• Active control of properties of fresh and hardening concrete 

  De Schutter, Geert; Abidi, Imene; Korda, Eleni; Boshoff, W.P. (Billy); Olonade, Kolawole Adisa; Snoeck, Didier; Muthukrishnan, Shravan; Zhang, Yiyuan; Tao, Yaxin; Ghodke, Swapnil Balasaheb; Mohan, Manu Kurungod; Yardimci, Mert Yücel; Jiao, Dengwu; Sanjayan, Jay (RILEM Technical Letters, 2024-09)

  Concrete mixtures have an optimized mix design in view of attaining desired properties. However, after mixing, during further processing, it is typically not possible to further adjust the performance of the fresh and ...
• Improvements to the hydraulic performance of culverts under inlet control conditions by optimisation of inlet characteristics 

  De Jager, Leon; Van Dijk, Marco (MDPI, 2024-06)

  With renewed interest in the optimisation of the hydraulic performance of new and existing culverts, particularly relevant to South Africa’s evolving road network and anticipated climate-induced rainfall changes, this ...
• Difficulties monitoring short-term ageing in thin surfacing layers using asphalt concrete 

  O'Connell, Johan; Steyn, Wynand Jacobus Van der Merwe; Maina, J.W. (James) (Elsevier, 2024-12)

  Ageing has a profound effect on pavement performance, especially regarding cracking. Due to budgetary constraints, South Africa has pioneered the use of thin asphalt concrete layers. The research described in this paper ...
• Spalling of concrete in fire-an overview and local relevance 

  Van der Merwe, Johann E. (South African Institution of Civil Engineering, 2023-06)

  Concrete has traditionally been considered as a material with favourable fire resistance. The development of modern concretes with low permeability has, however, resulted in the increased occurrence of spalling when ...
• Experimental comparison of active seismic surface wave tests on shallow and deep bedrock sites 

  Ntaote, Mosito; Heymann, Gerhard (South African Institution of Civil Engineering, 2023-09)

  Active seismic surface wave tests are tests during which signals are generated by artificial sources such as sledgehammers, drop weights and fixed or variable frequency shakers. A number of active seismic surface wave ...
• Advanced numerical modelling of the nonlinear mechanical behaviour of a laterally loaded pile embedded in stiff unsaturated clay 

  Braun, Kirsten Theresia; Bakas, N.; Markou, George; Jacobsz, Schalk Willem (South African Institution of Civil Engineering, 2023-06)

  Capturing and understanding the ultimate limit state behaviour of reinforced concrete piles embedded in soil requires the use of advanced tools or the performance of expensive tests. An experiment was performed where ...
• Centrifuge modelling of ultra-thin high strength steel fibre reinforced concrete pavements 

  Smit, Martha S.; Kearsley, Elsabe P. (ICE Publishing, 2023-01)

  Ultra-thin continuously reinforced concrete pavement (UTCRCP) is an innovative pavement type that consists of a 50 mm high strength steel fibre reinforced concrete (HS-SFRC) layer overlain on a pavement substructure. ...
• Uniqueness of the normal consolidation line for gold tailings 

  Narainsamy, Yashay; Jacobsz, Schalk; Murison, Ruan A.; Vermeulen, Nicolaas Johannes (ASTM International, 2023-11)

  Depending on the stress state, mine tailings are generally accepted to be susceptible to static liquefaction. A common method to assess the in situ stress state of tailings in relation to static liquefaction susceptibility ...
• Developing predictive models for the load-displacement response of laterally loaded reinforced concrete piles in stiff unsaturated clay using machine learning algorithms 

  Braun, Kirsten Theresia; Markou, George; Jacobsz, S.W. (Schalk Willem); Calitz, D. (Elsevier, 2024-06)

  The design of pile foundations that are expected to develop significant lateral loading is a complex procedure that requires the development of objective and accurate design formulae that will not be based on semi-empirical ...
• Verification of the presence of superabsorbent polymers (SAP) in fresh concrete : results of an interlaboratory study of RILEM TC 260-RSC 

  Wyrzykowski, Mateusz; Schroefl, Christof; Toropovs, Nikolajs; Lura, Pietro; Snoeck, Didier; Bettencourt Ribeiro, António; De Maeijer, Patricia Kara; Moon, Juhyuk; Assmann, Alexander; Igarashi, Shin-Ichi; Klemm, Agnieszka; Almeida, Fernando C.R.; Boshoff, W.P. (Billy); Erk, Kendra A.; Falikman, Vyatcheslav; Agostinho, Livia Borba; Mechtcherine, Viktor (Springer, 2024-04-22)

