SKY Mining and Construction Machinery Co., Ltd. is a hi-tech, engineering group. We are specialized in the research, development, and production of industrial crushing, powder grinding, mineral processing equipments and other related devices. Our products have been sold to 120 countries and areas of Southeast Asia, East Europe, South America, the Middle East and Africa etc, and more foreign markets will be promoted in future.
We hold "Pursuing the Technology and Quality" as our management concept all the time. Relying on absorbing world leading crushing and powder processing technology, advanced management and quality control system, as well as our full efforts, SKY has earned high reputation among our customers.
31 Aug 2012 , On the occasion of Concrete Day, Nagesh Puttaswamy looks into the , Concrete is a mixture of cement, water, sand and broken stones (jelly) in a definite proportion which is a , It is designated as M10, M20, M25 and so on
29 Dec 2011 , The grade of concrete for various concrete proportions are M10 - 1:3:6 (Cement:Fine aggregate:Coarse aggregate) M15 - 1:2:4 M20 - 1:15:3 M25 - 1:1:2 , The mix proportion in concrete mix design explain briefly "More water.
12 Oct 2013 , Other method is based on concrete strength at 28-day age , suggested a mathematical relationship between concrete strength and water/cement ratio as: , M25, –, 207, 30, 357, 426, 447, 52, 507, 576, 591, 685
11 Feb 2015 , FOR ALL CONCRETE GRADE: M5 = 1:4:8 M10= 1:3:6 M15= 1:2:4 M20= 1:15:3 M25= 1:1:2 CLEAR COVER TO MAIN REINFORCEMENT: 1FOOTINGS : 50 mm 2 , Water Cement ratio : 036 (188 Kg) Admixture : 120%3