Abrégé

A method for rapid demolishing of a cement concrete pavement slab and a device there for. The device includes a demolishing vehicle, and the demolishing vehicle includes a base disposed at a bottom of the demolishing vehicle. The first shallow cutting allows first saws to make a minimal cut into the cement concrete pavement, increasing the cutting speed. A second deeper cutting is made on the basis of the grooves cut by the first saws, and although second saws have a larger feed, a cutting thickness of the cement concrete pavement is reduced by the first saws. A third cutting follows the same principle as the previous cuttings.

Classes IPC  ?

• E01C 23/09 - Dispositifs ou aménagements pour travailler la surface terminéeDispositifs pour réparer la surface des revêtements endommagés pour former des gorges, des rainures ou des évidements, p. ex. pour former des joints ou des sillons pour le marquage, pour le découpage des sections à retirerDispositifs ou aménagements pour travailler la surface terminéeDispositifs pour réparer la surface des revêtements endommagés pour nettoyer, traiter ou remplir des sillons, rainures, évidements ou fissuresDispositifs ou aménagements pour travailler la surface terminéeDispositifs pour réparer la surface des revêtements endommagés pour rogner les bords du revêtement

Abrégé

A method for evaluating the service performance of transportation infrastructure health monitoring systems and a device therefor. The method includes: placing the provided external incentive within the road section monitored by the transportation infrastructure health monitoring system to be evaluated; obtaining feedback data corresponding to the external incentive acting within the road section through the standard sensor; constructing a predictive response model of the feedback data within the road section, and combining the predictive response model with the feedback data to obtain predicted data; obtaining measured data through the transportation infrastructure health monitoring system to be evaluated; conducting an evaluation and a calibration on service performance of the transportation infrastructure health monitoring system to be evaluated based on the predicted data and the measured data. It achieves the effectiveness evaluation of transportation infrastructure monitoring systems and reduces the demand for human and material resources during evaluation process.

Classes IPC  ?

• G01M 5/00 - Examen de l'élasticité des structures ou ouvrages, p. ex. fléchissement de ponts ou d'ailes d'avions

Abrégé

The present disclosure relates to the technical field of tunnel construction, in particular to a design method of a buffer layer with critical deformation of a tunnel initial support as a control target. The method includes the following steps: (1) establishing a mechanical model and calculating an ultimate bearing capacity of the tunnel initial support during critical damage based on a cusp catastrophe theory; (2) determining a critical deformation value of the tunnel initial support under the ultimate bearing capacity; (3) establishing a yielding control target of a tunnel buffer layer; (4) determining a performance index of the buffer layer according to the control target, and calculating corresponding index parameters. Compared with the prior art, the method has the following beneficial effects. The method aims to put forward the critical deformation value of the tunnel initial support under the ultimate bearing capacity, obtain an optimal yielding design parameters of the buffer layer by taking a compression and load transfer mode of the tunnel buffer layer as a link, and give a calculation method.

Classes IPC  ?

• E21D 9/14 - Tracé des tunnels ou des galeriesParticularités de construction des tunnels ou des galeries, non prévues ailleurs, p. ex. têtes, atténuation de la lumière du jour aux entrées de tunnels
• G06F 30/20 - Optimisation, vérification ou simulation de l’objet conçu

Abrégé

A method for evaluating a probability of road collapse is provided, which includes: collecting road data information of the road to be analyzed, and obtaining road soil layer information and underground pipeline information respectively through the road data information; determining road soil layer deterioration factors based on the road soil layer information; constructing a deterioration factor influence intensity model combined with the road soil layer information to obtain the probability of the influence of the road soil layer deterioration factors; constructing an underground pipeline deterioration influence intensity model combined with the underground pipeline information to obtain the probability of the underground pipeline deterioration influence; summarizing the probability of the influence of the road soil layer deterioration factors and the probability of the underground pipeline deterioration influence, and then evaluating the probability of road collapse, improving the scientific nature and accuracy of the road collapse assessment process.

Classes IPC  ?

