How much water do I need for a bag of concrete (80lb, 60lb, 25kg, 20kg) | how much water do you mix with a bag of concrete | how much water do you put in a bag of concrete | how much water do I need for a bag of 40lb, 90lb, 50lb, 60lb, 90lb, 20kg, 25kg, 30kg and 40kg premixed concrete.

When you purchasing a premix bag of concrete such as 40lb, 90lb, 50lb, 60lb, 90lb, 20kg, 25kg, 30kg or 40kg for your small project like making of sidewalk, patio, curbs steps, ramp, walkway, etc, most important question comes in mind how much water do you mix with a bag of concrete?

Concrete ready mix made of blended mix of Portland cement, sand gravel and other approved ingredient, generally, dry ready mix concrete are available in different bag size and weight condition like 40lb, 60lb bag, 80lb bag, 90lb bag, 20kg, 25kg, 30kg or 40kg.

How much water do I need for a bag of concrete?, its depending on many factors, water cement ratio which range between 0.35 to 0.6, generally water comes with amount of cement you are using in the concrete mix, so every lb or kg of cement need about minimum 0.35 kg or pounds of water. Its also depend on type of concrete grade, weather condition and strength of concrete do you want.

It is better to look over the concrete mix bag for how much water should add to concrete bag, may be printing advice for you, and you should follow their instruction, you should not to put little or more water in concrete mix, both are harm for concrete, so you should put required and sufficient proportion of water in concrete mix to make fine consistency and workable paste.

**How much water do I need for a bag of concrete?**

Concrete ready mix made of blended mix of Portland cement, sand gravel and other approved ingredient, generally, dry ready mix concrete are available in different bag size and weight condition like 40lb, 60lb bag, 80lb bag, 90lb bag, 20kg, 25kg, 30kg or 40kg.

Most important 3 ingredient of concrete cement, sand and gravel have almost same density, generally they are mixed in the ratio of 1:2:3 (1 part cement to 2 parts sand & 3 parts gravel by weight) to gain 3500 psi strength of concrete and water should be added in the range of 50% of weight of Portland cement.

**Calculate how much water do you need for a bag of concrete in following steps:-**

● assume there is a 80lb dry concrete mix bag made of blended mix of Portland cement, sand and gravel in ratio of 1:2:3 (1 part cement to 2 parts sand & 3 parts gravel) respectively by weight.

● calculating of Portland cement in total mix ratio, such as total mix ratio 1+2+3 = 6, part of cement = 1/6, so quantity of Portland Cement in the mix = 80lb/6 = 13.33 pounds, thus quantity of Portland Cement in a bag of premix concrete would be nearly about 13.33 pounds.

● calculate how much water do you need for a bag of 80 lb concrete, its depend on water cement ratio would be 0.5, so quantity of water such as 13.33 × 0.5 = 6.66 pounds, generally a gallon (8 pints or 4 quarts) of water weigh about 8.345 lbs, so volume of 6.66 lbs of water such as 6.66÷8.345 = 0.8 gallon (little more than 6 pints or 3 quarts, or 3 litres). Thus, you should mix 0.8 gallon or little more than 6 pints or 3 quarts, or 3 litres of water with a bag of 80lb premix concrete.

Regarding this, **“how much water do I need for a bag of concrete?”**, a 80-pound bag of concrete will require 0.8 gallon (little more than 6 pints, 3 quarts, or 3 litres) of water, while an 60-pound bag will require 0.6 gallon (little more than 4 pints, 2 quarts, or 1.5 litres) of water, a 20kg bag of concrete will require 1.5 to 2 litres of water, a 25kg bag of concrete will require little more than 2 litres of water, and or a 40kg bag of concrete will require 3 to 3.5 litres of water.

If you buy a pre-mixed bag of concrete, you can check the back of the bag for the minimum required amount of water; however, bear in mind that you may need a bit more water than they recommend in warmer temperatures.

**How much water do I need for a 60lb bag of concrete?**

Regarding this, “how much water do I need for a 60lb bag of concrete?”, its depend on water cement ratio and type of grade of concrete, but generally you will need 0.6 gallon (little more than 4 pints, 2 quarts, or 1.5 litres) of water mix with a 60lb bag of premix concrete. This quantity of water may be little change according to weather condition or temperature.

**Mathematical calculation:-**

● cement quantity in 60lb = 60/6 = 10lb

● water quantity = 10lb × 0.5 = 5lb

● volume of water = 5/8.345 = 0.6 gallon

● thus you will put 0.6 gallon (little more than 4 pints, 2 quarts, or 1.5 litres) of water mix with a 60lb bag of premix concrete.

**How much water do I need for a 80lb bag of concrete?**

Regarding this, “how much water do I need for a 80lb bag of concrete?”, its depend on water cement ratio and type of grade of concrete, but generally you will need 0.8 gallon (little more than 6 pints, 3 quarts, or 3 litres) of water mix with a 80lb bag of premix concrete. This quantity of water may be little change according to weather condition or temperature.

