146 results about "Swelling soils" patented technology

The invention discloses a device and method for measuring swelling representation parameters of swelling soil. The device for measuring the swelling representation parameters of the swelling soil comprises a sample container, a soil body permeation coefficient measurement part, a jacking cylinder applying a vertical load, a dial indicator for testing a swelling soil sample to generate vertical deformation, and a deformation pipe used for testing water seepage coefficients of the swelling soil. The method comprises the steps of: immersing the swelling soil sample into water for swelling stably, measuring the water seepage coefficients; and then electrically heating the swelling soil sample to ensure that the swelling soil sample is dehydrated and contracted stably, and measuring the permeation coefficients of the swelling soil. Therefore, the invention can be used for measuring water seepage and permeation coefficients of the swelling soil in a repeatedly-swelling deformation process by controlling temperature and water content changes of the swelling soil sample in the sample container so as to reflect the change of a fracture and a soil body structure inside the soil body of the swelling soil in the repeatedly-swelling deformation process. In addition, the sample container of the device is connected with an external pipeline through each joint arranged on the sample container, therefore, data measurement in an experiment process is facilitated, and measurement precision of data is increased.

The invention discloses a preparation method and application of pseudomonas chlororaphis for resisting disease and promoting growth. A strain is pseudomonas chlororaphis HT66CCTCC No:M2013467. A main metabolite of the strain comprises phenazine-1-phenazine and phenazine-1 formamide. The strain is inoculated into a microorganism culture medium and is fermented to obtain a thallus with high concentration and the metabolite, and can be mixed with materials like powder active carbon, bentonite, swell soil, kaolin, diatomite, zeolite, calcium carbonate and the like to prepare a microbial agent; the quantity of viable organisms in a finished product is 1-8.5*10<9>cfu/mL. The tablet laboratory verifies that the pseudomonas chlororaphis has good control effect of pathogenic bacteria of rice sheath blight diseases, cotton fusarium wilt, gaeumannomyces graminis and watermelon fusarium wilt, and also has a good promotion function in the growth of a part of plants.

The invention discloses an environment-friendly slow-releasing long-standing compound fertilizer which belongs to polyelement compound fertilizer and a production method thereof. The fertilizer comprises the following raw material ingredient (by parts by weight): 10-40 parts of powdered rock phosphate, 10-40 parts of potassium feldspar, 15-40 parts of coal gangue, 10-20 parts of magnesite powder, 10-30 parts of nitrogenous fertilizer, 8-18 parts of swell soil, 1-3 parts of kieselguhr and 0.3-1 part of trace element; the powdered rock phosphate, the coal gangue and proper amount of coke are roasted for 8-16 hours at 500-800 DEG C, cooled, crushes and screened by a 60-mesh sieve. The invention provides an environment-friendly energy-saving fertilizer capable of improving soil with comprehensive effective fertilizer composition, slow releasing and high fertilizer utilization ratio. Meanwhile, the environment-friendly slow-releasing long-standing compound fertilizer is suitable for various soils and growth of various crops and the preparation method thereof is provided. The problems of low fertilizer utilization ratio, environment pollution, hardening soil, high production cost and the like in the prior art are solved.

The invention relates to a crack resistant lacquer putty powder and a manufacturing technique thereof. The invention is characterized in that the crack resistant lacquer putty powder is prepared by the raw materials with the weight percentage: 30-50% of ground calcium carbonate, 5-10% of precipitated calcium carbonate, 20-35% of quartz sand, 20-30% of white cement, 0.5-1% of methyl cellulose, 1-3% of swell soil, 0.5-1% of titanium pigment, 0.5-1% of rubber powder and 0.5-1.5% of vegetable fiber. The manufacturing technique is completed according to the steps: the ground calcium carbonate is ground and processed, the quartz sand is screened, and then the vegetable fiber is processed; the raw materials are put into an agitating tank to be stirred and mixed, and the mixed powder material is filled into bags after being exhausted. The invention has the characteristics of high strength, good water resisting property, non-toxicity, odourlessness, yellowing resistance and the like; as being prepared by water, the crack resistant lacquer putty powder is easy to construct and leveled by sand; under the condition of large humidity and temperature difference change, the constructed wall does not craze and fall off, has no phenomenon of sand buckle, and is long in service life.