• G01V 20/00 - Géomodélisation en général

Abrégé

Provided is a perception evaluation method for a bearing capacity of a highway tunnel lining structure, including: from the load effect evolution state of surrounding rock and the decay mechanical state of a lining structure, the characterization index system of a highway tunnel bearing capacity is constructed; a characterization index inversion function relationship based on strain data of an inner surface of the highway tunnel lining is provided, a bearing capacity perception layout scheme of the tunnel structure is constructed accordingly, and a complete set of perception method for bearing capacity characterization indexes is obtained; then, by calculating a load effect function and a resistance effect function, the calculation and evaluation method of the tunnel structure bearing capacity.

Classes IPC  ?

• G01L 5/16 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques pour la mesure de plusieurs composantes de la force
• E21F 17/18 - Adaptations particulières des dispositifs de signalisation ou d'alarme

Abrégé

The disclosed are a deflection calibration apparatus and method for a laser type high-speed deflection tester. The apparatus comprises rigid supports, rotating discs, driving systems and a deflection calibration unit; the rotating discs are mounted on the rigid supports and driven by the driving systems to rotate, and upper surfaces of the rotating discs are processed into inclined planes having a slope in the circumferential direction; the deflection calibration unit is used for calibrating a laser type high-speed deflection tester according to measured and theoretical deflection values; laser emitted by a Laser-Doppler vibrometer is incident on the upper surfaces of the rotating discs to obtain the measured deflection value; the deflection calibration unit calculates the theoretical deflection value according to the inclination angle and the rotational angular velocity of each rotating disc and the distance between a laser incident point and the gyration center of each rotating disc.

Classes IPC  ?

• G01N 29/30 - Dispositions pour l'étalonnage ou la comparaison, p. ex. avec des objets standard
• G01N 29/24 - Sondes
• G01N 33/38 - BétonChauxMortierPlâtreBriquesProduits céramiquesVerre

Abrégé

A passive excitation-based online calibration method for a bridge structural monitoring system, comprising: taking a dynamic load of a normal passing vehicle of a bridge as a passive excitation source to act on a bridge structure; an RS and an SMS to be calibrated continuously and synchronously acquiring strain data of the bridge structure, and forming measurement data sequences according to time sequencing; calculating an instantaneous measurement error, a period measurement error, and a basic error of the SMS according to the measurement data sequences respectively acquired by the RS and the SMS to be calibrated; and taking the instantaneous measurement error, and/or the period measurement error, and/or the basic error as a calibration basis to perform online calibration on the metrology performance of the SMS.

Classes IPC  ?

• G01M 5/00 - Examen de l'élasticité des structures ou ouvrages, p. ex. fléchissement de ponts ou d'ailes d'avions

Abrégé

A vehicle-road cooperation precise positioning method based on an electrified highway includes measuring position information of its own positioning point by using a roadside positioning module; determining absolute coordinates of all points on a communication line according to the position information; acquiring a contact signal when a vehicle-road connection information system comes into contact with the communication line, and determining position information of a contact point according to the contact signal and the absolute coordinates; and based on a conversion algorithm, determining current vehicle mass center position coordinate information according to the position information of the contact point and parameter information of the vehicle-road connection information system. In the process of real-time acquisition of vehicle dynamic position information, the method does not rely on a satellite positioning system at all and is based on a wired vehicle-road connection of the electrified highway, so that timeliness and reliability are higher.

Classes IPC  ?

• G01C 21/28 - NavigationInstruments de navigation non prévus dans les groupes spécialement adaptés pour la navigation dans un réseau routier avec corrélation de données de plusieurs instruments de navigation
• B60L 5/24 - Pantographes

Abrégé

0 during actual construction.

Classes IPC  ?

• E01C 23/00 - Dispositifs ou dispositions auxiliaires pour la construction, la réparation, la remise en état ou la dépose de routes ou de surfaces similaires
• G01N 25/00 - Recherche ou analyse des matériaux par l'utilisation de moyens thermiques
• E01C 7/18 - Revêtements continus réalisés sur place faits de matériaux d'empierrement et de liants de matériaux d'empierrement et de liant bitumeux
• E01C 23/01 - Dispositifs ou moyens auxiliaires préalables à la mise en place d'un nouveau revêtement ou pour en vérifier la configuration, p. ex. gabarits, supports de guide d'arasementApplications des appareils de mesure, d'indication d'enregistrement de la configuration de surface d'un revêtement existant, p. ex. profilographes
• G01N 33/38 - BétonChauxMortierPlâtreBriquesProduits céramiquesVerre

