Commercial concrete is calculated on a cubic basis, and local construction authorities will formulate information prices of various concretes every month according to various local building raw materials. Concrete is generally divided into pumping and non-pumping, and the actual price can be negotiated with the local concrete company.
According to the standard compressive strength of concrete (cube with side length of 150mm as the standard specimen, cured for 28 days under standard curing conditions, the strength grade measured by standard test method with 95% guarantee rate is called label.
Concrete:
The abbreviation of "concrete (tóng)" refers to the general name of engineering composite materials whose aggregates are bonded into a whole by cementing materials. Generally speaking, the term concrete refers to cement as cementing material and sandstone as aggregate; Cement concrete, also known as ordinary concrete, is made of water (which can contain additives and admixtures) in a certain proportion and is widely used in civil engineering.
Rubble concrete is to add a certain amount of rubble to concrete, which is usually also called rubble concrete. According to Article 3.2.2 of Code for Design of Highway Masonry Bridges and Culverts (JTG D6 1-2005), flaky concrete is concrete with a content not exceeding 20% of its volume.