Even worse, certain grades of sand need to be used, and if sourced from near a sea, washed.
Using unwashed and untreated salty sand is one of the factors behind the "tofu dreg projects" that became infamous in China.
"Why is the quality of some of these structures so poor? Corruption and graft undoubtedly play a role when project money is skimmed off the top for and by officials, leaving less funding for quality materials, qualified staff, and acceptable workmanship. Additionally, projects are often granted to companies that have more political ties than qualifications. In January, the Beijing Municipal People’s Procuratorate disclosed that bribery and corruption cases increased in 2010, with urban development and rural election issues involved in the majority of cases. From January to August 2011, the Communist Party’s Central Commission for Discipline Inspection announced that 6,800 officials had been prosecuted for corruption in infrastructure projects. "
Comment: "The issue with sea sand is not only the contaminants but that is very fine and smooth, is the same reason that desert sand is not used in construction"
Even worse, certain grades of sand need to be used, and if sourced from near a sea, washed.
Using unwashed and untreated salty sand is one of the factors behind the "tofu dreg projects" that became infamous in China.
"Why is the quality of some of these structures so poor? Corruption and graft undoubtedly play a role when project money is skimmed off the top for and by officials, leaving less funding for quality materials, qualified staff, and acceptable workmanship. Additionally, projects are often granted to companies that have more political ties than qualifications. In January, the Beijing Municipal People’s Procuratorate disclosed that bribery and corruption cases increased in 2010, with urban development and rural election issues involved in the majority of cases. From January to August 2011, the Communist Party’s Central Commission for Discipline Inspection announced that 6,800 officials had been prosecuted for corruption in infrastructure projects. "
https://thediplomat.com/2012/02/chinas-dangerous-tofu-projects/
Comment: "The issue with sea sand is not only the contaminants but that is very fine and smooth, is the same reason that desert sand is not used in construction"
https://www.youtube.com/watch?v=i8VFi-XMkgc