I have seen it done this way on small jobs.
one part cement to four parts of sharp sand
To render an 11m² wall, you'll typically need about 2-3 bags of cement (25kg each) and approximately 0.5-0.75 cubic meters of sand, depending on the thickness of the render and the specific mix ratio used. A common mix ratio for rendering is 1 part cement to 4-5 parts sand. It's essential to adjust these quantities based on the desired finish and application technique. Always check specific product recommendations for the best results.
Homogeneous. The parts from which cement is made from are indiscernible.
It you're trying to make concrete, that formula will work if you don't add too much water, it's lean on the cement.
You already have the amount of cement you need 75lbs so that is your 3 parts cement. 25 + 25 + 25 =75. Now add the 2 parts sand 25 + 25 = 50lbs. --------------------------------------------------------------------------------------------- Find fractional parts. There is a total of 5 parts. 2/5 = .4 is the fractional part of sand and 3/5= .6 is the fractional part of cement. Then .4 x 75 = 30lb is the sand and .6 x 75 = 45lb is the cement. This gives 75lbs of concrete. If you are asking how much sand to add to 75lbs cement the top answer is correct.
7 Parts sand to 1 Part portland cement
162. Comparison Of Quantities Of Materials - The mixture of concrete used for this class of work is often 1 part Portland cement, 3 parts sand, and 6 parts stone. The quantities of materials required for one yard of concrete (www. books.google.com) ("Cement and Concrete") 495. The concrete was one part Portland Cement; three parts sand; three parts gravel and three parts broken stone. (www.books.google.com) ("Cement and Concrete")
The typical mix ratio for Tyrolean (a type of textured render) is usually around 1 part cement to 3 parts aggregate, with water added to achieve the desired consistency. Some variations may include adding lime to improve workability and flexibility, often in a ratio of about 1 part lime to 10 parts cement. It's important to follow specific product guidelines and adjust the ratio based on project requirements and environmental conditions.
8 kilos sand to the 2 kilos cement.
The copper, the circuit boards.
What I usually use is: 1 Part Portland Cement 2 Parts Medium to Coarse Sand 3 Parts Gravel or Rock
one part hydrated lime, three parts medium grade sand, two parts Portland cement and water as required or needed