34results about How to "Reduce road construction costs" patented technology

The present invention is sludge curing agent and its application, and belongs to the field of soil treating chemicals technology. The sludge curing agent includes powdered components and liquid components, the powdered components include cement clinker 30-60 weight portions, slag 30-60 weight portions, lime 3-8 weight portions, gypsum 1-7 weight portions and other sulfates 1-7 weight portions; and the liquid components include polyacrylamide 5-30 weight portions, polyaluminum chloride 0-20 weight portions, mannitol 0-30 weight portions, lignosulfonate 20-80 weight portions, lignosulfonate-iron or chromium ion complex 0-30 weight portions, alkylphenol ethoxylate 0.2-2 weight portions, tannin 0-10 weight portions, humate 0-10 weight portions, and alpa-olefin sulfonate 0.2-2.5 weight portions. The sludge curing agent has low cost, small consumption, high cumulate strength and high cumulate water tolerance, and may be applied widely.

The invention relates to a curing agent and a construction method of weak soil. The curing agent of the weak soil is characterized by comprising powder and liquid, wherein the powder comprises cementand congealing stones or the following materials in parts by weight: 0-20 parts of cement clinker, 60-95 parts of grain slag or slag, 1-5 parts of lime, 1-5 parts of plaster, 1-5 parts of anhydrous sodium sulphate, 0-10 parts of caustic soda, 0-10 parts of water glass and 0.1-3 parts of sodium fluosilicate; the liquid comprises the following components in parts by weight: 1-15 parts of polyacrylamide, 20-60 parts of pulp waste liquid, 10-40 parts of cement retarder, 0.5-1.5 parts of OP emulsifier, 0.3-1.0 part of carrageenan, 0.3-1.0 part of xanthan gum and 0.5-1.5 parts of alpha-olefin sulfonate. The curing agent is previously prepared into seriflux before being used, and the weak soil and the curing agent seriflux are uniformly stirred by mechanical stirring equipment and then are spreador compacted. The addition quantity of the powder is greatly reduced because a small quantity of the liquid is added; in addition, materials can be easily obtained, and the performance of consolidated soil is superior, thus the curing agent of the weak soil, i.e. sludge and the like, has high efficiency and environmental protection.

The invention discloses a beach sludge composite curing agent as well as a preparation method, a use method and an application thereof. The beach sludge composite curing agent is obtained by mixing and grinding of an ordinary Portland cement clinker, a sulphoaluminate cement clinker, phosphogypsum, desulfurization gypsum, mineral waste residues, a naphthalene-based additive and sulfates, wherein the weight percentages of the raw materials are as follows: 40-60% of the ordinary Portland cement clinker, 5-10% of the sulphoaluminate cement clinker, 2-4% of the phosphogypsum, 3-6% of the desulfurization gypsum, 30-50% of the mineral waste residues, 1-3% of the naphthalene-based additive and 3-5% of the sulfates. The beach sludge composite curing agent disclosed by the invention can greatly shorten the curing time of sludge, and is small in doping amount, high in concretion strength, low in construction cost, and good in curing stability.

The invention relates to an environment-friendly curing agent for stabilizing soil, which can improve the bearing capacity of a subgrade. The curing agent for stabilizing the soil is characterized by comprising the following components in parts by weight: 2-18 parts of polyanionic cellulose, 2-6 parts of sodium sulfate or calcium sulphate, 12-50 parts of sulfonic acid, 2-53 parts of granulated blast furnace slag, 1-5 parts of neutral water glass and 38-150 parts of water. The curing agent for stabilizing the soil can remarkably improve the bearing capability of the cured soil and has good antiseepage effect and durability, and the situation of argillization can be reduced after the curing agent is soaked in the water; therefore, the environment-friendly curing agent is suitable for various construction pavements, in particular rural roads developed for travel and agriculture with the requirements of low cost, short construction period and fast effect. The environment-friendly curing agent not only improves the road construction quality, but also makes the material application and the construction process more environment-friendly, can be further applied to the base course and surface course of road and construction engineering and the fields of wind prevention and sand consolidation, canal seepage control, burning-free low-carbon environment-friendly bricks and the like, and is suitable for the semimechanical operation and the large-scale mechanical construction operation in country.

The invention belongs to the technical field of road engineering and specifically relates to a recycled pavement structure and a road construction process thereof. The recycled pavement structure comprises base courses and surface courses. The base courses include the cement stabilized muck subbase course, the cement stabilized recycled aggregate base course and the foamed asphalt cold-recycled mixture flexible base course which are arranged from bottom to top. The surface courses include the warm-mixed recycled asphalt mixture lower surface course and the warm-mixed rubber asphalt mixture upper surface course. Through the recycled pavement structure, large-scale and high-value utilization of construction waste recycled materials can be realized, the recycling rate of construction waste reaches up to 95% or more, the utilization ratio of recycled aggregate can reach up to 100%, and the ratio of the recycled materials in an overall pavement structure can reach up to 80%-90%. Comprehensive recycling on solid waste such as construction waste is realized, and the requirements of relevant specifications are met. There is no need to conduct degrading utilization on the recycled aggregate. The effects of energy conservation and emission reduction are achieved. The environment is protected. Exploitation and consumption of new aggregated rocks can be reduced. The construction funds canbe saved.

