About fuzhou crack-resistance waterproofing agent dosage and usage

Fuzhou crack-resistance waterproofing agent used in cement concrete, a compressive anti-seepage effect! Crack water-proofing agent is also called the anti-freezing type water-proofing agent, anti-freezing type water-proofing agent is composed of antifreeze and water-proofing agent composite, a cluttered market at present, the performance good, JF - C type fiber, used for daily lowest temperature - More than 15 ℃ environment construction of waterproof concrete or mortar project! Fuzhou crack-resistance waterproofing agent dosage and usage: 1, content: x 3 - C 5%, before mixing, mixer is washed with hot water or steam. First stir in sand and gravel and hot water for 1 min, then stir in cement and waterproofing agent 3 min. According to ensure the concrete into the mold temperature is 10 ℃ or higher to determine the temperature of the mixing water. The temperature is not lower than - 5 ℃, using hot water. The temperature is below - 10 ℃ when, in order to satisfy the concrete into the mold temperature, sand also need to be heated. 2, in normal construction under the condition of workability, reduce water consumption as far as possible; Because, in the concrete free water increased, antifreeze performance is significantly lower. Mixing concrete mixing of this agent has the characteristics of dry and not hard, don't pay attention to control the new pouring concrete slump is too big. 3, sand, stone with canvas or plastic cover, plus heat preservation material, prevent sand freeze. Cement shall not directly heated, before using 1 d transported into the greenhouses in the store, keep it is warm. 4, before pouring concrete, should clear the snow and ice and dirt on the template and reinforced. Keep clear container adhesive residue of concrete and cleared of snow and ice frozen block, the containers must be tightly covered insulation. The new pouring concrete exposed surface, covered with plastic sheeting and thermal insulation materials in time, under the condition of negative temperature curing, concrete shall not be watered. According to increases with the increasing pouring, vibrating, along with the insulation cover the principle of continuous operation. 5, concrete antifreeze critical strength of 5 mpa. Common dong shi method has two kinds: comprehensive heat storage method 1 = + + thermal insulation antifreeze curing composite heat storage materials heating method 2 = raw materials + + efficient thermal insulation, antifreeze short-term heat 6, 32 strength grade of cement should be chosen. More than 5 Portland cement or Portland cement. Sand, stone cleaning sieve, shall not contain ice, snow and freezing and frost crack of the material.