Abrégé

A temperature monitoring method of a brake of a freight vehicle based on TBOX is provided, including: determining a weight of the freight vehicle based on OBD data of the freight vehicle collected by the TBOX; inputting the weight, the OBD data, a longitudinal slope in a high-precision map to determine the temperature of the brake of the freight vehicle; setting a temperature warning threshold of the brake based on its performance parameters of the freight vehicle, and determining a first driving state and a second driving state in a front road section with the determined temperature of the brake, and generating a warning signal and a forewarning signal of the freight vehicle. The monitoring method improves accuracy of the brake temperature by introducing altitude variation of the front road section and weight of the freight vehicle, and provides powerful data support for a safe driving.

Classes IPC  ?

• B60T 17/22 - Dispositifs pour surveiller ou vérifier les systèmes de freinsDispositifs de signalisation

Abrégé

Disclosed is a method for evaluating environmental erosion of thaumasite in tunnel concrete, including: acquiring natural corrosion action parameters and environmental influence action parameters, and evaluating a natural corrosion situation based on the natural corrosion action parameters to obtain an initial evaluation result; and modifying the initial evaluation result based on the environmental influence action parameters to obtain a target evaluation result.

Classes IPC  ?

• G01N 17/00 - Recherche de la résistance des matériaux aux intempéries, à la corrosion ou à la lumière
• G01N 33/38 - BétonChauxMortierPlâtreBriquesProduits céramiquesVerre
• G01N 33/18 - Eau

Abrégé

The present application discloses a deflection calibration apparatus and method for a laser type high-speed deflection tester. The apparatus comprises rigid supports, rotating discs, driving systems and a deflection calibration unit; the rotating discs are mounted on the rigid supports, the driving systems drive the rotating discs to rotate, and the upper surfaces of the rotating discs are processed into inclined planes having a slope in the circumferential direction; the deflection calibration unit is used for calibrating a laser type high-speed deflection tester according to a measured deflection value and a theoretical deflection value; laser emitted by a laser doppler vibrometer in the laser type high-speed deflection tester is incident on the upper surfaces of the rotating discs, so that the measured deflection value is obtained; and the deflection calibration unit calculates the theoretical deflection value according to the inclination angle and the rotational angular velocity of each rotating disc and the distance between a laser incident point and the gyration center of each rotating disc. According to the present application, lossless calibration of a measurement result of the laser type high-speed deflection tester is realized.

Classes IPC  ?

• E01C 23/01 - Dispositifs ou moyens auxiliaires préalables à la mise en place d'un nouveau revêtement ou pour en vérifier la configuration, p. ex. gabarits, supports de guide d'arasementApplications des appareils de mesure, d'indication d'enregistrement de la configuration de surface d'un revêtement existant, p. ex. profilographes
• G01C 25/00 - Fabrication, étalonnage, nettoyage ou réparation des instruments ou des dispositifs mentionnés dans les autres groupes de la présente sous-classe

Abrégé

A construction method for a karst tunnel crossing over a high-water-level underground river. The method comprises the following steps: 1) excavating a section where a tunnel crosses over an underground river by means of a three-step method; 2) constructing a bridge-shaped water guide structure crossing the tunnel and crossing over the high-water-level underground river; 3) providing a water retaining wall (17) around a water inlet of the water guide structure, blocking a runoff path of the underground river, and introducing water into a water guide pipeline pre-buried in the water retaining wall; and 4) providing a water retaining wall around a water outlet of the water guide structure to ensure that water in an underground river pipeline does not flow back into the tunnel. Further disclosed is a water guide structure for construction of a karst tunnel crossing over a high-water-level underground river. Large-flow underground water of the underground river exposed during tunnel construction is guided downstream of the underground river in a cross-over tunnel clearance manner, such that the tunnel construction can be resumed as soon as possible, an underground water environment is protected, and the cost for pumping out the large-flow underground water is reduced.

Classes IPC  ?