**Mathematical calculation:-**

● cement quantity in 80lb = 80/6 = 13.33lb

● water quantity = 13.33lb × 0.5 = 6.66lb

● volume of water = 6.66/8.345 = 0.8 gallon

● thus you will put 0.8 gallon (little more than 6 pints, 3 quarts, or 3 litres) of water mix with a 80lb bag of premix concrete.

**How much water do I need for a 90lb bag of concrete?**

Regarding this, “how much water do I need for a 90lb bag of concrete?”, its depend on water cement ratio and type of grade of concrete, but generally you will need 0.9 gallon (little more than 7 pints, 3.5 quarts, or 3.5 litres) of water mix with a 90lb bag of premix concrete. This quantity of water may be little change according to weather condition for temperature.

**Mathematical calculation:-**

● cement quantity in 90lb = 90/6 = 15lb

● water quantity = 15lb × 0.5 = 7.5lb

● volume of water = 7.5/8.345 = 0.9 gallon

● thus you will put 0.9 gallon (little more than 7 pints, 3.5 quarts, or 3.4 litres) of water mix with a 90lb bag of premix concrete.

**How much water do I need for a 50lb bag of concrete?**

Regarding this, “how much water do I need for a 50lb bag of concrete?”, its depend on water cement ratio and type of grade of concrete, but generally you will need 0.5 gallon (4 pints, 2 quarts, or 1.9 litres) of water mix with a 50lb bag of premix concrete. This quantity of water may be little change according to weather condition for temperature.

**Mathematical calculation:-**

● cement quantity in 50lb = 50/6 = 8.33lb

● water quantity = 8.33lb × 0.5 = 4.17lb

● volume of water = 4.17/8.345 = 0.5 gallon

● thus you will put 0.5 gallon (4 pints, 2 quarts, or 1.9 litres) of water mix with a 50lb bag of premix concrete.

**How much water do I need for a 40lb bag of concrete?**

Regarding this, “how much water do I need for a 40lb bag of concrete?”, its depend on water cement ratio and type of grade of concrete, but generally you will need 0.4 gallon (little more than 3 pints, 1.5 quarts, or 1.5 litres) of water mix with a 40lb bag of premix concrete. This quantity of water may be little change according to weather condition for temperature.

**Mathematical calculation:-**

● cement quantity in 40lb = 40/6 = 6.66lb

● water quantity = 6.66lb × 0.5 = 3.33lb

● volume of water = 3.33/8.345 = 0.4 gallon

● thus you will put 0.4 gallon (little more than 3 pints, 1.5 quarts, or 1.5 litres) of water mix with a 40lb bag of premix concrete.

**How much water do I need for a 20kg bag of concrete?**

Regarding this, “how much water do I need for a 20kg bag of concrete?”, its depend on water cement ratio and type of grade of concrete, but generally you will need 1.5 to 2 litres of water mix with a 20kg bag of premix concrete. This quantity of water may be little change according to weather condition for temperature.

**Mathematical calculation:-**

● cement quantity in 20kg = 20/6 = 3.33kg

● water quantity = 3.33 × 0.5 = 1.66kg

● volume of water = 1.66/1 = 1.66 litres (since density of water is 1kg/ litre)

● thus you will put 1.5 – 2 litres of water mix with a 20kg bag of premix concrete.

**How much water do I need for a 25kg bag of concrete?**

Regarding this, “how much water do I need for a 25kg bag of concrete?”, its depend on water cement ratio and type of grade of concrete, but generally you will need little more than 2 litres of water mix with a 25kg bag of premix concrete. This quantity of water may be little change according to weather condition for temperature.

**Mathematical calculation:-**

● cement quantity in 25kg = 25/6 = 4.16kg

● water quantity = 4.16kg × 0.5 = 2.08kg

● volume of water = 2.08/1 = 2.08 litres

● thus you will put little more than 2 litres of water mix with a 25kg bag of premix concrete.

**How much water do I need for a 30kg bag of concrete?**

Regarding this, “how much water do I need for a 30kg bag of concrete?”, its depend on water cement ratio and type of grade of concrete, but generally you will need 2.5 litres of water mix with a 30kg bag of premix concrete. This quantity of water may be little change according to weather condition for temperature.

**Mathematical calculation:-**

● cement quantity in 30kg = 20/6 = 5kg

● water quantity = 5 × 0.5 = 2.5kg

● volume of water = 2.5/1 = 2.5 litres

● thus you will put 2.5 litres of water mix with a 30kg bag of premix concrete.

**How much water do I need for a 40kg bag of concrete?**

Regarding this, “how much water do I need for a 40kg bag of concrete?”, its depend on water cement ratio and type of grade of concrete, but generally you will need 3 to 3.5 litres of water mix with a 40kg bag of premix concrete. This quantity of water may be little change according to weather condition for temperature.

**Mathematical calculation:-**

● cement quantity in 40kg = 40/6 = 6.66kg

● water quantity = 6.66 × 0.5 = 3.33kg

● volume of water = 3.33/1 = 3.33 litres

● thus you will put 3 – 3.5 litres of water mix with a 40kg bag of premix concrete.

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