Examining the crack pattern of lightweight concrete under compressive and tensile loads is the goal of this study. A lightweight concrete specimen was made using foam, fine aggregate, and Portland Composite Cement. Foam agent and water are combined in a 3:10 ratio to produce foam. There were three different foam volume variants used: 15.7 liters, 25.12 liters, and 37.68 liters. As a sample, a cylinder with dimensions of 10 cm by 20 cm was employed. Using compressive and indirect tensile strength tests at curing ages of 3, 7, and 28 days, the crack pattern of lightweight concrete was assessed. The findings revealed that the fracture pattern for the compressive and indirect tensile strength tests was almost same; because the crack pattern was parallel to the direction of the load, it was categorized as a columnar crack pattern at 3, 7, and 28 days. Throughout time, the frequency of crack patterns in lightweight concrete decreased. It might be said that concrete becomes more resistant as it ages.
Quicklime and Portland Composite Cement (PCC) were used in a concrete-asphalt mixture (C-AM) combination to compare quicklime and Portland Composite Cement (PCC). The Marshall characteristics test was used to discover the distinguishing characteristics of a hot asphalt mixture made of quicklime and Portland composite cement (PCC) to make asphalt-type Asphalt Concrete Binder Course (AC-BC). This study used petroleum bitumen with a 60/70 penetration and bitumen contents of 5.0%, 5.5%, 6.0%, 6.5%, and 7.0% created by combining quicklime and cement in a filler. In this study, quicklime and cement were used as fillers; both materials have been used to create concrete buildings and have demonstrated their strength. To determine values for stability and density, Marshall tests were run. The Marshall technique of 2 x 75 blows was used in this study to get the necessary road materials, which were obtained in the composition of asphalt concrete binder course, in accordance with the Indonesia 2018 General Specification and the Indonesia Requirement (in Indonesian). The results showed that the filler quicklime at the optimum bitumen content (OBC) 6.5% had stability Marshall 873.9 kg, VIM 3.9%, VFB 76.63%, flow 3:33 mm, Marshall Quetiont 262.16 kg/mm, and VMA 16,49%, whereas the filler cement had stability Marshall 905.5 kg, VIM 4.1%, and VFB 76.57%, Hot mix asphalt with cement filler works better than quicklime filler. for building using intermediate layers (asphalt-concrete binder course).
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