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  • Publication
    Environmental impacts of construction projects in Pauh Putra Main Campus, Universiti Malaysia Perlis
    Buildings are enduring, and cities have even longer lives. Their impacts extend into the lives of several generations of our predecessors to the consequences of unspecified resources, environmental pollution, and decaying climate conditions. The identification of likely impacts of construction projects on the environment according to severity is a task that must be accomplished for minimizing those effects. This study identifies the most common environmental impacts of construction projects in the Pauh Putra Main Campus, Universiti Malaysia Perlis and proposes the measures for their mitigation. The methodology includes a review of pertinent literature, observations of the general environmental effects of on-site construction activities, focus groups, and a survey among university staff, students, and construction workers to determine their perception regarding the environmental impacts of construction activities. The collected data from 50 respondents was presented in tabular form and analyzed using the Statistical Package for Social Science software. The responses on the impacts of the ecosystem, natural resources, and public are linked to their relative importance index (RII). Most participant s were aware of environmental impacts caused by the construction project which prominently affected the ecosystem in terms of "noise pollution,""dust,"and "air pollution"(which are ranked first, second, and third with RII values of 0.57, 0.52, and 0.52, respectively). The majority of the participants ranked "use technological innovations materials and methods such as the industrialized building system"as the mitigation measure of controlling the adverse environmental impacts. The long-term asset value of a building depends on its capability to fulfil user needs, withstand changing environmental circumstances, and survive the progressing expectation of sustainability design quality.
  • Publication
    Effect of Incorporating Coal Bottom Ash on the Properties of Concrete
    Industrial waste without proper control may lead to contamination and cause environmental pollution. Transforming waste such as coal bottom ash (CBA) wastes into a sustainable construction material is so much help in reducing the waste in the surroundings and is also environmentally friendly. In this research, cement was replaced with CBA in the concrete to analyse the effect on concrete performance. Consequently, this project focuses on physical and mechanical properties of concrete before and after using CBA. In the design stage for concrete mixing, the ratio for raw materials selected was 1:1.35:3.2 for cement, sand, and aggregates, respectively (grade 25). Two different major categories of concrete were made and compared. The first category is ordinary concrete with control concrete mix (CM), while the second category is concrete which uses 5%, 10%, 15%, 20%, 25%, and 30% of CBA partial replacement in the volume of cement in the concrete mix. The samples we used in this research were cubes 100 mm x 100 mm x 100 mm prepared for the water absorption, density, and compression test. The workability of concrete containing CBA with fixed water quantity was lower corresponding to that of the control mix. The hardened concrete density was reduced, and the water absorption increased with an increased amount of ground CBA. The results for the compressive test of control samples are 22.940 N/mm at 28 days of curing, and the highest percentage was 10% CBA which is 28.28 MPa. Since the strength of the concrete with CBA is increasing so, modified concretes can be considered to use in construction.
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