges. Thus, it is recommended that the drainage systems should be upgraded in the case study area. Proper flood management schemes should be planned and flood forecasting should be strengthened. An effective early flood warning system should be designed to activate the plans and a proper public awareness campaign should be initiated to educate and train the local community to deal with such disasters. It is also suggested to assure and maintain proper collaboration among different agencies during such disasters. In the last phase, this paper also proposes a framework for future flood disaster management. The framework will assist the stakeholders to make informed decisions to save human lives and substantial financial losses. The framework can also be used in similar terrain countries.

  • FEA Modelling of Externally-Strengthened Concrete Beam with CFRP Plates Under Flexural Test
    Malik Ridwan Maulana, , Hilton Ahmad, Hazrina Mansor, , and
    Penerbit UTHM
    This study concentrates on FEA modelling of concrete beam strengthened with externally bondedCFRP lates under bending by using Traction Separation Law (TSL) as constitutive law to require maximum cohesive stress and fracture energy values. The FEA models were developed following experimental work reported by Al-Rousan et al. [23] and Ding et al. [22]. Combination of two numerical techniques were adopted, i.e., Extended Finite Element Method (XFEM) and Cohesive Zone Method (CZM) assigned within cracked beam region and adhesive layer respectively. The consistence of FEA beam deformations to capture debonding failure as seen during experimental observations and load-displacement was evaluated accordingly. Additionally, combination of XFEM-CZM techniques provides good strength predictions with experimental dataset. It is clearly shown that the failure mode exhibited are determined by testing method, CFRP width and CFRP length. CFRP sheets provides a significant contribution to concrete ductility, which is noticeable in longest CFRP sheet. All testing series were examined, the discrepancies of less than 25% were found. Note that current approach used calibrated fracture energy values from similar concrete grade and CFRP plates, however better prediction can be produced if fracture energy values were independently determined from experimental set-up.

  • Strength Predictions of Normal Concrete Beam with Corner Notch
    Hilton Ahmad and Noor Yasmin Zainun
    Springer Nature Singapore


  • Environmental impact assessment (Eia) using geographical information system (gis): An integrated land suitability analysis of filling stations
    Nadiatul Nazleen Ajman, Noor Yasmin Zainun, Noralfishah Sulaiman, Shabir Hussain Khahro, Farid Ezanee Mohamed Ghazali, and Mohd Hilton Ahmad
    MDPI AG
    A stable methodology for conserving the natural environment has been a concern for developing countries. The fast-paced growth of urbanization generated significant demand for automobiles, leading to greater utilization of fuel. The consumption of fuel is fulfilled by the Filling Station (FS). An FS is undoubtedly an important facility, but it is reported that it has high potential for degradation of natural resources, pollution problems, environmental degradation, and hydrological, geological, and socio-economic hazards, and therefore the site selection of such facilities is an essential problem. The traditional approach utilizes EIA assessments and GIS separately and existing models lacks integration. Thus, this study provides an integrated GIS-based land suitability modeling using EIA assessments, and the Analytic Hierarchy Process (AHP) has been used as key land use feature prioritization for the appropriate selection of FS locations. A case study is also carried out to assess the precision of the suggested model. The findings indicate that more than 73% of the present FS are in the acceptable region, while 27% of the FS are not in the adequate region using the local code. Furthermore, 58% of the present FS are in the acceptable region, while 42% of current FS are not in the adequate region using the international code. The findings of the comparative code analysis show a difference in the codes. The international code looks safer compared to the local code because it has higher buffer distances. This model will assist decision-makers in making better decisions for such land suitability problems for filling stations, and this model can also be extended to other facilities by some modifications in the filters and data layers of the model.

  • Numerical modelling of foamed concrete beam under flexural using traction-separation relationship
    H. Ahmad, S. Sugiman, Z.M. Jaini, and A.Z. Omar
    FapUNIFESP (SciELO)


  • XFEM modelling of single–lap woven fabric kenaf composites bolted joints with temperature action
    H. Ahmad, S. Sugiman, and N.Y. Zainun
    FapUNIFESP (SciELO)
    The current paper aimed to model failures and fractures in single-lap bolted joints of woven fabric kenaf fiber reinforced polymer (KFRP) composite plate to fail in net-tension. The approach was based on the assumptions that micro-damage events were densely concentrated ahead of the notch tip and crack growth were readily seen along net-tension plane in a self-similar fashion. A 3-D finite element modelling framework were developed to explicitly incorporate bolt clamp-up in a range of KFRP series following tested experimental datasets. Lay-up types, normalized W/d, temperature exposure with constant bolt torque of 5 Nm were considered. It was found that KFRP plates under elevated temperature were stronger than under room temperature due to matrix toughening. Traction-separation relationship was incorported within Extended Finite Element Method (XFEM) framework to model damage within KFRP composite plate by using independent experimental datasets, here incorporates un-notched plate strength, σo and fracture toughness, Gc of all testing lay-ups. Constitutive model used is associated with stress concentration, therefore good agreement between predicted and experimental bearing stress at failure with net-tension failure mode is perhaps not suprising.


