Merauke Regency as a national food place is anticipated to create 5.2 million tons of rice each year, identical to 5.41 percent of public rice creation in Indonesian and 88.92 percent of all Papua region. Kurik District is in the second position in Merauke Regency as the largest rice surplus area with a productivity of 47,376.15 tons or equivalent with 27.41 percent. The inadequate condition of road infrastructure resulted uneasy mobility in agriculture between regions. Finding the level of satisfaction between road performance and community expectations of road construction can be done using the Importance Performance Analysis (IPA) method. Meanwhile, the method used in determining road development priorities is the Analytical Hierarchy Process (AHP). The results of the level of road satisfaction found a gap between road performance and community expectations, namely the need for performance development (quadrant I). While the hierarchical process obtained the priority for the development of the Jaya Makmur Village road is Main Road in Jaya Makmur Village with an eigenvector value of 2.73. This is because Main Road in Jaya Makmur is the main road of Jaya Makmur Village with a condition of 53.19 percent of which is a road with ground level.
Pit sand generally has a lower silica content than sand sourced from rivers or crushed stones. The effect of this sand on the creep of concrete has not yet been fully studied. Understanding the creep on concrete can help to estimate the behaviour of structures in the future. This study aims to investigate the effect of the properties of pit sand with different chemical compositions and grain size distributions on the creep of concrete, and to develop a creep prediction model for concrete made of pit sand with low silica content. This investigation employs laboratory testing to obtain the physical and chemical properties of the sand, as well as its relationship to shrinkage and creep of concrete. The results indicate that shrinkage in concrete is influenced by the water absorption of sand. It is also found that sand with a large Calcium Oxide (CaO) compound has a smaller shrinkage compared to those with small CaO content. This study shows that sand with a high percentage of fine grains and mud content exhibit a higher creep. A concrete creep prediction model is proposed based on the modification of the B3 Model. Modifications are made by proposing a material constant obtained from short creep tests. The creep parameter obtained from the test can be better used to predict the creep of concrete.
Pit sand generally has a lower silica content than sand sourced from rivers or crushed stones. The effect of this sand on the creep of concrete has not yet been fully studied. Understanding the creep of concrete can help to estimate the behaviour of structures in the future. This study aimed to investigate the effects of the properties of pit sand with different chemical compositions and grain size distributions on the creep of concrete, and to develop a creep prediction model for concrete made of pit sand with low silica content. This investigation employed laboratory testing to obtain the physical and chemical properties of the sand, and its relationship to the shrinkage and creep of concrete. A concrete creep prediction model is proposed based on the modification of the B3 Model. Modifications were made by proposing a material constant obtained from short creep tests. The creep parameter obtained from the test can be better used to predict the creep of concrete.
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