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Questions tagged [cement]

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3answers
9k views

How to do I calculate how much sand and cement needed for bedding mortar

I need to make some bedding mortar for laying coping stones on a brick wall Ive calculated the volume of mortar needed 12m x 0.41m x 0.03m = 0.1476 m3 I buy cement and sand in 25 kg bags and would ...
0
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2answers
1k views

This hole in a concrete porch needs fixing

I might buy this house and have never lived there. The porch has an big air space of maybe 4 feet underneath the slab. Some of the rebar at the bottom edge of the slab is visible when peering in. The ...
1
vote
0answers
346 views

What causes these chips in a cement brick wall, and how can I fix them?

I have found my exposed basement cement wall which is about 15 x 10 in size to have quite a few areas where there is a cracked chip ranging from approx 0.5" in diameter to 2" in diameter and a few ...
1
vote
1answer
358 views

Poured Cement wall repair and stucco

So I live in Ecuador and this house has been forgotten for 15 years. All of the walls are poured cement with stucco on them. This seems to work fine, except at times the water seeps in and ruins the ...
28
votes
7answers
22k views

Pouring concrete, is it safe to add large rocks to increase volume?

Backround I'm going to pour some concrete to anchor a swing set. The base of the swing set that is being anchored is two 4x4s with a 2x4 footer crossed perpendicularly to the 4x4s. I have a bunch of ...
2
votes
2answers
506 views

How strong are my two ten foot poles?

I have made a bat house and now I have put it up. To do so I purchased two teen foot galvanized steel poles at Home Depot, and attached them together. Where they meet I drilled a hole through the two ...
1
vote
0answers
73 views

Should I use platicizer as an additive to mortar

I keep having problems with the joints in my patio flags, after each winter the joints often break up and it is a major job to keep the patio in good condition. I usually use a mix or Portland cement ...
2
votes
1answer
311 views

Foundation Cinderblock Chipped Repair

I seem to have a fairly large chip in one of my foundation cinderblocks. Is this type of damage repairable as a DIY project?
4
votes
2answers
6k views

In CLAY soil, looking for best method to set wood fence posts?

I am getting ready to install a wood fence. My problem is I have soil that is mostly clay. What is the best method to install posts in poor draining clay, giving me the best longevity?
2
votes
3answers
40k views

How long and how often should I water my concrete?

I have just applied cement on some stone joints, and I was wondering for how long should I pour water on it? How frequently should I apply water? Is it twice a day, or thrice a day? I really need to ...
0
votes
1answer
80 views

Whats size concrete aggregate

Not sure on what size stone/gravel i should use, 10 mm or 20 mm in my cement mix 1 cement + 2 sharp sand + 3 gravel (10mm or 20mm) ? I need to fill 4 gully's in an internal concrete floor, each about ...
5
votes
2answers
11k views

How to mix a resurfacer/leveler with sand and cement?

Disclaimer: No, I can't buy ready made surface leveler, because in Brazil this doesn't exist. I need to use a resurface a dry pack levelling that my previous contractor made a lousy job (porous ...
3
votes
3answers
1k views

How do I prepare exterior concrete walls for painting?

My house exterior walls are cement - how do I prep it before painting? Here's some photos. I'm thinking maybe a pressure washer but would prefer an easier, less messy alternative if available. I read ...
1
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3answers
3k views

What could have caused an electrical shock from a concrete patio?

I didn't feel it myself, but my son-in-law and my own son said they were shocked when they touched the cemented ground in our backyard. We bought a new metal fire pit which we had set up and both men ...
1
vote
0answers
412 views

How to fix concrete delamination

When I made some concrete flooring (my first time doing it) I finished the surface while there was still bleed water (I didn't know it better back then). Now 2 months later in a few areas there is ...
1
vote
1answer
1k views

Can I use EP 80W/90 oil instead of EP90 oil in a Belle MiniMix 150 gearbox?

I have a Belle MiniMix 150 110V Electric Cement Mixer the documentation says to use a EP90 oil, but these days it seems that most outlets only sells EP80/90 oil. What is the difference and doe sit ...
5
votes
4answers
17k views

Resetting fence posts in very wet conditions

This winter the Minnesota frost heaved up 5 fence posts in my yard. I've pulled out the 5 posts, and have found basically puddles of water and very very wet mud. I shop-vac'd out the standing ...