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An Investigation on Effects of Sisal Fiber Reinforced Concrete on Concrete Properties
Meti Bezabih Mekonen,
Garba Wokjira Fayisa
Issue:
Volume 7, Issue 3, June 2022
Pages:
23-29
Received:
9 May 2022
Accepted:
2 June 2022
Published:
16 June 2022
Abstract: One of the additional materials for sustainability and strength of concrete is Fiber Reinforced Concrete. Hence, the researcher is attempting to use sisal fiber as an effective and sustainable additive to produce good quality fiber reinforced concrete. This study aimed to examine the effects sisal fiber on the compressive and flexural strength of concrete. As well as it recommends the optimum percentage of sisal fiber percentage. Sisal fibers were brushed, lined up, and cut to obtain a 5cm length of the fiber. To produce a well-mixed fresh concrete, the fiber was added after mixing all concrete ingredients. The compressive strength was tested at the ages of 7, 14, and 28 days of curing. Flexural strength was tested at ages 7 and 28 days curing. A total 45 of 150 x 150 x 150mm concrete test cubes and 30 of 50mm x 100mm x 100mm beams were cast using a mix proportion of 1:1.93:3, with water-cement ratio of 0.5. The results showed that the compressive and flexural strength increased as the sisal fiber percentage increased up to 1.5%. The optimum values of compressive and flexural strength come from concrete containing 1.5% sisal fiber. Based on the test results, the compressive strength at 0.5%, 1.0%, and 1.5% gained 4.53%, 16.56%, and 29.69% of the average compressive strength respectively. At 2% addition of fiber, concrete lost 35.31% of strength at 28 days curing. The flexural strength at 0.5%, 1.0%, and 1.5% sisal fiber gained 9.23%, 12.1% and 9% of strength respectively, while at 2% the addition of sisal fibber lost 15% of strength at 28 days curing. Therefore, the addition of sisal plant fiber increased both compressive and flexural strength up to 1.5% fiber by weight of cement compared to the control group of concrete 1.5% of sisal fiber is recommended.
Abstract: One of the additional materials for sustainability and strength of concrete is Fiber Reinforced Concrete. Hence, the researcher is attempting to use sisal fiber as an effective and sustainable additive to produce good quality fiber reinforced concrete. This study aimed to examine the effects sisal fiber on the compressive and flexural strength of c...
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BIM Implementation Plan in Building Works in the Design Stage in the Provincial Municipality of Puno
Issue:
Volume 7, Issue 3, June 2022
Pages:
30-34
Received:
25 May 2022
Accepted:
14 June 2022
Published:
27 June 2022
Abstract: The construction industry in the public sector has failed in recent years, due to deficiencies in the management of processes in the tenders and the contractual execution of public works and this problem has been replicated in the Provincial Municipality of Puno, which is why the The main objective of this research is to know the consequences of the implementation of the Construction Information Model in the terms of reference formulated by the user area in the Provincial Municipality of Puno, the Survey method was used, based on an information survey. of the knowledge and uses of the methodology of the Construction Information Model that the officials and public servants of this entity have, a statistical history of the behavior of the works by contract in buildings from 2016 to 2020 was made, results such as as deficiencies in contractual and administrative procedures; That is why the projects in this entity are not successful and even most of the works do not have a technical-financial settlement to date. A mapping of the traditional processes used by the Provincial Municipality of Puno was carried out according to its organization chart and it has been detected that the process for a project to be viable at the design level is long and for the same project to be executed there are facts. bureaucratic; Therefore, a new mapping of processes is proposed with the methodology of the Construction Information Model to streamline the processes of the entity, and finally a proposal for improvement is proposed with the pilot plan or implementation of the approach of the terms of reference with guidelines of the methodology of the Construction Information Model in projects that are in the bidding stage to obtain a level of detail indicated in the technical specifications of each project.
Abstract: The construction industry in the public sector has failed in recent years, due to deficiencies in the management of processes in the tenders and the contractual execution of public works and this problem has been replicated in the Provincial Municipality of Puno, which is why the The main objective of this research is to know the consequences of th...
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Identifying the Factors Affecting the Cost Management of Road Construction Projects in Tanzania: Review Paper
Salum Khalid Chamuwange,
Yan Ning
Issue:
Volume 7, Issue 3, June 2022
Pages:
35-39
Received:
2 May 2022
Accepted:
20 June 2022
Published:
30 June 2022
Abstract: Among the key factors to take into consideration before the execution of any project is time, cost and quality. Most projects meet Quality and sometimes time but cost management is a real question in the implementation of many construction projects in the world. Poor management of the cost causes the delay of many road construction projects in the world too. In this paper literature review has been conducted to identify different factors that contribute to cost management both positive and negative ones. Different factors were identified that contributed to poor management of cost in highway construction projects such as force majeure factors like weather conditions, political matters and other factors like change in design, change of scope, conflict among the stakeholders, poor leadership, incompetence of project manager and subcontractors, in Tanzania from the literature perspective the challenge of cost overrun is very critical as insisted by different authors in their researches. Most of the projects deviate from their planned budget by even more than 50%. Apart from all causes of cost overrun, delay in these projects is the critical problem which causes the cost increase, the problem of delay is critical in both developing and developed countries, hence mitigating the factors discussed in this paper will minimize the problem of delays and cost overrun too although further research is required in this area to come up with proper mitigation measures to minimize the problem of cost overrun in road construction projects in Tanzania.
Abstract: Among the key factors to take into consideration before the execution of any project is time, cost and quality. Most projects meet Quality and sometimes time but cost management is a real question in the implementation of many construction projects in the world. Poor management of the cost causes the delay of many road construction projects in the ...
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