  • XFEM modelling of single-lap Kenaf fibre composite hybrid joints under quasi-static loading
    Lee Sim Yee and Hilton Ahmad
    Informa UK Limited
    ABSTRACT The present paper aims to predict the bearing stress at failures of woven fabric kenaf fibre reinforced polymer with single-lap hybrid joints under quasi-static testing. Testing series investigated includes a variation of joint types, normalised W/d, lay-up types, plate thickness and bolt loads. Initially, cohesive failures appeared within adhesive layer, followed by net-tension failure mode in all testing series investigated associated with stress concentration. Strength prediction was carried out subsequently by implementing XFEM framework with an embedded traction-separation relationship within ABAQUS CAE. The experimental datasets and XFEM results were evaluated where good agreements were found in the combination of cross ply and thicker coupon with a discrepancy of less than 5%.

  • XFEM modelling in multi-bolted joints using a unified bolt preload
    Khairi Supar, Hilton Ahmad, and Mustafasanie M. Yussof
    FapUNIFESP (SciELO)
    Multi-bolted joints are adopted and designed to provide efficient load transfer within assembled engineering parts. Bearing failure is favorable during design phase due to more progressive failure mode, however, ability of by-pass stress to be transferred to adjacent bolts in multi-bolted joints prone to catastrophic net-tension failure. Former approach known as equivalent spring stiffness (ESS) was proposed but it requires experimental sliding load value. This has led to semi-empirical approach to require experimental set-up than incorporating a generic bolt preload value. This paper aims to provide a unified bolt preload (UBP) value to be implemented in each bolt independent upon plate properties and bolts arrangements. Strength prediction were taken place by 3-D Extended Finite Element Method (XFEM) framework of various staggered and non-staggered arrangements to include various lay-ups types and plate thickness. The failure loads predictions in each testing series were investigated and then validated against experimental datasets and also compared with previous technique (ESS approach). Crack patterns and failure modes from this approach were consistent with experimental observations, where net-tension failures were observed within all testing series. Less good prediction compared to from ESS technique, partly due to semi-empirical nature in former approach. Nevertheless, reasonable agreement in UBP technique with experimental datasets were obtained (average discrepancy of approximately 20%).

  • Multi-holes configurations of woven fabric kenaf composite plates: Experimental works and 2-D modelling
    K. Supar, , H. Ahmad, and
    Universiti Malaysia Pahang Publishing
    A study on structures response in multi-holes plates is important to understand the effect of neighbouring hole on stress concentration as subjected to tensile loading prior to bearing failure in multi-bolted joints. Current work implemented experimental framework on staggered and non-staggered multi-holes configurations to include various lay-up types, plate thickness and hole configurations as specified in the testing series. Experimental observations found that all configurations failed in net-section path suggesting that fracture initiates and propagates from the notch tip perpendicular to loading direction in self-similar fashion through the plate thickness. Non-staggered hole configurations demonstrated peak load compared to staggered counterparts due to more congested holes in staggered configurations. Two-dimensional Extended Finite Element Method (XFEM) modelling framework was carried out in all configurations investigated by sufficient meshing refinements, damage stabilization value and boundary conditions. XFEM was extended from classical finite element expression which has enriched function to enable the crack be tracked visually. A physically-based constitutive model from traction-separation relationship was applied and independently measured material properties and in-plane elastic properties were implemented in current work. Strength prediction results showed that good agreement was found in all testing series and showed discrepancies of less than 15%, the best prediction in combination of PX4 lay-ups and staggered multi-holes configurations series.

