A municipal environment-friendly concrete antifreeze agent
An environmentally friendly concrete and antifreeze technology, which is applied in the field of building materials, can solve the problems of poor bonding performance, low strength, and reduced concrete compressive, flexural and splitting tensile strength, so as to reduce the impact of compressive strength, The effect of interfacial adhesion enhancement
Active Publication Date: 2019-09-10
温州百捷建设有限公司
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Problems solved by technology
[0004] Since the rubber particles themselves have low strength and are organic matter, their bonding performance with inorganic cement stones is poor, resulting in the infiltration of rubber particles into concrete, which will reduce the compressive, flexural and splitting tensile strength of concrete, especially Compressive strength, and the greater the infiltration of rubber particles, the greater the decrease in concrete strength, which needs to be improved
Method used
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Examples
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Embodiment 1
[0026] Example 1, a municipal environment-friendly antifreeze agent for concrete, which is mainly used for the laying of municipal roads, its raw material components are shown in Table 1 in parts by weight. The municipal environment-friendly concrete antifreeze is prepared through the following steps:
[0027] Step 1: Mix anhydrite, alunite powder and magnesium oxide with each other and stir evenly to obtain the additive.
[0028] In step 2, the additive, rubber powder, coupling agent, and water reducer are mixed and stirred evenly to obtain the antifreeze agent.
[0029] Wherein, the water reducer is calcium lignosulfonate, and the coupling agent is 3-aminopropyltriethoxysilane.
Embodiment 2
[0030] Example 2 is different from Example 1 in that, in parts by weight, the raw material components of the antifreeze are shown in Table 1.
Embodiment 3
[0031] Embodiment 3 differs from Embodiment 1 in that, in parts by weight, the raw material components of the antifreeze are shown in Table 1. Among them, the water reducer is NF naphthalene series high-efficiency water reducer.
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Abstract
The invention discloses an environment-friendly concrete anti-freezing agent for municipal administration, and belongs to the technical field of a building material. The environment-friendly concreteanti-freezing agent is prepared from the following raw materials in parts by weight: 70 to 110 parts of rubber powder, 4 to 6 parts of water reducing agents, 5 to 25 parts of anhydrite, 8 to 25 partsof alunite powder and 10 to 20 parts of coupling agent. The rubber powder is processed by waste and old tires. The rubber is a high molecular material with low elasticity modulus and high viscoelasticity. A method of mixing the waste and old tire rubber powder into concrete is one of the effective methods for using waste and old tires; in addition, the concrete after the rubber powder mixing can relieve the static water pressure; the anti-freezing performance of the concrete can be improved. On end of the coupling agent has stronger affinity on the surface of the rubber powder and generates certain combination; the other end of the coupling agent has stronger affinity on the inorganic concrete and generates certain combination, so that the coupling agent can achieve a bridging effect between the concrete and the rubber powder, so that the interface bonding degree between the rubber powder and the concrete can be reinforced; the influence of the rubber powder on the concrete pressure-resistant intensity is further reduced.
Description
technical field [0001] The invention relates to the technical field of building materials, in particular to a municipal environment-friendly antifreeze for concrete. Background technique [0002] According to the building materials industry standard JC 475-2004 concrete antifreeze is defined as: an admixture that can harden concrete under negative temperature conditions and achieve expected performance and sufficient antifreeze strength under specified curing conditions. It is an admixture that can be placed at low temperatures The substance in which the moisture in the material freezes. [0003] The Chinese patent with the notification number CN100590092C discloses an environmentally friendly and energy-saving concrete antifreeze agent, which is prepared by the following components according to the mass fraction ratio: 100 parts of rubber powder; 2-10 parts of water reducing agent; 10-40 parts of magnesium; 10-40 parts of alum stone powder; 5-30 parts of anhydrite. [000...
Claims
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IPC IPC(8): C04B24/42C04B103/60
Inventor 杨前途张仁浩
Owner 温州百捷建设有限公司