The road is an access that connects an area with other areas. With the road, mobility will be easier so that it has an impact on increasing or stabilizing the economy. The Sumberboto-Gunung Gede Blitar road section is one of the access roads to Tambakrejo beach tourism. To improve comfort and safety for road users, it is necessary to improve road quality. This study aims to plan the pavement on the Sumberboto-Gunung Gede Blitar road section. The planning is carried out on the condition of the heavily damaged pavement, with a service life of more than 10 years, the width of the road is 4 meters, the length of the road is 6 kilometers, the type of collector road is class II, and the type of pavement is laston. The planning carried out includes the addition of roads in the hills of Blitar Regency, the data used includes the condition of the sections on the road with calculations referring to the Design Manual Number 02/M/BM/2013 road pavement. The planning results obtained road construction with flexible pavement, with a specification of a surface layer of 10 cm, a layer of 20 cm for the top foundation, 25 cm for the bottom layer of the foundation. From this plan, a total budget of Rp. 13,572,808,084.00 (thirteen billion five hundred seventy-two million eight hundred thousand rupiah) is required. With these results, it can be used as a reference in realizing road construction on the Sumberboto-Gunung Gede Blitar road section.
Roads as a means of transportation have an essential role in supporting human activities. One of the developments in road construction is the application of geotextiles in road combination pavements. Geotextile itself is often found in construction planning, especially in soil stabilization. The plandaan – boro Tulungagung road section is indicated by the type of silt as deep as 1.2 meters so that improvements are needed to support the quality of road construction. The purpose of this research is to plan road pavement with geotextiles on the Plandaan to boro roads. The geotextile used is a woven geogrid geotextile. The method used in planning is the Bina marga method of the 2017 Road Pavement Design Manual. The data used include technical data, traffic data, and California Bearing Ratio (CBR). The planning includes traffic design, pavement thickness calculations, and volume calculations. The planning results will be HMA – WC pavement covering an area of 4,200 m, with K225 concrete pavement covering an area of 8,400 m. Class Bﬞ Aggregate Pavement covering an area of 10,500 m using a geotextile layer requires 51,000 m² so that these results can be used as a reference in the repair or improvement of the Plandaan - boro Tulungagung road.
Stability is a measure of the strength of an asphalt mixture in resisting deformation due to loading. If a road construction structure cannot withstand the existing load, it will result in road damage that endangers road users. This study aims to improve the stability of the asphalt concrete mixture with the use of crumb rubber. Crumb rubber is used because it has good resistance and elasticity. The research was conducted experimentally by making test objects in the laboratory. In this study, five variations crumb rubber (2%, 4%, 6%, 8%, and 10% of the weight asphalt mixture) were carried out with the size of the powder retained on a 40 sieve. Marshall test and analysis of volumetric was carried out to determine the characteristics of the asphalt-concrete mixture. The results showed that the highest Marshall stability was obtained at 10% crumb rubber with a stability value of 1422 kg. The use of rubber powder can significantly increase the strength and quality of the asphalt-concrete mixture. Thus, crumb rubber can be used, and this percentage can be used as a reference in the manufacture of asphalt-concrete mixtures in order to obtain good road pavement quality.
Developments in areas such as roads, buildings, bridges, canals, and other developments are currently developing in the Purwodadi area. One of the jobs, namely the excavation process with a large scale of work, needs to be taken into account in terms of time, cost, and selection of equipment types. During the project, the costs incurred must also be taken into account. This is necessary to complete the work more easily, quickly, and efficiently. Dump trucks are medium to long-distance material transport vehicles. This research aims to determine the dump truck's productivity, the work's budget, and the time required to complete the regular excavation work for STA 8+450 – 8+500 on the BTS BLITAR/MALANG SP 5 PURWODADI road construction project. The research method used is a survey and observation method during the project and calculating the estimated Budget Plan for the rental of heavy equipment Dump Trucks. The results obtained are the number of heavy equipment used in carrying out ordinary excavations and embankments is two units of Dump Trucks with a capacity of 4 m3 with each productivity of 52 m3/hour, which requires 617 cycles to transport material from the excavation area to the stockpile area. Based on the analysis, the estimated cost for the heavy equipment budget for dump trucks is Rp. 5,610.000,00 (Five Million Six Hundred and Ten Thousand Rupiah).
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