Cement concrete

A technology of cement concrete and waste concrete, which is applied in the field of cement concrete, can solve the problems of not being able to effectively reduce sand with high mud content, the performance of admixture is single, and cannot meet various needs, and achieve the effect of reducing costs

Inactive Publication Date: 2019-01-15
淮安市冰青建设工程管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing concrete admixtures can reduce mixing water, increase workability, control setting time, early strength, reinforcement, durability, dyeing, air-entrainment, etc., but the admixtures generally have single performance and cannot meet various needs. , and there is no admixture that can effectively reduce the impact of high mud content sand on the performance of concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A cement concrete, including raw materials: 30 parts of cement, 16 parts of ceramic waste, 35 parts of crushed stone, 35 parts of waste concrete, 3 parts of admixture, and 30 parts of lightweight filler.

[0018] Wherein, the light filler is a mixture of light calcium carbonate and diatomite, and the weight ratio of the light calcium carbonate to diatomite is 4:1.

Embodiment 2

[0020] A cement concrete, including raw materials in parts by mass: 35 parts of cement, 14 parts of ceramic waste, 30 parts of gravel, 40 parts of waste concrete, 5 parts of admixture, and 10 parts of lightweight filler.

[0021] Wherein, the light filler is a mixture of light calcium carbonate and diatomite, and the weight ratio of the light calcium carbonate to diatomite is 6:1.

[0022] Additives described in Examples 1 and 2, in parts by mass, 40-50 parts of polycarboxylate water reducer, 15-20 parts of cellulose grafted chitosan, 15-20 parts of flue deposits , 5-10 parts of silane coupling agent, 1-5 parts of polyvinylpyrrolidone, 1-5 parts of silicon carbide, 3-6 parts of hollow glass microspheres, 5-10 parts of silica-coated titanium dioxide, 2- 8 servings.

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PUM

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Abstract

The invention belongs to the technical field of concrete, and in particular relates to a cement concrete. The cement concrete includes the following raw materials (by weight): 30-35 parts of cement, 14-16 parts of ceramic waste, 30-35 parts of crushed stone, 35-40 parts of waste concrete, 1-5 parts of an admixture, and 10-30 parts of a lightweight filler. Part of building waste concrete is added into the concrete formula to replace part of sand and crushed stone after processed, thus changing waste into valuable things and lowering the cost. The invention provides a concrete with high mud content. Sand with high mud content can be used as a raw material of the concrete; and with the introduction of the admixture, the concrete with high mud content still can meet building requirements.

Description

technical field [0001] The invention belongs to the technical field of concrete, and in particular relates to cement concrete. Background technique [0002] Concrete is the most widely used building material in modern times. It has the advantages of abundant raw materials, low price, simple process, high strength and good durability. Ready-mixed concrete is a kind of concrete, which refers to cement, aggregates, water, admixtures, mineral admixtures and other components mixed in according to a certain proportion in a mixing station after being measured and mixed, and sold. Concrete mixture transported to the place of use within the specified time by transport truck. Because of the high environmental impact of on-site construction, ready-mixed concrete has received increasing attention. However, after mixing concrete materials, chemical reactions will occur over time, which will have adverse effects on concrete fluidity, slump loss, workability, etc. Therefore, ready-mixed ...

Claims

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Application Information

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IPC IPC(8): C04B28/02
CPCC04B28/02C04B2111/00017C04B18/165C04B14/02C04B18/16C04B14/28C04B14/08C04B24/38C04B18/08C04B24/42C04B24/2652C04B14/324C04B14/22C04B14/305C04B14/06C04B20/002C04B2103/302
Inventor 刘传礼
Owner 淮安市冰青建设工程管理有限公司
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