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Research on the use of stone dust (SDT) as a partial replacement of Ordinary Portland Cement (OPC) has been carried out by using cylindrical concrete specimens with Ø = 150 mm and h = 300 mm. Specimens were made by using the ratio, in weight, of cementitious material : sand : crushed stone of 1.00 : 1.93 : 2.67. The water cementitious material ratio is of 0.52. The cementitious material is a mixture of OPC and SDT. The percentage of OPC replacement by SDT varied from 0%-25%. The distribution of grains of sand and crushed stone are designed according to SNI 03-2384-2000: gradation zone 2 for fine aggregate and gradation with a maximum diameter of 20 mm for coarse aggregate. The tests of compressive strength, elastic modulus, tensile strength and permeability on the cylindrical specimens were realized at 28 and 56 days. The result indicates that SDT shows a good pozzolanic reactivity in terms of compressive strength, elastic modulus, tensile strength and permeability. Therefore, it can be used as a component of Portland Cement Composite. The development of compressive strength, elastic modulus, tensile strength and permeability of concrete produced with a mixture of OPC and SDT depends on the amount of SDT used in the mixture and hydration time. The pozzolanic effect of SDT can only be seen at the age of 56 days. The optimal use of SDT as a partial replacement of OPC in concrete applications varied from 5%-10%.

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Natural slope that are formed from the soil often experience landslides. Landslide occurs because the driving force received by the slope is greater than the ability of the slope to resist it. Thus forming a sliding plane that has a low stability. Factors that decrease the stability of the slope are infiltration of rainwater, vibrations that may come from earthquakes or moving loads, construction loads, and cracks. Rainwater that infiltrate through slope causes active force on the slopes and also decreases soil strength. Landslides due to infiltration of rainfall are common problems on residual soil slopes from the tropical region. Soil stabilization process for soil that have been experienced prior landslide, often encounter difficulty in compacting soil to form slope bodies. Loose sandy soil slopes has a very low strength so that expensive construction is needed. One possible way to do this is to fill the pores of the soil with certain aggregates. One of the aggregates is cement. The cement material is chosen because cement when liquid can seep in and fill the pores of the soil. After drying this cement can increase soil permeability and reduce soil pore numbers. Filling cement into the soil pores can be done by injection of liquid cement. The problems that will be raised in this study are: What is the change in soil permeability rate if the soil is injected with cement and how much changes in soil pore size when injected with cement. The method used in this study is to make a test model in the laboratory. By comparing soil without cement injection with soil that has been injected with cement, it will be known to increase soil permeability and decrease the soil pore number. From the preliminary test with proctor test, the maximum density was 1,286 gram/cm3 and the optimum water content was 18%. Decrease of coefisien permeability from without cement injection to with cement injection 31,5 %.

Denpasar represent town with amount of most resident in Bali and have tendency will increasingly. This of course will be followed by accelerating development various sector. This condition will be create various of  urban problems, among the others problem is jam of traffic, that caused  of existence of unbalanced between growth of very fast vehicle (14%) compared to with accretion of new streets which only reaching 3,6% a year. To overcome the problem one of the effort able to be conducted is by improving the quality of street service which have there, especially at critical joint streets and intersection streets, like Gatot Subroto - Cokroaminoto intersection-roads. However progressively is fast of accretion amount of vehicle, this methode will not can give optimal service, so that require to another way of   problem solving. Other Arrangement Alternative to solve this jam is with intersection street is not at a piece of, such as which have been applied at Simpang Dewa Ruci. In general, the type of construction is fly over and underpass, but pursuant to experience at Simpang Dewa Ruci, from the social and culture aspect happened deduction of fly over type.