• E21D 9/04 - Creusement de galeries en terrain de faible consistanceDispositifs à cet effet non prévus ailleurs
• E21D 11/10 - Revêtement avec des matériaux de construction avec du béton coulé en placeCoffrage ou autre équipement adapté à cet effet
• E21D 11/15 - Plaques de revêtementGarnissages, c.-à-d. revêtements conçus pour retenir les matériaux de la formation ou pour transmettre la charge aux éléments de support principaux
• E21D 11/38 - Imperméabilisation à l'eauCalorifugeageImperméabilisation acoustiqueIsolation électrique
• E21F 16/02 - Drainage de tunnels
• E21F 17/00 - Procédés ou dispositifs destinés à être utilisés dans les mines ou tunnels, non couverts ailleurs

Abrégé

Disclosed is a sulfate corrosion-resistant concrete, a method for optimizing proportion and application thereof. The concrete is formed by mixing and stirring base stocks, aggregates, admixtures, external additives and water. The base stock of the concrete is 17.4-17.5 parts of Portland cement; the aggregates include 38.9 parts of basalt with aggregate size of 5-10 mm and 33.1-33.2 parts of basalt medium sand; the admixtures are 1.9-1.95 parts of silica fume or fly ash, and further including 0.23-0.24 part of polycarboxylate water reducer and 1.34-1.35 part of sulfate corrosion-resistant liquid preservative. Optimized proportion method: according to the corrosion characteristics of sulfate and corrosion environment parameters, determine the composition and proportion of basic samples and comparison samples, make and cure sample components, test the deep components of the samples, and obtain the optimal composition and proportion according to the test results.

Classes IPC  ?

• C04B 40/00 - Procédés, en général, pour influencer ou modifier les propriétés des compositions pour mortiers, béton ou pierre artificielle, p. ex. leur aptitude à prendre ou à durcir
• C04B 14/14 - Matières d'origine volcanique
• C04B 14/28 - Carbonates de calcium
• C04B 18/08 - Cendres volantes
• C04B 22/14 - Acides ou leurs sels comportant du soufre dans la partie anionique, p. ex. sulfures
• C04B 24/26 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
• C04B 28/04 - Ciments Portland
• G01N 23/20 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou en utilisant la diffraction de la radiation par les matériaux, p. ex. pour rechercher la structure cristallineRecherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou en utilisant la diffusion de la radiation par les matériaux, p. ex. pour rechercher les matériaux non cristallinsRecherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou en utilisant la réflexion de la radiation par les matériaux
• G01N 33/38 - BétonChauxMortierPlâtreBriquesProduits céramiquesVerre
• C04B 103/30 - Réducteurs d'eau, plastifiants, entraîneurs d'air
• C04B 111/20 - Résistance envers les attaques chimiques, physiques ou biologiques

Abrégé

A passive excitation-based online calibration method for a bridge structure strain monitoring system, comprising: taking a dynamic load of a normal passing vehicle of a bridge as a passive excitation source to act on a bridge structure; an RS system and an SMS system to be calibrated continuously and synchronously acquiring strain data of the bridge structure, and forming measurement data sequences according to time sequencing; calculating an instantaneous measurement error, a period measurement error, and a basic error of the SMS system according to the measurement data sequences respectively acquired by the RS system and the SMS system to be calibrated; and taking the instantaneous measurement error, and/or the period measurement error, and/or the basic error as a calibration basis to perform online calibration on the metrology performance of the SMS system.

Classes IPC  ?

• G01B 21/32 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour mesurer la déformation dans un solide

Abrégé

Provided is a method for analyzing the expansive stress and expansive strain of tunnel surrounding rock, including: (1) determining the surrounding rock state of the tunnel surrounding rock before expansion and the surrounding rock state after expansion; (2) according to the determined state of the surrounding rock, determining the expansive stress and expansive strain of the tunnel surrounding rock before expansion, and determining the expansive stress and expansive strain of the tunnel surrounding rock after expansion; (3) according to the surrounding rock state of the tunnel surrounding rock after expansion, determining the expansive deformation radius of the tunnel surrounding rock, so as to determine the expansive deformation displacement of the tunnel surrounding rock.

Classes IPC  ?

