Abbreviation: J. Civ. Eng. Constr. Technol.
Start Year: 2010
Page 1 of 7, showing 20 records out of 124 total, starting on record 1, ending on 20
DOI: 10.5897/JCECT2017.0457[Article Number: 8A096C265741]
High performance concrete is one of the most commonly used materials in non-standard building structures. Aside from the basic components used for its manufacture (water, cement, fine and coarse aggregates), other components such as fly ash, blast furnace slag and superplasticizers are incorporated. In the present study, two types of additives and two types of microsilica have been used. The proportions of all the... Read more.
DOI: 10.5897/JCECT2016.0423[Article Number: 45B626264930]
This research work investigates and evaluates the effects of varying lime composition on the compressive and flexural strength of compressed silicate limestone bricks and compares the results to the local blocks and bricks used in the Kenya market. The mix ratio used to make limestone bricks was binder (cement replaced with hydrated lime powder), sand and water cement in ratio of 1:5:0.4. The results showed that an... Read more.
DOI: 10.5897/JCECT2017.0450[Article Number: 97BC2B264932]
The paper reports results of study on standard masonry mortar containing sand and sawdust as aggregates in a mix proportion of 1:3 and water-cement ratio of 0.55. A modified mortar of same design mix proportion (1:3) but varying water/cement ratio and constant slump of 74.3 mm to achieve higher workability was also evaluated. Six different percentages (5, 10, 15, 20, 30 and 50%) of sand replacement were investigated.... Read more.
DOI: 10.5897/JCECT2017.0439[Article Number: 904254664830]
This paper investigated construction materials-batching behaviour of artisans in the informal construction sector in Ghana. The research was conducted in three major towns across three regions namely the Volta, Greater Accra and Eastern regions of Ghana. A quantitative data collection approach was adopted as the primary methodology for gathering the data from the target population using cluster-sampling technique to... Read more.
DOI: 10.5897/JCECT2017.0434[Article Number: 1322C6E64399]
A reinforced sand beam was tested at the laboratory, in order to understand the behaviour of the sand during the failure mechanism. A series of structural tests on the sand and on the reinforcement material were conducted first, and then a reinforced sand beam was constructed in the laboratory. The results were checked theoretically and numerical simulations were also carried out, to examine the moment stiffness of the... Read more.
DOI: 10.5897/JCECT2016.0425[Article Number: DF652CB63404]
Concrete is a very popular artificial material on earth and it is one of the most used construction material in building technology. Self-Compacting Concrete (SCC) is a highly workable concrete designed such that it is able to be placed in any formwork without external compaction or vibration. It consolidates and fills voids by the help of its self-weight even in the presence of very dense reinforcement. This paper... Read more.
DOI: 10.5897/JCECT2016.0421[Article Number: 10C27BC63356]
Recycling can be a viable option in the waste management of many materials. Noting the increasing volumes and difficulty in the disposal of wastes from rubber tyres, this paper discusses test results of use of recycled tyres in concrete for possible application in the construction industry. In 2008, around one billion end-of-life tyres (ELTs) were being produced globally each year. As a possible means of disposing the... Read more.
DOI: 10.5897/JCECT2016.0407[Article Number: 06383BC63114]
The study of fatigue crack behavior in welded structures using AE technique during crack initiation and propagation is discussed in this paper. This was achieved both theoretically and experimentally using four point bending testing. A new averaging index known as AE intensity was used to analyze the fatigue crack initiation conditions in the specimen. A theoretical model based on acoustic emission energy rate was... Read more.
DOI: 10.5897/JCECT2016.0413[Article Number: F81F0A561364]
This paper presents nonlinear numerical simulation of air blast loading with an over pressure level (500 kg TNT) with a different standoff distance of 10, 20, and 50 m to evaluate the effectiveness of Fluid Viscous Dampers (FVD) as new strengthening techniques to reduce blast loading responses on the existing reinforcement concrete buildings. Taking into consideration, most of the security buildings in Middle East,... Read more.
DOI: 10.5897/JCECT2015.0371[Article Number: 93BCE7259491]
In order to increase efficiency and sustainability, it is of crucial importance to have an in depth understanding and investigation of travellers’ behaviour, preferences, attitudes and choices. In this context, this paper investigates car-sharing as a mode for travel for work trips in Tabuk city for both male and female travellers. Tabuk is one of the regional capitals situated in north-western Saudi Arabia, which... Read more.
