JPH06144910A - Bonding material and its application method - Google Patents

Abstract

PURPOSE:To increase the durability of a pavement material by sprinkling a bonding material obtained by mixing a fiber and a specified ratio of cement with sand as the essential material, filling and uniformly squeezing the material, sprinkling water, curing the material and then sprinkling water to clean the material. CONSTITUTION:A rapid-setting cement by 5-20wt.% of the total bonding material, a fiber such as cellulosic fiber, a thickener and an inorg. pigment are mixed in No.4 to 5 quartz sand to prepare a bonding material. The bonding material is sprinkled over the surface of a pavement material just laid and squeezed into the joint. The bonding material is vibrated and filled into the joint with a compactor. The fact that no more bonding material is filled by vibration is confirmed, and then the worn bonding material remaining on the pavement material surface and that swollen up on the joint are scraped off by a rubber break, etc., water is then sprinkled over the joint at 1.5-2.0l/m the bonding material is cured for 1 to 2hr, and the bonding material remaining on the pavement material surface is sprinkled with water and cleaned with a brush, etc., and a highly durable pavement is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint material used for a pavement material having joints and a method for constructing the joint material.

[0002]

2. Description of the Related Art Conventionally, when laying concrete blocks for paving, concrete flat plates for paving, bricks for paving, paving stones, etc., it has been common to interpose joints to provide a meshing function. Sand and mortar are used. In the case of sand, the construction procedure was to lay pavement material, sweep dry sand with a broom, etc., into joints, and remove excess sand. For mortar, mix with water 1:
2 mortar (the amount of cement is about 70%) was packed in the joint with a trowel.

[0003]

The use of sand as a joint material is not only easy to construct, but also allows the paving materials to have a meshing effect with each other, which is a functional effect of distributing the load. There is. However, in the case of a sand joint, since it does not contain a binder, it flows out by rainwater or the like or is scattered by the wind, and the effect of meshing with the paving materials is reduced. As a result, the bearing capacity of the pavement is lowered, and the pavement surface becomes uneven, resulting in the drawback that the pavement material is damaged. On the other hand, when mortar is used, it requires a specialized engineer for the construction, the construction speed is slow, and the joints are too strong, so that the pavement is cracked due to the deformation of the pavement. The present invention has been made in view of the above circumstances, and run out in rainwater or the like in the case of sand joints, eliminates scattering by wind, and also eliminates the workability of mortar joints and damage to pavement materials, and provides a long-term pavement function. The purpose is to provide a joint material that can be maintained for a long time and a construction method thereof.

[0004]

[Means and Action for Solving the Problems] The joint material of the first invention has a composition in which cement and fibers are added to sand as a main material, and the amount of cement is suppressed to 5 to 20%. This is to prevent the joint from being too strong and losing the effect of absorbing the deformation of the pavement. The first reason for adding fibers to the joint material is to prevent the separation of sand and cement due to the entanglement of fibers, and the second reason is to promote the hydration of cement after water sprinkling due to the water retention effect of the fibers. , To prevent dryout in the summer. Further, after hardening the joint material, it is also aimed at the effect of suppressing the breakage of the joint material such as cracks. Due to the above configuration, when the joint material is filled in the joints of the pavement material and then sprinkled with water, the joint material is hardened uniformly and can be prevented from flowing out by rainwater or scattering by the wind. It is possible to form joints that are not damaged.

The construction method of the second invention comprises a step of filling a joint material in which cement and fibers are added to sand as a main material, a step of spraying the joint material after the joint material is uniformly clogged, and a joint material. And a step of washing with a brush while sprinkling water. With this construction, it is possible to form joints that are efficient and have a good finish easily without requiring any specialized technique.

[0006]

Embodiments will be described below with reference to the drawings. Figure 1
Shows the mixing ratio of the joint material divided into two cases, one used when the temperature is 5 ° C. or higher and the other used when the temperature is 5 ° C. or lower. Silica sand is used as the main material. In this case, silica sand is usually used as No. 4 or a mixture of No. 4 and No. 5, and cement is immediate hardened cement to shorten the curing time. . Cellulose fibers are used as the fibers, but the use of fibers such as carbon fibers does not change the physical properties of the joint material. Furthermore, a thickener is used as an additive and an inorganic pigment having excellent weather resistance is used as a pigment.

The results of the physical property test of the joint material by the mixing ratio shown in FIG. 1 will be described below. When cured at 5 ° C with the compounding ratio of compressive strength No. 1, 10 hours after 6 hours
Kgf / cm ^2, about 24 hours after 20Kgf / cm ² , No. 2
When cured at 25 ° C at a compounding ratio of 10 kgf / after 3 hours
cm ² and 25 Kgf / cm ² after 24 hours, both of which are compressive strength of general mortar joint material 200-300 Kgf / cm
Extremely low strength compared to ² . Further, even if the amount of water sprinkled in the water sprinkling process varies, excess water permeates underground and only a substantially constant amount of water remains in the jointing material, so there is little variation in strength. Curing time This is the time until the joint material is hardened so that the joint material will not be scraped off even if it is washed with a brush, but when cured at 5 ° C at the No. 1 compounding ratio, it will take about 1 hour and 30 minutes, and the No. 2 compounding When cured at a rate of 25 ° C, it took about 1 hour, and neither was related to the watering rate.

