A review on performance of waste materials in self compacting concrete (scc)

Self-compacting concrete (SCC) was first developed in late 80’s in Japan. SCC is well known for its self-consolidation and able to occupy spaces in the formwork without any vibration and become new interesting topic in Construction and Building Materials Research. There were various SCC researches that have been carried out in Turkey, Malaysia, Thailand, Iran, United Kingdom, Algeria, and India.The aim of this review is to summaries the alternative material used in the mix design from 2009 to 2015 through available literature. It hascommon materials such as Limestone Powder (LP), Fly Ash (FA), Silica Fume and Granulated Blast Furnace Slag (GBFS). While there are many alternative or recycled material can be used in producing SCC. This review only focus on waste material fromMarble Powder (MP), Dolomite Powder (DP), Crump Rubber (CR), Recycled Aggregate (RA) and Rise Husk Ash (RHA).Each type of materialshassimilarity effect in fresh and hardened state of SCC. Therefore, this paper will provide significant and useful information to those new to SCC and fellow researchers for future studies on SCC

A review on performance of waste materials in self compacting concrete (scc)

Self-compacting concrete (SCC) was first developed in late 80’s in Japan. SCC is well known for its self-consolidation and able to occupy spaces in the formwork without any vibration and become new interesting topic in Construction and Building Materials Research. There were various SCC researches that have been carried out in Turkey, Malaysia, Thailand, Iran, United Kingdom, Algeria, and India.The aim of this review is to summaries the alternative material used in the mix design from 2009 to 2015 through available literature. It hascommon materials such as Limestone Powder (LP), Fly Ash (FA), Silica Fume and Granulated Blast Furnace Slag (GBFS). While there are many alternative or recycled material can be used in producing SCC. This review only focus on waste material fromMarble Powder (MP), Dolomite Powder (DP), Crump Rubber (CR), Recycled Aggregate (RA) and Rise Husk Ash (RHA).Each type of materialshassimilarity effect in fresh and hardened state of SCC. Therefore, this paper will provide significant and useful information to those new to SCC and fellow researchers for future studies on SCC

Relationship between ae signal strength and absolute energy in determining damage classification of concrete structures

The most efficient tools in real monitoring system is acoustic emission (AE). This technique can be used to identify the damage classifications in RC structure. This research paper will mainly focus on the utilization of signal strength and Absolute energy (AE signal) in determining on the damage quantification for RC beam subjected to cyclic load test. The beam specimens size (150 X 250 X 1900) mm were prepared in the laboratory and tested with the four point bending test using cyclic loading together with acoustic emission monitoring system. The results showed that the analysis of AE data parameters is capable of determining the damage classification in concrete structures and the data corresponded to the visual observations during the increased loading cycle

Integration of cellular network and wireless LAN

This study discusses the significant problems accommodated in the integration of cellular networks and WLANs to the service providers, end-users, etc. This study aims about the current complications, current challenges, substantial significance, future implementations, and the future challenges related to the integration of cellular networks and WLANs. We are performing the research to specifically identify the issues of the integration and how to eliminate these problems to produce a network that delivers higher productivity to users in terms of bandwidth, coverage area, etc. The integration of networks is now in high demand as a diverse range of mobile devices, applications requires the network to be integrated in order to utilize the service anywhere, anytime, and at a reasonable cost. The crucial component in integration is the handoff process that takes place when the user moves from one network to another without experiencing any interruption. Some issues must be considered in all the layers of the protocol stack in order to contribute a breath-taking performance to the end-users who are central to the networks. This study is carried out by referring to past written articles, documents, records, by other researches. This study identifies the problems and issues related to the protocol stack, provides the readers with the importance of integration, and the discussion about this integration of the network

Awareness of the Installation the Lightning Protection System (LPS) by Using Structural Bonding Method in Malaysia

Structural Bonding Method (SBM) is one type of Lightning Protection System (LPS), design to protect human, structures, contents inside structures, electrical equipment, transmission lines and other from the lightning flash. Besides, SBM is a standard LPS that comply with technical standards or codes of practice or called as conventional Lightning Protection System. In order to know the level of the Awareness of the Installation LPS by using SBM in the building among Civil Engineering Consultants, conducting survey need to be done. This paper presents the Research Design and Research Strategy in conducting the survey. It is explaining about the way before conducting the survey which are determine the population of sample (Consultant Company at Northern Region Area), samples of respondents (Civil Engineer at Consultant Office with the number of sample is 40), data collecting process, structure of the questionnaire form and the way in analysis the data. After the analysis the data, the result of the level of awareness in the Installation of LPS by using SBM are consider as moderate level

Potential of utilizing asphalt dust waste as filler material in the production of sustainable Self Compacting Concrete (SCC)