The invention relates to reinforcing filler used for a rubber latex product, a preparation method thereof and application thereof. The reinforcing filler consists of the following components in part by weight: 50 to 80 parts of base material, 0.01 to 0.4 part of dispersant, 0.001 to 0.5 part of surface treating agent, 0.01 to 1 part of emulsion and 20 to 50 parts of water, wherein the base material is any one of heavy calcium carbonate powder, kaolin powder and argil powder; the dispersant is any one of casein, methylene dinaphthalene sodium sulfonate, sodium polyacrylate, potassium hydroxide and ammonia water; the surface treating agent is any one of bentonite, cellulose, swelling soil and attapulgite; and the emulsion is any one of mineral oil, vaseline, liquid paraffin and polyoxychloroethylene wax. The reinforcing filler has economic formulation and good reinforcing effect. The preparation method is a conventional stirring and grinding method. The process is simple, and little equipment is used. The application comprises the following steps: adding the reinforcing filler into rubber latex, blending the mixture evenly, forming a layer of film on a die by adopting a soaking and casting method, and then drying the film for 15 to 30 minutes at a temperature of between 110 and 130 DEG C to obtain the reinforced filled rubber latex product. The reinforcing filler is favorable for improving the tensile strength of the rubber latex product and reducing the usage amount of the latex.

The invention discloses a swelling soil humidifying and swelling numerical simulation method under the rainfall infiltration condition. The swelling soil humidifying and swelling numerical simulation method comprises the following steps: adopting a fluid-solid coupling module and compiling a relevant FISH language program, and realizing the relation of change of the non-saturated region matrix suction, the non-saturated permeability coefficient and the soil strength parameter along with the moisture content in the unsaturated seepage process; then based on the 'humidity stress field theory', according to the similarity of a seepage continuity differential equation and a heat conduction equation, deducing the equivalent conversion relation of a thermodynamic parameter and a seepage parameter, and adopting a thermodynamic module to realize swelling soil swelling deformation process under the humidifying condition. According to the swelling soil humidifying and swelling numerical simulation method, the swelling soil humidifying and swelling whole-process numerical calculation under the rainfall infiltration condition can be effectively and comprehensively realized, so that effective scientific guidance means are provided for engineering design and construction in the high-risk area of the swelling soil engineering disaster, and meanwhile application of the computational soil mechanics to the technical fields of practical engineering construction, geological disaster prevention and control, and the like, is powerfully driven.

This invention deals with a device and a method for an improved concrete pile casting in swelling soils by substantially lowering or eliminating heave forces created in active soils from affecting said piles by surrounding selectable parts of the pile by an easily deformable material for lowering the horizontal and the vertical soil movement effect, and by providing a low friction surface for further lowering vertical forces effect. This inventive device and method further facilitates subsequent operations by permitting an easy and seamless casting of columns and by ensuring a clean and smooth pile surface for a better adhesion of new concrete to an old one, as well as preventing cement dough seepage to surrounding soil and concrete segregation.

The invention relates to a method for treating a foundation in a swelling soil area using a geotextile bag. The method comprises the following steps: the swelling soil excavated at an engineering site is directly put into the geotextile bag of which the material and size are strictly controlled, and then the geotextile bag is stacked at the engineering site according to a certain arrangement mode, and the geotextile bag filled with the swelling soil is compacted by layers through adopting rolling equipment to form the foundation of a building. The functional principle of the method is as follows: in the process of uploading pressure and soaking expansion operation, the perimeter of the geotextile bag is elongated, thereby a tension is generated in the geotextile bag; on one hand the tension restricts the swelling deformation of the swelling soil, on the other hand the tension is equivalent to an added cohesion generated in the swelling soil, thereby the overall strength of the swelling soil packed in bag is improved. Treating the swelling soil foundation by the geotextile bag is green and environmental protecting, and the construction is simple, and the benefit is significant.