[0008] In short, it was confirmed that the jointing material having the above-mentioned mixing ratio can be used throughout the year and can be cleaned with a short curing time. In addition, as a result of conducting a vehicle running experiment with the joint material of the above mixture ratio as the joint of the pavement block and the traffic classification as L traffic, it was confirmed that the joint portion was not destroyed at all and could withstand sharing for a long time. did it. Also, if a pigment is selected according to the color of the pavement material, it will be in harmony with the pavement material in terms of appearance, and a joint line that is more luxurious than sand joints can be created.

FIG. 2 is a process diagram for explaining the construction method,
This will be explained. First, a joint material is sprinkled on the surface of the paving material that has been laid (step A), and the joint material is stuffed into the joint while sweeping the joint material using a broom or a rubber rake (step B). Then, the joint material is sufficiently filled into the joint while applying vibration using a compactor or the like (step C). Next, after confirming that the jointing material will not clog further even if vibration is applied with a compactor, the jointing material remaining on the surface of the pavement in a scraped state using a rubber rake and the joints with raised joints Scrap the material (process D).

The above steps A, B, C and D are the methods generally used in the past, and a series of methods including the following steps E, F and G are the present invention. That is, after the remaining joint material is scraped off, water is sprayed on the joint portion using the Joro (step E). The amount of water sprayed at this time was 1.5 to 2.0 l / m ²
Use the degree as a guide. After watering, the joint material is cured as it is (step F). The curing time in this case is 1 hour in summer and 2 hours in winter as a guide, but if the joint material is not adhered by pressing the joint portion with a finger, the curing is completed. Finally, the joint material remaining on the surface of the pavement material is washed with a brush while watering with a hose or the like, and the construction is completed (step G). According to the above-described embodiment, it is possible to easily and efficiently construct joints with good finish.

[0011]

As described above, according to the present invention, cement and fibers are added to sand as a main material to make a joint material having a cement amount of 5 to 25%, and a sprinkling step and curing at the time of construction. Since the process and the washing process are added, the following effects are achieved. There will be no leakage of joint material due to rainwater or scattering by wind. The interlocking effect between paving materials can be maintained for a long time. It is possible to prevent damage to the pavement material due to the joint material being too strong. As a result, the durability of the pavement is increased. The joint construction can be done easily and efficiently.

[Brief description of drawings]

FIG. 1 is a diagram showing a mixing ratio of joint material by temperature at the time of use.

FIG. 2 is a process drawing showing a joint construction method.

[Explanation of symbols]

 A Joint material spraying process B Joint filling process C Filling process D Scraping process E Sprinkling process F Curing process G Cleaning process

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Internal reference number FI Technical indication C04B 16:02 Z 2102-4G 14:38) A 2102-4G (72) Inventor Shigeo Suda Saitama 2-1-1 Tsukimi-cho, Kumagaya-shi Chichibu Cement Co., Ltd. Central Research Institute (72) Inventor Minoru Hata 2-1-1 Tsukimi-cho, Kumagaya-shi, Saitama Chichibu Cement Co., Ltd. Central Research Institute (72) Inventor Akihiko Karasawa 2-1-1 Tsukimi-cho, Kumagaya-shi, Saitama Chichibu Cement Co., Ltd. Central Research Laboratory (72) Inventor Hideyuki Munakata 1-28-23 Hongo, Bunkyo-ku, Tokyo Yuchicho Chichibu Building (72) Inventor Koji Yaginuma 1-28-23 Hongo, Bunkyo-ku, Tokyo Inside Yumicho Chichibu Building ILB Co., Ltd. (72) Inventor Hidehiro Aoki Book, Bunkyo-ku, Tokyo 1-28-23 Yuchimachi Chichibu Building In LB Co., Ltd. (72) Inventor Takao Asaga 1340 Orinoguchi, Fukaya City, Saitama Prefecture Chichibu Concrete Industry Co., Ltd. (72) Tomoyuki Masuda Fukaya City, Saitama Prefecture 1340 Orinoguchi Inside Chichibu Concrete Industry Co., Ltd.

Claims (2)

[Claims] 1. A joint material for use in a pavement material having joints, characterized in that the main materials are sand and cement, and the amount of cement is 5 to 20%. 2. A jointing material construction method used for a pavement material having joints, comprising the following steps. (B) A step of spraying and filling a joint material, which is cement and fibers added to sand as a main material. (B) A step of sprinkling water on the joint material after the joint material is uniformly clogged. (C) A step of curing the joint material. (D) A step of washing with a brush while sprinkling water.