Road disease controlling grouting reinforcement material and preparation method thereof
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A technology for grouting reinforcement and road damage, applied in the field of material preparation and grouting reinforcement materials, can solve the problems of affecting the grouting reinforcement effect, easy dispersion of grout, slow strength formation, etc., to overcome the slow and good strength formation. Anti-dispersion properties, the effect of improving early strength
Active Publication Date: 2019-02-01
HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD
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Problems solved by technology
Chinese invention patent CN 106587784 discloses a method for preparing double-liquid grouting materials with blast furnace slag powder as the main raw material, but the setting time is too long (more than 3 hours for initial setting), and the strength formation is slow; Chinese invention patent CN 106145798 records A method for preparing a fast-setting two-liquid grouting material with mineral powder and red mud as raw materials, but when this grouting material is used in a hollow base or a weak roadbed rich in open water, the grout is easy to disperse and the setting time is short. Tens of minutes to several hours are extended to varying degrees, and it is not easy to control, the strength is formed slowly, and the traffic cannot be opened quickly, which affects the effect of grouting reinforcement
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Embodiment 1
[0029] Example 1 Preparation of grouting reinforcement materials for treating road diseases
[0030] 1. Prepare materials
[0031] 100 parts of S95 slag powder, 40 parts of C-grade fly ash, 20 parts of rapid hardening sulfoaluminate cement, 30 parts of fine sand, 0.2 parts of 6mm polypropylene fiber, 1.6 parts of naphthalene-based superplasticizer, 3 parts of lithium carbonate, 2 parts of tartaric acid, 80 parts of water; 100 parts of sodium water glass with modulus 1.2 (solid content 42%), 2 parts of polyacrylamide flocculant;
[0032] 2. Preparation method
[0033] 1) First, add S95 slag powder, C-grade fly ash and rapid-hardening sulphoaluminate cement into the grouting mixer, and then add fine sand, naphthalene-based high-efficiency water reducer, lithium carbonate, tartaric acid and water Add it in order, and stir for 8 minutes at a speed of 50-100r / min; finally add 6mm polypropylene fibers, and stir for 8 minutes at a speed of 300-500r / min to obtain component A;
[00...
Embodiment 2
[0037] Example 2 Preparation of grouting reinforcement materials for treating road diseases
[0038] 1. Prepare materials
[0039] 100 parts of S95 slag powder, 100 parts of C grade fly ash, 40 parts of fast hardening sulfoaluminate cement, 50 parts of fine sand, 0.4 part of 6mm polypropylene fiber, 2.5 parts of naphthalene series superplasticizer, 4 parts of lithium carbonate, 4 parts of tartaric acid, 120 parts of water; 100 parts of sodium water glass with modulus 1.0 (solid content 40%), 4 parts of polyacrylamide flocculant;
[0040] 2. Preparation method
[0041] With embodiment 1.
[0042] In practical application, component A and component B can be pumped separately through a grouting pump, and then mixed at a volume ratio of 2:1 through a three-way pipe and then injected into the empty base of the road; the setting time of the mixed grouting material is 11min, 12h compressive strength is 11.7MPa.
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Abstract
The invention discloses a road disease controlling grouting reinforcement material. The road disease controlling grouting reinforcement material is formed by mixing a component A and a component B ata volume ratio of 2:1, wherein the component A is prepared from, by weight part, 20-120 parts of ground slag, 10-110 parts of coal ash, 12-44 parts of cement, 12-110 parts of fine sand, 0.15-0.5 partof fiber, 1.2-4.5 parts of water reducer, 2-6 parts of hardening accelerator, 1-4 parts of retarder and 50-130 parts of water; the component B is prepared from alkaline activator and flocculant at a ratio of 100:1-6. By adding the flocculant into the alkaline activator, slurries can achieve good dispersion resistance inside water-enriched gapped base layers and weak subgrades and can be rapidly coagulated to form reinforcement, so that the shortcoming that traditional slurries are prone to dispersion and low in reinforcement forming in a water-enriched environment can be overcome; by adding the fine sand into the road disease controlling grouting reinforcement material, under the condition of extensive water-enriched gapping, the flocculation effects of the flocculant can be improved, andcoagulation and reinforcement forming of the slurries can be accelerated; by adding a small mount of the hard cement into the road disease controlling grouting reinforcement material, coagulation of the mixed slurries can be further accelerated, and early strength can be improved.
Description
technical field [0001] The invention relates to a construction material for treating road diseases, in particular to a grouting reinforcement material for treating road diseases, and also relates to a preparation method of the material. Background technique [0002] Under the comprehensive action of traffic load and complex natural environment, the road will suffer from the erosion of the base layer, the subsidence of the subgrade wet and soft, and the lack of local strength. At present, the commonly used treatment and maintenance technologies for these diseases in actual engineering mainly include various thin-layer overlay treatments, excavation and resurfacing, and grouting reinforcement. Among them, grouting reinforcement has become an important way to treat the above diseases due to the advantages of simple process, low cost, and fast open traffic, and the grouting material is the key factor affecting the effect of grouting reinforcement. At present, the commonly used ...
Claims
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Application Information
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