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沥青混合料对于冷再生效果影响因素是什么?

来源:/ 日期:2021-09-09 发布人:
包含土的成分和品种的影响和沥青混合料的组成结构类型的影响。混合料按照颗粒尺度分布状况的不同,能够分为三种物理状况:悬浮一密实结构、骨架一空地结构、密实一骨架结构:
It includes the influence of soil composition and variety and the influence of asphalt mixture composition and structure type. According to different particle size distribution, the mixture can be divided into three physical conditions: suspension dense structure, skeleton open space structure and dense skeleton structure:
水泥的矿物成分和分散度对水泥安稳土的安稳效果有显着影响。
The mineral composition and dispersion of cement have a significant impact on the stability effect of cement stabilized soil.
沥青品种和用量对混合料的性质影响尤为重要,过少的沥青用量会使混合料达不到相关的指定规范,过多的用量会使混合料不仅达不到相关规范,还形成糟蹋,也不经济,路面改进效果也不是很显着。
Asphalt variety and dosage have a particularly important impact on the properties of the mixture. Too little asphalt dosage will make the mixture fail to meet the relevant specified specifications. Too much asphalt dosage will not only make the mixture fail to meet the relevant specifications, but also form waste and uneconomical. The effect of pavement improvement is not very significant.
含水量对掺加水泥的沥青混合料有很大的影响,当含水量不足时,水泥不能在混合猜中完全水化和水解,发挥不了水泥对混合料的安稳作用,影响强度的形成,含水量偏大会有水分流出,水泥的有用成分随水流走,导致抗压强度下降;含水量过大还会形成掺加水泥的沥青混合料的干缩问题。
The water content has a great impact on the asphalt mixture mixed with cement. When the water content is insufficient, the cement cannot be fully hydrated and hydrolyzed in the mixing process, which can not play the role of cement in the stability of the mixture and affect the formation of strength. The water content tends to flow out, and the useful components of cement go with the water flow, resulting in the decrease of compressive strength; Excessive water content will also form the problem of dry shrinkage of asphalt mixture mixed with cement.
掺加水泥的沥青混合料的强度是在一系列杂乱的物理、化学反应过程中逐步形成的,而这些反应过程需要必定的外界条件。必定的温度和必定的湿度对掺加水泥的混合料的强度的形成是有利的。
The strength of asphalt mixture with cement is gradually formed in a series of chaotic physical and chemical reactions, which require certain external conditions. A certain temperature and humidity are beneficial to the formation of the strength of the mixture mixed with cement.
一般的水泥安稳土对集料压碎值有必定的要求。用水泥和乳化沥青再生旧沥青路面材料时,对集料的压碎值相同也有必定的要求。
General cement stabilized soil has certain requirements for aggregate crushing value. When recycling old asphalt pavement materials with cement and emulsified asphalt, there are certain requirements for the same crushing value of aggregate.
沥青混凝土旧路现场冷再生底层(底底层、面层)成本费主要为机械费用和添加剂费用,人工费与其他底层的施工根本相同。现场冷再生工艺与其他半刚性底层资料相比,节省了以下费用:旧路面铣刨及外运费用、底层(底底层、面层)的原资料费用、原资料的运输费用、缩短施工周期的费用等。
The cost of cold recycled bottom layer (bottom layer and surface layer) of old asphalt concrete road is mainly machinery cost and additive cost, and the labor cost is basically the same as that of other bottom layers. Compared with other semi-rigid bottom layer materials, the on-site cold regeneration process saves the following costs: milling and outward transportation costs of old pavement, raw material costs of bottom layer (bottom layer, surface layer), transportation costs of raw materials, costs of shortening construction cycle, etc.

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