• G01D 21/02 - Mesure de plusieurs variables par des moyens non couverts par une seule autre sous-classe
• G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression

Abrégé

A configurable bridge cluster structure monitoring and management apparatus, comprising: a bridge cluster monitoring platform, comprising a bridge cluster configuration module, the bridge cluster configuration module having bridge structure monitoring devices, models, and units that can be selectively invoked; and a bridge structure configuration module, used for generating the bridge structure monitoring devices, models, and units selected from the bridge cluster configuration module into a bridge structure monitoring system. The apparatus has the beneficial effects of being suitable for multiple bridges, dynamic updating of configuration information, and good data compatibility. A configurable bridge cluster structure monitoring and management method, comprising the following steps: setting up bridge structure monitoring devices, models, and units in a configurable architecture; and selecting bridge structure monitoring devices, models, and units to generate a bridge structure monitoring system for each bridge. The method has the beneficial effect of avoiding the problems of each bridge structure monitoring system being developed independently, having incompatible data, and being unable to implement cluster monitoring.

Classes IPC  ?

• G06Q 10/06 - Ressources, gestion de tâches, des ressources humaines ou de projetsPlanification d’entreprise ou d’organisationModélisation d’entreprise ou d’organisation
• G06Q 50/08 - Construction

Abrégé

th cloud device traffic data set. Therefore, the present application can preferentially recall traffic data in the cache cloud that has a batter correspondence to task, a smaller range and even a better data structure, thereby significantly improving the data recalling rate and retrieval response efficiency of cloud devices at the same level and even the entire intelligent cloud traffic control system.

Classes IPC  ?

• G08G 1/01 - Détection du mouvement du trafic pour le comptage ou la commande
• H04L 29/08 - Procédure de commande de la transmission, p.ex. procédure de commande du niveau de la liaison

Abrégé

An anti-rutting pavement structure is arranged consecutively from bottom to top, a semi-rigid base layer, a SBS emulsified asphalt adhesive layer, a Type II latex cement mortar poured asphalt concrete lower layer, a Type I latex cement mortar poured asphalt concrete middle layer and a high viscosity modified asphalt SMA-13 concrete surface layer.

Classes IPC  ?

• E01C 7/32 - Revêtements continus réalisés sur place faits de matériaux d'empierrement et de liants de plusieurs couches différentes réalisées sur place
• E01C 7/26 - Revêtements continus réalisés sur place faits de matériaux d'empierrement et de liants de matériaux d'empierrement et de liant bitumeux mélangés à d'autres matériaux, p. ex. au ciment, au caoutchouc, au cuir, à des fibres
• C04B 14/06 - QuartzSable
• C04B 18/02 - Matières agglomérées
• C04B 40/00 - Procédés, en général, pour influencer ou modifier les propriétés des compositions pour mortiers, béton ou pierre artificielle, p. ex. leur aptitude à prendre ou à durcir
• C04B 24/36 - Produits bitumineux, p. ex. goudron, brai
• C04B 24/26 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone

Abrégé

A rut-resistant road pavement structure comprises the following layers sequentially disposed from bottom to top: a semi-rigid subbase course (1); an SBS modified emulsified asphalt binding layer (2); an asphalt concrete bottom surface course (3) in which a type II latex cement mortar penetrates asphalt; an asphalt concrete middle surface course (4) in which a type I latex cement mortar penetrates asphalt; and a highly viscous SMA-13 modified asphalt concrete top surface course (5). Also disclosed is a pavement method of the rut-resistant road pavement structure. The rut-resistant road pavement structure mitigates the problem in which middle and bottom surface courses of a road pavement having a semi-rigid subbase course contribute greatly to the formation of ruts under a high temperature and a heavy load, and is favorable for preventing formation of cracks, thereby improving overall capabilities of a surface course and a subbase course to resist distortion, shortening construction and maintenance time, and greatly reducing costs.

Classes IPC  ?

• E01C 7/32 - Revêtements continus réalisés sur place faits de matériaux d'empierrement et de liants de plusieurs couches différentes réalisées sur place

Abrégé

Disclosed is a polyurethane prepared by the following method. The method comprises: adding a polymerization inhibitor, catalyst and isocyanate component in a reaction container, adding a polyol to the reactor while stirring at room temperature under nitrogen, increasing the temperature to 50-80˚C, and maintaining the temperature to react for 0.5-6 hours. Further disclosed are a mixture material containing the polyurethane and a polyurethane modified asphalt road surface structure. The synthesis condition of the polyurethane is mild, and a secondary reaction thereof with the air and an active hydrogen component in the asphalt can occur during maintenance and formation to further increase the strength of a mixture material thereof. In addition, the standard Marshall stability at 60˚C thereof meets the petroleum asphalt requirement, such that a service life of the asphalt road surface can be increased.