DOI: 10.5897/JCECT2015.0395[Article Number: AD04D2A58650]
In this study, the effects of partial replacement of ordinary Portland cement with natural polymers on selected physical and mechanical properties of cement-bonded rattan composites was investigated. Fibrous particles of Laccosperma secundiflorum rattan cane species were mixed with cement mortar at two levels, that is, 2.5 and 5.0%. For experimentation, Portland cement was partially replaced at four levels, first with... Read more.
DOI: 10.5897/JCECT2015.0394[Article Number: D848AE457695]
This study investigated the influence of beam depth with varying longitudinal reinforcement without shear reinforcement. Size effect, which is described here in as the decrease in shear strength with the increase in the depth of members, is not evaluated sufficiently enough. To this end, fifteen palm kernel shell (PKS) reinforced concrete beams varying from 150 to 300 mm were tested to investigate their size effects on... Read more.
DOI: 10.5897/JCECT2015.0379[Article Number: 15EEFC357741]
There are many human injuries induced by occupational accidents in construction industries. Determination and analysis of construction accidents' contributing factors is a good way to accidents' prevention and reduction. Therefore, this study was done in view of identification and analyzing factors related to frequency and severity of construction accidents and injuries in the big construction industries. This... Read more.
DOI: 10.5897/JCECT2015.0383[Article Number: 5BEA81556463]
This paper presents comparative study of design procedure for steel moment resisting frames with supplemental damping using performance-based design constraints under earthquake ground motions. The first design example is based on a 4-story steel moment frame building with velocity dependent dampers; the second design example is based on the same building with displacement dependent dampers. The primary... Read more.
DOI: 10.5897/JCECT2015. 0382[Article Number: 74509AF55757]
The main purpose of a building is to ensure thermal comfort to its occupants. The present work is a contribution to the improvement of the comfort and relates to the characterization of local materials used in Benin. The authors determined the mass diffusivity of the wood composite material and cement-stabilized laterite, as a function of its water content. The experimental device is designed around a magnetic... Read more.
DOI: 10.5897/JCECT2015.0364[Article Number: 25DB01753581]
Green Building Practices (GBPs) are gradually receiving worldwide recognition and uptake. It is argued that facilities built according to the GBPs, called green buildings are not only environmentally friendly, but also, economically more productive than other comparable ordinary ones. In the latter regard thus, green buildings’ periodical rental premiums, finished property values and energy efficiencies, amongst... Read more.
DOI: 10.5897/JCECT2014.0309[Article Number: D3AB42C53582]
This study focuses on the quality of water at Bosso Lake during the rainy season months of August to October. Water samples collected each month were examined for their physiochemical and bacteriological attributes. All the samples were obtained during the peak of the rainy season while traits such as nitrate concentration, pH values, total dissolved solids (TDS), total hardness, iron concentration, suspended solids,... Read more.
DOI: 10.5897/JCECT2014.0344[Article Number: 5CD69A453152]
Several materials such as tuff and Tripoli which is naturally occurring and industrial by-products wastes as high calcium ash and slag were investigated as cement substitutes in this paper. Compressive strength of various standard mortar samples have been tested at 7 and 28 days. The obtained results show that these materials have improved the properties Ordinary Portland Cement (OPC) concrete. It was found that an... Read more.
DOI: 10.5897/JCECT2015.0367[Article Number: B87FA4153161]
This paper evaluates the shear strength of simply supported palm kernel shell (PKS) concrete and normal weight concrete (NWC) beams subjected to four-point loading. The primary variable of the investigation was evaluation of shear capacity of reinforced PKS concrete and NWC beams with and without shear reinforcement. Four pairs of reinforced concrete (RC) beams with similar geometrical properties were designed and... Read more.
DOI: 10.5897/JCECT2015.0357[Article Number: CDEA8F552269]
Developing a predictive model for complex shear modulus of the asphalt binder is a complex technique due to several factors that affect the model’s estimating capability, such as rheological properties and test conditions. Several models were developed in this regard; some of these are linear regression models and relate to rheological properties of asphalt binder. A computational model based on artificial neural... Read more.
Page 1 of 7, showing 20 records out of 124 total, starting on record 1, ending on 20