The invention provides a test method and device for measuring swelling-shrinking deformation in a dry-wet cycle of a soil sample. The device comprises a test mold, a sample ring arranged in the test mold and used for carrying the soil sample for measurement of the swelling-shrinking deformation in the dry-wet cycle, upper permeable stone arranged above the sample ring and used for injecting water into the soil sample for a soil sample swelling test, lower permeable stone arranged below the sample ring and used for discharging redundant water injected into the soil sample, a heating component arranged on the periphery of the test mold and used for heating the swelling soil sample obtained after the swelling test to make the swelling soil sample dried and lose water for a soil sample shrinking test, and a measuring component arranged above the upper permeable stone and used for measuring the swelling deformation of the soil sample subjected to water injection through the upper permeable stone and/or measuring the shrinking deformation of the swelling soil sample heated by the heating component. By the adoption of the device, the water absorbing swelling property and water losing shrinking property of the soil sample can be evaluated more precisely.

The invention discloses a swelling soil side expansive force comprehensive testing device which comprises a model box for containing swelling soil, a retaining component is arranged in the model box, one side of the retaining component hangs in the air, the other side of the retaining component is in contact with the swelling soil, a plurality of first pressure detection components which are arranged on the positions of different depths respectively and used for measuring side swelling force of the swelling soil are arranged on the wall of the model box, a plurality of second pressure detection components which are arranged on the positions of different depths respectively and used for measuring the side swelling force of the swelling soil are arranged on the retaining components, and a plurality of humidity detection components which are arranged on the positions of the different depths respectively are arranged in the swelling soil. The comprehensive testing device can simulate and measure side swelling force, acting on different retaining structures, of the swelling soil under the environments of the different kinds of humidity and different depths, and the swelling force test bases are provided for design of the retaining structures in a swelling soil area.

The invention provides a process for preparing a water retention agent of fulvic acid. The process adopts acrylic acid / acrylamide, and inorganic mineral raw materials (such as attapulgite, swell soil, white sericite, kaolin and the like) as host crystals, uses aqueous solution of N, N-methylene-bisacrylamide as a cross linker, simultaneously is added with fulvic acid to be polymerized and prepared in aqueous phase condition. The invention adopts 1-10% of aqueous solution of N, N-methylene-bisacrylamide with low degree of cross linking as cross linker to be polymerized and prepared, has low consistency, is capable of directly spraying, and is convenient in use. owing to adding inorganic mineral raw materials of attapulgite and the like, the invention not only keeps the moisture retention of the water retention agent of the prior art, but also greatly reduces production costs, and owing to adding biochemistry fulvic acid, products are provided with biological nutrition and high fertilizer effect.

The invention discloses a method for determining minimum replacement thicknesses of ballastless track swelling soil cuttings and low-embankment bases, and aims at reasonably determining the minimum replacement thicknesses of ballastless track swelling soil cuttings and low-embankment bases, and providing theoretical calculation support for digging and replacement of bases in swelling soil areas. The method comprises the following steps of: determining allowed hump deformation amounts (as shown in the specification) of the top surfaces of surface layers of a swelling soil cutting and a low-embankment subgrade; through taking the hump deformation amounts (as shown in the specification) of the top surfaces of the surface layers of the cutting and the low-embankment subgrade as control targets, calculating hump deformation amounts (as shown in the specification) of the top surfaces of surface layers of subgrades on base replacement bodies with different thicknesses H through the following formula (as shown in the specification); and determining the minimum replacement thicknesses Hmin of the ballastless track swelling soil cutting and the low-embankment base according to the hump deformation amount calculation results and a condition (as shown in the specification).