Classes IPC  ?

• C08G 18/40 - Composés de haut poids moléculaire
• C08G 18/48 - Polyéthers
• C04B 26/16 - Polyuréthanes
• C04B 26/26 - Matières bitumineuses, p. ex. goudron, brai
• C08L 95/00 - Compositions contenant des matières bitumeuses, p. ex. asphalte, goudron ou brai

Abrégé

This present invention discloses a waterborne polymer modified emulsified asphalt mixture and the preparation method thereof, and particularly relates to a waterborne polyurethane emulsified asphalt concrete, a waterborne acrylic resin emulsified asphalt concrete, and a waterborne epoxy resin emulsified asphalt micro-surfacing mixture, and preparation methods thereof. A mixture containing a waterborne polymer modified emulsified asphalt forms a high-performance composite system having a spatial network structure, and has good performance and simple preparation process.

Classes IPC  ?

• C08K 3/36 - Silice
• C08L 95/00 - Compositions contenant des matières bitumeuses, p. ex. asphalte, goudron ou brai
• C08K 3/00 - Emploi de substances inorganiques en tant qu'adjuvants
• C08K 3/34 - Composés contenant du silicium
• C08L 75/04 - Polyuréthanes

Abrégé

Disclosed are a thermosetting modification asphalt mixture additive, a preparation method therefor and an asphalt mixture prepared from the modifier. The thermosetting modification asphalt mixture additive comprises the following raw materials in parts by weight: 35-70 parts of resin, 1-35 parts of a curing agent, 0-2.5 parts of an accelerant, 0-6 parts of a flatting agent, 20-40 parts of fillers and 0-2 parts of an auxiliary agent. The asphalt mixture comprises the following raw materials in parts by weight: 1-5 parts of the thermosetting modification asphalt mixture additive, 2-8 parts of matrix asphalt or modified asphalt and 87-97 parts of mineral aggregates. The thermosetting modification asphalt mixture additive prepared in the present invention adopts a dry-method modification technology, the prepared modifier is powdery, has a small grain diameter and is easy to disperse in the asphalt mixture; the asphalt mixture prepared from the modifier is simple in operation process, can be continuously produced and is low in cost.

Classes IPC  ?

• C08L 63/00 - Compositions contenant des résines époxyCompositions contenant des dérivés des résines époxy
• C08L 95/00 - Compositions contenant des matières bitumeuses, p. ex. asphalte, goudron ou brai
• E01C 7/26 - Revêtements continus réalisés sur place faits de matériaux d'empierrement et de liants de matériaux d'empierrement et de liant bitumeux mélangés à d'autres matériaux, p. ex. au ciment, au caoutchouc, au cuir, à des fibres

Abrégé

An auxiliary component for pavement construction comprises a cylinder (11), a base plate (12) and a leveling bolt (13). The cylinder (11) comprises a first cylinder part (11a) and a second cylinder part (11b) connecting and communicating with each other. The first cylinder part (11a) is provided with a hanger installing part and a slurry inlet. The bottom part of the second cylinder part (11b) is connected with the base plate (12). The base plate (12) is provided with a bolt extending hole (14) and a slurry discharging hole (15) which are communicated with the inner cavity of the second cylinder part (11b). The leveling bolt (13) comprises a bolt head (13a) and a screw (13b). The screw (13b) is arranged through the bolt extending hole (14). The bolt head (13a) is located in the second cylinder part (11b). The diameter of the bolt head (13a) is less than the inner diameter of the second cylinder part (11b). The invention also provides a concrete slab installed with the auxiliary component for pavement construction and a method of pavement construction. The auxiliary component for pavement construction improves leveling efficiency and durability by grouting the hollow area at the bottom of the base plate (12).

Classes IPC  ?

• E01C 19/52 - Appareils pour mettre en place des éléments séparés du revêtement préformés, p. ex. des bordures de trottoir
• E01C 5/06 - Revêtements faits d'éléments préfabriqués faits d'éléments à base de ciment ou de liants analogues