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3 days ago · When examining the mortar applied to paver blocks with a 30% substitute of fine aggregate by CW, the rebound hammer test offers valuable information about the material’s outer layer toughness ...
2 days ago · As shown in Figure 23, when the relationship between peel adhesion strength of the coated floor and the total effective pore volume and moisture content of the surface layer 0–1 cm concrete was examined by variance analysis, firstly, it is important that the moisture content is around 6% or less [31].
3 days ago · The evaluations involve aspects like compressive strength, water absorption (WA), dry density, flow table measurements, ultrasonic pulse velocity (UPV), and rebound hammer tests. The results indicate that replacing natural aggregates with up to 30% CW significantly improves compressive strength (CS) and Rebound results from tests.
5 days ago · The key components are the leads and the hammer. The leads are used to align the hammer to strike the pile squarely (Figure 13.3). Hammers can be simple drop hammers of weights between 2.5 and 15 kN or modern steam/pneumatic hammers. Two popular types of steam/pneumatic hammers are shown in Figure 13.4.
4 days ago · The concrete-rock interface is considered one of the most fragile regions of a concrete dam. In general, concrete dam projects consider the premise of being supported on good quality rock. However, in tropical countries, there is a greater influence of weathering on rock and, therefore, situations in which the characteristics of the rock are worse than expected are commonly identified. As a ...
1 day ago · Impact tests on bamboo scrimber panels was carried out on a JSL-3000 Drop Hammer, as shown in Fig. 9. The maximum height of the testing machine is 1.2 m, and the corresponding maximum velocity is 4.85m/s. Specimens were clamped by a front ring and the lower pedestal to provide fixed supports.
Dec 13, 2023 · A pile driving system is composed of four main components: lead, hammer cushion, helmet, and pile cushion. Together, they work to transfer energy to the piles, which impacts how well the hammer performs.
