工程圈里“沥青砼”和“沥青混凝土”是一回事，“砼”字一出口，基本是常年泡工地的人。但越熟越容易忽略：名字背后那套技术参数，才是路面跑不坏的底子。

In the engineering circle, "asphalt concrete" and "asphalt concrete" are the same thing. When the word "concrete" is spoken, it is basically people who have been working on construction sites all year round. But the more familiar it is, the easier it is to overlook: the set of technical parameters behind the name is the foundation of the road's durability.

一、不是“黑颗粒+油”拌匀就行

1、 It's not just about mixing black particles and oil together

沥青砼=矿料（碎石+石屑+矿粉）按设计级配组配+沥青胶结料+严格油石比，经拌合、摊铺、压实成型的复合材料。密级配（AC）靠悬浮密实防水抗滑，骨架密实（SMA）靠粗骨料嵌挤抗车辙——济南主干道、路口重载区，别拿小区步道那套AC-13硬套。

Asphalt concrete is a composite material formed by mixing, paving, and compacting mineral aggregate (crushed stone+stone chips+mineral powder) according to the design gradation, asphalt binder, and strict oil stone ratio. Classified distribution (AC) relies on suspended dense waterproof and anti-skid properties, while skeleton dense (SMA) relies on coarse aggregate interlocking to resist rutting - don't use the AC-13 hard set for residential walkways in Jinan's main roads and heavy-duty areas.

二、温度链断一处，前面全废

2、 The temperature chain is broken at one point, and the front is completely useless

出厂普通沥青混合料140–165℃、SBS改性170–185℃；运抵摊铺点低于130℃退料，不靠复拌救；摊铺≥135℃，初压紧跟钢轮、终压普通沥青不低于70℃。永诚广建这类有5000型拌合站+同厂水稳配套的，优势在“出料到摊铺”温控不断档，不是只卖一车料。

Factory produced ordinary asphalt mixture at 140-165 ℃, SBS modified at 170-185 ℃; Return materials when the temperature drops below 130 ℃ upon arrival at the paving point, without relying on re mixing for rescue; Spread at a temperature of ≥ 135 ℃, with initial pressure closely following the steel wheel and final pressure of ordinary asphalt not lower than 70 ℃. Yongcheng Guangjian, which has a 5000 type mixing station and water stability matching facilities in the same factory, has the advantage of constant temperature control during the "discharge to paving" process, rather than just selling one truck of materials.

三、石料比沥青更挑

3、 Stone is more selective than asphalt

济南周边项目常用玄武岩、辉绿岩等碱性硬质石料，与沥青粘附性好、抗剥落；石灰岩粉做填料可以，但粗集料用软质石＝半年出坑槽。进场先验压碎值、针片状、含泥量，别等钻芯起皮再查。

Alkali hard stone materials such as basalt and diabase are commonly used in projects around Jinan, which have good adhesion and anti stripping properties with asphalt; Limestone powder can be used as filling material, but soft stones are used for coarse aggregates, which will leave the pit after half a year. Before entering the site, check the crushing value, needle like texture, and mud content. Do not wait for the core to peel off before checking.

四、验收别只盯“平不平”

4、 Don't just focus on "flatness" during acceptance

取芯看厚度+压实度（≥98%标准密度）、马歇尔稳定度、空隙率3%–6%；渗水系数、构造深度、摩擦系数才是抗滑防水的硬指标。只拿肉眼验收，雨季一来就现形。

Take the core and check the thickness+compaction degree (≥ 98% standard density), Marshall stability, and porosity of 3% -6%; The permeability coefficient, structural depth, and friction coefficient are the hard indicators for anti slip waterproofing. Only visually inspect, it will appear as soon as the rainy season arrives.

沥青砼的质量，写在拌合楼计量精度里，也写在压路机碾遍数里。选本地有拌合站+实验室+能出检测报告的厂，比先翻吨价表少踩一半坑。

The quality of asphalt concrete is written in the measurement accuracy of the mixing plant and also in the number of passes of the roller. Choosing a factory with a local mixing station, laboratory, and the ability to produce testing reports can save half of the pitfalls compared to flipping through the ton price table first.