The invention discloses a foundation pit support and construction method for a cement mixing pile inserted with a Y type pile, which is characterized by comprising the following construction steps of: (1) excavating a groove; (2) enabling the cement mixing pile to be in position; (3) constructing the cement mixing pile, wherein the lifting speed of a stirrer is 0.8-1m/min, and the pressure of a guniting pump is controlled at 0.4-0.6MPa; for sandy siltseam soil, firstly, pressing swelling soil slurry prepared according to a certain proportion, and then, jetting cement slurry; (4) inserting a Y type precast pile, wherein the construction on the Y type precast pile inserted into the mixing pile needs to be completed in 4h after the mixing pile is formed; (5) manufacturing a circuit purlin; and (6) constructing steel bracings, connecting the bracings to the circuit purlin at the pit edge, and applying prestress for fixing, wherein when the distance between the steel bracings is longer than 20m, adjustable devices except splay bracings are adopted at the prestress applying end. The invention has the characteristics of water and soil blocking, simple processes, convenient operation, short construction cycle, stronger anti-leakage capacity, reduction of construction cost and the like, and is suitable for various soil layers.

The invention relates to inorganic heat insulating mortar used by light-weight heat insulating brick masonry and a preparation method thereof, wherein, the inorganic heat insulating mortar has the raw material compositions and weight contents of 10-30 parts of fly ash, 15-35 parts of vitreous microballon, 1-8 parts of swell soil, 1-10 parts of lime, 250-400 parts of sand and 100 parts of cement. The preparation method comprises the following steps of: uniformly mixing the fly ash, the sand, the swell soil, the hydrated lime and the cement through a machine, adding the vitreous microballon, uniformly mixing through the machine once again and packing by fixed amount. The inorganic heat insulating mortar has the advantages of high strength, low thermal conductivity and good workability, which can avoid the problems of cracking and 'heat bridge' of the masonry body caused by the use of common masonry mortar when being matched with light-weight heat insulating bricks.

The invention discloses a survey humidification compaction test method for determining swelling soil embankment filling and compaction parameters, which specifically comprises the following steps of: 1) drilling holes for a survey to obtain the single-hole natural optimum water content of swelling soil; 2) calculating to obtain natural optimum water content; 3) obtaining maximum dry density through a standard heavy-duty compaction test method; 4) judging the nature of filler for road use; and 5) taking the optimum natural water content plus or minus 2 percent as compaction control water content for medium and weak swelling soil filler embankment filling compaction, and using the maximum dry density determined in the step 3 to calculate degree of compaction as a basis for compaction control dry density. By adopting a geological assimilating method, the natural water content corresponding to a soil body with maximum dry density in a natural swelling soil slope is taken as the optimum water content for swelling soil embankment filling compaction. Moreover, a corresponding natural soil body is used for conducting a standard compaction test and the dry density obtained through the compaction test is taken as the maximum dry density for swelling soil embankment filling compaction.

Presently, research on swelling soil curing agent is still immature and economical special curing agent having high performance is lacking. The invention provides a method, which takes industrial waste carbide slag as a raw material, of improving swelling soil roadbed filling material by using waste carbide slag. In the method, carbide slag is used as the curing agent for improving the swelling soil roadbed. The method includes the steps of adding carbide slag into the swelling soil and stirring uniformly. The water content in the process of adding the carbide slag into the swelling soil should be controlled in the range of 18 to 20 percents and the mass ratio of the dry carbide slag and the dry swelling soil is 6-10 to 100. By the invention, not only the cost of the curing agent is reduced and remarkable curing effect is achieved, but also the industrial waste carbide slag can be recycled, thereby playing a part in comprehensive utilization and environment protection.

The invention relates to a material for regulating and improving the soil structure, soil compactness, and soil chemical properties and physical properties of a swelling soil roadbed. The technical scheme is that: a swelling soil stabilizer comprising a main component of dodecylbenzene sulfonic acid and a swelling soil firming agent comprising a main component of polyvinyl alcohol are combined to improve the chemical and physical properties of swelling soil. The swelling soil stabilizer regulates the components and molecular structure of the swelling soil so as to improve the structure, compactness and expansion and shrinkage performance of the swelling soil, and recombine the structure of the swelling soil; the firming agent is used to firm swelling-shrinking soil, reduce the swelling ratio, improve bearing capacity and reduce construction cost so as to reasonably use human, financial and material resources, and the aim that civil engineering including road engineering is durable is fulfilled; and after being rolled, the soil can be compressed to achieve high compactness, reduce an osmotic coefficient and improve soil consolidation capacity, so that the damage of water to the roadbed is reduced and the frost boiling phenomenon of the roadbed is effectively prevented.

