High-permeability pervious concrete cementing agent and preparation method and application thereof
A permeable concrete and high-permeability technology, applied in the field of construction, can solve the problems of anti-stripping, poor cracking and impact resistance, lower tensile strength than compressive strength, construction environment pollution and decoration waste, etc., to achieve excellent mechanical properties, Good effect and strong practical application value
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[0020] The present invention will be further described below with examples.
[0021] Each raw material of the high-permeability water-permeable concrete binder of embodiment 1-3 is shown in the following table:
[0022] Unit: ㎏
[0023] Example 1 2 3 furfurone resin 2 2.5 3 cement 100 100 100 epoxy resin 4 5 6 Hardener 1 1.5 2 Toughening agent 2 3 4
[0024] The cement was ordinary Portland cement of grade 42.5.
[0025] The furfurone resin is composed of furfural and acetone, and the weight ratio of furfural and acetone is 2:1 to 4:1. o Prepolymers obtained by heating at C for 2 hours.
[0026] The epoxy resin is commercially available E-44, the molecular weight is 450, the shrinkage rate is 1.%-2%, and the thermal expansion coefficient is 6-10.5%.
[0027] The toughening agent is a polyurethane synthesized by using water-soluble 2,4-toluene diisocyanate and trimethylolpropane.
[0028] The cur...
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