Crack Monitoring in Asphalt Pavements: Literature Review
Article in Press
Monitoring of cracks has become a major challenge to maintenance and management agencies of pavement. Research on crack monitoring has also been massively carried out, nevertheless, mostly in describing the features and evaluating the severity of existing cracks in pavement. Mechanisms of crack initiation and estimation of the emerging time of crack has induced research interest among industry insiders. The degradation of...
Article in Press
This study assessed the maintenance management processes employed by higher educational institutions for their buildings using University of Uyo as case Study. To achieve this, the study examined the methods used in execution of maintenance works, assessed the methods of estimating annual maintenance budget and evaluated the methods of receiving maintenance complaints/request in the university. This was with a view to...
Study on Effect of Partial Replacement of Cement by Cattle Bone Ash in Concrete Property
Article in Press
The study was aiming to investigate the effect of partial replacement of cement by cattle bone ash (CBA) in a concrete property. Complete silicate analysis of CBA shows that the material has high calcium oxide content (43.26%) which is the major oxide compound of cement. A C-25 concrete grade was selected for this study. The Normal consistency, setting time, soundness of cement paste, slump, compressive strength, and...
Correlation between Level of Service and Air Pollution on Provincial Roads in West Java, Indonesia
Article in Press
The level of service (LoS) on provincial roads in West Java, the lowest score is 0.39, namely the Kosambi - Curug road section with the characteristics of free flow, low volume, and high speed. Meanwhile, the highest LoS was 1.87, namely the Narogong - Bekasi road section, which was characterized by obstructed traffic flow, low speed, volume above capacity, and frequent congestion. Air pollution on provincial roads...
Construction Time Prediction Model For Public Building Projects In Addis Ababa, Ethiopia
Article in Press
Construction time prediction is a very crucial part of project planning, as several key decisions are based on the estimated durations. Funding, financing, and resource allocation decisions are based on the early estimated durations. This research was aimed to develop a construction time prediction model for public building projects in Addis Ababa, Ethiopia. The study incorporated a total sample of fifty-six public...
Expermental study on fly-ash based geopolymer concrete
Article in Press
The current investigation into the manufacture of Geopolymer concrete using industrial by products such as abundant worldwide availability of fly ash provides the potential to use this by- product of burning coal as a replacement for concrete production by OPC. Details about the Experimental System with checking of the fundamentalproperties of both geop olymer concrete and ordinary Portland cement concrete.The basic...
Study and Analysis of Velocity of Waves through Permeable Breakwaters
Article in Press
The interactions of linear waves with vertical wall and half pipes suspended breakwaters are investigated by a Reynolds Averaged Navier-Stokes (RANS) flow solver with a Volume of Fluid (VOF) surface capturing scheme (RANS-VOF) model. By validation with previous study koraim 2012 shows good agreement between the present numerical models and previous experimental models. The relationship between kt, kr, kl and D/h for...
Evaluation of compressive strength of Sand Crete blocks containing termitarium clay
Article in Press
The research was carried out to investigate and compare the equivalent strength replacement of manually compacted blocks using varying percentage replacement for sand with termitarium silty fine ranging from 0%, 6%, 12%, 18%, 24%, 30%, and 36%. The termitaruim silty clay was collected from a different depth of 5 cm and above in Calabar, Cross River State, Nigeria. A mix ratio of 1: 6: 0.55 was adopted via batching by...
Comparison of the Velocity of the Waves through Different Breakwaters
Article in Press
The interactions of linear waves with vertical wall and half pipes suspended breakwaters are investigated by a Reynolds Averaged Navier-Stokes (RANS) flow solver with a Volume of Fluid (VOF) surface capturing scheme (RANS-VOF) model. By validation with previous study (koraim (2012) shows good agreement between the present numerical models and previous experimental models. The relationship between kt, kr, kl and D/h for...
Article in Press
Project cost and its control is important management responsibilities. After construction begins, the project cost control management system retrieves costs, labor and equipment hours, and production quantities from the job site as the work progresses. This information is used in two important ways. One is to develop production and cost data for labor and equipment in a form suitable for estimating the cost of future work....
Influence of holes formed by pulling out existing piles on the surrounding ground
Article in Press
The teardowns of social infrastructures, including civil engineering structures, have been increasing due to the aging of these structures, which were built in a period of high economic growth, and to a decrease in their utilization due the recent drop in population. The number of existing pile foundations being pulled out has gradually become a lot more than that of pile foundations being newly installed. However, after...
Behavior of Jointed Rock Mass on Strength under Uniaxial Loading Condition
Article in Press
The focus of this study is to present data on the contribution for assessing uniaxial compressive strength of a jointed rock mass which will enable one to estimate the relevant strength of the jointed rock mass of similar category of materials. Artificial rock samples were prepared by plaster of Paris (POP) with fine sand. Data were obtained from eight batches of an experiment conducted in the laboratory. The data...
Article in Press
The construction industry plays an important role in the development of nations through which society achieves its goals of urban and rural development. But construction delays played a significant role to retard the achievement of these goals. Therefore, this study was conducted to identify the major causes of delays and its’ effects; and proposing methods of minimizing delays in construction projects. Top causes of...
