Rubble concrete is a branch of concrete, but mouse concrete and concrete are different. Rubble concrete is mostly used in some foundation projects, mainly for foundation and padding. Rubble concrete is mainly used to reduce the amount of cement, because too much cement can easily lead to cracking of concrete after solidification. Most buildings usually choose rubble concrete when building foundations. Rubble concrete is relatively thick and can be used as various external walls. Now let's look at the construction method of rubble concrete.

Introduction of rubble concrete construction method

(a), material requirements:

1. Rubble: the specification is about 20 ~ 40 cm, with no weathering and clean surface. 2. Concrete: C 15 concrete shall be inspected one by one, and the quality shall meet the requirements.

(2) Main machines and tools: concrete mixers and vibrating rods. building technology

(3) Technological process: cleaning the foundation trench → erecting the "horse path" by formwork → pouring concrete of Sanhuihui → filling stone → pouring concrete to ▽-6.855m→ pouring concrete → filling stone → pouring concrete for leveling (▽-4.00m)→ curing.

(4), construction methods and technical requirements:

1. Construction technology: The construction technology of rubble concrete is to mix ordinary concrete, pour a layer of ordinary concrete with a thickness of about 15cm in the formwork to be poured, then lay another layer of rubble on the ordinary concrete, and then pour concrete on the paved rubble (this layer of concrete must be covered with rubble to leave room), and finally pour alternately. There should be a certain gap between rubble and rubble, which can't directly contact and accumulate, and must be filled with concrete (subject to the fact that concrete can be filled and compacted between rubble), and there should be no dirt and other sundries on the rubble surface.

Rubble should keep a certain distance from the template (on the principle of not damaging the template when vibrating, there should be no exposed rubble). When placing rubble, you must slide down with wooden boards and chutes, and you must not bring it into the soil. Don't throw it around at will. Where the riprap is dense, there should be a special person for secondary pouring to ensure that the rubble room is filled with concrete. Rubble mixed in concrete shall be solid, without weathering, clean and without cracks, and its strength grade shall not be lower than MU20. Rubble size shall not be greater than 0/3 of the minimum width of the pouring part and shall not be greater than 30cm. If there is sludge and scale on the surface, rinse it with water.

2, pouring, should first spread a layer of 10- 15cm thick concrete base, and then spread rubble, shall not be placed first, and then pouring concrete.

This paper introduces the construction method of rubble concrete. Do you know how rubble concrete is constructed now? The thickness of flaky concrete must be ensured during construction. Generally speaking, the thickness of flaky concrete should not exceed 400 mm. When pouring rubble concrete, a layer of concrete must be laid first to lay the foundation, and then rubble must be laid. After the construction, it must be seamless, and a large number of rubble must not be directly exposed on the concrete surface, otherwise it will be ugly.

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