  New methods are proposed for the verification of the presence of superabsorbent polymers (SAP) in freshly mixed concrete and estimation of SAP quantity. The methods are in general based on flushing concrete with excess ...
• Fibre optic sensing for strain field measurement in geotechnical laboratory experiments 

  Della Ragione, Gianluigi Della; Abadie, C.N.; Xu, X.; Da Silva Burke, Talia Simone; Moller, T.; Bilotta, Emilio (ICE Publishing, 2023-12)

  Strain measurement inside the soil body in three-dimensional (3D) experiments is a real challenge for physical modellers in geotechnics. The use of fibre optic sensing offers the possibility of continuous measurement of ...
• Numerical investigation of fibre optic sensing for sinkhole detection 

  Della Ragione, Gianluigi; Bilotta, Emilio; Xu, Xiaomin; Da Silva Burke, Talia Simone; Moller, Tobias; Abadie, Christelle N. (ICE Publishing, 2024-11)

  This paper forms part of the SINEW(sinkhole early warning) project and continues the work conducted by Möller and co-workers in 2022, where 1g experiments demonstrated the feasibility of using distributed fibre-optic sensing ...
• A case investigation into causes of premature rutting failures in rehabilitated asphalt pavements in Tanzania 

  Anochie-boateng. J.K.; Malisa, John T. (American Society for Testing and Materials, 2023-09)

  Tanzania was faced with high incidences of premature rutting failures on their asphalt pavements. Some pavements experienced failures within one to two years after construction/rehabilitation. The objective of this ...
• Enhanced imaging analysis of aggregates for road and railway applications 

  Anochie-boateng. J.K.; Mvelase, G.M.; Moaveni, Maziar (Sage, 2024)

  The South African pavement community has shown a keen interest in the use of imaging techniques to characterize the morphological characteristics of aggregates used in road and railway construction. This interest arises ...
• Hybrid transfer learning and support vector machine models for asphalt pavement distress classification 

  Apeagyei, Alex; Ademolake, Toyosi Elijah; Anochie-Boateng, J (Sage, 2024)

  Pavement condition evaluation plays a crucial role in assisting with the management of the highway infrastructure. However, the current methods used for assessing pavement conditions are costly, time-consuming, and subjective. ...
• Editorial for special issue “Alkali Activated Cements and Concretes” 

  Kearsley, Elsabe P. (MDPI, 2023-12)

  No abstract available.
• Centrifuge modelling of an expansive clay profile using artificial fissuring to accelerate swell 

  Gaspar, Tiago Alexandre Valentim; Jacobsz, Schalk Willem; Smit, G.; Gens, A.; Toll, D.G.; Osman, A.S. (Elsevier, 2023-01)

  This paper presents the results of a centrifuge study in which swell of an expansive clay profile was induced in the centrifuge. A factor which has previously hindered such research is the time required to induce significant ...
• Effect of surface curing timing on plastic shrinkage cracking of concrete 

  Visagie, J.W.; Moelich, G.M.; Meyer, D.; Kanyenze, S.S.; Kayondo, M.; Boshoff, W.P. (Billy); Combrinck, R. (Springer, 2023-01)

  Surface curing of concrete is known to mitigate potential plastic shrinkage cracking. In this research, water and three curing compounds were used to investigate the efficacy of liquid curing on plastic shrinkage cracking ...
• Implementing capillary pressure control measures to prevent plastic shrinkage cracking in concrete 

  Deysel, Renier Christiaan; Boshoff, W.P. (Billy); Smit, Martha Sophia (Elsevier, 2023-09)

  Plastic shrinkage cracking occurs when fresh concrete is drying and restrained from deformation, which typically results in cracking. The tensile stresses causing cracking result from the negative capillary pressure that ...
• Damage evaluation and mechanisms of textile reinforced concrete during telescopic failure 

  Alexandre, V.J.F.; Boshoff, W.P. (Billy); Combrinck, R. (Elsevier, 2023-11)

  Textile-reinforced concrete (TRC) offers a solution to the drawback associated with the production of cement and its use in construction. It also promotes the design of concrete in a post-cracking stage as the yarns bridge ...

View more