This invention discloses a new technique for securing landslip with swelled soil. Rhombus continuous sash slots of 2-4 meters depth, 2-10 meters elngth, 0.2-0.5 meter width is dign on side slpe of original swelled clay, ram enlarge pile hole is drilled on each rhombus sash acme. Reinforcement cage and reinforcing mat is set in the slot and then concrete is placed to form reinforced concrete continuous rhombus sash board. slope swelled soil that embraced by sash board is irrigating water, and then slope is sealed by concrete or other impermeable material when swelled soil sopping is on biggest saturation. Reinforced concrete continuous rhombus sash net style complex slope protection is used in this invention, and swelling property of swelled soil is transformed into internal stress of complex slope protection to ensure side slope secular stability. Engineering measures is simple, fabrication cost is lost, and technique economic benefit is good.

The present invention relates to composite aluminium-magnesium silicate heat-insulating material, which comprises the following compounds by weight: 20 to 40 portions of swell soil,15 to 40 portions of concave-convex rod, 10 to 40 portions of sepiolite, 1 to 3 portions of titania, 500 to 800 portions of water, 30 to 50 portions of brucite, 1 to 3 portions of ceramic fiber,2 to 5 portions of aluminum dihydrogen phosphate, 8 to 15 portions of succinic acid sodium sulfoacid, 4 to 8 portions of sodium silicate,1 to 3 portions of polyvinyl alcohol, 1 to 4 portions of carboxymethyl cellulose and 10 to 15 portions of perlite. The present invention overcomes the weakness that the prior heat-insulating material has low heat conductivity coefficient. The composite aluminium-magnesium silicate heat-insulating material of the present invention is inorganic heat-insulating material, which has the combustion-free and environmentally friendly performances, good heat preservation performance, simple production craftwork and scientific and reasonable formulation of the compounds. The present invention simultaneously discloses a process for producing the composite aluminium-magnesium silicate heat-insulating material.

The invention discloses a method for modifying swelling soil through iron tailing fine sand and a construction method thereof. The method for modifying swelling soil through iron tailing fine sand comprises uniformly mixing iron tailing fine sand and swelling soil to be modified according to a formula to obtain mixed soil, determining the optimal moisture content of the mixed soil through a heavy compaction test, making the moisture content of the mixed soil be the optimum through humidifying or drying, and closing the mixed soil to obtain the iron tailing fine sand modified swelling soil. The method for modifying swelling soil through iron tailing fine sand can effectively raise the strength of the swelling soil, the problem that deformation of filling material of swelling soil may damage the swelling soil can be solved. The modified soil can used as filling material used in buildings, railways, roads, airports, water conservancy engineering and the like in swelling soil areas, so the method is significant in economic benefit and engineering construction.

The invention relates to an inorganic composite material of catalytic degradation surface active agent waste water, which is characterized by comprising the following materials in percentage by weight: 5-15 percent of limestone, 30-50 percent of diatomite, 30-50 percent of swell soil, 5-20 percent of expansion graphite and 5-25 percent of sodium cellulose glycolate (CMC-Na). The preparation method comprises the following steps of: mixing and pelleting the materials; obtaining a base body by calcining the materials at the temperature of 400 DEG C-900 DEG C; compounding TiO2 sol on the surface of the base body; and preparing the inorganic composite material by roasting the base body at the temperature of 400 DEG C-900 DEG C. The preparation method of the inorganic composite material of the catalytic degradation surface active agent waste water has the advantages of simple process, easy obtaining and low cost of the materials; and the inorganic composite material of the catalytic degradation surface active agent waste water has high speed of degradation surface active agent waste water and high degradation rate.