DEVELOPMENT OF RIGID ROADS / CONCRETE ROADS
For road construction, there are several methods, namely rigid pavement or flexible pavement. Rigid pavement / concrete road, is a road work made with a high quality concrete mixture. depending on the needs and where the location of the work to be carried out using high quality concrete. for example, for the manufacture of toll roads that use concrete / rigid pavement, it usually uses a higher quality concrete to be able to be crossed by various vehicles. construction of a rigid pavement / concrete road from a compacted subgrade layer and then immediately make a road with cast concrete on the ground. the load that is received from the top of the concrete road is directly channeled to the ground. so the load received will be transferred directly to the subgrade under the concrete road.
While asphalt pavement (flexible pavement), uses a paved layer on the top surface. while underneath it uses a grained layer such as class A aggregate, class B aggregate, selected stockpile soil and subgrade. for flexible pavement road resistance, it is very influential on the subgrade and the grained layer under the asphalt. if there is an unstable subgrade it will quickly affect the layers above it.
This road was built to get to the village residents around . to get good access to the plantation the government provides a budget for the construction of this road. related to the growth in rural areas that have gardens for the economic rotation of the local area.
with the construction of this road, people who own gardens receive very good benefits to support the economy. Every crop from the garden can be brought directly to the nearest market for sale. access roads that are already good make financial regulations in this village greatly increase.
In the construction of a concrete road, the thickness of this road is 15 cm and under the layer of cast concrete there is sand filled with a thickness of 5 cm so that when casting on this road it is flat and good.
The materials used in making concrete roads are clean sand, cement, water and gravel. The quality of the concrete used is K225 Indonesian National Standard (SNI). in casting required side dividers or concrete road formwork. Formwork is used along the road that is used so that the concrete mix that has been poured is out of the predetermined size. for example a road 4m wide and 15cm thick with a length of 200m. so the formwork is used along the worked road.
after the road is ready on the concrete, it must wait 28 days for it to be used. according to the provisions of the concrete must wait for a maximum dry mass of 28 days. to maintain the quality of the concrete which is durable and not easily damaged if it is crossed on this concrete road. After the 28 day period is over, the side formwork on the concrete road will be opened and can be passed by vehicles.
The location of this road is on the edge of a hill, so there are several locations that need to be made of retaining walls to prevent landslides. in the installation of retaining walls using k225 concrete is the same as the quality of the concrete for road works. in the pair of retaining walls have the structure of the foundation, column, sloof, natural stone masonry and ring beams.
Actually, nowadays, concrete roads are one of the most unpopular options. It's not that practical, and it depends too much on the weather and the thermal amplitude. I mean, the bigger the temperature difference is during 24 hours, the faster the road will get broken, which is not that great. Besides that, sometimes, even the best mechanics and engineers cannot tell you how long for concrete to dry, especially if you are making a concrete road that has to to be put into operation at a certain time.