First, read the English article below.

Concrete is usually enough to bind together minor wall damage. If the cracks or holes don't take up the majority of the block or extend to more than a few blocks, try using concrete to fill in the damage. Purchase a bag of pre-mixed concrete and empty the bag into a bucket or concrete tray. Pour the instructed amount of water into the mix and stir it with a hoe or shovel. If you prefer, you can make the concrete yourself instead of using a pre-mixed bag. Although the wall should not be wet when applying the concrete, lightly misting the cracks or holes so they are damp can help it adhere better. Fill a handheld bottle with water and spritz any gaps before you add the concrete. Apply concrete to any gaps in the blocks or mortar using a shovel. Fill the holes and cracks as deeply as you can, then scrape the top over with a trowel so the concrete can patch the wall together evenly. 

Now, please write a short abstract for it in Indonesian. Abstract:
Tambal retakan atau lubang kecil dengan semen. Aduk semen. Semprot retakan atau lubang dengan botol semprot. Tutup retakan atau lubang dengan semen.