混凝土透水砖生产值得关注的几个问题
透水铺装,特别是透水砖发挥着越来越大的作用,而从目前透水砖应用效果来看,还存在着很多问题,亟待解决,比如:
Permeable paving, especially permeable bricks, is playing an increasingly important role. However, from the current application effect of permeable bricks, there are still many problems that need to be solved urgently, such as:
目前山东透水砖在使用中,经受长时间风吹雨打、车辆碾压,容易出现质量问题;砖体内部缝隙多,所以抗压、抗弯强度低、耐磨强度低;比较容易损坏,损坏后需要相关部门重新进行修理维护,可能会导致相关部门工作压力大;现在还没有相对成熟的技术来清除透水砖缝隙中堆积的灰尘、杂质和其他沉积物。特别在北方地区冬季室外温度较低,雨雪渗入透水的孔隙后会产生反复冻融循环,导致冻胀破坏,加上透水砖密度及抗压强度比普通硬化路面地砖低,其冻胀破坏会更严重。
At present, permeable bricks in Shandong are prone to quality problems due to prolonged exposure to wind, rain, and rolling by vehicles; There are many internal gaps in the brick body, resulting in low compressive and flexural strength, as well as low wear resistance; It is relatively easy to be damaged and needs to be repaired and maintained by relevant departments after damage, which may lead to high work pressure on relevant departments; There is currently no relatively mature technology to remove dust, impurities, and other deposits accumulated in the cracks of permeable bricks. Especially in the northern regions, the outdoor temperature is relatively low in winter, and repeated freeze-thaw cycles occur when rain and snow penetrate permeable pores, leading to frost heave damage. In addition, the density and compressive strength of permeable bricks are lower than those of ordinary hardened road tiles, and their frost heave damage will be more severe.
透水砖不用于结构部位,不涉及安全问题,普遍没有引起足够的重视,考察中发现很多值得关注的问题,这些问题具有普遍性。
Permeable bricks are not used in structural parts and do not involve safety issues. They have generally not received sufficient attention, and many noteworthy issues have been found during the inspection, which are universal.
对于原材料的质量控制。透水砖对原材料要求比较苛刻,特别对于骨料的粒径、粒型、含泥量、含粉量、母材强度等,进场的原材料要实时把控质量,这就对检测人员的技术水平和试验室相关仪器设备的配置提出了要求。
For quality control of raw materials. Permeable bricks have strict requirements for raw materials, especially for the particle size, shape, mud content, powder content, and base material strength of aggregates. The quality of raw materials entering the site must be controlled in real time, which requires the technical level of testing personnel and the configuration of relevant instruments and equipment in the laboratory.
考察中发现,试验室人员和仪器设备配置普遍不足,有的就没有试验室,也没有相关技术人员,还停留在小作坊阶段,质量控制何从谈起?有的试验室连基本的石料筛分都不能做,买来什么用什么,恒温恒湿养护箱也没有,更别提标养室。混凝土的强度如何评价?
During the inspection, it was found that the personnel and equipment configuration in the laboratory were generally insufficient. Some did not have a laboratory, nor did they have relevant technical personnel, and were still in the stage of small workshops. How could quality control start? Some laboratories cannot even perform basic stone screening, use whatever you buy, and do not have a constant temperature and humidity curing box, let alone a standard curing room. How to evaluate the strength of concrete?
原材料的储存要在封闭料仓里,以保证含水量的稳定以及不受环境中风沙尘土的影响。随着环保意识的增强,现在多数企业都封闭了料仓,但仍有个别企业露天堆放。
The storage of raw materials should be in closed silos to ensure stable moisture content and protection from the impact of environmental wind, sand, and dust. With the increasing awareness of environmental protection, most enterprises have closed their silos, but there are still some enterprises that stack them outdoors.
配料搅拌成干硬性混凝土后开始生产,制砖机振动压制成型砖后,紧接着是养护!这一环节多是利用自身的水化热蓄热养护,低温季节温度不够时会通热蒸汽进行加温加湿。养护窑更有利于砖的早期养护,温度湿度控制更精准,对空间的利用也更合理!
After mixing the ingredients into dry and hard concrete, production begins, and the brick machine vibrates and presses the formed bricks, followed by curing! This process mostly utilizes its own hydration heat storage for maintenance. When the temperature is not enough in the low temperature season, hot steam will be used for heating and humidification. The curing kiln is more conducive to the early maintenance of bricks, with more precise temperature and humidity control, and more reasonable utilization of space!
混凝土透水砖多用于广场或人行道路,不涉及结构安全,各生产单位普遍重视程度不够,此次考察中,有几点感受深刻:
Concrete permeable bricks are mostly used in squares or pedestrian roads, and do not involve structural safety. Generally, production units do not attach enough importance to them. During this inspection, there are several profound feelings:
(1)对试验室设备和人员的配置水平需要提高,因为这是保障材料从进场到产品出厂的技术保障。
(1) The level of equipment and personnel allocation in the laboratory needs to be improved, as it is a technical guarantee to ensure that materials are delivered from the site to the factory.
(2)原材料的储存很关键,随着国家对环保的重视,现在多数企业封闭了料仓,有的建设了筒仓,封闭料仓可以保证含水量的稳定,减少环境中风沙尘土的影响,但也有部分企业受场地小、储量大的限制,存在部分、甚至全部露天堆放的情况。
(2) The storage of raw materials is crucial. With the country's emphasis on environmental protection, most enterprises have closed their silos, some have built silos, which can ensure stable water content and reduce the impact of wind, sand and dust on the environment. However, some enterprises are limited by small sites and large reserves, and some or even all of them are stored outdoors.
(3)对出养护窑(养护棚)后的养护重视程度普遍不够,透水砖属于水泥制品,出窑后养护不足、缺水导致水泥水化不充分,表层容易起粉、抗磨性下降、容易被冻坏,加强后期养护措施至关重要。更多相关的内容就来我们网站//www.quanyouyou.com咨询!
(3) The level of attention paid to the maintenance after leaving the curing kiln (curing shed) is generally insufficient. Permeable bricks belong to cement products, and insufficient maintenance and water shortage after leaving the kiln lead to insufficient hydration of the cement. The surface layer is prone to powdering, decreased wear resistance, and is prone to freezing. Strengthening later maintenance measures is crucial. For more relevant content, come to our website //www.quanyouyou.com consulting service
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