Sand -concrete M350 is considered the best building material. Sand concrete is sold in the form of dry mixtures and is widely used in the world market. The building material is packed in packaging, which I have a weight of 40 kg and above. Unlike many building materials, M 350 is considered a durable and reliable material. Has no negative qualities, tolerates temperature changes well, and also does not corrode. It is considered reliable material, because when laying it does not have shrinkage. It is better to use such building material for building structures with large loads.