Behavior Of Flowable High Strength Concrete Repair Material For Sustainable Engineering Construction

Steel fibers in concrete is known for its potential ability to enhance the concrete material for increasing their flexural toughness, energy dissipation and have high impact resistance for many structural applications especially in building repairs and other civil engineering works

Pseudo-ductile Braided Composite Rods (BCRs) produced by braidtrusion

Braided composite rods (BCRs) are being successfully used as replacement of steel for strengthening of beams, columns, bridges and other civil engineering structures. In this research work, braided composite rods were produced through “braidtrusion” process reinforced with glass, glass/steel and basalt/steel hybrid fibres. Tensile testing have been conducted to evaluate the Pseudo-ductile behaviour. The results show that compared to 100% glass fibre BCRs, BCRs which has glass/steel or basalt/steel hybrid modified the tensile behaviour from linear (fragile) to non-linear (ductile).(undefined

Comparison of bridge design in Malaysia between American codes and British codes

The design of a highway bridge, like most any other civil engineering project, is dependant on certain standards and criteria. Naturally, the critical importance of highway bridges in a modern transportation system would imply a set of rigorous design specifications to ensure the safety and overall quality of the constructed project. By general specifications, we imply an overall design code covering the majority of structures in a given transportation system.In the United States bridge engineers use AASHTO’s standard Specification for Highway Bridges and, in similar fashion or trends, German bridge engineer utilize the DIN standard and British and Malaysia designers the BS 5400 code. In general, countries like German and United Kingdom which have developed and maintained major highway systems for a great many years possess their own national bridge standards. The AASHTO Standard Specification, however, have been accepted by many countries as the general code by which bridges should be designed. In this research study, investigation and comparisons using codes of practices for bridge design in Malaysia is done . American codes has been choosen as an alternative to British codes in design of bridge, followed by comparison in term of structure component performance due to seismic loading. The purpose is to investigate the performance of existing bridge in Malaysia due to seismic resistant. Thus, the bridge performance over the safety condition and structure integrity while using both codes of practices, American and British Codes is identified

HKU's double professional civil engineering and law programme

The scale and complexity of civil engineering projects are increasing exponentially. Coupled with the growing trend of globalisation, the demand for high-calibre civil engineers who are also knowledgeable in legal matters is increasing. Driven by an aspiration to prepare civil engineering graduates with a solid foundation in both civil engineering and law, The University of Hong Kong has developed the first 5-year credit-based double professional degree programme in Hong Kong, which leads to the award of the degrees of Bachelor of Engineering in Civil Engineering (Law) and Bachelor of Laws. The considerations, development process and launching details of the programme are presented in this paper. The students admitted to date perform better academically than other civil engineering students on civil engineering courses. However, they do not perform as well as law students and other law-related double-degree students.published_or_final_versio

Indoor multipath effect study on the Locata system

GNSS has become one of the most wide- spread measurement technologies, allowing cm-level positioning accuracy using RTK or Network RTK. Unfortunately, the system’s major drawbacks are the requirement for a clear view of the sky and accu- racy dependent on the geometric distribution of the satellites, not only varying throughout the day but also prone to location specific problems. With wide- spread utilisation of GNSS for monitoring of man- made structures and other civil engineering tasks, such shortcomings can be critical. One of possible solution is the deployment of a sup- porting system, such as Locata – a terrestrial posi- tioning technology, which mitigates the need for a clear view of the sky and provides system integrity control. This paper, part of the proposed integration feasibil- ity study, presents Locata performance indoors, its capacity and mitigation methods

Near-surface seismic reflection applications

Nonintrusive methods of gaining knowledge about the Earth’s subsurface comprise several of the procedures used routinely in near-surface seismology, including reflection, refraction, and surface-wave analysis. During the early 1980s the advent of digital engineering seismographs designed for shallow, high-resolution surveys spurred significant improvements in engineering, mining, and environmental reflection seismology. Commonly, the reflection method is used in conjunction with other geophysical and geological tools and a well-planned drilling verification effort. To the extent that near-surface seismic methods can constrain shallow stratigraphy, geologic structure, engineering properties, and relative permeability, they are useful in groundwater, mining, environmental site characterization, and other civil engineering applications. Much of the improvement in shallow seismic surveys is related to advancements in instrumentation. Challenges remain, however, in developing ways to process near-surface seismic data sets that may contain attributes not seen in deeper petroleum surveys

A Computational Procedure for Generating Specimens of BIM and Point Cloud Data for Building Change Detection

The potential for automated construction quality inspection, construction progress tracking and post-earthquake damage assessment drives research in interpretation of remote sensing data and compilation of semantic models of buildings in different states. However, research efforts are often hampered by a lack of full-scale datasets. This is particularly the case for earthquake damage assessment research, where acquisition of scans is restricted by scarcity of access to post-earthquake sites. To solve this problem, we have developed a procedure for compiling digital specimens in both pre- and post-event states and for generating synthetic data equivalent to which would result from laser scanning in the field. The procedure is validated by comparing the physical and synthetic scans of a damaged beam. Interpretation of the beam damage from the synthetic data demonstrates the feasibility of using this procedure to replace physical specimens with digital models for experimentation and for other civil engineering applications

Local Nanostructured Ashes Synthesized by Incineration, Pulverization and Spectrophotometric Characterization of Solid Wastes Ashes for Use as Admixtures in Soil Stabilization

Nanostructured ash materials were locally synthesized by the spectrophotometric characterization method and applied in the stabilization of lateritic soils to evaluate the effect of the ashes on the strength properties of the lateritic soil. The ashes are products of the incineration and complete pulverization of some selected biodegerable solid waste materials. Results showed that the ashes were nanomaterials by size, reactive surface, absorbance and texture. And the studied soil was found to be an A-2-7 soil, according to AASHTO classification method. These ash materials were mixed with the soil in varying proportions of 3%, 6%, 9%, 12% and 15% by weight of dry soil and their respective effects on the soil evaluated. The California bearing ratio and unconfined compressive strength results improved remarkably. The results showed that the ash materials are good admixtures in the stabilization of lateritic soils in pavement sub-grade and sub-base construction and other civil engineering works. These materials are secured free of cost and by implication reduced the cost of stabilizing the lateritic soils hence a cost effective stabilization was achieved