RECENT SCHOLAR PUBLICATIONS

  • Static Shear Strength of Double-Strap and Single-Lap Joints incorporating Toughened Mussel Epoxy
    MNS Azhar, S Velayutham, S Sugiman, DD Chin, SY Lee, RH Goh, ...
    International Journal of Sustainable Construction Engineering and Technology 2024

  • Experimental and numerical investigation of adhesively bonded kfrp/steel double strap joints incorporating eggshell powder-toughened epoxy adhesive
    CL Yip, S Sugiman, D Chin, H Ahmad
    Case Studies in Construction Materials 20, e02790 2024

  • The development of IBS structure panel using revit software
    K Supar, NAI Hisyamudin, MNA Muhamad Amin Abdulla, NFS Mohd Noor, ...
     2024

  • Fracture energy and mechanical properties of toughened epoxy resin with eggshell powder
    C Fong, S Sugiman, D Chin, H Ahmad
    Journal of Adhesion Science and Technology 38 (12), 2065-2084 2024

  • The Development of Semi-Auto Flood Door Barrier
    K Supar, SMNS Ismail, MA Azmi, AI Jafri, MAM Azmi, H Ahmad
    Multidisciplinary Applied Research and Innovation 5 (2), 24-30 2024

  • Shear Strength of Adhesively bonded Joints with Toughened Mussel Shell Powder
    S Velayutham, S Sugiman, MH Ahmad, ZM Jaini
    International Journal of Integrated Engineering 16 (1), 201-212 2024

  • Experimental and numerical investigation of adhesively bonded kfrp/steel double strap joints incorporating eggshell powder-toughened epoxy adhesive
    CLY Chia Lia Yip, SS Sugiman Sugiman, DC Desmond Chin, H Ahmad
    Case Studies in Construction Materials 20, 1-7 2024

  • Utilization of Silica Fume and Sodium Hydroxide in Treated Crumb Rubber for Cement Mortar
    K Supar, H Mohammad, M Kaamin, MA Mohammad Azmi, MK Musa, ...
    Journal of Advanced Research in Applied Mechanics 118 (1), 54-66 2024

  • The Utilization of Silica Fume in Mortar Mixed with Rubber Crumb
    K Supar, MAM Azmi, NM Yazid, H Ahmad, MS Nemmang
    International Journal of Business and Technology Management 5 (S5), 340-348 2023

  • Strength Prediction of Notched Foamed Concrete Beam Strengthened with KFRP Plates under Flexural Load
    MR Maulana, S Sugiman, H Ahmad, ZM Jaini, H Mansor
    Arabian Journal for Science and Engineering 48 (10), 13059-13071 2023

  • Application of Bilinear Softening Laws and Fracture Toughness of Foamed Concrete
    MR Maulana, H Ahmad, S Sugiman
    Construction Materials 3 (3), 287-304 2023

  • Static shear strength of single-lap joint using eggshell-toughened epoxy as adhesive agent
    C Fong, DD Chin, MH Ahmad
    International Journal of Integrated Engineering 15 (2), 104-112 2023

  • Utilizing XFEM model to predict the flexural strength of woven fabric Kenaf FRP plate strengthened on plain concrete beam
    Z Omar, S Sugiman, H Mansor, H Ahmad
    Case Studies in Construction Materials 18, e02056 2023

  • Experimental and Numerical Investigations on the Tensile Behaviour of Bamboo-Glass Fibres Hybrid Reinforced Polymer Composites
    S Sugiman, PD Setyawan, AD Catur, H Ahmad
    Key Engineering Materials 941, 233-239 2023

  • Material Properties and Fracture Energy of Kenaf FRP Composites
    Z Omar, S Sugiman, MM Yussof, H Ahmad
    The First Mandalika International Multi-Conference on Science and 2022

  • The Assessment of material resource and cycle (MRC) of architectural finishing works for tall building construction
    AM Hajji, A Yulistyorini, CP Dewi, MH Ahmad
    IOP Conference Series: Earth and Environmental Science 1116 (1), 012075 2022

  • The effects of woven fabric Kenaf FRP plates flexural strengthened on plain concrete beam under a four-point bending test
    Z Omar, S Sugiman, MM Yussof, H Ahmad
    Case Studies in Construction Materials 17, e01503 2022

  • Decomposing Process of Food Waste using Black Soldier Fly Larvae (BSFL): Case Study in Taman Pura Kencana, Johor
    USM Tahir, NY Zainun, H Ahmad, SH Khahro, AR Alias
    International Journal of Sustainable Construction Engineering and Technology 2022

  • XFEM Modelling and experimental observations of foam concrete beam externally-bonded with KFRP sheet
    MR Maulana, S Sugiman, H Ahmad, ZM Jaini, H Mansor
    Latin American Journal of Solids and Structures 19 (6), e460 2022

  • FEA modelling of externally-strengthened concrete beam with CFRP plates under flexural test
    MH Ahmad, MR Maulana, H Mansor
    International Journal of Integrated Engineering 14 (5), 258-271 2022

