70results about How to "Facilitate mechanized construction" patented technology

The invention relates to light-weight and energy-saving plastering mortar, which is prepared by mixing the following components in part by weight: 30 to 40 parts of ordinary Portland cement, 2 to 4 parts of hydrated lime, 10 to 20 parts of light aggregate, 40 to 50 parts of heavy aggregate and 1.0 part of compound aid, wherein the light aggregate is an inorganic vitrified hollow microporous material of which the fineness is below 100 meshes; and the heavy aggregate is aeolian sand. During construction, the light-weight and energy-saving plastering mortar is diluted by water added in an amountwhich is 30 to 50 percent based on the weight of the light-weight and energy-saving plastering mortar, and is stirred and mixed mechanically or manually and uniformly until the plastering mortar has the suitable viscosity, and then mechanical spraying or manual construction Is performed. According to the concept of light weight and eco-environmental protection, the light-weight and energy-saving plastering mortar is made light by adopting the inorganic vitrified hollow microporous material, and is matched with the primary elastic modulus of a light-weight wall body to reduce coefficients of heat conductivity and reduce the thermal bridge effect, so the light-weight and energy-saving plastering mortar prevents hollowing, cracking and shedding, insulates heat and reduces noise, and is favorable for mechanized construction. The aeolian sand is used as aggregates, so the plastering mortar has excellent grading distribution and has the prominent three-dimensional texture; and the special compound aid is adopted to improve the peaceability of the mortar to achieve the excellent construction effect.

The invention discloses a wall building material, comprising the following components in parts by weight: 50-80 parts of ceramic polishing residue, 0-30 parts of feldspar, 2-10 parts of calcined soapstone, 10-20 parts of red mud, 0-10 parts of lithium feldspar, 0-15 parts of dickite, 0.5-2 parts of silicon carbide, 1.5-3 parts of stabilizer and 40-50 parts of water. The invention also provides a preparation method of the wall building material. The method comprises the following steps: ball-milling, drying, loading into a cellar, sintering and cutting. The wall building material disclosed by the invention is light in dead load, good in anti-seismic effect, high in thermal insulation properties and good in sound insulation.

The invention discloses inner wall decoration mortar, which is mixed by the following components in part by weight: 8 to 15 parts of common silicate cement, 3 to 4 parts of slaked lime, 3 to 5 parts of light aggregate, 4 to 6 parts of negative ion aid, 70 to 80 parts of heavyweight aggregate (wind-carried sand) and 1.0 part of composite aid, wherein the light aggregate is an inorganic vitrified hollow cellular material with thickness of lower than 100 meshes. The decoration mortar is environment-friendly, natural, long-acting and stable, has the advantages of prominent three-dimensional texture, good decoration effect, good grain composition, small heat conducting coefficient and reduced heat bridge effect, effectively prevents the inner wall from cracking, hollowing and dropping, and is favorable for mechanized construction; and the decoration mortar can eliminate indoor unclean and harmful substances, purify the air, continuously keep the indoor air fresh and promote human health bycontinuously generating negative ions. The inner wall decoration mortar is diluted by water in an amount which is 30 to 50 percent of the weight of the mortar and then is mechanically coated or manually constructed.

The invention discloses a barite anti-radiation pumping concrete. The mixing ratio of the concrete according to the weight part is: cement: water: barite powder: barite sand: barite: synergist: admixture = [340 ~450]: [110~170]: [75~150]: [1000~1400]: [1800~2000]: [2~4]: [7~19]. Through the selection of raw materials and the design of the ratio, a radiation-resistant concrete with high density and good fluidity that can be used for pumping is obtained.

The invention relates to the technical field of railway tunnel construction, specifically a digging method of IV and V-class surrounding rock railway tunnel with large cross section, aiming to solve the problems of the existing railway tunnel digging method including narrow operation space, low work efficiency, inflexible construction method, instable construction progress, high deformation potential of surrounding rock, and inconvenient operation. The method comprises performing leading support, digging arc-shaped pilot tunnel and preserving core soil; staggeredly digging left / right side walls of middle sidestep and preserving core soil; staggeredly digging left / right side walls of lower sidestep and preserving core soil; sequentially digging upper, middle and lower sidesteps and preserving core soil; and digging inverted arch and carrying out preliminary support. The invention has large construction space and high work efficiency, and can perform multi-job parallel operation. When the geologic conditions are changed, the invention can be flexibly and timely converted to other construction method. Preservation of core soil and left / right staggeredly digging are helpful to the stability of the digging working face. When the surrounding rock has large deformation, the invention can adjust closure time as soon as possible under the prerequisite of assuring safety and meeting requirements of clearance cross section.

The invention relates to a light-weight indoor floor leveling mortar, which comprises the following components in proportion by weight: 30-35 ordinary portland cement, 4-5 hydrated lime, 5-8 light aggregate, 55-60 heavy aggregate (ordinary river sand) and 1.0 compound additive, wherein the light aggregate is an inorganic vitrified hollow cellular material of which the fineness is lower than 100 meshes; and the compound additive can be prepared by mixing 0.1 part by weight of dispersible latex powder, 0.3 part by weight of cellulose ether, 0.5 part by weight of water reducing agent and 0.1 part by weight of coagulant agent. The construction method comprises the following steps: watering the mortar with water which is 30-50% of the mortar in weight, mechanically or manually mixing until themortar and water are evenly mixed and achieve the viscosity, and carrying out mechanical spray coating or manual construction. The mortar of the invention has light weight, self-leveling performance,good smoothness, easy toweling, rapid construction, simple and practical process, low cost of unit area and popularization value, is favorable to mechanized construction, lightens the load quantity of a building body, improves the safety earthquake-resistant performance of the construction, achieves leveling thickness rapidly once, and is very suitable for leveling the floor of the bottom surfaceof a light weight floor material, such as a wood floor and the like.