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High compatibility repair mortar and its preparation method and use method
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A repairing mortar and compatibility technology, applied in building maintenance, construction, building construction, etc., can solve the problems of debonding failure and poor compatibility between mortar and the substrate to be repaired, and achieve shortened construction period and good compatibility. , the effect of reducing labor costs
Active Publication Date: 2019-02-19
苏州大乘环保新材有限公司
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Problems solved by technology
However, when the mortar is used to repair existing buildings to be repaired, the compatibility between the mortar and the base material to be repaired is generally poor, and it is easy to cause debonding failure between the mortar and the base material to be repaired due to incompatibility ,Room for improvement
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Embodiment 1
[0048] Step1: In parts by weight, weigh 53 parts of quartz sand, 30 parts of Portland cement, 5 parts of gypsum, 0.8 parts of lithium carbonate, 4 parts of mineral filler, 1 part of ettringite, 0.01 part of sodium dipolyphosphate, carboxymethyl 0.03 parts of cellulose, 1 part of polydimethylsiloxane;
[0049] Step2: Stir the weighed components evenly to obtain the product.
[0050] The mineral filler includes slag, fly ash and limestone powder, and according to the weight ratio, slag: fly ash: limestone powder=1:3:4.
Embodiment 2
[0052] Step1: According to parts by weight, weigh 50 parts of quartz sand, 40 parts of Portland cement, 6 parts of gypsum, 0.2 parts of lithium carbonate, 5 parts of mineral fillers, 0.9 parts of ettringite, 0.02 parts of sodium tripolyphosphate, carboxyethyl 0.04 parts of cellulose, 0.9 parts of fluorosilicone;
[0053] Step2: Stir the weighed components evenly to obtain the product.
[0054] The mineral filler includes slag, fly ash and limestone powder, and according to the weight ratio, slag: fly ash: limestone powder=1:3:6.
Embodiment 3
[0056] Step1: According to parts by weight, weigh 55 parts of quartz sand, 38 parts of Portland cement, 8 parts of gypsum, 0.4 parts of lithium carbonate, 6 parts of mineral filler, 0.7 parts of ettringite, 0.03 parts of sodium hexametaphosphate, carboxypropyl 0.05 parts of cellulose, 0.8 parts of ethylene glycol siloxane;
[0057] Step2: Stir the weighed components evenly to obtain the product.
[0058] The mineral filler includes slag, fly ash and limestone powder, and according to the weight ratio, slag: fly ash: limestone powder=1:4:4.
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Abstract
The invention discloses high-compatibility repair mortar which comprises the components of, by weight, 50-60 parts of quartz sand, 30-40 parts of Portland cement, 5-10 parts of gypsum, 0.4-1 part of lithium carbonate and 4-7 parts of mineral filler, wherein the mineral filler comprises slag, coal ash and limestone flour, and the weight ratio of the slag, the coal ash and the limestone flour is 1:(3-4):(4-6). The high-compatibility repair mortar has the advantages that the compatibility between the high-compatibility repair mortar and a to-be-repaired substrate is high when the high-compatibility repair mortar is used for repairing an existing to-be-repaired building.
Description
technical field [0001] The invention relates to the field of mortar, in particular to a high compatibility repair mortar and its preparation method and application method. Background technique [0002] The Chinese patent with publication number CN104045291A discloses a cement-based self-leveling mortar. The mortar adds special cement with high early strength to ordinary Portland cement, and is compatible with various early strength agents and retarders, so that the mortar has a long working time, short setting time and high early strength. The high molecular polymer is added to the mortar. The high molecular polymer has a short film-forming time and good performance, which can greatly improve the smoothness and flatness of the self-leveling and condensed mortar surface, and improve the wear resistance of the mortar. In order to compensate the volume shrinkage caused by cement hydration, a shrinkage reducing agent and an expansion agent are added to the mortar, which greatly...
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