Re: Sand, Gravel & Cement Smart Mixing

Here is the ratio of Cement:Sand:Gravel

Column and Footing - Class A (1:2:4)
Concrete Hollow Block Footing - Class B (1:2 1/2:5)
Reinf. Concrete Slab & Beam - Class A (1:2:4)
Slab on fill - Class C (1:3:6)

Example if I'm going to pour concrete on column. I need the Class A Mixture that requires (1:2:4) ratio.
A 40 kg Bag Cement is approximately 1 cu.ft. You need 2 cu.ft of sand & 4 cu.ft of gravel for the proper mixture. We just used the empty cement bag for sand & gravel ratio. Simply 1 bag cement, 2 bags sand & 4 bags gravel. Then clean water to make a pliable paste.

Re: Sand, Gravel & Cement Smart Mixing

Ngayon alam na natin yun tamang mixture.

If I'm going to pour concrete on 2 columns with size .3m x .3m x 3m height. How many cement, sand and gravel do I need.

Simply compute the total volume = .3x.3x3 x 2columns = .54 cu.m.

For class A Mixture
CV (Concrete Volume) x 7.85 = No. of cement = (.54x7.85) = 4.2 or say 5 bags
CV (Concrte Volume ) x .42 = No. of cu.m of sand = (.54x.42) = .23 cu.m Sand
CV (Concrete Volume ) x .84 = No. of cu.m gravel = (.54 x .84) = .46 cu.m Gravel

Add 10% allowance for wastage.

Hope this will help you.

Re: Sand, Gravel & Cement Smart Mixing

sir beginners question 🙂

1. kung yung hump lang po sa garahe na may wash out, puwede po bang wash out sand and cement lang ang mix at ano po yung ratio?

2. butas po na tatabunan ng cement at gagawing daanan , ano po ang ratio ng cement sand at gravel?

thank you po

Re: Sand, Gravel & Cement Smart Mixing

Hi there bro custom888

Bro answers to you two questions will depend on how long and wide will the hump be and the hole you intend to fill up or cover will also depend on how deep and wide the ground hole but basically you can base them all mixing ratios in sir bryant77's reply.

GOOD LUCK ! 😉

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BTW, this is a bit OT here, could you kindly introduce yourself in the MEMBER INTRODUCTIONS, since you are a newly registered member here. Can you give us some information about yourself and what do you usually DO as a DIYer, we'd like to know you better as a new member.

Thanks,
rosy

Re: Sand, Gravel & Cement Smart Mixing

a bit of OT here, are those Additive Mixture that claim to strengthen the concrete, do they really live up to their promise?

Re: Sand, Gravel & Cement Smart Mixing

Slab on fill - Class C (1:3:6)

how many Cubic ft can this mix produce?

how many Water do i put?

Thankx

Re: Sand, Gravel & Cement Smart Mixing

Class C (1:3:6) Concrete Mix

CV x 5.49 = No. of bags cement
CV x 0.44 = No. of cu.m. Sand
CV x 0.89 = No. of cu.m. Gravel

Water to make a pliable paste.

Re: Sand, Gravel & Cement Smart Mixing

Thankx sir Bry

Class C (1:3:6) Concrete Mix

CV x 5.49 = No. of bags cement
CV x 0.44 = No. of cu.m. Sand
CV x 0.89 = No. of cu.m. Gravel

ask lang fix value ba yung 5.49 , 0.44 , 0.89? if sa Class B anu value niyan?

Re: Sand, Gravel & Cement Smart Mixing

May tanong lang po ako sa mga masters dito. . .

Ano po dapat gamitin for wall finishing? Rough kasi masyado ang walls. I was thinking perhaps we can create a wall finishing for it. Thanks po.

Sir, yung reference po ng cement dito per bag, 40 kg or 50 kg?

in PH, most of the cement are sold in 40kg bags ... cheers

Boo!

Hello po...
Gagawa po ako sanan ng Hollow kaso hindi ko po alam kung ano po ratio ng isang bag ng cement vs sand? anyone knows how? and the ratio of the sand and cement???

Hello po...
Gagawa po ako sana ako ng Hollow Blockl kaso hindi ko po alam kung ano po ratio ng isang bag ng cement vs sand? anyone knows how? and the ratio of the sand and cement???

Sir, magtatanong po sa ako kung anong specific store ang merong class c portland cement?