Waste materials from many industries are widely used in the production of sustainable green concrete. Utilizing asphalt dust waste (ADW) as a filler material in the development of self-compacting concrete (SCC) is one of the alternative solutions for reducing environmental waste. SCC is an innovative concrete that does not require vibration for placing and compaction. However, there is limited information on the effects of utilizing ADW in the development of SCC. Therefore, this research study examines the effects of various w/b ratios (0.2, 0.3 and 0.4) and differing amounts of ADW (0% to 50%) on the rheological properties of fresh state concrete. The compressive strength of the SCC was tested only for 7 and 28 days as preliminary studies. The results revealed that mixtures MD730, MD740 and MD750 showed satisfactory results for the slump flow, J-Ring, L-Box and V-Funnel test during the fresh state. The compressive strength values obtained after 28 days for MD730, MD740 and MD750 were 35.1 MPa, 36.8 MPa and 29.4 MPa respectively. In conclusion, the distribution of materials in mixtures has significant effect in achieving rheological properties and compressive strength of SCC

Checklist of bat flies (Diptera: Nycteribiidae and Streblidae) and their associated bat hosts in Malaysia

The number of publications on bat flies of Malaysia suggests that this group of parasitic dipterans is understudied. From April 2011 to September 2013, we surveyed 10 localities from seven states in Malaysia with the main objective to compile a checklist of bat flies. As a result, a total of 15 species of bat flies were recorded from 24 species of hosts. Our surveys indicated that there is a correlation between the number of bat species and the number of bat flies species recorded due to the host specific nature of bat flies

Awareness of the Installation the Lightning Protection System (LPS) by Using Structural Bonding Method in Malaysia

Structural Bonding Method (SBM) is one type of Lightning Protection System (LPS), design to protect human, structures, contents inside structures, electrical equipment, transmission lines and other from the lightning flash. Besides, SBM is a standard LPS that comply with technical standards or codes of practice or called as conventional Lightning Protection System. In order to know the level of the Awareness of the Installation LPS by using SBM in the building among Civil Engineering Consultants, conducting survey need to be done. This paper presents the Research Design and Research Strategy in conducting the survey. It is explaining about the way before conducting the survey which are determine the population of sample (Consultant Company at Northern Region Area), samples of respondents (Civil Engineer at Consultant Office with the number of sample is 40), data collecting process, structure of the questionnaire form and the way in analysis the data. After the analysis the data, the result of the level of awareness in the Installation of LPS by using SBM are consider as moderate level

KY (Kiken Yochi=predict hazard) in working habit; assessment of its implementation way and effectiveness in manufacturing factory / Mohd Isham Ismail

This research aims to know and analyze the application training of Occupational Health and Safety (OHS), focus on Kiken Yochi Training at a car manufacturing plant located at Serendah, Selangor. “Kiken Yochi” or KY is an act of predicting danger that is one of the key elements of safety. The study was conducted using research descriptive method that gives an overview of the programming of Kiken Yochi Training at Company A Manufacturing Sdn Bhd (Company A). Data obtained from direct observation to the field, conducting interviews to related parties and then do literary studies comparing data with prevailing laws and theories. As a prevention effort of work accident at Company A, Kiken Yochi Training Program is one of the activities being done for improving the hazard identification and risk assessment skills, so that workers can identify the dangers existing around workplace and then taking the correct measures. In order to be able achieving the effectiveness and efficiency in Kiken Yochi Training, several processes being implemented, i.e. identification of training needs, training program planning, development of training programs and evaluation of training programs. Results of the assessment on the implementation of KY activities, it has concluded to have achieved the target and objectives but there are still having room for improvement, and recommendation measures have been proposed. Keywords: Kiken Yochi Training, KY, Hazard, Risk Assessmen

A Preliminary Modified Volumetric Mix Design for Self-Compacting Concrete (SCC) by Utilizing Asphalt Dust Waste (ADW)

The construction of asphalt roads has been commonly used as for infrastructure development since ancient times. The production of asphalt using drum mix plants has created powder waste in the premix batching plant industry. It consists of very fine powders and causesproblems to the environment today. However, powder waste can be successfully and economically utilized in the development of self-compacting concrete (SCC). The aim of this study is to evaluate the fresh properties and the compressive strength of SCC containing asphalt dust waste (ADW). For this purpose, a simple modified volumetric mix design approach based on the Okumura Method was adapted to produce SCC mixes. In order to obtain this SCC, a series of SCC mixes with a specific water/binder ratio (0.3), superplasticizer ratio (2%) as well as different amounts of aggregate, sand and ADW were prepared. Fresh properties of the SCC mix were tested using tests such as slump-flow, J-Ring, L-box and V-funnel which showed satisfactory results for MD840 and MD850. The compressive strength for MD840 and MD850 after 28 days was 40.8 MPa and 34.7 MPa respectively. In conclusion, the simple modified volumetric mix design method by utilizing ADW in SCC can be suggested for the development of SCC