MOST CITED SCHOLAR PUBLICATIONS

  • Compressive strength of palm oil fuel ash concrete
    MH Ahmad, RC Omar, MA Malek, NM Noor, S Thiruselvam
    Proceedings of the international conference on construction and building 2008
    Citations: 78

  • Strength prediction in CFRP woven laminate bolted double-lap joints under quasi-static loading using XFEM
    H Ahmad, AD Crocombe, PA Smith
    Composites Part A: Applied Science and Manufacturing 56, 192-202 2014
    Citations: 55

  • Proposed framework for the flood disaster management cycle in Malaysia
    SAHBS Muzamil, NY Zainun, NN Ajman, N Sulaiman, SH Khahro, ...
    Sustainability 14 (7), 4088 2022
    Citations: 48

  • Mechanical properties of palm oil clinker concrete
    MH Ahmad, S Mohd, NM Noor
    Engineering Conference, 172 2007
    Citations: 40

  • Comparison of cohesive zone and continuum damage approach in predicting the static failure of adhesively bonded single lap joints
    S Sugiman, H Ahmad
    Journal of Adhesion Science and Technology 31 (5), 552-570 2017
    Citations: 35

  • Strength prediction in CFRP woven laminate bolted single-lap joints under quasi-static loading using XFEM
    H Ahmad, AD Crocombe, PA Smith
    Composites Part A: Applied Science and Manufacturing 66, 82-93 2014
    Citations: 34

  • Physical properties of local palm oil clinker and fly ash
    MH Ahmad, NM Noor
    Engineering Conference, 162 2007
    Citations: 34

  • Shear strengthening of reinforced concrete beams using carbon fiber reinforced polymer laminate: a review
    MBS Alferjani, A Samad, BS Elrawaff, NB Mohamad, MHB Ahmad
    American Journal of Civil Engineering 2 (1), 1-7 2014
    Citations: 25

  • Physically based finite element strength prediction in notched woven laminates under quasi-static loading
    H Ahmad, AD Crocombe, PA Smith
    Plastics, Rubber and Composites 42 (3), 93-100 2013
    Citations: 17

  • Use of carbon fiber reinforced polymer laminate for strengthening reinforced concrete beams in shear: a review
    MBS Alferjani, AA Samad, BS Elrawaff, N Mohamad, M Hilton, AAS Saiah
    Int. Refereed J. Eng. Sci 2 (2), 45-53 2013
    Citations: 16

  • Shrinkage of Malaysian palm oil clinker concrete
    MH Ahmad, NM Noor, SH Adnan
    Proceedings of the International Conference on Civil Engineering Practice 2008
    Citations: 16

  • Experimental and numerical investigation of the residual strength of steel-composites bonded joints: effect of media and aging condition
    S Sugiman, PD Setyawan, S Salman, H Ahmad
    Composites Part B: Engineering 173, 106977 2019
    Citations: 15

  • XFEM modelling of single-lap Kenaf fibre composite hybrid joints under quasi-static loading
    LS Yee, H Ahmad
    Plastics, Rubber and Composites 48 (2), 48-56 2019
    Citations: 15

  • Mix design of palm oil fiber concrete
    MH Ahmad, MN Nurazuwa
    Proceedings of the International Conference on Civil Engineering 2008
    Citations: 15

  • Strength development of lightweight Styrofoam concrete
    MH Ahmad, LY Loon, NM Noor, SH Adnan
    International Conference on Civil Engineering (May 2008) 2008
    Citations: 13

  • Stress distribution study on multi-holes configurations in woven fabric kenaf composite plates
    K Supar, H Ahmad
    IOP Conference Series: Materials Science and Engineering 271 (1), 012005 2017
    Citations: 12

  • XFEM modelling of multi-holes plate with single-row and staggered holes configurations
    K Supar, H Ahmad
    MATEC Web of Conferences 103, 02031 2017
    Citations: 12

  • Chemical attack of Malaysian pozzolans concrete
    MH Ahmad, NM Noor
    Journal of Science and Technology 1 (1) 2009
    Citations: 12

  • Mix design of styrofoam concrete
    MH Ahmad, RC Omar, MA Malek, NM Noor, S Thiruselvam
    Proceedings of ICCBT2008 2008
    Citations: 12

  • The effects of woven fabric Kenaf FRP plates flexural strengthened on plain concrete beam under a four-point bending test
    Z Omar, S Sugiman, MM Yussof, H Ahmad
    Case Studies in Construction Materials 17, e01503 2022
    Citations: 11