Sand is an important constituent of a large proportion of mortar and concrete, but it is mainly used in the form of natural, used in the form of a fine grinding not well researched. In addition, the fine-grained sand and aggregate are highly activeintensity, so this can be used to produce a mixture of Portland cement, mortar or concrete with higher efficiency. This study investigated the fine-grained sand activity in grain strips <90 μm, <45 μm and <32 μm and its effect on the properties of OPC FiCO milling-cement mortar. The method of measuring the activity of standard and non-standard grinding sand, the method of examining some mechanical properties of mortar mixtures, X-ray diffraction (XRD) method has been used to clarify the level of activity. The properties of finely ground sand in grain strips and its effects on some of the basic properties of OPC FiCO milling-mortar sand mortar.
grinding sand <90μm, <45μm and <32μm, cement-ginding sand mortar, active intensity
224-C1, Hanoi University of Science and Technology 1 Dai Co Viet, Hai Ba Trung, Hanoi, Vietnam Tel: +84 (024) 3623.0949 | email: email@example.com
TẠP CHÍ KHOA HỌC VÀ CÔNG NGHỆ Giấy phép số37/GP-BTTTT (15/01/2021) Giấy phép sửa đổi, bổ sung số140/GP-BTTTT (05/3/2021) Đơn vị cấp phép:Bộ Thông tin và Truyền thông Cơ quan chủ quản:Trường Đại học Bách Khoa Hà Nội Phó tổng biên tập phụ trách:GS. Đinh Văn Phong