Chairman of the State Administration Council, Prime Minister Senior General Min Aung Hlaing, yesterday morning inspected the upgrading of Yazahtani Road in Nay Pyi Taw with the use of the regulating course mix design.
Accompanied by SAC ViceChairman Deputy Prime Minister Vice-Senior General Soe Win, Council Secretary General Aung Lin Dwe, Joint Secretary General Ye Win Oo, the Union Minister for Construction and officials, the Senior General heard reports on placing of asphalt concrete along the damaged road section from Pankhin traffic light to Kumudra lotus flower roundabout on Yazahtani Road with the use of machinery by Director of Military Engineers under the Office of the Commander-in-Chief (Army) Maj-Gen Zaw Naing Oo.
In his guidance, the Senior General said that when using new technology on Regulating Course Mix Design in renovating the road section, it is necessary to emphasize the long-term existence of the road systematically, meeting the criteria of ingredients.
He gave guidance that efforts must be made to swiftly complete repaving of the road with evenness and proper compaction.
The Senior General continued that it is important for no water accumulation on the road surface and that proper drainage is in place, works must be carried out systematically as per the designated standards and procedures.
He stressed that at curved sections of the median strip, road evenness must also be ensured, and road paving works must be carried out promptly and efficiently to ensure their swift completion.
The Senior General inspected the progress of repaving works and gave necessary guidance.
The road section from Pankhin traffic light to Kumudra lotus flower roundabout on Yazahtani Road was severely damaged by the Mandalay earthquake. So, the Senior General inspected the loss and damage to the road section soon after the earthquake. After coordinating with engineers, the Senior General gave guidance to repair the road section with the Regulating Course Mix Design.
Hence, to carry out road repair works using the Regulating Course Mix Design, the original asphalt concrete mix design was modified by reducing the proportions of asphalt and cement. Based on this revised design, two sample moulds were prepared at the asphalt concrete laboratory of the Ministry of Construction, and tests for Stability and Flow were conducted using a Marshall Testing Machine. The results met the required standards, confirming the success of the test.
Following these step-bystep tests, the current section of the road is now being repaired using the Regulating Course Mix Design. If road paving works are undertaken using this method, for every one-mile section with two inches in thickness, 12 feet in width, and 5,280 feet in length, it would save approximately 18.44 tonnes (368 bags) of cement and 6.15 tonnes (33 barrels) of asphalt.
MNA/TTA
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