The invention provides a rock-soil solidifying agent. Based on the total mass of the rock-soil solidifying agent, the rock-soil solidifying agent is prepared from such raw materials in parts by weight as fluorgypsum powder, zinc sulfate, polyester resin powder, acid, methylbenzene, early strength agent, sodium dodecyl sulfate and lignosulfonate. The rock-soil solidifying agent has excellent pertinence and compatibility to the waste materials of urban architecture excavation; after the rock-soil solidifying agent is applied to road construction, the rock-soil solidifying agent is capable of functioning in enhancing together with urban architecture excavation, silicon dioxide and cement; the rock-soil solidifying agent is capable of penetrating to form a pavement high in strength and durability; as a result, the waste resources are effectively utilized and the road building cost is effectively reduced.

The invention relates to a new method for old road reconstruction by recycling waste materials. The method comprises the processes of: first, treating an old road surface, and in the event of a cement road surface, using equipment to dig out a concrete base layer and breaking it for stand-by use, conducting an indoor test to obtain an optimal mix proportion, according to designed strength, compactness, the optimal mix proportion of test and an optimal moisture content, subjecting LF-S1 and LF-S2 soil solidifying agents, cement and water to smashing stirring till the compactness by recycling equipment, before the last three times of rolling compaction, laying two centimeters of gravel, then performing rolling compaction for three times or paving an asphalt wearing layer, using water to dilute a soil solidification solution in a ratio of 1:200 and carrying out maintenance with the obtained solution, and then paving a colored asphalt surface layer or colored gravel, with old road bed soil, the cement, the liquid soil solidifying agent (L1f-S2) and the powder soil solidifying agent (LF-S3) being in a proportion of, for per cube of compaction: 90-93%:5-8%:0.7kg:5-7%kg. Old road reconstruction by the method provided in the invention can have greatly reduced cost and reduced waste, thus the method is environment-friendly.

The invention discloses soil stabilizer, which consists of industrial waste and chemical reagent, wherein the industrial waste consists of ground steel slag, coal gangue powder after being spontaneously-combusted, grain slag or furnace slag, the chemical reagent consists of calcium oxide, powder grinding aid and sodium sulfate, wherein the mass ratio of the industrial waste and the chemical reagent is 7: 3, and the fineness of the stabilizer powder is brinell specific surface area 500 to 900 m<2>/kg. The soil stabilizer has beneficial effects that mixture of the industrial waste is adopted as raw materials, so that the environmental pollution caused by the industrial waste can be solved; the original chemical activity of the mixture is used for rapidly condensing and solidifying the soil and sand, and no other surface active agent and alkaline excitant is needed, so that the cost is remarkably reduced, simultaneously the construction speed is fast, and the delivery period can be shortened; and the soil stabilizer is widely applied to the dam crest solidification and slope protection of foundation layers of road engineering and hydraulic engineering and is free from being restricted by any environment.

The invention relates to a curing agent, in particular to a silt compounded curing agent which is prepared from the following components in parts by mass: 20-50 parts of an inorganic material adhesive, 2-5 parts of an activator and 2-10 parts of an organic matter surfactant. The silt compounded curing agent is mainly acted on silt, can replace the traditional construction process of vacuum preloading, rockery skin changing and filling and dynamic compaction and can be used for foundation treatment of expressways, municipal roads, storage yards and various building places.

The invention discloses aeolian sand cement stabilized graded broken stone. The aeolian sand cement stabilized graded broken stone comprises the following raw materials by mass percent: 4.2-5.2% of cement, 4.6-6.6% of water, and the balance of aeolian sand graded broken stone; the aeolian sand graded broken stone comprises the following raw materials by mass ratio, and the ratio of the aeolian sand to the stone chips to the broken stone is equal to (8-13):(17-26):(66-70). According to the aeolian sand cement stabilized graded broken stone, the capital input of the highway projects is relatively low, the cost of the raw materials for building the road is low, and the flexural-tensile strength and the crack resistant property of the cement stabilized graded broken stone are improved.

The invention belongs to the technical field of municipal sludge treatment, and particularly discloses road building slag taking municipal sludge as a raw material, a preparation method and application thereof. According to the invention, microorganisms subjected to enrichment culture are added into municipal sludge, and active thalli in the sludge are completely replaced by the microorganisms through a biological extraction reaction; the extraction microorganisms are mainly autotrophic bacteria, the sludge is mainly heterotrophic bacteria, the oxidation and acidification effects of the flora are utilized to condition the sludge, and the water content is reduced to the sludge treatment requirement after mechanical dehydration; and the slag is prepared by means of drying, calcining and the like and is used as a road building material, so that an efficient and economic new way is opened up for reduction, harmlessness and resourceful treatment of the municipal sludge and development of cheap road building materials.

The invention discloses a loader for road construction or road construction maintenance. One ends of fixing plates are welded on the left and right sides of a front wheel frame of the loader, the other ends of the fixing plates are processed with positioning holes and are connected with rotating arms of rubber wheel fixing frames through pin shafts; rubber wheel sprockets are symmetrically arranged on the left and right sides below the rubber wheel fixing frame and are connected with a central sprocket of the front wheel of the loader through a chain; the fixing plates welded on the left and right sides of the loader are provided with rotating grooves for placing rubber wheels or rotating shafts for lifting steel wheels and are fixed by locking hooks; saddle fixing plates are welded on theleft and right sides of the swing support plate of the rear wheel of the loader; the tail ends of lifting hydraulic cylinders are fixed on the saddle fixing plates; positioning cylinders are arrangedbehind the positioning plates; steel wheel sprockets are arranged on the left and right under the steel wheel fixing frame and are connected with the rear wheel of the loader through chains; and icebreakers are fastened on the wheel surfaces of the steel wheels through screws. The existing loader can be used for rolling rubber wheels and steel wheels on the road surface, so the loader has multiple functions and reduces the road construction cost.