Abstract
Riau Province has the largest peat soil on Sumatra island. Peat soil has a low bearing capacity and very deep hard soil depth, even in some places up to 16 meters depth. This condition makes the construction of roads on peat soils will experience significant and unavoidable degradation and damage if no special handling is conducted. One of the efforts to overcome the situation in road construction is the use of foam mortar which has been developed by the Road and Bridge Research Centre (PUSJATAN) in 2013 which discovered the Foam Mortar Light Pile technology. This foam mortar is a cement mixture that has a lower density than water. This study conducted further research on finding the ratio of Cement vs. Sand in foam mortar which has a specific gravity smaller than water. The sand comes from Teratak Buluh Village, Kampar Regency, Riau Province and Cement (PCC) comes from Padang City, West Sumatra Province. The cement and sand ratio was varied; 1C:0.7S, 1C:0.8S, 1C:0.9S, 1C:1.0S, 1C:1.1S and 1C:1.2S. Cylindrical samples with a diameter of 10 cm and a height of 20 cm were subjected to a compression test using a modified CBR tool at the 7 day curing time. From the test results, samples at a ratio of 1C: 0.7S and 1C: 0.8S can float in water, with a density of 0.77 tonne/m3and compressive strength of 901.20 kPa and a density of 0.83 tonne/m3with a compressive strength of 971.35 kPa respectively.
Highlights
Riau Province has the widest peat soil type on Sumatra Island, 4,044 million ha
Road and Bridge Research Centre (PUSJATAN) in 2013 developed a new technology called Foam Mortar Lightweight Technology [2]. This foam mortar has a specific gravity that is smaller than water and can carry a minimum load of 800 kPa so that it can be used as a substitution for embankment soil on road pavements in low-bearing capacity soil
The density was determined to find out the sample which has a density less than the water density, it can be used as lightweight material to replace the embankment as per the Road and Bridge Research Centre (PUSJATAN) [2]
Summary
Riau Province has the widest peat soil type on Sumatra Island, 4,044 million ha This peat soil has a low bearing capacity and has a very deep hard soil depth, even in some places it has a depth of up to 16 meters. Road and Bridge Research Centre (PUSJATAN) in 2013 developed a new technology called Foam Mortar Lightweight Technology [2] This foam mortar has a specific gravity that is smaller than water and can carry a minimum load of 800 kPa so that it can be used as a substitution for embankment soil on road pavements in low-bearing capacity soil
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
