Quantity of materials required for 1 cubic metre of cement mortar | quantity of cement sand in mortar | quantity of cement and sand in different mix ratio 1:2, 1:3, 1:4, 1:5, 1:6 & 1:8.

Mixture of cement sand and water is known as cement mortar. For preparing mortar first a mixture of cement and sand is made roughly mixing them in dry condition with the help of shovels. Water is gradually added and mix with Shovels. Generally water is added to the mix is about 20% of dry volume.

Cement mortar is used for various purpose it is used to bind masonry units such as stone, bricks, cement blocks, to plaster slab and external and internal walls which make them impervious. It is used to give neat finishing to walls and concrete works, for pointing masonry joints, preparing building blocks, used as a filler material in ferro cement works, to fill joints and cracks in walls & used as a filler material in stone masonry.

There are various cement to sand ratio or mix proportion used to prepare cement mortar such as 1:2, 1:3, 1:4, 1:5, 1:6 & 1:8. When 1 part of cement is mixed with two part of sand then it is called 1:2 mix ratio, 1 part of cement is mixed with 3 part of sand then it is called 1:3 mix ratio, 1 part of cement is mixed with 4 part of sand then it is called 1:4 mix ratio, 1 part of cement is mixed with 5 part of sand then it is called 1:5 mix ratio, 1 part of cement is mixed with 6 part of sand then it is called 1:6 mix ratio and 1 part of cement is mixed with 8 part of sand then it is called 1:8 mix ratio.

Cement to sand proportion recommended for various work are following:- 1) to bind masonry units such as stone, bricks, cement blocks 1:6 to 1:8 mix ratio are best to use, 2) to plaster slab and external and internal walls 1:3 to 1:6 mix ratio are best to use which make them impervious, 3) mix ratio 1:4 is highly recommended for concrete and ceiling plastering, 4) mix ratio 1:3 is used for repairing purpose and 5) mix ratio 1:2 to 1:3 used for pointing.

In this article we briefly discuss about quantities of materials such as cement & sand required for 1m3 of cement mortar for various mix.

**Quantity of materials required for 1 cubic metre of cement mortar**

**For 1:8 mix ratio**

Here given 1m3 of cement mortar, this is wet volume of cement mortar. To calculate dry volume of mortar, multiply the wet volume by 1.33, so tatal dry volume of mortar = 1m3 × 1.33 = 1.33 m3. Cement to sand proportion is 1:8, its means 1 part of cement is mix with 8 part of sand. Total proportion 1+8 = 9, parts of cement in mix is 1/9 and parts of sand in mix is 8/9.

● Cement quantity = 1/9 × 1.33 = 0.147 m3, convert this in kg multiply with unit mass of cement such as 0.147 m3 × 1440 kg/m3 = 212 kg, as you know 1 bag cement weight is 50kg, so number of bags cement = 212÷ 50 = approx 4 bags cement.

● Sand quantity = 8/9 × 1.33 = 1.18 m3, convert in cubic feet = 1.18 × 35.3147 = 41.74 cft, convert this in kg multiply with unit mass of sand such as 1.18 m3 × 1600 kg/m3 = 1888 kg.

In 1:8 mix ratio, for 1 cubic metre of cement mortar, generally you need quantities of materials such as sand is about 1.18m3 (41.74 cft, or 1888kg) and approx 4 bags (0.147 m3, or 212kg) of cement quantity.

**For 1:6 mix ratio**

Here given 1m3 of cement mortar, this is wet volume of cement mortar. To calculate dry volume of mortar, multiply the wet volume by 1.33, so tatal dry volume of mortar = 1m3 × 1.33 = 1.33 m3. Cement to sand proportion is 1:6, its means 1 part of cement is mix with 6 part of sand. Total proportion 1+6 = 7, parts of cement in mix is 1/7 and parts of sand in mix is 6/7.

● Cement quantity = 1/7 × 1.33 = 0.19 m3, convert this in kg multiply with unit mass of cement such as 0.19 m3 × 1440 kg/m3 = 274 kg, as you know 1 bag cement weight is 50kg, so number of bags cement = 274÷ 50 = approx 5.5 bags cement.

● Sand quantity = 6/7 × 1.33 = 1.14 m3, convert in cubic feet = 1.14 × 35.3147 = 40.25 cft, convert this in kg multiply with unit mass of sand such as 1.14 m3 × 1600 kg/m3 = 1824 kg.

In 1:6 mix ratio, for 1 cubic metre of cement mortar, generally you need quantities of materials such as sand is about 1.14m3 (40.25 cft, or 1824kg) and approx 5.5 bags (0.19 m3, or 274kg) of cement quantity.

**For 1:5 mix ratio**

Here given 1m3 of cement mortar, this is wet volume of cement mortar. To calculate dry volume of mortar, multiply the wet volume by 1.33, so tatal dry volume of mortar = 1m3 × 1.33 = 1.33 m3. Cement to sand proportion is 1:5, its means 1 part of cement is mix with 5 part of sand. Total proportion 1+5 = 6, parts of cement in mix is 1/6 and parts of sand in mix is 5/6.

