PENGEMBANGAN PELABUHAN BELAWAN DAN PENGARUHNYA TERHADAP KEHIDUPAN SOSIAL EKONOMI MASYARAKAT DELI, 1920-1942

Belawan port development in the end of the IX century and the early twentieth century had made only one port of Belawan port of export-import of the largest in East Sumatra as well as being one of the host ports in the East Indies. The development of plantations in the interior of East Sumatra has prompted the colonial government to develop the port of Belawan both in physical context, and as well as management tools. The port establishment such as dredging sludge, docking construction, storage warehouses, office buildings, roads, and railway lines. It was provided by some facilities such as electricity supply and clean water. In the field of port management of Belawan managed to become modern port company (bedrij haven). The development of Belawan port resulted on the increasing of import-export revenue in Deli and the surrounding regions. The influence of its development was about changes on citiy’s morphology, population, trade, labor, and social infrastructure.

Application of a Modified Vacuum Preloading Method on a Dredged Fill Soft Foundation

A lot of large area lands were made in China coastal areas by dredging sludge from the sea. The dredged fill ground had a very low bearing capacity which should be increased as soon as possible to meet the requirements of constructions. However, conventional vacuum preloading could not be used for this purpose because the sand cushion could not be laid on the sludge ground due to the very low bearing capacity. To solve this problem, a modified vacuum preloading method without sand cushion was proposed. This method has been successfully tested and applied in the reclamation project in Wenzhou. Based on this project, the technological process and the key technology were introduced and the reinforcement effect was analyzed. Project results showed the modified vacuum preloading method could achieve a good reinforcement effect on large area dredged fill ground in a short period. It is worth to promote the application of this method in coastal reclamation projects.

The Experimental Study and Analysis on the Scumming Degree of Sea Mud Sintered Perforated Brick with Industrial Waste Slag

The preliminary experimental studies on the effects of two kinds of industrial waste slag of iron tailings and fly ash which have different characteristics on the scumming degree of sea mud sintered perforated brick were carried out in this paper. And the influence mechanism of two kinds of industrial waste slag on the scumming degree of sea mud sintered perforated brick were analyzed combinated with interrelated references. The test and theory analyzed demonstrated that iron tailings have more advantageous factors to alleviate the scumming degree of sea mud sintered brick and fly ash has more disadvantageous factors to enhance the scumming degree of sea mud sintered brick. A vast development world would be provide for the resources reuse of huge dredging sludge come from sea engineering by strengthening the basic study on the scumming resistance technique of sea mud sintered brick.