[amp_mcq option1=”5%” option2=”10%” option3=”15%” option4=”20%” correct=”option1″]<\/p>\n
The correct answer is A. 5%.<\/p>\n
When hand mixing concrete, it is important to add a little extra cement to the mix. This is because hand mixing is not as effective as machine mixing, and the extra cement helps to ensure that the concrete is strong and durable.<\/p>\n
The amount of extra cement that needs to be added will vary depending on the type of concrete being mixed, the size of the batch, and the experience of the person mixing the concrete. However, a good rule of thumb is to add 5% extra cement for hand mixing.<\/p>\n
It is important to note that adding too much extra cement can make the concrete difficult to work with. It is also important to make sure that the extra cement is evenly distributed throughout the mix.<\/p>\n
Here is a brief explanation of each option:<\/p>\n
[amp_mcq option1=”5%” option2=”10%” option3=”15%” option4=”20%” correct=”option1″]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[641],"tags":[],"class_list":["post-5955","post","type-post","status-publish","format-standard","hentry","category-concrete-technology-and-design-of-concrete-structures","no-featured-image-padding"],"yoast_head":"\n