Technical Practice of Using Citric Acid Leftovers as Cement Retarding Agent
chen qi1; wu ming-sheng2; tang yan-ping3(1.school of material science and engineering; southwest university of science and technology; mianyang; sichuan; 621010; china; 2.china building material academy; beijing; 100024; china; 3.department of physical education; southwest university of science and technology; mianyang; sichuan; 621010; china)
..............page:10-11