Great question. In casual use, people often say “cement mixer” and “concrete mixer” to mean the same rotating drum machine. Technically, cement is just one ingredient in concrete (cement + sand + gravel + water). Here’s how to think about it:

• Drum mixers: Typically used for concrete and larger batches of mortar. You’ll see capacities ranging from about 1.6 to 5 cubic feet on Walmart.com.
• Handheld/paddle mixers: Better for buckets of mortar, grout, stucco, thinset, or coatings.
• Picking the right tool: Match the mixer to your material (concrete vs. mortar), batch size, and portability needs.

When browsing, check the product description for intended materials and capacity so you’re set up for the right job.

You can estimate it with a simple approach:

1. Find the mixer’s usable batch capacity. Usable capacity is often less than the advertised drum volume; many manuals suggest filling about half to two-thirds for best mixing.
2. Check the bag’s yield. The volume per 80 lb bag is printed on the bag (varies by brand and mix).
3. Do the math. Divide the usable capacity by the bag’s yield for a rough bag count.

Typical guidance (varies by mix and technique):

• Small 1.6–2.5 cu ft drum: about 1 bag per batch.
• Mid 3–4 cu ft drum: about 2 bags per batch.
• Larger ~5 cu ft drum: about 2–3 bags per batch.

Always follow the mixer’s manual and avoid overloading; mix consistency and aggregate size can change batch size.

It can be, but it depends on project size and logistics. Consider:

• Quantity: For small jobs (steps, posts, patches), bagged mix plus a compact mixer can be cost-effective.
• Equipment: Owning or renting a mixer adds cost; frequent use may justify ownership.
• Waste & timing: Mixing on site helps you make only what you need and pour on your schedule.
• Labor & speed: DIY batching takes time and effort; larger pours may benefit from faster supply options.
• Access: Tight sites or remote areas can favor on-site mixing.

Comparing total material, equipment, and time costs for your specific project can help you decide. Browsing capacity and power options on Walmart.com can also align the tool choice with your budget.

Mix ratios describe volumes of cement : sand : gravel. In general, a 1:2:4 mix is “richer” (more cement) than 1:3:3, which can offer higher potential strength if all else is equal. That said, actual strength depends heavily on water-to-cement ratio, curing, aggregate quality, and placement.

• 1:2:4: Often chosen for higher strength targets with proper water control.
• 1:3:3: Slightly leaner; can be workable for general-purpose uses.

For predictable results, pre-blended bag mixes list compressive strength on the packaging. Always follow project specifications and local codes, and adjust water carefully to balance workability and performance.

Cleaning right away can help extend the tool’s life and performance:

1. Disconnect power and use PPE. Unplug or switch off; wear eye protection and gloves.
2. Scrape and rinse. Remove leftover material with a plastic or wooden scraper, then rinse the drum.
3. Scour gently. Add a few inches of water and a small amount of clean gravel; rotate the drum briefly to loosen residue.
4. Drain and rinse again. Repeat until clean. Avoid harsh chemicals unless the manufacturer approves them.
5. Clean handheld paddles by spinning in a bucket of clean water, then dry.

Dispose of rinse water per local guidelines—avoid storm drains and soil—and store the mixer dry to help reduce rust and buildup.