● Cement quantity = 1/6 × 1.33 = 0.22 m3, convert this in kg multiply with unit mass of cement such as 0.22 m3 × 1440 kg/m3 = 319 kg, as you know 1 bag cement weight is 50kg, so number of bags cement = 319÷ 50 = approx 6.4 bags cement.

● Sand quantity = 5/6 × 1.33 = 1.1 m3, convert in cubic feet = 1.1 × 35.3147 = 39.14 cft, convert this in kg multiply with unit mass of sand such as 1.1 m3 × 1600 kg/m3 = 1824 kg.

In 1:5 mix ratio, for 1 cubic metre of cement mortar, generally you need quantities of materials such as sand is about 1.1m3 (39.14 cft, or 1760kg) and approx 6.4 bags (0.22 m3, or 319kg) of cement quantity.

**For 1:4 mix ratio**

Here given 1m3 of cement mortar, this is wet volume of cement mortar. To calculate dry volume of mortar, multiply the wet volume by 1.33, so tatal dry volume of mortar = 1m3 × 1.33 = 1.33 m3. Cement to sand proportion is 1:4, its means 1 part of cement is mix with 4 part of sand. Total proportion 1+4 = 5, parts of cement in mix is 1/5 and parts of sand in mix is 4/5.

● Cement quantity = 1/5 × 1.33 = 0.266 m3, convert this in kg multiply with unit mass of cement such as 0.266 m3 × 1440 kg/m3 = 383 kg, as you know 1 bag cement weight is 50kg, so number of bags cement = 383÷ 50 = approx 7.7 bags cement.

● Sand quantity = 4/5 × 1.33 = 1 m3, convert in cubic feet = 1 × 35.3147 = 35.32 cft, convert this in kg multiply with unit mass of sand such as 1 m3 × 1600 kg/m3 = 1600 kg.

In 1:4 mix ratio, for 1 cubic metre of cement mortar, generally you need quantities of materials such as sand is about 1m3 (35.32 cft, or 1600kg) and approx 7.7 bags (0.266 m3, or 383kg) of cement quantity.

**For 1:3 mix ratio**

Here given 1m3 of cement mortar, this is wet volume of cement mortar. To calculate dry volume of mortar, multiply the wet volume by 1.33, so tatal dry volume of mortar = 1m3 × 1.33 = 1.33 m3. Cement to sand proportion is 1:3, its means 1 part of cement is mix with 3 part of sand. Total proportion 1+3 = 4, parts of cement in mix is 1/4 and parts of sand in mix is 3/4.

● Cement quantity = 1/4 × 1.33 = 0.3325 m3, convert this in kg multiply with unit mass of cement such as 0.3325 m3 × 1440 kg/m3 = 479 kg, as you know 1 bag cement weight is 50kg, so number of bags cement = 479÷ 50 = approx 9.6 bags cement.

● Sand quantity = 3/4 × 1.33 = 0.9975 m3, convert in cubic feet = 0.9925 × 35.3147 = 35.23 cft, convert this in kg multiply with unit mass of sand such as 0.9925 m3 × 1600 kg/m3 = 1588 kg.

In 1:3 mix ratio, for 1 cubic metre of cement mortar, generally you need quantities of materials such as sand is about 0.9925m3 (35.23 cft, or 1588kg) and approx 9.6 bags (0.3325 m3, or 479kg) of cement quantity.

**For 1:2 mix ratio**

Here given 1m3 of cement mortar, this is wet volume of cement mortar. To calculate dry volume of mortar, multiply the wet volume by 1.33, so tatal dry volume of mortar = 1m3 × 1.33 = 1.33 m3. Cement to sand proportion is 1:2, its means 1 part of cement is mix with 2 part of sand. Total proportion 1+2 = 3, parts of cement in mix is 1/3 and parts of sand in mix is 2/3.

● Cement quantity = 1/3 × 1.33 = 0.443 m3, convert this in kg multiply with unit mass of cement such as 0.443 m3 × 1440 kg/m3 = 638 kg, as you know 1 bag cement weight is 50kg, so number of bags cement = 638÷ 50 = approx 13 bags cement.

● Sand quantity = 2/3 × 1.33 = 0.886 m3, convert in cubic feet = 0.886 × 35.3147 = 31.31 cft, convert this in kg multiply with unit mass of sand such as 0.886 m3 × 1600 kg/m3 = 1418 kg.

In 1:2 mix ratio, for 1 cubic metre of cement mortar, generally you need quantities of materials such as sand is about 0.886m3 (31.31 cft, or 1418kg) and approx 13 bags (0.443 m3, or 638kg) of cement quantity.

Regarding this,** “how much quantity of cement sand is required for 1m3 of cement mortar?”,** in 1:6 mix ratio, for 1 cubic metre of cement mortar, generally you need sand is about 1.14m3 and approx 5.5 bags of cement quantity, for 1:8 mix – sand 1.18m3 and 4 bags cement, for 1:5 mix – sand 1.1m3 and 6.4 bags cement, for 1:4 mix – sand 1m3 and 7.7 bags cement, for 1:3 mix – sand 1m3 and 9.6 bags cement and for 1:2 mix – sand 0.886m3 and 13 bags cement are required.