Categorisation of road construction projects’ cost overruns causes using factor analysis
Article in Press
Cost overruns is a major problem in the construction industry and threats to the financial freedom of any country. Considering that Nigerian roads are constructed at very high cost, cost overruns could lead to significant reduction in the quality and number of projects that can be implemented. A vast number of cost overruns causes have been identified by various studies. This study aims at categorising the causes in order...
Causes, effect and solution to abandonment of building projects in Osun state, Nigeria
Article in Press
This paper is to determine the causes and effects of abandoned building projects and also to propose possible solutions. Abandoned building projects are projects that are once initiated and later stopped due to one reason or the other and such projects are waste to individuals and the nation in general. Therefore, the aim of this paper is to determine the causes and effects of abandoned building projects and to propose...
DURABILITY OF ALKALI ACTIVATED COMPOSITES IN SULPHATE EXPOSURE
Article in Press
In this program durability of alkali activated slag mortars exposed to sulphuric acid was investigated. The alkali and silicate content of the activator solution was kept constant. In this program physico-mechanical properties of alkali activated slag mortars with varying alkali content was investigated. The alkali content of the activator solution was varied keeping the silicate content constant to determine various...
Article in Press
The paper presents results of investigation on the influence of different volume fractions of polyethylene fibre on the toughness and ductility characteristics of normal strength concrete beams. Nine conventionally reinforced concrete beams measuring 150mm×200mm×2500mm containing 0.25%, 0.50% and 1.0% of polyethylene fibres were cast and tested under a two-point symmetrical loading system using an Avery Denison universal...
Durability of Alkali Activated Mortars Exposed to Sulphuric acid
Article in Press
In this program durability of alkali activated slag mortars exposed to sulphuric acid was investigated. The alkali and silicate content of the activator solution was kept constant. Durability of the alkali activated ground granulated blast furnace slag (AAGGBFS) mortars was assessed by investigating the change in weight, change in specific gravity, change in water absorption, , change in compressive strength before and...
Article in Press
This study investigates workability and the compressive strength properties of self- compacting concrete incorporating palm kernel shell ash (PKSA) as mineral additive for partial cement replacement.. The mix design was based on the iterative method where solid constituents were adjusted while water and super plasticizer contents were fixed to produce optimum viscosity and flowability. All mixes were designed to achieve...
Article in Press
Natural fibers composites are low-cost fibers with high specific properties, low density and eco-friendly. The development of advanced bio composite materials made is increasing in the world. It will be an alternative way to develop the bio-composites which can be particularly used for daily needs of common people whether it is house hold furniture, house and light weight car components and other equipment. This effort to...
A simple engineering soil surface vibration prediction method
Article in Press
In urban areas where the infrastructure is dense and construction of new structures is near existing and sensitive buildings, frequent vibrations caused by human activities occur. Generated waves in the soil may adversely affect surrounding buildings. These vibrations have to be predicted a priori by using currently available knowledge of the soil dynamics. In order to make a good prediction of the soil surface vibration,...
FACTORS AFFECTING THE BIDDING DECISION BY CONTRACTORS IN CONSTRUCTION PROJECTS OF PAKISTAN
Article in Press
in today’s highly competitive construction industry, companies must be capable to deal with various bidding situations successfully. When a company receives tender invitation the first step that needs to consider is to decide either to bid or not bid for a project, because it is a crucial decision for the contractor sustainability in the construction industry. There are various factors that affect the contractor...
Article in Press
Concrete is the most popular construction material worldwide. More than 50% of construction worldwide use concrete materials, mainly because of its versatility and economy compared to steel in relation to total height of building. The final output of the concrete material is, however, affected by factors including the rock type and its attendant physio-mechanical properties. This paper seeks to investigate the effect of...
Article in Press
This study presents the results of the influence of coarse aggregate size and superplasticizer on drying shrinkage and compressive strength of laterized concrete. The compressive strength was determined on cubes of 150 × 150 × 150 mm. A total of 3 cubes were cast for each test specimen, different sets for 7, 14, 21 and 28 days bringing the total number of cubes cast to 48. The specimens were cured and subjected to...
Laboratory investigation of plantain peel ash as stabilizer of lateritic soil for road construction
Article in Press
Usually, the costs of conventional additives (portland cement, lime, etc) for stabilizing roads are all on the high side. However, plantain peels ash (PPA) is an agricultural waste obtained from plantain. The lateritic soil sample used in this research was obtained from a borrow pit, laboratory tested and classified as A-7-5(3) [AASHTO classification]. It was then stabilized with varying percentages of PPA (2, 4, 6, 8 and...
Article in Press
An attempt was made to investigate the suitability of sandstones quarry spoils from Amasiri, Southeastern Nigeria for use as subbase in highway construction. Fifteen samples were subjected to some geotechnical analysis using British standards. From the results, the plasticity indexes are lower than the maximum value of 25% recommended for sub-grade and lower than 12% maximum for use as sub-base materials for roads and...
Page 1 of 1, showing 26 records out of 26 total, starting on record 1, ending on 26
