How much sand do i need for a 25kg bag of cement | how much sand do i need for 1kg of cement | how much quantity of sand required per 25kg cement in preparation of mortar | how much quantity of sand required per 25kg cement in preparation of concrete.

There is a good mix of cement, sand gravel or stone and water require during the preparation of concrete mix for achieving the targeted compressive strength of any structure like Foundation, footing, slab formation, for driveway, roadway and pavement, street. And mix of cement sand & water used for preparing cement mortar used for brick/ block laiying and rendering.

**How much sand do i need for a 25kg bag of cement?**, its depending on type of mix, either use for preparation of cement mortar or concrete, if cement is used for mortar for brick/block work and plastering generally 1 part of cement mix with 3 to 6 parts of sand in the mix ratio 1:3 used for repairing and waterproofing, 1:4 used for ceiling and concrete wall plastering, 1:5 and 1:6 used for brick wall plastering and brick laying work.

If cement is used for preparation of concrete for patio, slab, foundations, sidewalk etc, then generally 1 part of cement mix by 2 parts of sand and by 3 parts of aggregate or stone to gain 30 MPa concrete. This is good mix of concrete. At construction site ingredients of cement mortar such as cement, sand, gravel and water measured by the volume not the weight, generally it is measured with the help of wheelbarrow, shovels or buckets, generally a construction wheelbarrow available in 6 cubic feet.

**How much sand do i need for a 25kg bag of cement**

Generally density of Portland cement is about 1440kg/m3, so one 25kg bag of cement yields 0.0174 cubic meter which is approximately as 0.60 cubic feet. Bulk density of aggregate or crushed stone is about 1520kg/m3, so 1 cubic foot of stone weighs about 43kg. Bulk density of sand is about 1600kg/m3, so 1 cubic foot of sand weighs about 45kg. Quantity of water required based on water cement ratio which is generally is about 0.50 on mild exposure.

For standard mortar mix preparation generally 1 part of Portland cement mix with 5 parts of sand, it means one bag of 25kg cement of 0.60 cubic feet mixed with 3 cubic feet of sand (0.60× 5 = 3) or 25kg of cement mix with 135kg (45×5 = 135kg) of sand & add 13 litres of water (w/c is around 0.50, so 25× 0.5 = 13 litres).

Regarding this, **“how much sand do i need for a 25kg bag of cement?”**, on general practices, one bag of 25kg of Portland cement has to be mixed with 135kg (3 cubic feet) of sand and 13 litres of water to produce standard mix cement mortar used for brick/block laying and plastering, for this 1:5 mix is adopted in which one part of cement is mixed to 5 Parts of sand and w/c Ratio is about 0.50.

Regarding this, **“how much sand do i need for 1kg of cement?”**, on general practices, one kg of Portland cement has to be mixed with 5.4kg (135÷25 =5.4) of sand and little more than 0.5 litres of water (13 ÷25 = 0.52) to produce standard mix cement mortar used for brick/block laying and plastering, for this 1:5 mix is adopted in which one part of cement is mixed to 5 Parts of sand and w/c Ratio is about 0.50.

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For standard concrete mix preparation generally 1 part of Portland cement mix with 2 parts of sand and with 3 parts of aggregate or stone, it means one bag of 25kg cement of 0.60 cubic feet mixed with 1.2 cubic feet of sand (0.60× = 1.2) and with 1.8 cubic feet of aggregate or stone or 25kg of cement mix with 54kg (45×1.2 = 54kg) of sand and with 78kg of stone & add 13 litres of water (w/c is around 0.50, so 25× 0.5 = 13 litres).

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Therefore, one 25kg bag of Portland cement has to be mixed with 54kg of sand, 78kg of gravel, aggregate or stone and approximately 13 litres of water or 1kg of cement has to be mixed with 2.16kg of sand, 3.12kg of gravel, and little more than 0.5 litres of water to produce 3000 Psi or 30 MPa standard concrete mix.

**How much sand and cement do i need**

For 1 cubic meter of mortar in 1:3 mix (1 part cement to 3 parts of sand), you will need 19 small bag of 25kg cement and 0.9975 cubic meter ( 35.22 cft ) or 1600 kg ( 1.6 tons) of sand quantity. If mix is 1:4, you will need 15 bags of 25kg cement & 1700kg or 1.7 tons of sand. If mix is 1:5, you will need 13 bags of 25kg cement & 1775kg or 1.775 tons of sand. If mix is 1:6, you will need 11 bags of 25kg cement & 1825kg or 1.825 tons of sand.